Thursday, June 11, 2009

We're not in Kansas anymore

Hello all! Sorry it's been awhile, but it's been a busy week for VORTEX2. While we haven't seen anymore tornadoes, we have been on a lot of strong storms that have been tornado warned, and some that even produced some questionable (and not so questionable) tornadoes that we didn't actually see.
After getting our windshield replaced in Cheyenne, we headed East and met up with the rest of the armada in Kearney, Nebraska. On the way to Nebraska we saw some impressive storms but by the time we got on them they had significantly weakened.

On sunday, conditions were favorable for supercells along the Eastern Nebraska/Kansas border. We headed out from Kearny to Lincoln, then on to Auburn, NE. After some time sitting around Auburn a few of us noticed some storms developing a little farther south in Kansas. I assumed we would then head south to chase them, but we recieved some counterintuitve instructions to head into Missouri and wait for the new supercells to cross the Missouri River before intercepting them. The reasoning for this was that the field coordinator thought the storms were moving much faster than they actually were, so he thought we might have to get much further ahead of them than we actually did. In reality, we had over 2 hours to chase the storms in the flat country of Kansas, rather than the more difficult hilly and wooded terrain in Missouri. This was the first of a series of perplexing decisions from the higher-ups this week.

Anyway, we chased in Missouri and eventually let the storms come to us. The storm we chased was impressive and tornado warned for several hours. Though there were some tornado reports, most of the V2 crew are skeptical considering not one of us actually saw one form. That night we headed to Topeka. On the way, we discovered a tornado had touched down after dark right near the Wendy's we had eaten dinner at less than an hour before!

The next day was just a travel day as the weather didn't look all that great. The fleet moved to Salina, KS to position for what looked like a great day near Witchita on Tuesday. On Tuesday morning we headed south and hung out near Witchita to wait for storms to develop in our first Moderate Risk day for tornadoes. Unfortunately, as the day went on conditions looked less and less favorable for tornadoes so we kept heading west hoping for a storm to pop up. Our journey west took us through Greensburg, KS which many of you may remember took a direct hit from an EF5 that wiped out the entire town. It was sobering to realize the damage that a tornado can do to a town, even a year later the devastation was still evident. Eventually we ended up chasing a supercell that developed near Dodge City. At times it looked great. Kiel and I drove right under the rotating wall cloud at one point ( a stupid idea, but it worked out fine considering we're both still alive).

rotating wall cloud right before we drove under it.


After spending the night in Witchita, we again chased storms in southwestern Kansas on wednesday. The day was mainly cloudly and rainy, but eventually we hit a patch of sunny skies that we needed to heat up the ground and give us the explosive energy for thunderstorms. Some weak supercells developed in a line near Hugoton, KS that we chased on. Some of the features of note included a shelf cloud and some impressive mammatus clouds. Dark came, so we quit on those storms, but a brief tornado was reported and confirmed by photos after we ended on the storm. The 2 hour ride back to Dodge City was full of rain and wind, but eventually we made it back to our western themed hotel to have dinner around midnight in the hotel restaurant which they were nice enough to keep open for us.

shelf cloud

mammatus clouds

Today was a mess. All in all, it will probably go down as one of the most indecisive days of the experiment by the PI's which led to some low morale among everyone. This morning, things looked really great near Amarillo in the TX panhandle, so we all woke up early and headed south. After driving three hours, we got the message to hold up as new targets were being evaluated. We waited between two targets (both of which were about 3 more hours away) further south in TX or back north in Colorado for a valuable hour. Eventually it was decided among the PIs (reportedly by a coin flip) to back track and go back North to south eastern colorado. Although the decision was widely agreed to be a bad one at the time, we lucked out and got onto some very impressive storms near La Junta, CO. At times it looked like a pair of supercells right next to each other would both produce tornadoes simulataneously, all within our view. However, this dream scenario never really played out. The storms were very impressive to look at and had a lot of medium sized hail that piled up about an inch on most of the roads. One of the storms reportedly had a breif tornado, but we missed it again!

Today's storm as we approached. There's the barrel updraft, wall cloud, and rainshaft.

rain and hail pouring out of the storm as it became sort of a heavy-precip storm.

VORTEX2 only has 2 more days left, and it looks like we probably won't see another tornado. However, it's been an exciting ride and in the past 4 weeks I've seen more of the country than most people see in a lifetime. While the first year of this experiment will be considered by most to be a failure in that we only successfully deployed on one tornado, I think we collected some useful and valuable data on a wide range of storm types. We definitely will have a lot to work with on storms that DON'T produce tornadoes. This is important because it will help us understand why some storms produce them, and others that look like they might ultimately don't. In anycase, we've generally been on the most impressive storm in the plains each day, so it isn't like we've been missing tornadoes. The weather just didn't cooperate with us in one of the most quiet years anybody out here can remember.

Friday, June 5, 2009

I never thought my first tornado would be in Wyoming...

Finally! V2 intercepted a tornado!!! more on that later, a lot has happened since my last post.

Yesterday, the fleet moved from Colby, KS into Colorado to intercept some supercells that might form on the Rockies and move east over the front range. Initation began along the Laramie range in Wyoming, so we drove north to meet it. The first target was a small supercell to the east of Cheyenne, WY. The storm had some nice lowerings and a few of our probes reported a landspout tornado, though this was unverified and we're all a little skeptical on that one. While doing our transects we did run into a dirt road full of cows (none of them flying, sorry dad).


cows in the middle of the road


That storm soon died out, but another one formed to our Northwest, above Cheyenne. We quickly moved west on I-80 to intercept it. As we approaced Cheyene, the radar indicated rotation at low levels in the storm and a lowering in the cloud base was visible from miles away. I was honestly scared for Cheyene at the time, in that any tornado would blow through the downtown area. We followed P1 into the "bearcage" - the area inside the hookecho where rotation exists in the storm a!nd a tornado would form. However we were in downtown Cheyenne, so we realized any intercept would be really messy. We pulled out of Cheyenne back east on I-80 and hit massive amounts of hail. At times it looked like winter with over an inch of pea sized hail all over the roadways.


hail on I-80

That night we headed back south to colorado to position for new storms today. Overall we travelled nearly 500 miles in over 4 states yesterday. On the ride back to Sterling ,CO we saw an excellent display of lightning and clouds in the storm that was now dying.
This morning we left Sterling to go north again into wyoming. Today was a 10% tornado risk day with a tornado watch over wyoming and the nebraska panhandle. After some time in nebraska waiting for storms to go up, we finally got a target to our northwest in Wyoming. The storm was visually stunning as we approaced it with a beautiful wall cloud that looked like it would drop a tornado any second. We got up right under the rapidly rotating wall cloud and watched curtins of rain descend and rotate less than a mile away from us. Our instructions were to drive through a canyon below the wall cloud, but we made an executive descison not to follow them because we had no visibility on the storm. It was a good decision because our new route gave us a perfect view of a forming tornado that moved right down the road we were supposed to be on!


if you look hard, you can see the tornado (my camera has bad resolution, it looked better than this)

First, a funnel cloud dropped out of the base reaching half way to the ground with some visible debris on the ground, A TORNADO! this first weak tornado died quickly. It wasn't long before our probe got lost in hail and had no view of the rotating wall cloud. (this sounds unsafe, but we were on teh back side of the storm so not in harms way). When we turned around after our transect, we encountered some golf ball sized hail. While i was driving i noticed a dark spot in the rain/hail curtain in front of us. After driving a little further i soon realized i was looking at a fully formed cone-shaped tornado about a mile ahead of us. The tornado at this point was possibly a quarter mile wide. At this point we had good viewing of the tornado for several minutes but encountered steadily bigger hail getting thrown out of the updraft. We were forced to slow down and eventually stop when our windshield took on heavy cracks all over as we got slammed by baseball sized hail.

notice the hail bouncing in the grass, and our windshield

we actually took bigger hail than this, but i didnt feel safe getting out of the car in that stuff.


We came upon probe 1, which was stopped at the side of the road with a much uglier windsheild than ours and lots of their instruments pulverized. We stayed with them and got out of our car to observe the tornado "roping out" - or thinning and bending as it dissipated. We then followed probe 1 behind the storm to watch it for further development, however, we couldnt go in because both our windshields clearly couldnt take any more hail. At one stopping point, we realized we were parked infront of an underground nuclear warhead silo (Wyoming and nebraska are where the US government keeps their nukes). We were soon visited by some military security in a pick up truck asking us to leave the premises immeadiately!


After taking a few more pictures of the storm, we took probes 1 and 3 back to cheyene where we are now to await replacement windshields tomorrow. The rest of the armada followed the storm east into nebraska where it produced another tornado after dark (so the weather channel tells me from my hotel room in Cheyene).

This was probe 1 after the intercept, we took similar damage in
probe 3.

All in all it was an amazing day. The tornado was on the ground near La Grange, WY for over 24 minutes. It moved slowly, allowing V2 to sample it the whole time. It was under mobile radar coverage at all times. The tornado pods took a direct hit from the tornado, as well as the TIV. Sticknets were well positioned and the mesonets had it surrounded. Personally, our misison was a great success in probe 3, as we got all the data we could have asked for in the spot we were supposed to be in. This was the most intensively observed tornadic supercell in history--and somehow I managed to be part of it!

Personally, i couldnt stop smiling all day as this storm was amazing. Being in 3-4 inch hail itself is exciting not to mention when you can see a tornado less than a mile away!!! On the drive back, Kiel commented: "can you believe we get PAID to do this?!" It was a great day, and tomorrow we will try to join up with the rest of the armada as soon as we get a new windshield.

The experiment ends next saturday, and every day between here and there looks like it has the possibility of tornadoes. The first 4 weeks, though slow have prepared us for what looks to be an awesome time!

Wednesday, June 3, 2009

The calm before the storm(s)

Greetings from Colby, Kansas and another down day for V2!

Since I last posted, I've been to Nebraska, Iowa, back to Nebraska, and finally Kansas. On Sunday, we drove East from Grand Island, NE to an area along the Missouri River in Eastern Nebraska and western Iowa where the PIs (Principal Investigators, aka big wigs) thought conditions were favorable for the development of supercells. We spent much of the day at a truck stop in Lincoln, NE, and then moved across the river to Council Bluffs, Iowa. Kiel, Kevin and I along with the rest of the V2 armada sat in a parking lot for a few hours waiting for convection to initiate. Eventually we saw this to our Southwest blossoming over southeastern Nebraska:

convective initiation

the storm started to get going...

a small, but cool-looking precip core


We soon moved south to get infront of the storm. Spirits were high considering we had a good amount of low-level shear for supercells (change in the wind speed and direction with height that causes storms to rotate). After sitting pat while we waited for the storm to develop and cross into Iowa where we were waiting to intercept it, the mobile mesonets began doing some transects in the hilly terrrain of Southwest Iowa. The storm had a huge anvil, but unfortunately that was about it. Though there was a ton of lightning it soon died out and showed no signs of rotation.... somewhat odd considering the environment.


when you look through the storm and see the sun shining, you know something went wrong...


Though we were somewhat dissapointed in the storm's development, we spent the night in luxury at the Hilton Omaha. It was a nice hotel, but unfortunately we had little time to spend there the next day. The fleet moved on south back through Lincoln to intercept some more storms on Monday along the Nebraska/Kansas border. After some long hours waiting again in a truck stop, we chased down and intercepted a storm just north of the border near Hebron, NE. The storm was not a supercell, but did interact with a few nearby storms to produce a line of heavy precipitation with some small hail and some pretty intense wind gusts. We clocked one gust in probe 3 at over 60 mph. Some other members of the team saw a few funnel clouds and some reported "gustnadoes' which are tornado-like vortices that develop along the gusty winds that flow out of a thunderstorm. They are weaker than tornadoes, and don't feature a funnel cloud. The team also had our first run-in with messy dirt roads. Probe 4 got stuck in the mud during the storm on a dirt road south of us, however they were able to manuver their way out eventually. That night we quit early in order to drive to our location for the night in Salina, KS.

Yesterday was a travel day and the project moved west to Colby, Kansas which is in the Northwest corner of the state. This decision was a little frustrating for a lot of us, because of the reports of supercells in Texas and two tornado reports in southern Kansas. While the team possibly could have made it to the Kansas storms in time, it would have been a difficult drive given our position the previous day. The PIs also thought that it would be good to rest up the teams and do vehicle maintenace because it seems like we might be operational for several days in a row later this week and weekend given the favorable conditions in the forecast (more about that later).

We took the free time yesterday to do some bowling and visit a local bar called "Twisters". It was the only bar in town, but conveniently had a stormchasing theme so the locals got a kick out of it. It's been odd getting used to the quasi-celebrity status of being a storm chaser in a small town. The other night while eating dinner, a mom brought her kids over because they were dying for our autographs. The vehicles are especially popular with the locals, as we'll usually find people taking pictures of the probes in parking lots or on the road.

Today was another down day. I slept in and then took some time to catch up on laundry after a big breakfast. Later on we visited Sonic for some free root beer floats and got dinner at the only real restaraunt in town, connected to the Comfort Inn. I've also done a little bit of lounging around and caught the end of Ghostbusters on TV.

The rest of the week looks like it should be awesome weatherwise. There will finally be upperlevel flow as the jet stream moves south. What this means is that wind shear will increase, forcing storms to rotate. Rotation is one of the main characteristics of a supercell, and is a needed ingredient for tornadoes. The tough part will be getting enough moisture to flow up from the Gulf of Mexico to make the atmosphere unstable enough for explosive convection with low cloud bases. So far in the experiment, we've been missing both the shear for rotation and the moisture to have low cloud bases which are also needed for tornadoes. The pattern for the rest of the experiment looks alot better for both ingredients, so there is a general air of optimisim around the project.

Personally, I can't wait to get on some real storms. I've been hearing from a lot of the more experienced chasers about the circus that will result from all the amateur chasers that are out, especially after such a quiet period. Hopefuly the experience that we've gotten so far on the project will help things go smoother in the face of more dangerous storms and more crowded roads. Speaking of missions, Kevin was sadly moved from Probe 3 to P7 to help out over there leaving just Kiel and I in probe 3. We could possibly be operational for pretty much everday over the rest of the project, so I'll be really busy. I hope to update the blog as frequently as possible, but I can't make any promises. Though, If i do see a tornado I'll be sure to make a note of it!

Only about 10 days are left on the project which is really hard to believe. It's been an amazing journey so far, and it looks like it will only get better. I've learned more about severe storms and forecasting them in the past 2 and a half weeks than in 4 years at PSU. However, despite all the cool people I've met and friends I've made it will be nice to get back to Pennsylvania and catch up with old friends and sleep in my own bed when this is all over.

Saturday, May 30, 2009

back to nebraska...

The past few days have been quiet weatherwise. Unfortunately I don't have any new pictures although the mesonet crew did get some press. After taking some time off Wednesday in Norman to do some laundry and get the oil changed in our probes, the V2 armada headed North to Topeka, KS.

In Topeka we got some great BBQ at a place called Boss Hawgs. Given the lack of weather and things to do in Topeka, we took two probes out to the local movie theater to see Angels and Demons. It was a good movie, but not nearly as good as the book. We later returned to the parking lot to discover our probes had been tagged by some locals with nothing better to do, then spent some time at the hotel bar.

The next day (yesterday) broke many records, but not good ones. Conditions were marginal (and i mean marginal) for supercells to develop over central Nebraska, so we hit the road fast from Topeka and chased after them. After a few hours of driving we finally caught up with a developing storm 30 miles south of the South Dakota border, but by the time we got there it was already weakening. When we completed a few transects of the storm with our probe, we decided to cut our losses and head home, possibly intercepting another storm on the way. However, local law enforcement had other plans. The probe i was driving, as well as probe 1 behind me were pulled over by the local sheriff for speeding. Though we got off with a warning, we soon learned that ben's probe (p5) and several other vehicles had also been pulled over by the same cop.

After the slight delay we drove south to Grand Island, where we had been earlier that day to spend the night in the local holiday inn. Overall, we were told the trip was over 600 miles- a V2 daily mileage record, with a record number of police encounters. All for a rainshower....

Today is a down day and tonight we will have a review of our missions and data collected so far as well as have a mid-experiment meeting to discuss how things have been going so far with each group. We'll stay here tonight, then either head towards minnesota and eastern South Dakota, or down to the Texas panhandle for operations tomorrow or monday. Overall , the weather pattern is looking a lot better for severe weather so we should see something good in the upcoming week.
In the meantime we've been having lots of fun visiting local restraunts and bars. Our trip coordinator has managed to get us into great hotels and usually lands us free drinks at the hotel bars we go to. We've also been getting to know our new mesonet navigators. Replacing harald in our probe is Kiel Ortega - an NSSL employee from OU.

We've also gotten some attention from the weather channel for our probe mascots ,that resulted in a piece aired last night featuring me, as well as all the other probe drivers which you can see at:

http://www.weather.com/multimedia/videoplayer.html?from=email&bcpid=823425597&bclid=877032950&bctid=24756145001

That's all for now, sorry for the lack of anything too excting, but things are like that lately.

Wednesday, May 27, 2009

"You guys might want to put your glasses on"

Greetings from Norman, OK!

The past two days have been "GO" days for vortex 2, and we have largely continued our streak of killing storms wherever we go. However, yesterday provided the most interesting storm intercept so far.
On Monday, Memorial Day, we chased several storms in SW Oklahoma and North Texas. Unfortunately, each of the 3 storms we followed died when we got there or shortly before. The end result was a 450 mile drive that returned us near our starting position in Childress Texas. While most people we pass fear for their safety in the face of oncoming storms, we've grown used to telling them that they are in no harm since storms tend to die as we approach. While frustrating, it is still very exciting and we see some spectacular sunsets as a result.

Sunset behind an anvil

The lack of action changed yesterday. We drove Eastward from Childress towards an area of high CAPE (convective available potential energy, which is an index of the amount of buoyant energy in the air) and very high dewpoints. With surface temperatures near 90 and dewpoints it was very very humid. We spent most of the afternoon and evening in Gainesville, TX (just north of Dallas) waiting for the first storm to go up. I was anticipating a good chance of tornadoes as my advisor said "we'd have to be stupid not to see a tornado today". (note the ironic foreshadowing) Eventually a storm did go up just West of Ft. Worth. Because dallas/ft. worth has the worst traffic next to LA in the US and it was rushour, we had no hope of chasing a storm moving over that area. We stayed north hoping that another storm would initiate closer to our position in more favorable chase terrain. After an hour or two we realized that the dallas storm was our only option so we moved towards it, hoping to catch it as it moved out of the urban area.

Near Witchita Falls we saw a few wild camels along the road.

However, on our way, the storm split and sent an left moving storm off to the north of the main right mover. The left-mover had an anticyclonic (clockwise) rotation and a hook echo. Most supercell storms have a cyclonic, or counter-clockwise rotation. The left mover soon became the dominant storm which is very uncommon as the left mover usually dies in preference to the right-mover. We chased the left-mover near Decatur, TX (to the northwest of Ft. Worth). Inside the storm we encountered golfball and larger sized hail. While we measured 1.75" hail, larger hail soon hit us that we suspect was over 2 inches in diameter. This prompted Harald to put on his goggles and encouraged us to put on our sunglasses just incase of a windshield crack.


Rising scud into the left-moving anticyclonically rotating updraft.


Some hailstones we collected.

The storm became very ominous looking with rising scud, however outflow overran the circulation and prevented it from ever dropping a tornado. It soon turned dark while we were under the storm so operations were called off. However, on our way out we somewhat accidentally ended up right underneath the heart of the circulation, where a tornado would drop in the now-cyclonic circulation of over 60 m/s (150 mph) wind shear aloft. Fortunately for us, the DOWs reported the circulation was well above us and had no hope of reaching it to the surface. Otherwise, it would have been very unsafe to be where we were, especially at night. Overall, we got very good data with 6 radars and around 10 mesonet probes, making this the most extensively studied left mover ever.


WSR-88D velocity mode, showing a cyclonic couplet with TVS (tornado vortex signature, pink wedge) just above our position (circle).


After we left the storm we moved north to Norman, OK for the night and got a spectacular lightning show behind us as we drove. Today we hung out in Norman for a down day with no VORTEX2 related operations going on because of calm weather. I took today as a chance to get some laundry done at the local laundromat, and Kevin and I got an oil change for our probe since it's gone over 5000 miles in the past few days. The off day is a great chance to relax since we've been putting in 14 hour days and over 500 mile drives per day in lately. Tonight we hope to head into OKC for some dinner and then visit the local bars with some of the OU grad students on V2. Today also marks the last day on the trip for our navigator Harald Richter, who will be replaced by an OU grad student in our probe. He was a great guy to have around and a great resource for questions that kevin and I fired at him. The weather channel did a special on him yesterday that featured him and our probe, so look for him, probe 3, and kevin and I on TV tonight or tomorrow.

Tomorrow we're heading north into eastern Kansas, and will likely use the next two days for travel and a mid-experiment discussion and review. The next chase day looks to be Saturday in the Missouri and Mississippi river valleys as we finally get into a much better pattern for severe weather and tornadoes.

It's hard to believe that there are only 2 weeks left in the experiment, and we haven't even seen a tornado yet. This looks to change in the upcoming week though as conditions improve. We're all losing track of the days of the week and are in a state of constant exhaustion from the driving. However, if you ask anyone out here (including me) they'll tell you we're having the time of our lives!

Sunday, May 24, 2009

I'll have the Texas...


The past few days have proven uneventful for the V2 team. On Friday, we chased a few mountain driven convective cells from one side of the black hills to the other to no avail. After waiting in the parking lot for several hours we moved west, only to move east, then back to the parking lot. During downtimes there is a lot of frisbee, football, and baseball played while we wait around with instructions or for a target to develop. The highight of the day was a staged photo shoot of the mobile mesonets for the IMAX film crew. When we returned, as a thanks Sean Casey (the guy who drives the TIV on stormchasers) shared a case of beer with us. Later that night we enjoyed a local restaurant in Hot Springs where I had an excellent prime rib, and a nice beer called Moose Drool.


Part of the armada waiting in the hotel parking lot in Hot Springs, SD


The Imax film crew, these guys are borderline insane.


The next day(yesterday) we headed south again back through Alliance and Ogallala to chase a few storms that had a marginal chance of becoming supercellular. The FC (Field Coordinator) vehicle was short a navigator so i had a chance to hope on board that vehicle (basically a converted ambulance) for the day. The FC is essentially the mobile headquarters for V2 and takes care of communications and organizing the deployment of different teams on a target storm. While the storm we chased never turned out to be a supercell, in the FC we had some excellent views and i had an opportunity to see how decisions are made out in the field and get a new perspective of the project.



The FC vehicle






The view of a storm from the FC vehicle on Saturday.



After spending the night in North Platte, NE it was soon apparent that we were going to have little luck remaing up north. With the jet stream in Canada and little moisture and no energy over the northern and central plains, the decision was made to head south. Far South. Today we drove from North Platte, to Amarillo, TX; a 500 mile drive that took approximately 9 hours. I navigated for the FC again today, which is much less exciting on a travel day than during a deployment. On the way to Amarillo we accidentally came upon a fairly strong storm with lots of scud and a lowered shelf like cloud. It was an outflow dominated storm with no rotation so there was no hope of a tornado, but it was still very cool looking.





Ominous looking outflow, really not much of anything but you could imagine a tornado dropping out of it.



Once in Amarillo, we had dinner at The Big Texan, a famous steakhouse whose claim to fame is the "free 72 ouncer" -- a 72 oz. steak that is free if eaten in under an hour. Trying to avoid a nasty car ride tomorrow i opted out of the challenge. Instead I had an excellent steak and tried some fried okra for the first time. I came to the conclusion that all fried food really tastes the same so it was nothing special.

Outside The Big Texan



Tomorrow looks to be a "go" day with the chance for both CAPE over 1000 j/kg and shear maybe getting close to 30 kts. We can only hope for a supercell and maybe, just maybe a tornado either tomorrow or tuesday!

Thursday, May 21, 2009

Make like the pioneers and spread out.

Following the lead of the Pioneers, V2 has been travelling along the route of the old Oregon Trail. Yesterday we moved northwest from Ogallala to Alliance, Nebraska. In the afternoon the fleet massed in a small park in Hemmingford, NE awaiting the development of storms. Due to weak shear, we had little expectation of any supercells, much less tornadoes. After some initial development to the SW, we decided to get ahead of a developing cell by travelling an hour to the East. Our movement put us in the Sand hills of Nebraska, which have a poor road network and little visibility for our mobile radars. Since the storm was less than thrilling we decided to call of operations for the day as we headed back to our hotel in Alliance.

However, mother nature was not finished with us yet. On the way back to the hotel, the field cooridnator noticed a developing low precipitation supercell a few miles north of Alliance, so we decided to pursue given it was the most promising storm ofo the day. We managed to deploy our mesonets throughout the storm, noticing some relatively strong inflow. Some scud clouds developed travelling into the updraft base, eventually forming a transitory non-rotating wall cloud (a lowered portion of the cloud base, usually the location of a tornado). Rotation in the storm was fairly weak, so we had no anticipation of a tornado. However, a wall cloud is a good sign and would be the immediate precursor to a tornado if one had formed. The storm developed quite rapidly and did a few transects of what somewhat resembled a rear flank downdraft. In one of our transects we intersected some pea-sized hail. Eventually the storm progressed to the East but owing to no east-west road options we could not pursue and ended operations. The storm soon dissipated following our data collection. Travelling back to Alliance we were treated to a few rainbows and interesting cloud formations.






Scud getting drawn into the inflow eventually formed a transient non-rotating wall cloud.





Given the low expectations of the morning, the evening supercell was quite a surprise to most of us and left us in good spirits heading into today. However, this morning showed no signs of anything severe, so we decided on no operations for the day and just travel north to position for possible data collection tomorrow. With a destination in Hot Springs, South Dakota only 2 hours to the North of Alliance, we had time to enjoy some of local culture.

At times Storm chasing is very exciting, like last night, but at other down times it can border on painfully boring. It's a hurry up and wait game with lots of time to meet fellow chasers. In order to relieve some of today's boredom the mesonets decided that each of our probes needed more character. As a result, we made a stop to the Alliance Dollar General to each purchase a mascot for our probe. For probe 3, kevin and i selected a Mr. Potato head in a spider man costume that Ben affetionately dubbed "Spider Spud." Other mascots include Probe 4 (the party probe)'s dancing and singing stuffed lobster, Probe 7's armadillo, and Probe 5's toad. Spider Spud proudly sits on our dashboard as we drive giving us a thumbs up on overhead clearance. Harald, Kevin, and myself have taken to photographing Spider Spud at different locations along our journey (much like the Croslands and ET).

Later in the day on our way to Hot Springs, we took a stop at CarHenge as well as an interesting "rest area". We arrived in Hot Springs in the early afternoon. Hot Springs is a nice little tourist town in the Black Hills of SW South Dakota making for some nice hilly and forrested scenery compared to the flat plains we are used to. Because we were conducting no operations, many of the team decided to take a short trip North to see Mt. Rushmore. On the way we passed through several state and national parks and saw a load of native wildlife including prarie dogs, antelope, white tail deer, pheasants, and Buffalo. Mt. Rushmore itself was worth the trip and is very visually stunning, even from several miles away.

Spider Spud enjoying the sites at Mt. Rushmore (yeah, we were bored that day)


As we move through numerous tiny towns out here on the plains, I find that we are somewhat celebrities. Invariably, wherever we stop we are likely to interact with some curious locals. Most locals give us one of two reactions. The first being shear panic and the question of "is there something going on we should know about?" The other being "I've loved tornadoes all my life and can I come with you?" Yesterday in Hemmingford the entire nearby elementary school seemed to take a break to come out and look at our vehicles, while we were personally interviewed at brunch this morning by a curious diner cashier. While chasing yesterday afternoon, a cop stopped by the mesonet convoy asking if he needed to set off the tornado siren or if he would be pelted with hail on his motorcycle. Overall, people seem to be supportive of what we do and wish us luck, while others clearly seem to wish we would just get out of town. Though we may not be seeing storms, we're certainly helping out some local economies with bars running out of beer, and waitresses making extraordinary tips.

That's all for now, sorry about the lack of pictures, but the hotel's internet is too busy to upload them right now, so i'll add them as time permits. Tomorrow looks to be pretty quiet with a marginal chance for operations in eastern Wyoming or farther east along the Nebraska/South Dakota border. In the long term, it looks as if there's a chance we may be headed south again. Texas anyone?

The weather pattern isn't cooperating but morale remains high as we've adopted the motto: "He who has no expectations is never dissapointed"

Tuesday, May 19, 2009

Ogallala, Nebraska

Greetings from the Mountain Time Zone!
Yesterday, the fleet moved north from Hays, Kansas to a small town in Western Nebraska called Ogallala. In order to meet up with them, Kevin and I hitched a ride North with an OU undergrad who is a member of the support team for one of the DOWs (doppler on wheels). After driving 20 hours to OKC, the 9 hour drive to Nebraska felt like nothing.

When we pulled into the parking lot of the Best Western we're all staying at, we were greeted with a meteorologist's paradise of radar trucks, mobile mesonets, and sounding vehicles. After meeting up with Paul and Yvette (our advisers) to get up to speed, we prepared for a chance to chase today.

In front of my home for the next 4 weeks: Probe 3 (the snack probe)



The TIV2 (tornado intercept vehicle) in the parking lot. You might recognize it from the show "storm chasers"




Two of the DOWs parked in the hotel parking lot.


At this morning's 10am weather briefing we got our plan of departing for the panhandle of nebraska in order to chase some weak storms in the hopes of maybe catching a microburst. Because our depart time was not until 2, this gave a few of us mesonet drivers time to experience the town we had lunch at an old diner and found a huge lake to walk around for a while:
the diner we had lunch in, and downtown Ogallala


Finally at 2 we headed out to Sidney, NE to deploy on some developing cumulonimbus clouds that gave us a little hope for at least a microburst (which is a strong gust of wind brought on by rapidly sinking air that falls as precipitation cools it). Unfortunately, ridiculously low dewpoints caused the storms to have high cloud bases, which made tornadoes all but impossible. What we did find were a few gusts of wind up to 44 mph , which blew up some dust in places. Overall, while the storms were less than exciting, it gave the team a chance to work out some kinks in our deployment strategies while collecting some potentially useful data.
our first look at the storm as we approached. It had a really high cloud base, so no expectation of anything tornadic.


It also gave Kevin and I our first experience chasing a storm. Each probe (we're in probe 3) has a sophisticated GPS equipped computer system that allows us to monitor the position of every other vehicle while seeing radar and road networks. It also enables us to message other vehicles and recieve instructions from our team leader. Data collection essentially involves driving 20 miles, then turning around and doing it again in order to get a sampling of the meteorological variables across a storm.
some virga (precipitation that doesn't reach the ground) from our target with windmills

Wednesday looks to be slightly more promising, with the chance for a severe storm or two although tornadoes are still unlikely. In all likelyhood we'll be moving North again into some desolate areas of northwestern Nebraska. Regardless, it seems like we'll finally get out of Ogallala which makes no one happy because we have a nice hotel with a hot tub here.

While spirits are somewhat low here because of the low probabilities of tornadoes over the next week, I can't help but be excited for being part of such a large group of people devoted to the weather even if we're only chasing showers.

Sunday, May 17, 2009

If you think Virginia is long, try driving across Missouri...

We're here! (almost)

After Friday's graduation ceremonies and a day of goodbyes on Saturday, Kevin and I finally departed for VORTEX2. We left State College around 4:30 on Saturday afternoon after picking up a rented car from the airport. Throughout western PA we ran into a few squall lines and weak thunderstorms. While these were wimpy compared to what we will likely see in the coming weeks, it may be the closest we get to a thunderstorm for a few days (more on that to come). Below is a picture of the drive through the Alleghenies, showing one of the storms ahead: After driving 8 hours, we arrived in Indianapolis shortly after midnight where we slept a few hours before continuing. The next morning we departed for OKC. With a little re-arrangement of our plans, we soon learned we'd be heading to a hotel in Oklahoma City as opposed to Norman. The drive in total took approximately 20 hours and over 1200 miles across ohio, indiana, illinois, missouri, and oklahoma. Kevin and I arrived in Oklahoma City around 6pm and enjoyed the last out of the local minor league baseball team and some dinner at a local microbrewery. We then exchanged our rental car with some shady dealings and free shuttle exchanges at the airport for a ride to tonight's hotel. Overall, the trip was much faster and less exhausting than either of us expected.

So what happened to the V2 crew while we were driving out here? Friday afternoon (operations day 4) was a "GO" day. The armada deployed on a line of storms in Northwest Oklahoma. Apparently one storm displayed a brief funnel cloud, but chasing was forced to a halt by dark. The target storm then preceded to develop a tornado shortly after dark near Oklahoma City, unfortunately unsampled by V2.

This weekend has been calm in the great plains, and looks to continue that way through much of this week. After Friday's action, the armada moved to a location in central Kansas, in the middle of our operating domain to wait out the clear skies. The reason for the fair (and boring) weather is a prominent ridge that is building over the middle US, and looks to stick around through this week. The map below shows an upper air map forecast for Tuesday (upper right), showing the ridge over the plains. (If you're not too familiar with meteo, the ridge is the hump in the black height lines on the map below, more ideal conditions would have a dip or trough in these lines moving through the 4 corners region).

Tomorrow Kevin and I will be picked up by a member of the team on his way from the University of Oklahoma and should be joining the team before they depart Kansas. Chances are that this week will be pretty boring with little in the way of storms. The best chances for storms over the next few days will be in the far northwest reaches of our chasing region (see below), although even this is hopeful at best. Long term forecasts show promising conditions over the southern plains developing towards the upcoming weekend.

vortex 2 operating domain (within red line)

So far, the trip has been exciting, and interesting. I've seen a lot of the country today, including the gateway arch at St. Louis. Although we have yet to see a tornado, and it seems unlikely that we will have an opportunity until late in the week, the travel and sights alone would make this trip worthwhile.

Unfortunately, in order to keep as many hangers-on and amateurs out of our way as possible for the safety of everyone invloved, I can't be more specific in this blog about our future or current locations than rough areas of states. After we're gone from places I'll be sure to let you know what happened and exactly where with pictures.

I'd like to thank everyone for all their support and interest in my adventures, and before my next post i'll leave you with this photo:

A mobile mesonet (one of the vehicles i'll be driving) collecting data in Oklahoma on Friday with a shelf cloud in the background.

Wednesday, May 13, 2009

Tuckers, the Confederaaacy, stealing home, and free beer...

Although this is a blog about Vortex2, I'm going to digress for a little.

This week is senor week. Seniors staying in State College have no class, finals or any real responsibility besides graduation. In general, it's a time to hang out with friends one last time and visiting bars one last time. While I'll still be here next year, It's still a sad time because many of my friends will not be. I often get tricked into thinking that I won't be back either. It's hardly a lonely time--we have 9 people staying in our apartment since other seniors got booted from their dorms for the week.

Here's how this week has gone so far:

Saturday:
Went out to the G-man for a few drinks.

Sunday:
Took a day trip to Gettysburg. I've been there before but it's always a good time. We couldn't have asked for a better day, though it was sort of windy. We also discovered a nice microbrewery in town, Appalachian Brewing Company. They had great beer, and I highly recommend the Chicken pot pie.

Monday:
Recovered from Sunday, then we all dressed up in cap and gown and went around campus to take some pictures before it get's too busy over the weekend. That night the bunch of us went out to Pickles to celebrate Joe's birthday.

Tuesday:
We went on a road trip to Philly for to catch a phillies game. On the way we stopped by Shady Maple for an amazing breakfast. In philly we took a tour of Independence Hall, then met up with Justin and his girlfriend, Heather who goes to temple, for cheesesteaks at Pats(we had to compare with genos after a trip there 2 years ago for the PSU/temple football game). We then headed over to the ballpark for Dollar Dog Night. The phillies won 5-3 with Jayson Werth stealing home plate. After the game we stopped for the night in Topton.

Today:
This morning after a nice breakfast at home (Thanks for the lemon meringue pie, mom!) we stopped at Pottsville for a tour of the Yuengling Brewery to start off the bar tour at 10:45 am. This afternoon, we're doing a meteorology senior bar tour around state college to finish off the year inebriated.


Graduation's only two days away. It's hard to get too depressed about that though because the day after means we'll finally be joining the Vortex2 group.

In V2 news, the team is out in Oklahoma today with what should be the first chance for tornadoes! Also, check the Reading Eagle for an upcoming article about myself and Ben participating.


That's all for today--the next post is likely to be from the road!

Friday, May 8, 2009

Welcome


Hello all!

I'll be spending 4 weeks of this summer out in the field chasing tornadoes in the Great Plains. I'm taking part in VORTEX2 (Verification of the Origins of Rotation in Tornadoes Experiment 2) --the largest tornado field experiment ever attempted. Due to popular demand, I've decided to fire up a blog to document my journeys and sights for friends and family. Stay tuned over the next few weeks for as many pictures and videos as I can take (hopefully a few close encounters with some tornadoes). I'll try to keep this updated as often as possible in between visits to gas stations and cheap motels across the plains.


A little background info:

VORTEX2 starts May 10th. I'll be hanging back with Kevin (one of my roommates and another senior in meteo) for graduation, but we'll be driving out to Oklahoma to meet up with the experiment the day after graduation (next saturday).

The project will have over 40 research vehicles with nearly 100 scientists participating from a bunch of different universities and government research agencies. The team from PSU will be driving around in Mobile Mesonets, which are minivans with a roof-rack weather station that can monitor windspeeds, temperature, and relative humidity. We'll be driving through some of the coolest (and most dangerous) parts of the storm in order to get up close measurements near tornadoes.

Other parts of the project include mobile weather balloon stations, 10 mobile radars on flatbed trucks, unmanned aircraft to fly into the storms, tornado "pods" to be dropped right in the path of tornadoes, fixed observing weather stations, and a few people taking pictures and video as well.

Since we're totally nomadic, we can operate anywhere from Texas to South Dakota between roughly the Rockies and the Mississippi River. This also means we'll be hopping from town to town, likely staying in a different motel every night.

For more info, check out the website at www.vortex2.org

We'll also be covered live on the weather channel live every night that we're chasing from 7-10pm. This should give everyone a good idea of what is going on, and you might even get a glimpse of me and the other Penn Staters.

That's all for now--time to enjoy the last week as an undergrad!