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5/10/10 REPORTS: OK/KS/TX

Basically the same as Pritchard, as he was in the passenger seat, but I went all stills, as usual, when I could. Also chased with Scott Kampas and Nate Williams.

Originally targeted South Haven, KS as per the 11z RUC, which we scoured while eating breakfast (and while I posted a paper for one of my classes) in TOP. As we drove south, it became clearer and clearer that OK was going to be the game, so we dropped further south to Blackwell, and then decided to head west to Enid to eat lunch and wait for the clearing, which was evident on vis as time passed.

After a lunch at Chili's in Enid, we noticed that the sun had come out and the atmosphere had QUICKLY destablized. We met Neal Rasmussen in a parking lot on the west side of Enid -- nice to meet someone with whom you've discussed weather and chasing for years, but never actually met -- and after a few minutes of talking and keeping our eye on the first returns almost immediately to our due west, we decided to shoot north and attempt an intercept, hoping that the storm would soon intersect the warm front and go nuts. Neal chose to remain in Enid a few more minutes, but I'm pretty sure later ended up on our cell with good results. The storm quickly gained a severe warning and, a few minutes later, a tornado warning.

We went west on US64, planning to get our first views of the storm near Nash, and later intercept just west of Jet. That's essentially what happened, and we watched it attempt to organize the first time about 10 miles west of Jet (we were approximately four miles west of Jet), and although nothing looked imminent, it began to take on the look of a storm that would eventually get the job done.

We broke back east, deciding to take SR 132 north out of Nash, all the way about 10 miles back to our east. We stopped about a tenth of a mile south of SR 11 and watched as the cell tried to get its act together, complete with a nice inflow tail directly over the highway.

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It did, and we were treated to a beautiful, backlit (albeit brief) rope a couple of miles to our west. It never fully condensed, but kicked up enough dust to confidently call this a tornado. It lasted about 40 seconds (as per Pritchard’s video), and we made the quick decision (before most on 132, which would later prove to be crucial) to get further northeast and prepare for its next act.

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It continued to exhibit several broad areas of rotation to the south of the road as we continued driving east to get ahead of it and look back. We didn’t have time. The storm, apparently, intersected the warm front and almost immediately got its act together, going from broad rotation to full-fledged tornado in no more than 30 seconds.

And then it got crazy.

We continued flying east on 11. With four of us in the car, it was much easier. Scott, Nate, and Andrew watched the tornado, and I had the extreme pleasure of driving through some serious chaser jackassery. It would appear most chasers had no clue that a significant tornado was bearing down on them (we were very near the outer circulation of the multivortex, and there were dozens of cars between us and the tornado), and people were pulling off the highway, trying to get back on, and switching lanes among other things, all without warning.

Many of those who were “pulled off” on the side were in fact out in the road, and those in front of us (not one car in particular) seemed to be forgetting that this strong tornado was bearing down at them at 50+mph, and that driving in its path with it less than 300 yards away at 35mph wouldn’t get the job done. I’m not surprised at all that many chasers sustained vehicle damage as a direct result of the tornado, and it’s no surprise about the tour group either. Good lord.

We dropped south on a county road (thank God it was paved; I believe this was Trenton Road) and escaped the immediate path of the tornado, and I
finally got a few stills of it.

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When we were still in doubt as to our position in relation to the tornado, we dropped even further south to E0150 Rd., where we got more video and got blasted by the very strong RFD.

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We allowed the tornado to pass to the northeast and watched as the circulation became much wider, but remained not fully condensed.

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I made the decision that I’d rather drop south and either try to catch it (which I knew was next to impossible), or catch the next returns to our south, than get back on Highway 11 and try to trail it. Glad we did the former, after hearing about the experience of Weberpal, et al. Besides, by that point the next supercell had formed to our south, and it seemed like it may become the new dominant cell (since the northern storm was passing into 64/60 air on the other side of the front) and was potentially catchable.

But we didn’t catch it. We were forced to drive south on I-35 and wait for the core to go by, since GRL3 was indicating 4” hail in the core. We timed it as well as possible but weren’t able to see the meso from the west (jealously guarded by rain and hail), but we were glad we made the play we did when we saw what appeared to be baseballs and larger sitting on the ground for no more than a minute or two. We tried playing catch-up with it to no avail, but we rejoined the weakened cell just east of Ponca City on 60 (great road network in this area…baha), which teased us with one final effort. A broad area of rotation in the area of interest tightened up JUST north of the road and did its best, but couldn’t finish the job.

As we plotted our route home to Illinois, in a “What the hell?” moment, we noticed a new tornado warning about 30 miles to our west. Now about 10 miles northeast of Pawhuska and 11 hours from home, we decided to intercept near Herd. The area of interest was visible, but a cell to its immediate south merged with it and cut off the inflow, otherwise we may have had a show all to ourselves, albeit not in good terrain.

After one final tease near (I think) Caney, KS, (which again got killed by cut-off inflow), we packed it up and finally headed home. We stopped and ate in Coffeyville, before making the 9-hour trek back to Canton, where we arrived about 6am.

After Wakita, it was a very frustrating day. But that definitely made the frustration worthwhile.
 
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I was one of the few that stayed south...

I had a pretty good feeling the cap would break in SW Oklahoma, and with storm motions near breakneck speeds and the massive convergence of people N or I-40, I decided to take my chances on the southern target.

Sat in Lawton, Ok for a while and saw storms initiate to our north that eventually ended up in Norman. Once storms fired south of Lawton, I figured that was our play and headed that way for some great chasing without anyone around. I think I saw 2 other chasers all evening! It was great!

Ended up on the cell that produced the tornado along the Red River. Was kind of interesting when that cell was coming together, we had a cell to our north that eventually ended up in Ardmore, and a cell to our south that was the one we tracked and filmed a beautiful trunk tornado out of. There were 2 cells there, and we picked the southern one for the simple reason that if they didn't split, and try to merge, I didn't want it sneaking up my backside. That, and the other was the "tail end Charlie" and I'll always feel comfortable playing that storm.

All in all it was a good day. The storm motions were manageable, and we had a great time just enjoying the weather. Not 300 other people getting in our way.

I have a ton of pictures and video that I've yet to go through, but this is the video we streamed LIVE to KTEN-TV out of Denison, Tx. They also embed my player on their website at www.kten.com

http://www.youtube.com/watch?v=51_FgEQheqM
 
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We started the day out by positioning ourselves on I-35, midway between Oklahoma City and the Kansas border. While many chose to play the tornadic supercell near Wakita, OK that dropped a multiple vortex beast, we instead chose to pursue the middle of the three supercells near Red Rock, Oklahoma. We caught a brief tornado (confirmed by later helicopter inspection). Unfortunately, since the storms were moving at 60mph, we only had one shot at seeing them. We then tried to blast Southeast through Tulsa, Oklahoma and catch the southernmost supercell (the one that had impacted Norman/Moore/OKC). However, we were unable to get in front of it without core-punching, and were unwilling to do so in such a dangerous storm with little light left. We eventually stopped and observed wonderful golden mammatus clouds shortly before sunset.

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Short: Intercepted the Red Rock supercell. Saw a nice wallcloud and funnel halfway to ground which failed to produce. I was unable to see any tornado at Red Rock even though it was just a few miles to my ne off Ih35. I assume this was because it was so weak - a barely nado? Would like to see pictures of it. Other than that screwed by the fast storm speed and road network. Assisted / streamed flipped semi-trailer and driver. Learned of my parent's and their friends amusing encounter with the Norman tornado...right outside the front door across the street.

Long: Like everyone else...I was also out. This day finds me sitting at Ardmore eating a Subway sandwich on the way to Norman / OKC. I had been on my way up from Austin early in the day. I knew it should likely be a big day (strong / violent tornadoes possibly long tracked with fast storm motions 55 to 75 knots). As such I had been having a bit of foreboding feeling of a tornado at OKC - perhaps similar to May 3rd, '99. I was worried about people blocking overpass traffic and myself getting caught. So it was almost an ESP thing. I wasn't the only one thinking this as I had talked to other chasers as well. I was about to go north and west and wait for something to develop and head into the metro area. Problem was I wasn't sure how I would ever navigate the traffic. Next thing I know I am talking to Gene Moore who then shows up at my location. We decide to blast north. In the process somewhere along the way storms form further north. For now I pass up the OKC area to go after the active northern area. I figured OKC would hold off awhile anyway due to Cinh.

Long story short (I am trying :D) we get on the supercell storm which is developing west of Perry. Already a storm has formed to our north almost to KS and is showing a 'debris ball' on reflectivity. We are torn between the two but with fast storm motions decide we may be too late to the northern cell and both of us are confident of the cell now to our nw. We get to Perry and start to take 77 / 164 but already appears we will be behind with fast storm movement. Instead we blast north idea being to take 64 west which runs to Enid. By the time we arrive at 64 it would have been the perfect west road to see the storm flank and wallcloud development; however Gene misses the turn and I forgot to notice as well. It is then I realize we are driving straight into the path of the core as we attempt to reach hwy 15 overpass. I did want to find a turn around but there were none. The middle of the highway had those metal collision cables and poles stretched and dividing N/S with no breaks. It was also a construction zone. I was a bit apprehensive because I still had my new (mostly undented SX4) and really didn't want to dent it because I'm planning on getting an old Jeep Cherokee to chase and want to save the SX4. Also I was aware of the explosive development, extreme instability, and very fast storm movement and wondered if I was about to be run over first by the hail, and then perhaps later by the tornado. I hate being on roads with no turn arounds or exits. Finally I reach the hwy 15 overpass and pull up alongside Gene with his happily dented Jeep Liberty and his giant hail guard hanging over the windshield (must be nice). To the west is an obviously heavy precip region which also contains a very dark (almost black) structure that appears to be the right side of a V shape, and it goes almost to ground where it then dissapears in precipitation. Yes, it occurred to me it could be a rain wrapped tornado - right there. In retrospect Gene ponders the feature as well...though I am not sure it corresponds to any rotation couplet on radar. Not sure exactly what it was. Anyway, I decide to bail south, and Gene decides to ride it out in his position. Turns out later I learn that he didn't have gps position in his GR3 and was only using Street Altlas gps to orient himself to the storm. He thought he was in position for the storms flank as it moved ne, but the storm actually had more of an easterly movement. As I bailed south trying to break to the flank area though the construction zone I thought any second the giant baseballs (or worse) were about to hit. I did get some smaller hail - largest probably quarter but not too bad. It was heavy precip. Anyway I broke and had a perfect view of the wallcloud. This storm had tremendous inflow. As I watched a classic cone funnel shape emerged and began to work it's way up to halfway to the ground. I thought "This is it!", but then it didn't. That funnel changed, the wallcloud morphed a bit, next came the RFD which screwed it all up and the whole wallcloud / inflow interface region passed over I35 to my north and on to the east toward Red Rock - not but a few miles away. I watched but it did not appear to do anything. I saw no tornado development. I wanted to follow the storm east and northeast but there were NO darn roads! I realized my first road was about 4 miles to my south but it was turnpike! I hate turnpikes because you never know when they will have exits. Hwy 77 ran next to I35 but I didn't think the turnpike would have an exit so then I passed it and headed for Perry. Then I realized Perry was 10 or 15 miles away and my storm would be long gone by then cause it was moving so fast. I whipped it back around and did the turnpike anyway. I find there is an exit to hwy 77 but I wait in line many minutes in traffic to pay the toll and exit. I go north and work east all the way to hwy 177 east of Red Rock but the storm is long gone!

Next, I head south and manage to catch another weak cell coming over hwy 177. It and another nearby cell are tornado warned but they look inferior and simply do not produce.

That's pretty much it. I get screwed on the whole deal due to road mistakes, crappy road setup and fast storm motions. Later on the way back on I35 near exit 194A I see a flipped over semi-trailer. I pass but then U turn in case assistance is needed. I stream the image of the truck on it's side. I didn't see it happen but a couple of people just ahead of me saw the truck go over. For some reason there were very high winds on the backside (westerly) of the supercells as they passed east. Wind was probably steady to 40mph with possible gusts over 60 estimated. At the time I was wondering about all the wind. Anyway the truck driver was lying on his back semi-conscious. He had been thrown 30 feet from the cab - apparently wearing no seat belts. One of the guys had called 911. I also logged it as 'Other' on Spotternetwork wth the gps position and exit number. Some type of surgeon was nearby on the scene helping, and then the EMT's and ambulance. I helped load him up and away I went. Hope the guy is ok. I am sure he will be but I suspect he had a broken left leg and internal injuries.

On another related note...I had been worried about my parent who had been to a graduation in Fayetteville, AR and were staying with my Aunt near Tulsa would be driving down the OKC/Tulsa turnpike into the storms on their way to visit their friends in Norman. They thankfully got there early in the morning and my Dad had time to go bass fishing in the afternoon before the storms. My Dad's friend lives near se12th off of hwy 9. Yep! I had a call from my Dad saying they were under a tornado warning. I looked and didn't see anything too impressive on radar. I told them to prepare to take cover, and asked if they had a storm shelter. He said 'No' that they would just get in the center of the house. I then told them to keep an eye outside to make sure they weren't about to get run over. Perhaps I shouldn't have said that. They went out the back (looking south) and found nothing. Then they went out the front and a tornado was passing in the field across the street from them only a few blocks away distance wise. They could easily see the debris field. They hid behind a tree and watched. The tornadic winds blew out a side door on the house diagonally across the street which then blew out the main 2 car garage door. It also pulled out a fairly large tree nearby most of the way. My folks and their friends...as well as their house were untouched however. Later I spent the night with them and heard the whole tale Turns out the radar didn't look impressive because I was using the wrong station too far away. Apparently my feelings of and OKC/Norman tornado were correct. I could have just gotten my lawn chair and sat outside the front yard of my Dad's friend's house and sipped cold drinks while casually watching the tornado pass in leisure. Surely this is the way true Gentlemen chase. Ah well!! :rolleyes: :o
 
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I'm a little bit late to the party... but just was reviewing video, thinking we had missed getting anything from the Pawhuska tornado after getting out of position on the Wakita storm... found this gem in my video from about the same time period as Tyler Burg from page 4 on this thread. You can tell from this picture that A) we were much farther away than Tyler was, and B) I need to run the windshield wipers more!

Got a nice video clip from a long distance of the funnel & the RFD near us on my personal site as well.

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Pharoah/Henryetta, OK tornadoes

Tornado SW of Pharoah, OK, ~7:00 pm CDT:

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Missed the action near OK City near rush hour- had to bypass the city and the storms on the turnpike, then cut south to 40 to catch cells after they moved east of OKC. Caught two tornadoes between 6:55 and 7:20 near Pharoah and Henryetta, OK. Kurt Hulst has a much nicer perspective on the Henryetta tornado. I was up on I-40, and by the time it got there, it had weakened a little, although several quick touchdowns and power flashes were noted. Tulsa surveyed a continuous damage track, so my impression is that this was a broad, low circulation doing damage at the ground without much in the way of condensation funnels, at least once it reached 40.

Full reports on the chlog- part 1 is back story; part 2 is the meat:

http://twistedtexas.blogspot.com/2010/05/chase-report-10-may-2010-part-1-wakita.html

http://twistedtexas.blogspot.com/2010/05/chase-report-10-may-2010-part-2.html

TonyC
 
Late report on last Monday, after returning early Friday morning and trying to catch up on homework and old posts (no time to read, when averaging 740 miles a day chasing). Still haven't read all, but need to jump in here, since am contemplating leaving again later today for a Tuesday chase in the panhandle.

Monday morning, my 10AM surface-based forecast picked southwest Kansas, but with no time to reach there, I went visual for western Oklahoma. By 2PM I began tracking the Wakita storm from northwest of Seiling. I was watching when it was first severe and tornado warned, but the base wasn't yet organized. NNE of Carmen, a brief but stout funnel quickly dropped 1/4 of the way down about 3:08 CDT. I turned north of Nash, when the Wakita tornado quickly formed a few miles ENE of me. I had camera problems and the video turned out shaky but saw the tornado drop, dirt bowl rapidly spin up, and multiple suction vortices stab the ground.

After turning east on Hwy 11, I didn't reach I-35 until after the Braman storm had crossed over and was racing away. I then turned south and east on Hwy 412, charging to Tulsa and then south to just north of Henryetta, trying to get ahead of the OK City/Norman storm --but didn't. I drove through moderate hail a few miles north, then just heavy, gusting rain to about a mile north of town. However, I didn't like the solid darkness just down the road, so turned around at 7:08 CDT. Apparently, a large tornado was about 2 miles SW of there and moving rapidly NE. Good call! Incidentally, Wakita was my 200th tornado; not as many as some resident plains chasers but OK for a low tech, solo, Virginia chaser after 53 years.
 
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