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Chase Day: April 21, 2004 PDF Print E-mail
Chase Logs - 2004 Chase Logs
Written by Chris Nuttall   
Thursday, 22 April 2004

This wound up being Day 2 or a rough week for eastern Oklahoma.  The was Day 2 of a stretch of four days of severe weather.  Tornadoes occurred each day somewhere in the state.  Tornadic supercells passed right through the heart of the Tulsa Metro area on two of these days dropping tornadoes just to the east of the City.

On this day, the dryline was set up just west of Oklahoma City.  I really didn't expect much from this day.  Instead, I came away with some of my best pictures and videos so far.

Target:  Shawnee, OK



Chase Partners:
Brian Porter
Location:
Central and Eastern Oklahoma
Miles Travelled:
300
Total Time:
7 Hours
 
5:00pm (2200 UTC)
I wasn't able to chase until late due to an exam.  I had all of my gear with me just in case.  I met Brian Porter on the top floow of the Oklahoma Memorial Stadium parking garage to watch a wall cloud pass to the north of Norman.  There were two more storms developing south of Norman, so we needed to hurry and leave.  We finally managed to get out of the city about 5:35pm.
 
5:57pm (2257 UTC)
Eventually, we ran into the precip core of a storm south of Norman as it began to cross OK-9.  Somehwere near Pink, near the Cleveland-Pottawatomie Coutnies lines, we hit a farily heavy core including some moderately heavy hail.  The largest hail recorded was about 1" (quarter-size), which we promptly radioed to NWS-OUN.  This lasted about 2-4 minutes.  We dropped south on OK-102 to watch some weak and unorganized rotation.  A UMASS Doppler truck passed us about this time.  The rotation was not very impressive and contrast was bad, so the video didn't turn out well.  We continued south, turned east, and headed through Macomb, OK, then headed back north on US-177.  A new storm started developing to the west near the OKC Metro.  So, we decided to head into Shawnee and wait for it.  Since it was pretty slow moving, we had the opportunity to eat and gas up the car.
 
7:22pm (0022 UTC)
We positioned ourselves on the west side of Shawnee.   We found a nice open field facing west, and I was treated to one of the most awesome views of storm structure I have ever seen (2.8 MB).   The storm was outflow dominant, which was evident by the extreme lack of surface inflow and the cold outflow winds as the storm approached.  We knew there really wasn't any danger of a tornado, so we could get very close (4.4 MB).   It really had the classic "mothership: view.  The mid-level striations were the best I've ever seen.  It's too bad the Sun was at a bad angle, because the exposure on my cameras just didn't pick up the mid-levels as well as I hoped.  They're good, but don't do the scene justice (3.8 MB).   We continued to follow the storm east, letting the wall cloud come to within one miles of us several times.  The storm basically travelled right down I-40, so we continued east, occasionally exiting and pulling off the road to watch.
 
8:20pm (0120 UTC)
 We began to lose light quickly.  We stopped for the final time about seven miles west of Okemah on I-40 to film the storm, hopefully getting some cool shots with the lightning causing some back-light effects.  We weren't disappointed.  Even though it was night, we could still clearly see the low- and mid-level rotation. Just for the heck of it, we drove on in to Tulsa and dropped off my video at KOTV.  We hung around for a bit waiting for some cells to clear I-44, so we could have a rain-free drive home.  We eventually left about 11:15pm, and got back home in Norman at 1:45am.
 
 
SUMMARY:

I  was a little disappointed about the lack of any tornadoes, especially given the potential.  However, since I expected the activity to mostly be over, I was quite pleased with out results.  Even though our storm did not produce a tornado, it was still visually impressive.  Most of the storms that day had very little chance to produce tornadoes as they quickly evolved into HPs.  Parts of Oklahoma City were inundated by some major hail.

It's still early in the season, and it's been relatively quiet.  I'm going to go out on a limb and predict a very active late May and early June.  So, I expect more chases to come this season.  Unless this turns out to be like 2002...notice the extreme lack of chase logs from that year. 


 
Last Updated ( Saturday, 23 August 2008 )
 
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