March 2nd,
2008 Eagle City, OK Tornado
March
2nd, 2008: Simon Brewer intercepted a tornadic supercell in Western/Central
OK. The supercell produced a tornado near Eagle City, OK northwest
of Watonga, OK.
The
two pics on the right are from SR 33 WSW of Watonga, OK looking north
at a very photogenic tornado.
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The
pic on the right is a surface analysis and projected forecast with
forecasted sfc boundaries and target area I created before I left
in the morning; a high amplitude shortwave was digging into New Mexico
and small perturbations in southwesterly flow helped to mix the dryline
east and initiate storms across KS, OK, and TX. I forecasted the dryline
to mix into Western OK and NW TX, while the cold front surged south
and southeast into NW OK and the TX Panhandle. The center of my target
was Hobart, OK, so I took Highway 9. I wanted to stay north of the
Red River where low-level shear was best and I didn't want to go too
far north of I-40 due to problems with the cold front undercutting
storms.
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I
parked on a gravel road a few miles north of Hobart and sat with my
dog 'Molly', while waiting for the CAP to break along the dryline.
The pic on the left is of weak towers showing up to my west along
the dryline. Larger towers began developing further north near I-40
I began driving north towards Cordell, and took the pic on the right
of an small anvil to my northwest towards I-40.
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I
filled up the tank in Cordell and decided to move further north to
Clinton. I parked on the south side of Clinton and watched large towers
develop along the dryline to my northwest, west and southwest. The
2 pics on the right are of a more vigorous tower west-southwest of
Clinton.
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Pic
on the left is a radar image showing the large cluster of towers and
small storms developing along the dryline in Western Oklahoma. According
to the data my nowcasters (Jim Bishop and Aaron Ruppert) were relaying
to me there was no 'hot spot' to be; so I decided to use visual interpretation
of my surroundings to guide me to the right storm.
Pic
on the right shows multiple updraft bases and rain shafts to my west.
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The
pic on the left is a mid-level funnel southwest of Clinton associated
with one of the more vigerous updrafts in the cluster of storms. The
pic on the right shows a well developed and heavy rain shaft as 2
updrafts merge southwest of Clinton.
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The
pic on the left shows better organization of the cells as they merge
west of Clinton and move northeast. I left my location south of Clinton
and drove north on SR 183 to keep up with the organizing storms. I
drove through some heavy rain and graupel, turned ENE on SR 33 and
stopped northeast of Thomas and watched a lone supercell take shape.
The pic on the right shows the single updraft and FFD of the new supercell.
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The
pics on the right are at the same location NE of Thomas, OK. They
show the storm getting better organized with a growing flanking-line
and small amounts of scud under the center of the strengthening mesocyclone.
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I
was really getting excited at this point, because an RFD clear slot
can be seen punching into the middle of the updraft base in the left
pic. The pic on the right shows the top of the updraft seen from my
location.
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Well,
the RFD punched pretty deep into the updraft and made a nice occlusion,
but little to no scud developed in the process, and the backside of
the updraft was showing fluctuations between 'fluffy' and 'crisp'
structure. I was concerned this region didn't get as much daytime
heating and the CAPE might have been insufficient for the storm to
continue intensifying. Pics on the right show the flanking line and
RFD clear slot.
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Here
is where I made my biggest mistake of the day and almost cost me witnessing
the Eagle City tornado: The pic on the left was from northeast of
Thomas and shows a nice supercell, but the cold front can be seen
in the background in the form a big gustfront and cloud bases. I made
a bad decision and tried to go south on SR 54 after a supposedly more
intense storm south of Weatherford. Only a few miles south on SR 54
I saw incredible amounts of scud rising into the occlusion on the
supercell I just left!!!! I made an immediate U-turn and gunned it
back north and northeast on SR 33. Due to my bad decision I lost considerable
ground on the supercell and was playing catch-up.
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The
pic on the right is of the supercell I just left after I made a U-turn
on SR 54 and was gunning it north. A large bowl funnel can be seen
on the occlusion.
The
pic on the left is a radar analysis near the time of this picture
showing the supercell and close location of the cold front.
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The
two pics on the right are video stills of the tornado as the full
condensed vortex was on the ground. I got only seconds of video at
this point because I was driving fast and holding an obtrusive video
camera in the general direction of the tornado. Shortly after this
time the tornado took more of a 'cone' or 'bowl' funnel shape with
a small dirt debris cloud underneath the funnel.
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The
2 pics on the right show incredible 'text book' supercell structure
with a large well defined flanking line, RFD clear slot, and occluded
tornado cyclone! These pics are looking north from near the intersection
of SR 33 and SR 270 west of Watonga. The tornado is on the ground
at this time and can be seen as a cone/bowl funnel in these pics.
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The
2 pics on the right are from SR 58 looking due north at absolutely
incredible supercell structure!! This storm transformed from a multicellular
mess into absolutely 'classic' supercell! Tornado is apparently still
on the ground with debris; funnel can clearly be seen and I witnessed
very rapid rotation with the funnel and tornado cyclone.
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I
parked on the south side of Canton and video taped the funnel and
wall cloud to my east as the storm propagated northeast away from
my location. The pic on the left is a vid still as the tornado crossed
SR 58 to my north, while I still was playing catch-up. The still on
the right shows the wall cloud and bowl funnel (on right side of wall
cloud) with lightning in background. A huge gust front (the cold front)
overtook me at about this time and the temp dropped quickly. It was
the end for this supercell.
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The
cold front surged ESE and undercut the supercell, so I hauled it southeast
hoping to catch some decent storms before nightfall near or south of
I-40. Aaron Ruppert informed me the cells south of I-40 were merging
into a line, so I decided to try my chances at lightning south of Minco,
OK. I parked south of Minco for a bit of time and watched the approaching
gust front, but not many CG's were occuring, so I headed back to Norman.
Pic on the right is the shelf cloud associated with the cold front storms
taken near Watonga.
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storm chasing (tornado, supercell, lightning, hail, sunset, ect.) photos and
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Copyright 2004 Stormgasm.com. All rights reserved.