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May 27,
2001
Storm Chase
Northwest Oklahoma and Southwest Kansas
Editor: Putnam
Reiter
The Chase -
Team 1 - Andy Wallace, Rob
Ferguson, and Putnam Reiter
Team 2 - John Holsenbeck
Miles Driven - @600
Departure Time - 10:00 CDT
Return Time - 23:30 CDT
Sunday appeared to be a favorable day for chasing.
Northwest flow was predicted to continue across the area and become more
westerly by evening. At the surface, a surface low was to form in southeast
Colorado, maybe into southwest Kansas. A mid level shortwave was progged to drop
over the area during the afternoon, providing favorable lift across the region.
Afternoon LIs ended up near -8 and CAPE values around 4000 J/Kg.
Our target area was Liberal, Kansas, and which is where
we went. Storms developed early along the warm front across southern
Kansas/north Oklahoma, prompting a severe thunderstorm watch. A few hours later,
storms develop west and north of Liberal. We watched a storm from Hugoton,
Kansas, along with some OU researchers. To our east a squall line was organizing
and an outflow boundary was headed our way. We dropped south into the Oklahoma
panhandle and gathered more data. Radar data indicated that a line extended from
Wichita, Kansas to Medicine Lodge, Kansas, with three-four discrete storms
farther west.
By this time it was around 7:00pm and about time to head
home. The tornado threat appeared to have diminished, with transition to a wind
event. We started east and watched the gust front move rapidly towards us. We
stopped and setup video of the gust front as it approach. I successfully
measured 51.2mph wind before chickening out. I comfortably estimated the speed
at 60mph. We continued east towards Woodward, noting a turned over semi and
snapped power poles. We finally got southeast of Woodward and ran into another
blown over semi. We drove over a live power line, which unfortunately is on
tape.
We attempted to catch the storms; however the line had
formed a MCS and was moving rapidly south. Woodward had just regained power when
we got there and fueling stations were offline. We attempted to fill-up at other
location along Highway 3, with no luck. Every town between Woodward and
Kingfisher was without power. Eventually we got fuel in Kingfisher.
The storms were way ahead of us, blasting through
southern Oklahoma. Determining that the event was about over, we headed home.
The storms ended up moving all the way to Houston, resulting in a wide swath of
damage across Oklahoma and Texas.
Lessons Learned -
- Surface flow veered across
the threat area to 220. Even with northwest flow, you got to have surface
flow near 180.
Per number one, we went
too far west. It was easy, since the surface low was out there and warm
front convection scared us. The only tornadoes of the day formed near the
warm front.
Multimedia -
Pictures:
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12.
All of these are taken on Highway 270 in the Oklahoma Panhandle west of
Woodward, Oklahoma.
Encounters -
- Engaged Storm: Yes
Tornado: No
Funnel: No
- Hail (larger than 0.75
inches): Yes - Hugoton, Kansas
Wall Cloud: No
- Wind (above 57.4mph):
Yes
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