|Mesoscale Discussion 90|
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Mesoscale Discussion 0090
NWS Storm Prediction Center Norman OK
0139 PM CST Sat Feb 24 2018
Areas affected...Northeast TX to Central AR
Concerning...Tornado Watch 4...
Valid 241939Z - 242145Z
The severe weather threat for Tornado Watch 4 continues.
SUMMARY...Tornado threat continues across much of ww4.
DISCUSSION...Large-scale forcing is spreading across the central
Plains and this appears partly responsible for surface low migrating
into west-central AR as of 19z...just east of FSM. Attendant warm
front has advanced into northern portions of ww4 and surface low
should track along this boundary toward the MO Bootheel later this
afternoon as pressure falls focus across this region. LLJ has
strengthened across the Arklatex and shear profiles remain very
favorable for supercells and potential tornadoes. While the warm
front should continue to focus convection, especially just ahead of
the surface low, robust convection should increase south of the low
along the surging cold front over the next few hours. Damaging winds
will become increasingly likely with surging line segments that
mature along the cold front. Otherwise, tornado threat continues,
especially with supercells.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 34189575 35889124 33579124 31869574 34189575
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