Mesoscale Discussion 1153
NWS Storm Prediction Center Norman OK
0343 PM CDT Mon Jun 03 2024
Areas affected...southwestern through central Arkansas
Concerning...Severe Thunderstorm Watch 385...
Valid 032043Z - 032245Z
The severe weather threat for Severe Thunderstorm Watch 385
continues.
SUMMARY...A slowly organizing cluster of thunderstorms will
overspread much of central Arkansas, including the Little Rock
vicinity, through 5-7 PM CDT, with a continue risk for strong to
occasionally severe wind gusts. Trends will continue to be
monitored for a possible additional watch downstream, WW 385 could
be locally extended northeastward through central Arkansas.
DISCUSSION...The ongoing cluster of storms has become a bit better
organized, with a developing mesoscale convective vortex now east of
Fort Smith, and 50 kt west-northwesterly rear inflow in the 1-3 km
AGL layer evident on the Fort Smith VWP. The leading edge of the
convective outflow, and stronger convective development, is still
advancing eastward at a relatively modest 30+ kt. However,
boundary-layer destabilization is ongoing immediately ahead of the
outflow into central Arkansas, where 2-hourly surface pressure falls
are maximized (around 3 mb) near Little Rock. This could support at
least some further intensification and acceleration into early
evening.
..Kerr.. 06/03/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LZK...SHV...
LAT...LON 33959395 34369348 34999331 35649315 35869248 35509162
34729139 33449221 33329370 33959395
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