MD 0565 CONCERNING TORNADO WATCH 159... FOR NORTHEAST OKLAHOMA...NORTHWESTERN ARKANSAS...AND SOUTHWESTERN MISSOURI
Mesoscale Discussion 0565
NWS Storm Prediction Center Norman OK
0650 PM CDT Sun Apr 28 2024
Areas affected...Northeast Oklahoma...Northwestern Arkansas...and
Southwestern Missouri
Concerning...Tornado Watch 159...
Valid 282350Z - 290045Z
The severe weather threat for Tornado Watch 159 continues.
SUMMARY...Tornado threat continues in WW159. Corridor of more
favorable surface winds may support risk of a tornado.
DISCUSSION...Recent surface observations indicate winds across
northwestern Arkansas into southwestern Missouri are backing as
convection approaches from the south and west. This southeasterly
component has not handled well by recent RAP analysis data, which
may indicate low-level shear is more favorable across this corridor
than indicated in recent guidance. The VAD profile from KSRX (Fort
Smith WSR-88D) shows around 250-300 m2/s2 0-1km SRH. This area may
be a focused zone of potential for a tornado in the short term.
..Thornton/Smith.. 04/28/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...SGF...TSA...
LAT...LON 35799375 35519434 35489468 35479497 35509544 35619566
35859568 36089554 36249541 36569509 36789472 36899431
36909392 36839371 36579365 36309362 36089367 35799375
Read more
MD 0564 CONCERNING TORNADO WATCH 158... FOR EAST TX...NORTHWEST LA...SOUTHERN AR
Mesoscale Discussion 0564 NWS Storm Prediction Center Norman OK 0613 PM CDT Sun Apr 28 2024 Areas affected...East TX...Northwest LA...Southern AR Concerning...Tornado Watch 158... Valid 282313Z - 290015Z The severe weather threat for Tornado Watch 158 continues. SUMMARY...Severe threat will spread east of ww158 shortly. New tornado watch will likely be warranted immediately downstream. DISCUSSION...Sustained low-level warm advection will continue across the lower MS Valley early this evening in association with LLJ that is focused from the lower Sabine River Valley into western AR. Deep convection that evolved upstream over central TX has propagated east as the LLJ has shifted downstream. Multiple thunderstorm clusters have evolved with the leading edge of this activity now surging into Harrison/Panola County region. Over the next few hours this complex will advance beyond the eastern border of ww158 and a new tornado watch will likely be issued soon to account for this risk. ..Darrow.. 04/28/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LCH...SHV...HGX...FWD... LAT...LON 30809593 33559391 33169223 31369321 30809593Read more