ZCZC SPCSWOMCD ALL
ACUS11 KWNS 040607 
SPC MCD 040607 
OKZ000-TXZ000-040730-

Mesoscale Discussion 0517
NWS Storm Prediction Center Norman OK
0107 AM CDT Tue May 04 2021

Areas affected...South-central Oklahoma and extreme north Texas

Concerning...Severe Thunderstorm Watch 139...

Valid 040607Z - 040730Z

The severe weather threat for Severe Thunderstorm Watch 139
continues.

SUMMARY...The risk for significant hail and strong wind gusts is
likely across southern Oklahoma over the next couple of hours.

DISCUSSION...As of 0550 UTC, three supercells were ongoing across
south-central Oklahoma in WW139. Radar signatures and recent reports
confirm these storms are capable of producing significant (2+ in
diameter) hail and severe wind gusts. A corridor of enhanced severe
potential is likely developing from the I-35 Corridor eastward into
southeastern Oklahoma. MUCAPE around 2000 J/kg and effective shear
of 50-60 kts will continue to support significant severe potential
for at least the next couple of hours before storms begin to
encounter more stable air behind the ongoing MCS across western
Arkansas.

..Lyons/Guyer.. 05/04/2021

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...TSA...FWD...OUN...

LAT...LON   34019809 34379815 34749779 34779711 34709629 34579568
            34329545 33889560 33799594 33759652 33769705 33879772
            34019809 

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