SPC MD 448

MD 0448 CONCERNING TORNADO WATCH 135... FOR FAR SOUTHEAST TX...WEST-CENTRAL LA

Mesoscale Discussion 0448
NWS Storm Prediction Center Norman OK
0701 PM CDT Wed Apr 22 2020

Areas affected...Far Southeast TX...West-Central LA

Concerning...Tornado Watch 135...

Valid 230001Z - 230130Z

The severe weather threat for Tornado Watch 135 continues.

SUMMARY...The environment remains supportive of all severe hazards,
including a strong tornado, downstream of the ongoing storm across
Jasper County TX.

DISCUSSION...Long-track supercell moving into Jasper County TX has
had a history of producing strong low-level rotation. Recent
signatures suggest the storms has undergone recycling of the
mesocyclone as it continues to move within a very favorable
environment. KPOE VAD recently sampled 0-1 km SRH over 450 m2/s2 and
70 kt of 0-6 km bulk shear. Temperatures ahead of the cell are in
the mid 70s with dewpoints in the low 70s. Mesoanalysis estimates
MLCAPE around 2000 J/kg. The strong buoyancy expected to persist
while the low-level jet gradually increases. The ongoing storm
continues to move unimpeded with the warm sector. In all, the
environment remains very favorable for storm persistence with a
continued threat for all severe hazards, including a strong tornado.

..Mosier.. 04/23/2020

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

ATTN...WFO...LCH...SHV...

LAT...LON   31229405 31319351 31379308 31209278 30749280 30539366
            30589414 31229405 

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