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Mesoscale Discussion 459 |
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Mesoscale Discussion 0459
NWS Storm Prediction Center Norman OK
0701 PM CDT Wed Apr 28 2021
Areas affected...South-central Texas
Concerning...Tornado Watch 120...
Valid 290001Z - 290130Z
The severe weather threat for Tornado Watch 120 continues.
SUMMARY...A threat for very large hail, wind damage and possibly a
tornado will move eastward into the San Antonio Metro around 8 pm
central.
DISCUSSION...The latest radar shows a cluster of severe storms
located about 60 statute miles to the west of San Antonio. Ahead of
these storms, the RAP is analying a pocket of strong instability
with MLCAPE near 4500 J/kg and 0-6 km shear near 50 kt. This
environment will be very favorable for supercells with large hail.
Hailstones of greater than 3 inches in diameter will be possible
with the stronger updrafts. Wind gusts exceeding 65 knots may also
occur, with the possibility of wind driven hail.
..Broyles/Guyer.. 04/29/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...EWX...
LAT...LON 29229768 29109871 29309934 29849916 30159786 30109717
29539710 29229768
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