|Mesoscale Discussion 662|
< Previous MD Next MD >
Mesoscale Discussion 0662
NWS Storm Prediction Center Norman OK
1025 PM CDT Thu May 21 2020
Areas affected...West-Central Texas
Concerning...Severe Thunderstorm Watch 199...
Valid 220325Z - 220500Z
The severe weather threat for Severe Thunderstorm Watch 199
SUMMARY...Severe threat may linger beyond 04z across portions of
west-central TX. Hail remains the primary concern.
DISCUSSION...Slow-moving supercells have progressed a few counties
off the dry line, but have yet to show appreciable decrease in
intensity despite boundary-layer decoupling. This may be partly due
to better low-level moisture being drawn into these storms as LLJ
strengthens across the High Plains. With 4-5 supercells likely still
producing severe hail, there is some concern the severe threat will
linger beyond the 04z watch expiration. While these storms should
eventually weaken, consideration should be given to extending the
watch in time for a few hours, possible a few counties east.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 31120053 32699988 32749873 32129898 31129878 31120053
Top/All Mesoscale Discussions/Forecast Products/Home