Mesoscale Discussion 1098
NWS Storm Prediction Center Norman OK
0509 PM CDT Fri Jun 25 2021
Areas affected...Texas Panhandle...northwestern
Concerning...Severe Thunderstorm Watch 315...
Valid 252209Z - 252345Z
The severe weather threat for Severe Thunderstorm Watch 315
SUMMARY...Cluster of severe thunderstorms should spread east this
evening. New severe thunderstorm watch may be warranted.
DISCUSSION...Scattered strong/severe thunderstorms have evolved over
the TX Panhandle into northwestern OK within steep low-level lapse
rate environment. Surface dew points are also holding just ahead of
this activity despite surface temperatures in the mid-upper 90s.
Satellite imagery suggests storm-top evacuation is beginning to
increase over the northeast TX Panhandle, and if clustering
continues there is a greater propensity for this activity to
propagate downstream into western/northern OK. Additionally, LLJ is
expected to strengthen across the southern Plains after sunset and
this should contribute to forward propagation as well.
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