Mesoscale Discussion 0609
NWS Storm Prediction Center Norman OK
0541 AM CDT Sun Apr 30 2017
Areas affected...Eastern AR...far northwest MS...and western TN
Concerning...Severe Thunderstorm Watch 178...179...
Valid 301041Z - 301145Z
The severe weather threat for Severe Thunderstorm Watch 178, 179
continues.
SUMMARY...Although a locally strong wind gust cannot be ruled out,
the overall severe weather threat across the remaining portions of
WW 178 and WW 179 will continue to greatly diminish early this
morning. WW 178 will be allowed to expire at 11Z.
DISCUSSION...Objective analyses indicated much of AR into western
TN/KY has undergone stabilization, given convective overturning.
Low-level warm air advection along a strong southerly low-level jet
(around 50 kt) per VADs at NQA/DGX will support additional
convective showers. Locally strong winds cannot be ruled out,
given the strong low-level winds, though the overall severe weather
threat should continue to diminish, given the more stable
environment.
..Peters.. 04/30/2017
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OHX...PAH...MEG...JAN...LZK...SHV...
LAT...LON 33629104 33259185 32539195 32479254 33739233 34119221
35469184 35979138 36469050 36548833 36328798 35378801
35348954 34878980 34379051 33629104
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