MD 1388 CONCERNING SEVERE THUNDERSTORM WATCH 449… FOR THE ALLEGHENY PLATEAU/ALLEGHENY MOUNTAINS VICINITY
Mesoscale Discussion 1388
NWS Storm Prediction Center Norman OK
0620 PM CDT Sun Jun 23 2024
Areas affected…the Allegheny Plateau/Allegheny Mountains vicinity
Concerning…Severe Thunderstorm Watch 449…
Valid 232320Z – 240115Z
The severe weather threat for Severe Thunderstorm Watch 449
continues.
SUMMARY…An appreciable increase in severe weather potential
appears unlikely, but localized damaging wind gusts remain possible
in isolated stronger cells spreading across and east of the
Allegheny Mountains through 8-10 PM EDT.
DISCUSSION…Despite the development of fairly numerous
thunderstorms across the Allegheny Plateau and mountains late this
afternoon, activity has struggled to substantively intensify in the
presence of rather modest deep tropospheric lapse rates, and
relatively weak large-scale forcing for ascent. It is not clear
that this will change appreciably during the next few hours, as the
boundary-layer gradually cools. However, downward mixing of 30-40
kt mean west-southwesterly lower/mid-tropospheric flow in isolated
stronger cells could continue to pose a risk for localized damaging
wind gusts as activity advects eastward through 00-02Z.
..Kerr.. 06/23/2024
…Please see www.spc.noaa.gov for graphic product…
ATTN…WFO…PHI…BGM…CTP…LWX…PBZ…RLX…
LAT…LON 38988143 40178074 41957717 41957590 41277538 40237647
39427775 38467947 38988143
