Severe Storm Outlook Narrative (AC)
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Issued by NWS
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222 ACUS11 KWNS 232321 SWOMCD SPC MCD 232320 PAZ000-MDZ000-WVZ000-VAZ000-OHZ000-240115- 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