Mesoscale Discussion 1893
Issued: · Valid: –
Summary
Damaging wind gusts of 55 to 70 mph are possible across southeast Pennsylvania, northeast Maryland, northern Delaware, and southern New Jersey through approximately 11:00 AM EDT. The threat may increase as an ongoing thunderstorm complex moves through the region.
Product Text
000 ACUS11 KWNS 101330 SWOMCD SPC MCD 101329 NJZ000-PAZ000-DEZ000-MDZ000-101500- Mesoscale Discussion 1893 NWS Storm Prediction Center Norman OK 0829 AM CDT Mon Aug 10 2026 Areas affected...southeast Pennsylvania...northeast Maryland...northern Delaware...and southern New Jersey Concerning...Severe potential...Watch possible Valid 101329Z - 101500Z Probability of Watch Issuance...40 percent SUMMARY...Damaging wind potential may increase with an ongoing MCS. Convective trends are being monitored for a possible severe thunderstorm watch. DISCUSSION...As of 1325Z, radar imagery showed a small MCS with a leading bow structure moving through Lebanon and Lancaster Counties in southeast PA at around 30 kt. The system has a history of producing wind damage; however, recent radar trends indicate decreasing echo heights, potentially suggesting a weakening trend. Visible satellite shows cloud-free skies ahead of the MCS with temperatures already around 80 degrees observed within the inflow air mass. Modification of the 12Z PIT sounding for similar boundary-layer conditions suggests that only minimal convective inhibition exists for surface-based parcels. As such, it's possible the MCS could restrengthen within the next hour or so with an increased potential for damaging winds. ..Mead/Hart.. 08/10/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...PHI...CTP...LWX... LAT...LON 40247720 40527662 40437525 40207420 39827398 39457409 39397467 39517593 39637700 40247720 MOST PROBABLE PEAK WIND GUST...55-70 MPH