Pennsylvania Severe Thunderstorm Warning | Effective 05/20/2026 13:52

Headline: 
Severe Thunderstorm Warning issued May 20 at 4:52PM EDT until May 20 at 5:15PM EDT by NWS Mount Holly NJ
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 20, 2026 - 1:52pm
Expires: 
May 20, 2026 - 2:15pm
Description: 
At 452 PM EDT, a severe thunderstorm was located over Pottstown, or 16 miles east of Reading, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Damage to roofs, siding, trees, and power lines is possible. Locations impacted include... Pottstown, Phoenixville, Birdsboro, Collegeville, Royersford, Trappe, Schwenksville, Elverson, Bechtelsville, Green Lane, Pughtown, Spring Mount, Gilbertsville, Cedarville, Skippack, Stowe, Boyertown, Spring City, Red Hill, and Pottsgrove.
Instruction: 
For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Area Description: 
Berks, PA; Chester, PA; Montgomery, PA
Forcast Office: 
NWS Mount Holly NJ