Pennsylvania Severe Severe Thunderstorm Warning | Effective 07/21/2026 12:37

Headline: 
Severe Thunderstorm Warning issued July 21 at 3:37PM EDT until July 21 at 4:30PM EDT by NWS Mount Holly NJ
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
July 21, 2026 - 12:37pm
Expires: 
July 21, 2026 - 1:30pm
Description: 
SVRPHI The National Weather Service in Mount Holly NJ has issued a * Severe Thunderstorm Warning for... Central Chester County in southeastern Pennsylvania... Southwestern Delaware County in southeastern Pennsylvania... * Until 430 PM EDT. * At 337 PM EDT, a severe thunderstorm was located near Coatesville, or 12 miles west of West Chester, moving east at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Damage to roofs, siding, trees, and power lines is possible. * Locations impacted include... West Chester, Coatesville, Westtown, Downingtown, Parkesburg, Cheyney, Elam, Marshallton, Chelsea, Lionville-Marchwood, Gradyville, Paoli, Lionville, Concordville, Lima, West Goshen, Malvern, Chester Heights, South Coatesville, and Modena. This includes Pennsylvania Turnpike between mile markers 316 and 318, and between mile markers 320 and 323.
Instruction: 
A Tornado Watch remains in effect until 900 PM EDT for southeastern Pennsylvania. For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 900 PM EDT for southeastern Pennsylvania.
Area Description: 
Chester, PA; Delaware, PA
Forcast Office: 
NWS Mount Holly NJ