Immediate

Responsive action SHOULD be taken immediately

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

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.

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

At 452 PM EDT, a severe thunderstorm was located over Port Jefferson, moving east at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. This severe storm will be near... Port Jefferson and Mount Sinai around 455 PM EDT. For your protection move to an interior room on the lowest floor of a building.

Maryland Severe Thunderstorm Warning | Effective 05/20/2026 13:54

SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Northern Harford County in northern Maryland... Northwestern Cecil County in northeastern Maryland... East central Baltimore County in northern Maryland... * Until 545 PM EDT. * At 453 PM EDT, a severe thunderstorm was located over Pleasant Hills, or 10 miles west of Aberdeen, moving northeast at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches

Maryland Severe Thunderstorm Warning | Effective 05/20/2026 13:55

SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Southeastern Harford County in northern Maryland... Southeastern Baltimore County in northern Maryland... Central Cecil County in northeastern Maryland... * Until 530 PM EDT. * At 455 PM EDT, a severe thunderstorm was located over Back River, moving east at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches

West Virginia Severe Thunderstorm Warning | Effective 05/20/2026 13:56

SVRRLX The National Weather Service in Charleston West Virginia has issued a * Severe Thunderstorm Warning for... Central Lincoln County in central West Virginia... East central Wayne County in western West Virginia... West central Boone County in central West Virginia... * Until 530 PM EDT. * At 456 PM EDT, a severe thunderstorm was located over Ranger, or 12 miles southwest of Hamlin, moving northeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees.

West Virginia Severe Thunderstorm Warning | Effective 05/20/2026 13:57

At 457 PM EDT, a severe thunderstorm was located near Elkview, or 13 miles northeast of Charleston, moving east at 25 mph. HAZARD...Golf ball size hail and 70 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. Locations impacted include... Clendenin, Elkview, Amma, Glen, Pinch, and Left Hand.

Pennsylvania Severe Thunderstorm Warning | Effective 05/20/2026 13:29

SVRPHI The National Weather Service in Mount Holly NJ has issued a * Severe Thunderstorm Warning for... Southeastern Berks County in eastern Pennsylvania... Northwestern Montgomery County in southeastern Pennsylvania... Northeastern Chester County in southeastern Pennsylvania... * Until 515 PM EDT. * At 428 PM EDT, a severe thunderstorm was located over Birdsboro, or 7 miles southeast of Reading, moving east at 25 mph. This storm has a history of producing wind damage. HAZARD...60 mph wind gusts. SOURCE...Radar indicated.

New York Severe Thunderstorm Warning | Effective 05/20/2026 13:32

SVROKX The National Weather Service in Upton NY has issued a * Severe Thunderstorm Warning for... West central Suffolk County in southeastern New York... * Until 515 PM EDT. * At 432 PM EDT, a severe thunderstorm was located over Northport, moving east at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Minor hail damage to vehicles is possible. Expect wind damage to trees and power lines. * This severe thunderstorm will be near... Stony Brook around 445 PM EDT.

Pennsylvania Severe Thunderstorm Warning | Effective 05/20/2026 13:39

At 439 PM EDT, a severe thunderstorm was located over Gap, moving east at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... New Holland, Paradise, Strasburg, Quarryville, Gap, Churchtown, Atglen, Intercourse, Christiana, Blue Ball, Georgetown, and Gordonville. Stay inside a well built structure and keep away from windows.

West Virginia Severe Thunderstorm Warning | Effective 05/20/2026 13:39

SVRRLX The National Weather Service in Charleston West Virginia has issued a * Severe Thunderstorm Warning for... Northeastern Kanawha County in central West Virginia... Southwestern Roane County in central West Virginia... West central Clay County in north central West Virginia... * Until 530 PM EDT. * At 438 PM EDT, a severe thunderstorm was located near Sissonville, or 7 miles north of Charleston, moving east at 15 mph. HAZARD...Golf ball size hail and 60 mph wind gusts. SOURCE...Radar indicated.
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