New Jersey, Pennsylvania Severe Thunderstorm Warning | Effective 05/20/2026 14:15

Headline: 
Severe Thunderstorm Warning issued May 20 at 5:15PM EDT until May 20 at 6:00PM EDT by NWS Mount Holly NJ
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 20, 2026 - 2:15pm
Expires: 
May 20, 2026 - 3:00pm
Description: 
SVRPHI The National Weather Service in Mount Holly NJ has issued a * Severe Thunderstorm Warning for... Southeastern Hunterdon County in northwestern New Jersey... Mercer County in central New Jersey... North central Burlington County in southern New Jersey... Southwestern Somerset County in northern New Jersey... Montgomery County in southeastern Pennsylvania... Bucks County in southeastern Pennsylvania... Northeastern Chester County in southeastern Pennsylvania... Northeastern Philadelphia County in southeastern Pennsylvania... * Until 600 PM EDT. * At 515 PM EDT, a severe thunderstorm was located over Chalfont, or 19 miles north of Philadelphia, 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... Philadelphia, Trenton, Ewing, Norristown, Phoenixville, Lansdale, West Norriton, East Norriton, Princeton, Florence, Bristol, Perkasie, Doylestown, Byram, Hatboro, Souderton, Ambler, Collegeville, Royersford, and Chalfont.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Burlington, NJ; Hunterdon, NJ; Mercer, NJ; Somerset, NJ; Bucks, PA; Chester, PA; Montgomery, PA; Philadelphia, PA
Forcast Office: 
NWS Mount Holly NJ