Flood Watch

Locations Affected

Philadelphia, PA ∙ Allentown, PA ∙ Reading, PA ∙ Trenton, NJ ∙ Bethlehem, PA ∙ Camden, NJ ∙ Wilmington, DE ∙ Vineland, NJ ∙ New Brunswick, NJ ∙ Perth Amboy, NJ

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Mount Holly NJ 1255 PM EDT Thu Aug 20 2026 ...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northern Delaware, including the following area, New Castle, New Jersey, including the following areas, Atlantic, Camden, Coastal Atlantic, Coastal Ocean, Cumberland, Eastern Monmouth, Gloucester, Hunterdon, Mercer, Middlesex, Morris, Northwestern Burlington, Ocean, Salem, Somerset, Southeastern Burlington and Western Monmouth, and southeast Pennsylvania, including the following areas, Delaware, Eastern Chester, Eastern Montgomery, Lower Bucks, Philadelphia, Upper Bucks, Western Chester and Western Montgomery. * WHEN...Through late tonight. * IMPACTS...Flooding may occur in poor drainage and urban areas. Creeks and streams may rise out of their banks. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Showers and a thundertorms are expected through this evening. Rainfall rates of 1 to 3 inches per hour are possible in stronger storms. Total rainfall amounts of 1 to 2 inches are expected with some areas experiencing 3 to 5 inches of rainfall which could cause flash flooding. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

---