NWS Mount Holly Issues Flood Watch for Portions of Delaware, New Jersey, and Pennsylvania
The National Weather Service in Mount Holly, New Jersey, has issued a Flood Watch active from noon today through late tonight for parts of northern Delaware, New Jersey, and southeast Pennsylvania. Excessive rainfall from multiple rounds of storms may lead to flash flooding across the region.
The Flood Watch was issued at 1:39 AM EDT on August 20 and is set to begin at 12:00 PM EDT today, continuing until 2:00 AM EDT on August 21. Multiple rounds of showers and thunderstorms are anticipated to move through the area from this afternoon into this evening.
According to the National Weather Service, rainfall rates of 1 to 3 inches per hour are possible during heavy downpours. Widespread rainfall totals of 1 to 2 inches are expected, with localized amounts reaching between 3 and 5 inches in the hardest-hit locations.
The alert covers portions of northern Delaware, including New Castle County, along with extensive areas in New Jersey such as Atlantic, Camden, Gloucester, Mercer, Middlesex, Monmouth, Ocean, Salem, and Somerset counties. In southeast Pennsylvania, the watch includes Philadelphia, Bucks, Chester, Delaware, and Montgomery counties.
Excessive runoff from these storms could lead to flooding in urban areas and locations with poor drainage. Additionally, rivers, creeks, and streams across the affected regions may rise out of their banks.