Active Weather Alerts
Flash Flood Warning
Issued: 6:46 PM Jul. 31, 2025 – National Weather Service
The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Northern New Castle County in northern Delaware... Northwestern Gloucester County in southern New Jersey... Northwestern Salem County in southern New Jersey... South Central Delaware County in southeastern Pennsylvania... * Until 645 PM EDT. * At 246 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1 inch of rain has fallen. The expected rainfall rate is 1 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets, and underpasses. * Some locations that may experience flash flooding include... Wilmington, Newark, Chester, Pennsville, Carneys Point, Elsmere, Paulsboro, New Castle, Penns Grove, Swedesboro, Delaware City and Newport. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR INDICATED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE; EXPECTED RAINFALL RATE...1-3 INCHES IN 1 HOUR
Flash Flood Warning
Issued: 6:27 PM Jul. 31, 2025 – National Weather Service
The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Northwestern Camden County in southern New Jersey... North Central Gloucester County in southern New Jersey... Southeastern Bucks County in southeastern Pennsylvania... Eastern Delaware County in southeastern Pennsylvania... Southeastern Montgomery County in southeastern Pennsylvania... Philadelphia County in southeastern Pennsylvania... * Until 630 PM EDT. * At 227 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1 inch of rain has fallen. The expected rainfall rate is 1.5 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets, and underpasses. * Some locations that may experience flash flooding include... Philadelphia, Camden, Gloucester City, Bensalem, Yeadon, Bristol, Conshohocken, Palmyra, Hatboro, Folcroft, Ambler and Swarthmore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR INDICATED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE; EXPECTED RAINFALL RATE...1.5-3 INCHES IN 1 HOUR
Flash Flood Warning
Issued: 6:09 PM Jul. 31, 2025 – National Weather Service
The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Northeastern New Castle County in northern Delaware... Southwestern Delaware County in southeastern Pennsylvania... * Until 615 PM EDT. * At 209 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 1.5 inches of rain have fallen. The expected rainfall rate is 1.5 to 3 inches in 1 hour. Additional rainfall amounts of 1 to 1.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets, and underpasses. * Some locations that may experience flash flooding include... Chester, Swarthmore, Arden, Chelsea, Concordville, Lima, Chester Township, Elam, Gradyville, Talleyville, Nether Providence Township and Greenville. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR INDICATED; FLASH FLOOD DAMAGE THREAT...CONSIDERABLE; EXPECTED RAINFALL RATE...1.5-3 INCHES IN 1 HOUR
Flood Watch
Issued: 10:58 AM Jul. 31, 2025 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON 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, Camden, Gloucester, Hunterdon, Mercer, Middlesex, Northwestern Burlington, 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...From 2 PM EDT this afternoon through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Storm drains and ditches may become clogged with debris. * ADDITIONAL DETAILS... - A very warm and humid airmass will be in place ahead of an approaching cold front, which will push across the region through tonight. Widespread showers and thunderstorms are expected to develop this afternoon into tonight, which will be capable of producing heavy rainfall. Forecast rainfall amounts of 1 to 3 inches can generally be expected, with localized amounts of 5 to 7 inches or greater possible. Rainfall rates may exceed 2 inches per hour. Significant flash flooding is possible. - 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. Have multiple reliable ways to receive Flash Flood Warnings. If you encounter a flooded road, Turn Around, Don't Drown. &&
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