8/30/2026 11:24:00 PM until 8/31/2026 2:00:00 AM

At 1124 PM EDT, Doppler radar and automated rain gauges indicated thunderstorms produced heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... West Chester, Coatesville, Westtown, Downingtown, Kennett Square, Parkesburg, Marshallton, West Goshen, Atglen, South Coatesville, Modena and Thorndale.