Flash Flood Warning — Cattaraugus County, New York

🌊 Active: Flash Flood Warning

Flash Flood Warning issued September 2 at 10:25PM EDT until September 3 at 12:45AM EDT by NWS Buffalo NY

At 1025 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2.5 and 3.5 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. 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... Olean, Salamanca, Wellsville, Allegany State Park, Ashford, Allegany, Franklinville, Belfast, Cuba, Rushford, Weston Mills, St. Bonaventure, Houghton, Caneadea, Hinsdale, Friendship, Great Valley, New Albion, Scio and Carrollton.

Effective September 2, 2026 at 10:25 PM ET · Expires September 3, 2026 at 12:45 AM ET

📋 Official NWS Guidance

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.