Flash Flood Warnings in New York, 2026

By month

92 of 131 flash flood warnings covering New York in 2026 had a flash flood report inside them; 220 of 244 flash flood reports fell inside a warning, on average 108 minutes after it went out.

New York, 2026

Each office's whole area, 2026

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

• Westchester County16
• Kings County14
• New York County13
• Queens County13
• Richmond County13
• Delaware County10
• Rockland County10
• Bronx County10
• Ulster County9
• Sullivan County8
• Rensselaer County8
• Erie County7
• Saratoga County7
• Niagara County7
• Greene County7
• Otsego County6
• Onondaga County6
• Nassau County6
• Albany County6
• Schenectady County6
• Allegany County5
• Cortland County5
• Putnam County5
• Columbia County5
• Seneca County4
• Steuben County4
• Cattaraugus County4
• Livingston County4
• Chenango County4
• Broome County4
• Orange County4
• Madison County4
• Cayuga County3
• Oneida County3
• Suffolk County3
• Wyoming County3
• Orleans County3
• Dutchess County3
• Schuyler County2
• Tompkins County2

1. July 29, 202619flash flood warnings
2. July 6, 202610flash flood warnings
3. July 21, 20269flash flood warnings
4. August 7, 20269flash flood warnings
5. July 28, 20268flash flood warnings
6. August 3, 20268flash flood warnings
7. March 31, 20267flash flood warnings
8. August 27, 20267flash flood warnings
9. June 18, 20264flash flood warnings
10. July 18, 20264flash flood warnings
11. August 6, 20264flash flood warnings
12. September 13, 20264flash flood warnings

Alerts in force nowTornadoes on recordThe radar archive2025

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.