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National Weather ServiceNew YorkFlash Flood WarningArchive to October 11, 2026

Flash Flood Warnings in New York

The National Weather Service issued 97 flash flood warnings for New York in 2025 and 92 a year on average in 2008-2025; in 2021-2025 it had the 19th most of any state. 2026 through September: 131, 51% above the average of 87 for those months in 2008-2025. Westchester was covered most often (146 times since 2008).

How many flash flood warnings does New York get?

97 flash flood warnings for New York in 2025
501001502002008: 9620082009: 9820092010: 5420102011: 18320112012: 4120122013: 12920132014: 11120142015: 7520152016: 3320162017: 7620172018: 9920182019: 6520192020: 6520202021: 14520212022: 3720222023: 15620232024: 9820242025: 9720252026: 13120262008-2025 average 922026 through September: 131501001502002008: 9620082009: 982010: 5420102011: 1832012: 4120122013: 1292014: 11120142015: 752016: 3320162017: 762018: 9920182019: 652020: 6520202021: 1452022: 3720222023: 1562024: 9820242025: 972026: 13120262008-2025 average 922026 through September: 131501001502002008: 9620082009: 982010: 5420102011: 1832012: 4120122013: 1292014: 11120142015: 752016: 3320162017: 762018: 9920182019: 652020: 6520202021: 1452022: 3720222023: 1562024: 9820242025: 972026: 13120262008-2025 average 922026 through September: 131501001502002008: 9620082009: 982010: 542011: 1832012: 412013: 1292014: 1112015: 7520152016: 332017: 762018: 992019: 652020: 6520202021: 1452022: 372023: 1562024: 982025: 972026: 13120262008-2025 average 922026 through September: 131

Every flash flood warning that covered part of New York. 2026 is an outline: the year is not over.

The numbers
YearCount
2026 (through September)131
202597
202498
2023156
202237
2021145
202065
201965
201899
201776
201633
201575
2014111
2013129
201241
2011183
201054
200998
200896

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

When in the year does New York get them?

New York's flash flood warnings by month, 2008-2025
200400600Jan: 21JanFeb: 10FebMar: 14MarApr: 26AprMay: 113MayJun: 245JunJul: 538JulAug: 421AugSep: 173SepOct: 39OctNov: 9NovDec: 49Dec538200400600Jan: 21JanFeb: 10FebMar: 14MarApr: 26AprMay: 113MayJun: 245JunJul: 538JulAug: 421AugSep: 173SepOct: 39OctNov: 9NovDec: 49Dec538200400600Jan: 21JanFeb: 10FebMar: 14MarApr: 26AprMay: 113MayJun: 245JunJul: 538JulAug: 421AugSep: 173SepOct: 39OctNov: 9NovDec: 49Dec538200400600Jan: 21JFeb: 10FMar: 14MApr: 26AMay: 113MJun: 245JJul: 538JAug: 421ASep: 173SOct: 39ONov: 9NDec: 49D538

Sum of 2008-2025; the busiest month is labelled.

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

Where in New York?

County or forecast zoneSince 2008Since 2023Last issued
Westchester14649September 13, 2026
Queens12427August 27, 2026
Broome11628August 3, 2026
Delaware10632August 28, 2026
Kings10625August 27, 2026
Rockland10529September 13, 2026
Chenango10428August 3, 2026
Orange10024July 28, 2026
Nassau9821August 27, 2026
Bronx9424August 27, 2026
Suffolk9320August 13, 2026
Cattaraugus9015September 3, 2026

The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

The latest flash flood warnings for New York in AreaZine's record

This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.

Source: National Weather Service alerts (api.weather.gov).

Every flash flood warning for New York in AreaZine's record

114 notices in AreaZine's record; the latest first below. Every one, oldest first: June 18, 2026 to September 13, 2026.

  1. Flash Flood Warning: Niagara, NY Niagara expired
  2. Flash Flood Warning: Fairfield, Middlesex, New Haven and 3 more, CT and NY Fairfield, Middlesex, New Haven and 3 more expired
  3. Flash Flood Warning: Bergen and Rockland, NJ and NY Bergen and Rockland expired
  4. Flash Flood Warning: Fairfield and Westchester, CT and NY Fairfield and Westchester expired
  5. Flash Flood Warning: Erie, Livingston and Wyoming County, NY Erie, Livingston and Wyoming County expired
  6. Flash Flood Warning: Erie and Wyoming County, NY Erie and Wyoming County expired
  7. Flash Flood Warning: Steuben, NY Steuben expired
  8. Flash Flood Warning: Allegany and Cattaraugus, NY Allegany and Cattaraugus expired
  9. Flash Flood Warning: Erie, Genesee, Niagara and 1 more, NY Erie, Genesee, Niagara and 1 more expired
  10. Flash Flood Warning: Essex, Union and Richmond, NJ and NY Essex, Union and Richmond expired
  11. Flash Flood Warning: Delaware County and Otsego, NY Delaware County and Otsego expired
  12. Flash Flood Warning: Otsego, NY Otsego expired
  13. Flash Flood Warning: Ulster, NY Ulster expired
  14. Flash Flood Warning: Ulster, NY Ulster expired
  15. Flash Flood Warning: Kings, Nassau and Queens, NY Kings, Nassau and Queens expired
  16. Flash Flood Warning: Bronx, Kings, New York County and 2 more, NY Bronx, Kings, New York County and 2 more expired
  17. Flash Flood Warning: Essex, Hudson, Union and 1 more, NJ and NY Essex, Hudson, Union and 1 more expired
  18. Flash Flood Warning: Richmond, NY Richmond expired
  19. Flash Flood Warning: Essex, Hudson, Union and 1 more, NJ and NY Essex, Hudson, Union and 1 more expired
  20. Flash Flood Warning: Bronx, Kings, Nassau and 3 more, NY Bronx, Kings, Nassau and 3 more expired

Source: National Weather Service alerts (api.weather.gov). A U.S. Government work, in the public domain.

What is a flash flood warning?

A flash flood warning means flash flooding is happening or about to happen: water rising fast in streams, streets or dry washes, usually within six hours of heavy rain or a dam or levee failure. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in New York.

How does New York compare with its neighbours?

Pennsylvania gets the most on New York's border: 136 a year in 2021-2025.

StateA year, 2021-2025A year, 2008-2025Rank of all states
Pennsylvania13611113th
New York1079219th
New Jersey574627th
Massachusetts282334th
Connecticut241937th
Vermont171343rd

Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 11, 2026.

More records for New York