Alert archive / New York / Flash Flood Warnings
Flash Flood Warnings in New York, 2021
145 flash flood warnings in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Flash Flood Warnings
- 145
- Busiest month
- July54 flash flood warnings
- Busiest day
- June 8, 202110 flash flood warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 1:07 PM EDT | Flash Flood Warning | OKX | Orange | 3 hr |
| Jun 8, 1:23 PM EDT | Flash Flood Warning | ALY | Ulster | 2 hr |
| Jun 8, 2:53 PM EDT | Flash Flood Warning | ALY | Greene | 2 hr |
| Jun 8, 3:30 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 3 hr |
| Jun 8, 3:49 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond | 2 hr |
| Jun 8, 4:31 PM EDT | Flash Flood Warning | OKX | Nassau, Queens | 56 min |
| Jun 8, 4:52 PM EDT | Flash Flood Warning | BGM | Chenango, Otsego | 3 hr |
| Jun 8, 5:47 PM EDT | Flash Flood Warning | BGM | Delaware | 3 hr |
| Jun 8, 5:53 PM EDT | Flash Flood Warning | BGM | Broome, Delaware | 63 min |
| Jun 8, 6:21 PM EDT | Flash Flood Warning | BGM | Delaware | 3 hr |
| Jun 9, 3:32 PM EDT | Flash Flood Warning | BUF | Allegany | 3 hr |
| Jun 9, 4:00 PM EDT | Flash Flood Warning | BUF | Cattaraugus | 3 hr |
| Jun 9, 5:04 PM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| Jun 9, 5:05 PM EDT | Flash Flood Warning | BGM | Sullivan | 85 min |
| Jun 9, 5:32 PM EDT | Flash Flood Warning | BGM | Sullivan | 118 min |
| Jun 9, 6:22 PM EDT | Flash Flood Warning | BUF | Cattaraugus | 116 min |
| Jun 19, 7:07 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Erie | 3 hr |
| Jun 21, 4:22 PM EDT | Flash Flood Warning | ALY | Hamilton | 44 min |
| Jun 30, 5:19 PM EDT | Flash Flood Warning | BGM | Broome, Chenango, Delaware | 51 min |
| Jun 30, 5:58 PM EDT | Flash Flood Warning | ALY | Columbia | 3 hr |
| Jul 1, 10:28 PM EDT | Flash Flood Warning | BUF | Genesee | 93 min |
| Jul 2, 3:30 PM EDT | Flash Flood Warning | OKX | Queens | 90 min |
| Jul 2, 8:11 PM EDT | Flash Flood Warning | BGM | Broome | 3 hr |
| Jul 2, 8:26 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 94 min |
| Jul 3, 6:12 PM EDT | Flash Flood Warning | BGM | Delaware | 2 hr |
| Jul 6, 2:16 PM EDT | Flash Flood Warning | BUF | Erie | 3 hr |
| Jul 7, 8:21 PM EDT | Flash Flood Warning | BGM | Steuben | 2 hr |
| Jul 7, 8:39 PM EDT | Flash Flood Warning | BUF | Allegany | 3 hr |
| Jul 8, 10:54 AM EDT | Flash Flood Warning | ALY | Columbia, Dutchess, Greene, Ulster | 3 hr |
| Jul 8, 3:15 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 3 hr |
| Jul 8, 3:53 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Westchester | 3 hr |
| Jul 8, 4:53 PM EDT | Flash Flood Warning | BUF | Monroe, Wayne | 3 hr |
| Jul 8, 5:06 PM EDT | Flash Flood Warning | OKX | Bronx, New York, Westchester | 3 hr |
| Jul 9, 8:08 AM EDT | Flash Flood Warning | ALY | Dutchess | 4 hr |
| Jul 9, 8:56 AM EDT | Flash Flood Warning | OKX | Nassau, Suffolk, Westchester | 3 hr |
| Jul 9, 9:44 AM EDT | Flash Flood Warning | OKX | Suffolk | 2 hr |
| Jul 11, 7:20 PM EDT | Flash Flood Warning | BGM | Broome, Chenango, Tioga | 5 hr |
| Jul 11, 9:20 PM EDT | Flash Flood Warning | BGM | Chenango, Delaware, Otsego | 2 hr |
| Jul 11, 10:16 PM EDT | Flash Flood Warning | ALY | Schoharie | 3 hr |
| Jul 12, 1:11 AM EDT | Flash Flood Warning | BGM | Cayuga, Seneca, Tompkins | 3 hr |
| Jul 12, 6:06 AM EDT | Flash Flood Warning | BGM | Sullivan | 3 hr |
| Jul 12, 4:38 PM EDT | Flash Flood Warning | BGM | Steuben | 77 min |
| Jul 12, 6:09 PM EDT | Flash Flood Warning | OKX | Orange, Rockland | 3 hr |
| Jul 12, 6:37 PM EDT | Flash Flood Warning | BGM | Broome, Tioga | 3 hr |
| Jul 12, 7:05 PM EDT | Flash Flood Warning | BGM | Chemung, Tioga | 3 hr |
| Jul 12, 8:29 PM EDT | Flash Flood Warning | BGM | Broome, Delaware, Sullivan | 2 hr |
| Jul 14, 4:07 AM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua, Erie | 3 hr |
| Jul 14, 3:44 PM EDT | Flash Flood Warning | ALY | Rensselaer | 2 hr |
| Jul 14, 4:14 PM EDT | Flash Flood Warning | ALY | Rensselaer | 3 hr |
| Jul 14, 4:49 PM EDT | Flash Flood Warning | ALY | Rensselaer | 3 hr |
| Jul 14, 7:06 PM EDT | Flash Flood Warning | ALY | Columbia | 3 hr |
| Jul 16, 2:13 PM EDT | Flash Flood Warning | BUF | Chautauqua | 5 hr |
| Jul 16, 2:59 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua | 4 hr |
| Jul 17, 7:59 AM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| Jul 17, 3:15 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Erie | 6 hr |
| Jul 17, 4:55 PM EDT | Flash Flood Warning | BGM | Delaware, Sullivan | 4 hr |
| Jul 17, 5:31 PM EDT | Flash Flood Warning | ALY | Columbia, Dutchess | 4 hr |
| Jul 17, 7:23 PM EDT | Flash Flood Warning | BGM | Broome, Chenango, Delaware, Otsego | 2 hr |
| Jul 17, 8:12 PM EDT | Flash Flood Warning | ALY | Dutchess | 3 hr |
| Jul 17, 8:24 PM EDT | Flash Flood Warning | BGM | Steuben | 114 min |
| Jul 17, 8:27 PM EDT | Flash Flood Warning | BGM | Otsego | 77 min |
| Jul 17, 8:41 PM EDT | Flash Flood Warning | BGM | Sullivan | 113 min |
| Jul 18, 4:49 PM EDT | Flash Flood Warning | ALY | Columbia | 3 hr |
| Jul 19, 3:34 PM EDT | Flash Flood Warning | BGM | Oneida | 4 hr |
| Jul 19, 6:03 PM EDT | Flash Flood Warning | ALY | Fulton, Montgomery | 5 hr |
| Jul 20, 4:49 PM EDT | Flash Flood Warning | BUF | Niagara | 6 hr |
| Jul 20, 6:21 PM EDT | Flash Flood Warning | BUF | Erie, Niagara | 4 hr |
| Jul 20, 6:55 PM EDT | Flash Flood Warning | BGM | Oneida | 49 min |
| Jul 20, 8:28 PM EDT | Flash Flood Warning | BGM | Chenango, Otsego | 2 hr |
| Jul 20, 8:49 PM EDT | Flash Flood Warning | BGM | Steuben | 3 hr |
| Jul 20, 9:28 PM EDT | Flash Flood Warning | BGM | Broome, Chenango | 3 hr |
| Jul 20, 10:54 PM EDT | Flash Flood Warning | BGM | Chemung | 3 hr |
| Jul 29, 7:50 PM EDT | Flash Flood Warning | ALY | Saratoga, Washington | 115 min |
| Jul 29, 8:48 PM EDT | Flash Flood Warning | ALY | Rensselaer, Washington | 117 min |
| Aug 7, 6:29 PM EDT | Flash Flood Warning | BUF | Livingston, Monroe | 94 min |
| Aug 10, 10:47 PM EDT | Flash Flood Warning | BUF | Jefferson, Lewis | 5 hr |
| Aug 13, 7:15 PM EDT | Flash Flood Warning | ALY | Albany | 2 hr |
| Aug 17, 4:17 PM EDT | Flash Flood Warning | BUF | Cayuga, Ontario, Wayne | 86 min |
| Aug 17, 6:27 PM EDT | Flash Flood Warning | BGM | Cayuga, Onondaga, Seneca, Yates | 3 hr |
| Aug 17, 8:59 PM EDT | Flash Flood Warning | BGM | Cayuga, Cortland, Onondaga, Tompkins | 3 hr |
| Aug 18, 6:38 PM EDT | Flash Flood Warning | BGM | Steuben | 5 hr |
| Aug 18, 10:28 PM EDT | Flash Flood Warning | BGM | Steuben | 5 hr |
| Aug 18, 10:40 PM EDT | Flash Flood Warning | BGM | Cayuga, Seneca, Tompkins, Yates | 5 hr |
| Aug 19, 12:35 AM EDT | Flash Flood Warning | BGM | Cortland, Onondaga | 4 hr |
| Aug 19, 6:12 AM EDT | Flash Flood Warning | BGM | Oneida | 3 hr |
| Aug 20, 10:09 PM EDT | Flash Flood Warning | BGM | Steuben | 3 hr |
| Aug 21, 6:00 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua | 4 hr |
| Aug 21, 8:46 PM EDT | Flash Flood Warning | OKX | Kings, Queens | 5 hr |
| Aug 21, 10:18 PM EDT | Flash Flood Warning | OKX | New York | 4 hr |
| Aug 21, 10:47 PM EDT | Flash Flood Warning | OKX | Bronx, Nassau, New York, Queens | 103 min |
| Aug 22, 1:22 AM EDT | Flash Flood Warning | OKX | Richmond | 117 min |
| Aug 22, 2:44 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond, Rockland and 1 more | 3 hr |
| Aug 22, 3:17 PM EDT | Flash Flood Warning | OKX | Kings, Nassau, Queens | 2 hr |
| Aug 22, 4:51 PM EDT | Flash Flood Warning | OKX | Bronx, New York, Orange, Rockland, Westchester | 6 hr |
| Aug 22, 8:52 PM EDT | Flash Flood Warning | BGM | Madison | 3 hr |
| Aug 22, 9:09 PM EDT | Flash Flood Warning | BGM | Chenango | 3 hr |
| Aug 23, 1:28 PM EDT | Flash Flood Warning | ALY | Greene, Ulster | 3 hr |
| Aug 25, 7:36 PM EDT | Flash Flood Warning | BUF | Allegany, Livingston, Wyoming | 2 hr |
| Aug 27, 2:28 PM EDT | Flash Flood Warning | BGM | Steuben | 4 hr |
| Aug 27, 3:58 PM EDT | Flash Flood Warning | OKX | Kings, Richmond | 2 hr |
| Aug 27, 4:46 PM EDT | Flash Flood Warning | OKX | Bronx, New York, Queens | 89 min |
| Aug 27, 5:41 PM EDT | Flash Flood Warning | OKX | Richmond | 2 hr |
| Aug 27, 7:58 PM EDT | Flash Flood Warning | ALY | Ulster | 111 min |
| Aug 28, 3:40 AM EDT | Flash Flood Warning | OKX | Suffolk | 3 hr |
| Aug 28, 5:00 AM EDT | Flash Flood Warning | OKX | Suffolk | 95 min |
| Aug 29, 12:47 PM EDT | Flash Flood Warning | BUF | Niagara | 3 hr |
| Aug 29, 2:17 PM EDT | Flash Flood Warning | BGM | Seneca | 3 hr |
| Sep 1, 1:00 PM EDT | Flash Flood Warning | BGM | Sullivan | 11 hr |
| Sep 1, 3:34 PM EDT | Flash Flood Warning | OKX | Orange | 8 hr |
| Sep 1, 4:00 PM EDT | Flash Flood Warning | BGM | Sullivan | 10 hr |
| Sep 1, 5:54 PM EDT | Flash Flood Warning | OKX | Richmond | 6 hr |
| Sep 1, 5:58 PM EDT | Flash Flood Warning | ALY | Dutchess, Ulster | 6 hr |
| Sep 1, 6:51 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, Nassau, New York, Putnam, Queens and 3 more | 5 hr |
| Sep 1, 9:28 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Westchester | 2 hr |
| Sep 1, 10:08 PM EDT | Flash Flood Warning | OKX | Nassau, Westchester | 4 hr |
| Sep 1, 11:13 PM EDT | Flash Flood Warning | OKX | Suffolk | 6 hr |
| Sep 1, 11:38 PM EDT | Flash Flood Warning | ALY | Dutchess | 3 hr |
| Sep 1, 11:46 PM EDT | Flash Flood Warning | BGM | Sullivan | 74 min |
| Sep 1, 11:54 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond, Westchester | 3 hr |
| Sep 2, 12:25 AM EDT | Flash Flood Warning | OKX | Nassau, Queens, Suffolk | 4 hr |
| Sep 8, 8:48 PM EDT | Flash Flood Warning | ALY | Greene, Ulster | 3 hr |
| Sep 13, 12:25 AM EDT | Flash Flood Warning | BUF | Erie, Genesee, Wyoming | 3 hr |
| Sep 15, 1:21 PM EDT | Flash Flood Warning | ALY | Fulton, Montgomery | 3 hr |
| Sep 15, 1:37 PM EDT | Flash Flood Warning | ALY | Fulton, Montgomery, Saratoga, Schenectady | 3 hr |
| Sep 15, 1:48 PM EDT | Flash Flood Warning | ALY | Saratoga, Washington | 3 hr |
| Sep 15, 2:48 PM EDT | Flash Flood Warning | ALY | Rensselaer, Saratoga, Schenectady, Washington | 3 hr |
| Sep 15, 3:44 PM EDT | Flash Flood Warning | BGM | Otsego | 2 hr |
| Sep 15, 5:26 PM EDT | Flash Flood Warning | ALY | Ulster | 2 hr |
| Sep 15, 5:48 PM EDT | Flash Flood Warning | ALY | Columbia, Greene | 97 min |
| Oct 4, 4:50 PM EDT | Flash Flood Warning | BGM | Cortland | 5 hr |
| Oct 4, 5:27 PM EDT | Flash Flood Warning | BUF | Chautauqua | 2 hr |
| Oct 4, 5:38 PM EDT | Flash Flood Warning | BGM | Cortland | 4 hr |
| Oct 4, 6:49 PM EDT | Flash Flood Warning | BGM | Steuben | 2 hr |
| Oct 25, 10:33 PM EDT | Flash Flood Warning | OKX | Rockland | 3 hr |
| Oct 26, 10:49 AM EDT | Flash Flood Warning | BGM | Delaware, Sullivan | 5 hr |
| Oct 26, 11:42 AM EDT | Flash Flood Warning | BGM | Delaware, Otsego, Sullivan | 4 hr |
| Oct 26, 11:44 AM EDT | Flash Flood Warning | BGM | Delaware, Otsego | 4 hr |
| Oct 26, 2:26 PM EDT | Flash Flood Warning | BGM | Broome, Cayuga, Chenango, Cortland, Onondaga, Tioga and 1 more | 6 hr |
| Oct 26, 4:15 PM EDT | Flash Flood Warning | BGM | Cayuga | 4 hr |
| Oct 26, 4:20 PM EDT | Flash Flood Warning | BGM | Madison, Oneida, Onondaga | 3 hr |
| Oct 26, 4:41 PM EDT | Flash Flood Warning | BGM | Tompkins | 3 hr |
| Oct 26, 5:34 PM EDT | Flash Flood Warning | BGM | Cayuga, Schuyler, Seneca, Yates | 5 hr |
| Oct 26, 6:26 PM EDT | Flash Flood Warning | BGM | Broome, Tioga | 4 hr |
| Oct 29, 9:47 PM EDT | Flash Flood Warning | BGM | Schuyler, Steuben, Yates | 3 hr |
| Oct 29, 10:45 PM EDT | Flash Flood Warning | BGM | Steuben | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Queens County13
- Westchester County12
- Delaware County12
- New York County11
- Sullivan County11
- Steuben County11
- Bronx County10
- Broome County10
- Kings County9
- Chenango County9
- Rockland County8
- Nassau County8
- Otsego County8
- Cayuga County8
- Ulster County7
- Richmond County7
- Cattaraugus County7
- Chautauqua County7
- Suffolk County7
- Erie County6
- Columbia County6
- Dutchess County6
- Greene County5
- Tioga County5
- Seneca County5
- Tompkins County5
- Rensselaer County5
- Onondaga County5
- Cortland County5
- Orange County4
- Oneida County4
- Saratoga County4
- Washington County4
- Yates County4
- Allegany County3
- Fulton County3
- Montgomery County3
- Niagara County3
- Genesee County2
- Monroe County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
Sources
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. Rebuilt daily.