Alert archive / New York / Flash Flood Warnings
Flash Flood Warnings in New York, 2013
129 flash flood warnings in 2013. 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 2013. Tap one for its archive.
- Flash Flood Warnings
- 129
- Busiest month
- June36 flash flood warnings
- Busiest day
- July 1, 201314 flash flood warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
91 of 129 flash flood warnings covering New York in 2013 had a flash flood report inside them; 222 of 263 flash flood reports fell inside a warning, on average 119 minutes after it went out.
New York, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 129 | 91 | 29% | 263 | 84% | 119 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Binghamton, NY: flash flood warnings | 51 | 38 | 25% | 111 | 88% | 122 min |
| NWS Burlington, VT: flash flood warnings | 39 | 18 | 54% | 74 | 88% | 113 min |
| NWS Albany, NY: flash flood warnings | 54 | 38 | 30% | 133 | 83% | 115 min |
| NWS New York, NY: flash flood warnings | 43 | 33 | 23% | 122 | 91% | 88 min |
| NWS Buffalo, NY: flash flood warnings | 10 | 4 | 60% | 10 | 90% | 46 min |
An office's figures cover every county it serves, including across state lines.
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.
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 |
|---|---|---|---|---|
| Jan 30, 2:43 PM EST | Flash Flood Warning | BGM | Oneida | 6 hr |
| Jan 31, 6:51 AM EST | Flash Flood Warning | BTV | Clinton, Essex | 4 hr |
| Jan 31, 9:29 PM EST | Flash Flood Warning | BTV | Clinton | 6 hr |
| May 8, 7:43 AM EDT | Flash Flood Warning | OKX | Kings, New York, Richmond | 92 min |
| May 11, 4:01 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Richmond and 2 more | 89 min |
| May 22, 2:55 PM EDT | Flash Flood Warning | ALY | Saratoga, Schenectady | 2 hr |
| May 22, 3:18 PM EDT | Flash Flood Warning | ALY | Rensselaer, Saratoga, Washington | 3 hr |
| May 23, 1:00 PM EDT | Flash Flood Warning | OKX | Putnam, Rockland, Westchester | 90 min |
| May 23, 1:17 PM EDT | Flash Flood Warning | ALY | Dutchess | 11 hr |
| May 23, 3:01 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 119 min |
| May 23, 3:25 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond | 2 hr |
| May 23, 3:48 PM EDT | Flash Flood Warning | OKX | Westchester | 117 min |
| May 23, 4:50 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 3 hr |
| May 23, 7:43 PM EDT | Flash Flood Warning | OKX | Westchester | 5 hr |
| May 28, 10:03 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua | 4 hr |
| May 29, 6:18 PM EDT | Flash Flood Warning | ALY | Fulton, Herkimer, Montgomery | 3 hr |
| May 29, 7:12 PM EDT | Flash Flood Warning | ALY | Albany, Rensselaer, Saratoga, Schenectady | 3 hr |
| May 29, 8:36 PM EDT | Flash Flood Warning | BGM | Delaware | 3 hr |
| May 29, 9:25 PM EDT | Flash Flood Warning | ALY | Dutchess | 3 hr |
| Jun 2, 11:34 PM EDT | Flash Flood Warning | OKX | Bronx, New York, Queens | 116 min |
| Jun 7, 4:11 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Suffolk | 5 hr |
| Jun 7, 6:53 PM EDT | Flash Flood Warning | OKX | Suffolk | 3 hr |
| Jun 13, 2:30 PM EDT | Flash Flood Warning | ALY | Fulton, Herkimer, Montgomery | 3 hr |
| Jun 13, 4:14 PM EDT | Flash Flood Warning | BGM | Oneida | 3 hr |
| Jun 14, 3:28 PM EDT | Flash Flood Warning | ALY | Montgomery, Schoharie | 3 hr |
| Jun 14, 4:03 PM EDT | Flash Flood Warning | ALY | Schoharie | 3 hr |
| Jun 14, 5:27 PM EDT | Flash Flood Warning | ALY | Schoharie | 3 hr |
| Jun 23, 3:30 PM EDT | Flash Flood Warning | ALY | Herkimer | 6 hr |
| Jun 23, 3:52 PM EDT | Flash Flood Warning | BUF | Ontario | 3 hr |
| Jun 23, 6:06 PM EDT | Flash Flood Warning | BUF | Allegany, Cattaraugus | 3 hr |
| Jun 23, 8:21 PM EDT | Flash Flood Warning | BGM | Chemung | 3 hr |
| Jun 24, 4:18 PM EDT | Flash Flood Warning | ALY | Washington | 4 hr |
| Jun 24, 4:25 PM EDT | Flash Flood Warning | ALY | Herkimer | 6 hr |
| Jun 24, 5:05 PM EDT | Flash Flood Warning | BGM | Otsego | 3 hr |
| Jun 24, 6:10 PM EDT | Flash Flood Warning | BGM | Chenango | 3 hr |
| Jun 24, 7:10 PM EDT | Flash Flood Warning | OKX | Orange | 95 min |
| Jun 25, 4:35 PM EDT | Flash Flood Warning | BTV | Clinton | 7 hr |
| Jun 27, 6:11 PM EDT | Flash Flood Warning | BTV | Essex | 4 hr |
| Jun 27, 9:58 PM EDT | Flash Flood Warning | BGM | Broome | 6 hr |
| Jun 27, 9:59 PM EDT | Flash Flood Warning | BTV | Essex | 4 hr |
| Jun 27, 10:25 PM EDT | Flash Flood Warning | BGM | Chenango, Otsego | 6 hr |
| Jun 27, 11:55 PM EDT | Flash Flood Warning | BGM | Delaware, Sullivan | 4 hr |
| Jun 28, 12:32 AM EDT | Flash Flood Warning | ALY | Fulton, Herkimer, Montgomery | 12 hr |
| Jun 28, 2:06 AM EDT | Flash Flood Warning | BGM | Delaware, Otsego | 6 hr |
| Jun 28, 2:21 AM EDT | Flash Flood Warning | BGM | Madison, Oneida | 10 hr |
| Jun 28, 3:31 AM EDT | Flash Flood Warning | BGM | Oneida | 9 hr |
| Jun 28, 4:29 AM EDT | Flash Flood Warning | BGM | Chenango, Otsego | 3 hr |
| Jun 28, 5:36 AM EDT | Flash Flood Warning | BGM | Oneida | 3 hr |
| Jun 28, 7:23 AM EDT | Flash Flood Warning | BGM | Chenango | 5 hr |
| Jun 28, 8:28 AM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| Jun 30, 1:05 PM EDT | Flash Flood Warning | ALY | Schoharie | 3 hr |
| Jun 30, 2:42 PM EDT | Flash Flood Warning | BGM | Sullivan | 3 hr |
| Jun 30, 3:00 PM EDT | Flash Flood Warning | ALY | Dutchess | 5 hr |
| Jun 30, 3:37 PM EDT | Flash Flood Warning | ALY | Albany, Rensselaer | 3 hr |
| Jun 30, 7:05 PM EDT | Flash Flood Warning | ALY | Montgomery, Schoharie | 3 hr |
| Jul 1, 5:52 AM EDT | Flash Flood Warning | OKX | Orange | 4 hr |
| Jul 1, 6:18 AM EDT | Flash Flood Warning | ALY | Greene, Ulster | 6 hr |
| Jul 1, 8:21 AM EDT | Flash Flood Warning | ALY | Dutchess | 6 hr |
| Jul 1, 8:35 AM EDT | Flash Flood Warning | OKX | Orange, Rockland | 6 hr |
| Jul 1, 9:54 AM EDT | Flash Flood Warning | ALY | Columbia, Dutchess | 6 hr |
| Jul 1, 10:00 AM EDT | Flash Flood Warning | OKX | Orange, Putnam | 2 hr |
| Jul 1, 10:03 AM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond, Westchester | 6 hr |
| Jul 1, 2:51 PM EDT | Flash Flood Warning | BGM | Cortland | 9 hr |
| Jul 1, 3:54 PM EDT | Flash Flood Warning | BGM | Madison, Oneida | 12 hr |
| Jul 1, 4:28 PM EDT | Flash Flood Warning | ALY | Fulton, Herkimer, Montgomery | 10 hr |
| Jul 1, 4:44 PM EDT | Flash Flood Warning | BGM | Tioga, Tompkins | 6 hr |
| Jul 1, 5:03 PM EDT | Flash Flood Warning | BGM | Chenango, Cortland, Madison | 11 hr |
| Jul 1, 5:31 PM EDT | Flash Flood Warning | BGM | Broome, Tioga | 6 hr |
| Jul 1, 6:38 PM EDT | Flash Flood Warning | BGM | Otsego | 6 hr |
| Jul 1, 8:16 PM EDT | Flash Flood Warning | ALY | Herkimer | 4 hr |
| Jul 2, 6:53 PM EDT | Flash Flood Warning | ALY | Saratoga | 6 hr |
| Jul 4, 1:40 PM EDT | Flash Flood Warning | BTV | Clinton, Franklin | 6 hr |
| Jul 5, 7:36 PM EDT | Flash Flood Warning | ALY | Washington | 3 hr |
| Jul 5, 9:53 PM EDT | Flash Flood Warning | BGM | Madison | 6 hr |
| Jul 7, 2:24 PM EDT | Flash Flood Warning | ALY | Columbia | 6 hr |
| Jul 7, 6:17 PM EDT | Flash Flood Warning | BGM | Broome, Chenango, Otsego, Tioga | 4 hr |
| Jul 7, 7:31 PM EDT | Flash Flood Warning | BGM | Chenango | 6 hr |
| Jul 7, 8:44 PM EDT | Flash Flood Warning | ALY | Herkimer | 6 hr |
| Jul 7, 8:45 PM EDT | Flash Flood Warning | BGM | Madison, Oneida, Otsego | 6 hr |
| Jul 7, 9:19 PM EDT | Flash Flood Warning | ALY | Herkimer | 4 hr |
| Jul 7, 9:42 PM EDT | Flash Flood Warning | BGM | Oneida | 6 hr |
| Jul 8, 2:25 PM EDT | Flash Flood Warning | ALY | Columbia | 4 hr |
| Jul 8, 11:35 PM EDT | Flash Flood Warning | ALY | Albany, Rensselaer | 3 hr |
| Jul 10, 5:09 PM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| Jul 10, 11:39 PM EDT | Flash Flood Warning | BTV | Clinton, Franklin | 6 hr |
| Jul 19, 8:51 PM EDT | Flash Flood Warning | BUF | Erie, Niagara | 3 hr |
| Jul 22, 8:40 PM EDT | Flash Flood Warning | BGM | Delaware, Otsego | 3 hr |
| Jul 22, 10:18 PM EDT | Flash Flood Warning | OKX | Orange, Rockland | 117 min |
| Jul 22, 10:26 PM EDT | Flash Flood Warning | ALY | Columbia, Dutchess, Greene, Ulster | 6 hr |
| Aug 8, 8:37 PM EDT | Flash Flood Warning | BGM | Chemung, Cortland, Schuyler, Steuben, Tompkins | 7 hr |
| Aug 8, 9:48 PM EDT | Flash Flood Warning | BGM | Chenango, Cortland | 4 hr |
| Aug 8, 9:56 PM EDT | Flash Flood Warning | BGM | Broome, Chemung, Chenango, Cortland, Schuyler, Steuben and 2 more | 6 hr |
| Aug 9, 6:30 AM EDT | Flash Flood Warning | BTV | Franklin, St. Lawrence | 3 hr |
| Aug 9, 6:59 AM EDT | Flash Flood Warning | ALY | Columbia, Rensselaer, Washington | 6 hr |
| Aug 9, 8:05 AM EDT | Flash Flood Warning | OKX | Orange | 4 hr |
| Aug 9, 8:19 AM EDT | Flash Flood Warning | ALY | Dutchess, Ulster | 4 hr |
| Aug 9, 12:48 PM EDT | Flash Flood Warning | ALY | Dutchess | 3 hr |
| Aug 9, 5:18 PM EDT | Flash Flood Warning | ALY | Dutchess, Ulster | 117 min |
| Aug 13, 8:31 AM EDT | Flash Flood Warning | BGM | Delaware, Otsego | 4 hr |
| Aug 28, 10:29 AM EDT | Flash Flood Warning | BGM | Broome, Delaware | 3 hr |
| Aug 28, 1:20 PM EDT | Flash Flood Warning | OKX | Richmond | 115 min |
| Aug 28, 2:02 PM EDT | Flash Flood Warning | OKX | Orange, Rockland | 118 min |
| Aug 28, 3:50 PM EDT | Flash Flood Warning | OKX | Westchester | 115 min |
| Aug 31, 7:38 PM EDT | Flash Flood Warning | ALY | Columbia, Rensselaer | 3 hr |
| Sep 1, 4:16 AM EDT | Flash Flood Warning | OKX | Richmond | 119 min |
| Sep 1, 9:26 AM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 94 min |
| Sep 1, 12:09 PM EDT | Flash Flood Warning | OKX | Orange | 96 min |
| Sep 1, 4:12 PM EDT | Flash Flood Warning | ALY | Columbia, Rensselaer | 6 hr |
| Sep 1, 4:23 PM EDT | Flash Flood Warning | ALY | Dutchess | 6 hr |
| Sep 1, 4:55 PM EDT | Flash Flood Warning | BUF | Chautauqua | 3 hr |
| Sep 1, 6:04 PM EDT | Flash Flood Warning | BUF | Cattaraugus, Chautauqua | 3 hr |
| Sep 2, 8:47 AM EDT | Flash Flood Warning | BGM | Schuyler, Seneca, Tompkins | 4 hr |
| Sep 2, 1:02 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens | 118 min |
| Sep 2, 4:36 PM EDT | Flash Flood Warning | BUF | Cayuga, Oswego | 3 hr |
| Sep 2, 5:40 PM EDT | Flash Flood Warning | ALY | Dutchess, Ulster | 3 hr |
| Sep 2, 7:08 PM EDT | Flash Flood Warning | BGM | Chenango, Otsego | 4 hr |
| Sep 2, 8:21 PM EDT | Flash Flood Warning | BGM | Delaware | 3 hr |
| Sep 2, 9:33 PM EDT | Flash Flood Warning | BGM | Delaware | 3 hr |
| Sep 3, 10:56 AM EDT | Flash Flood Warning | OKX | Suffolk | 4 hr |
| Sep 11, 4:16 PM EDT | Flash Flood Warning | BGM | Broome, Chenango, Cortland, Tioga | 6 hr |
| Sep 11, 5:20 PM EDT | Flash Flood Warning | BGM | Broome, Tioga | 6 hr |
| Sep 11, 7:37 PM EDT | Flash Flood Warning | BUF | Allegany, Cattaraugus | 3 hr |
| Sep 11, 10:51 PM EDT | Flash Flood Warning | BTV | St. Lawrence | 4 hr |
| Sep 12, 2:38 AM EDT | Flash Flood Warning | BTV | St. Lawrence | 4 hr |
| Sep 12, 6:13 PM EDT | Flash Flood Warning | ALY | Columbia, Greene, Rensselaer | 4 hr |
| Sep 12, 6:27 PM EDT | Flash Flood Warning | OKX | Orange, Putnam, Rockland, Westchester | 2 hr |
| Nov 27, 5:41 AM EST | Flash Flood Warning | OKX | Rockland, Westchester | 5 hr |
| Dec 22, 4:58 AM EST | Flash Flood Warning | BTV | Clinton, Essex | 6 hr |
| Dec 22, 11:08 AM EST | Flash Flood Warning | BTV | Clinton, Essex | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Westchester County11
- Dutchess County11
- Chenango County11
- Rockland County10
- Otsego County10
- Herkimer County9
- Orange County9
- Oneida County8
- Rensselaer County8
- Delaware County8
- Columbia County8
- Clinton County7
- New York County7
- Broome County7
- Kings County6
- Richmond County6
- Bronx County6
- Queens County6
- Montgomery County6
- Cortland County6
- Tioga County6
- Essex County5
- Chautauqua County5
- Schoharie County5
- Madison County5
- Ulster County5
- Saratoga County4
- Washington County4
- Cattaraugus County4
- Fulton County4
- Tompkins County4
- Putnam County3
- Albany County3
- Suffolk County3
- Chemung County3
- Greene County3
- Franklin County3
- Schuyler County3
- St. Lawrence County3
- Nassau County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20122014
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. Warning verification from the Mesonet's Cow. Rebuilt daily.