Alert archive / New York / Severe Thunderstorm Warnings / 2009
Severe Thunderstorm Warnings in New York, August 2009
104 severe thunderstorm warnings in August 2009. 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in August 2009. Tap one for its archive.
- Severe Thunderstorm Warnings
- 104
- Busiest day
- August 10, 200935 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Aug 2, 1:05 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 40 min |
| Aug 4, 4:23 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Wyoming | 52 min |
| Aug 4, 5:35 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Livingston, Monroe, Ontario, Wyoming | 55 min |
| Aug 4, 7:10 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 65 min |
| Aug 4, 7:21 PM EDT | Severe Thunderstorm Warning | BTV | St. Lawrence | 54 min |
| Aug 4, 8:16 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, St. Lawrence | 59 min |
| Aug 5, 4:23 PM EDT | Severe Thunderstorm Warning | OKX | Nassau | 37 min |
| Aug 9, 12:07 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 53 min |
| Aug 9, 12:51 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Erie, Genesee, Livingston, Monroe, Wyoming | 54 min |
| Aug 9, 1:35 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 3 more | 55 min |
| Aug 9, 1:42 PM EDT | Severe Thunderstorm Warning | BGM | Seneca, Steuben, Yates | 42 min |
| Aug 9, 1:57 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Livingston | 63 min |
| Aug 9, 2:59 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Cortland, Tioga, Tompkins | 61 min |
| Aug 9, 3:28 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Tioga | 46 min |
| Aug 9, 8:58 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Monroe, Niagara, Orleans | 92 min |
| Aug 9, 9:28 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans, Wyoming | 77 min |
| Aug 9, 10:00 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Chenango, Cortland, Onondaga | 28 min |
| Aug 9, 10:08 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario, Wyoming | 67 min |
| Aug 9, 10:19 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Wyoming | 71 min |
| Aug 9, 10:28 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Ontario, Wayne | 65 min |
| Aug 9, 10:50 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Ontario and 1 more | 70 min |
| Aug 9, 11:17 PM EDT | Severe Thunderstorm Warning | BGM | Steuben | 43 min |
| Aug 10, 12:01 AM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua | 59 min |
| Aug 10, 2:40 PM EDT | Severe Thunderstorm Warning | BUF | Ontario, Wayne | 55 min |
| Aug 10, 2:56 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Seneca, Yates | 49 min |
| Aug 10, 3:17 PM EDT | Severe Thunderstorm Warning | BUF | Wayne | 58 min |
| Aug 10, 3:43 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Onondaga, Seneca | 62 min |
| Aug 10, 3:46 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Seneca, Tompkins | 44 min |
| Aug 10, 4:13 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Cortland, Madison, Onondaga, Tompkins | 62 min |
| Aug 10, 4:13 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga | 20 min |
| Aug 10, 4:29 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Onondaga | 46 min |
| Aug 10, 4:38 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Schuyler, Seneca, Tompkins, Yates | 52 min |
| Aug 10, 4:50 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Cortland | 55 min |
| Aug 10, 4:50 PM EDT | Severe Thunderstorm Warning | BUF | Niagara | 30 min |
| Aug 10, 4:56 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Cortland, Tompkins | 49 min |
| Aug 10, 5:00 PM EDT | Severe Thunderstorm Warning | BGM | Tioga | 60 min |
| Aug 10, 5:03 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Oneida | 57 min |
| Aug 10, 5:23 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Tioga | 52 min |
| Aug 10, 5:34 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Otsego | 56 min |
| Aug 10, 6:06 PM EDT | Severe Thunderstorm Warning | BGM | Delaware | 54 min |
| Aug 10, 6:12 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Sullivan | 63 min |
| Aug 10, 6:15 PM EDT | Severe Thunderstorm Warning | BGM | Oneida | 30 min |
| Aug 10, 6:21 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Wayne | 54 min |
| Aug 10, 6:24 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 66 min |
| Aug 10, 6:50 PM EDT | Severe Thunderstorm Warning | BUF | Wayne | 55 min |
| Aug 10, 6:54 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 66 min |
| Aug 10, 7:01 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 44 min |
| Aug 10, 7:30 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 45 min |
| Aug 10, 7:53 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 52 min |
| Aug 10, 8:09 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Putnam | 51 min |
| Aug 10, 8:10 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 36 min |
| Aug 10, 8:31 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 44 min |
| Aug 10, 8:48 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Tompkins | 42 min |
| Aug 10, 9:06 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 42 min |
| Aug 10, 9:11 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 32 min |
| Aug 10, 9:24 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Cortland | 51 min |
| Aug 10, 9:29 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 27 min |
| Aug 11, 3:18 PM EDT | Severe Thunderstorm Warning | BTV | St. Lawrence | 57 min |
| Aug 16, 7:57 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Schenectady | 63 min |
| Aug 18, 2:19 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus | 56 min |
| Aug 18, 3:18 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Wayne | 57 min |
| Aug 18, 3:43 PM EDT | Severe Thunderstorm Warning | BGM | Onondaga | 32 min |
| Aug 18, 3:52 PM EDT | Severe Thunderstorm Warning | BGM | Schuyler, Seneca, Yates | 23 min |
| Aug 18, 5:07 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer, Saratoga, Washington | 53 min |
| Aug 18, 5:31 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Otsego | 44 min |
| Aug 18, 5:49 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 26 min |
| Aug 18, 6:10 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Otsego | 50 min |
| Aug 18, 6:47 PM EDT | Severe Thunderstorm Warning | ALY | Schoharie | 58 min |
| Aug 18, 7:03 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Hamilton, Montgomery, Saratoga | 43 min |
| Aug 18, 9:43 PM EDT | Severe Thunderstorm Warning | OKX | Kings, New York, Queens, Richmond | 47 min |
| Aug 18, 10:15 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Nassau, Queens | 42 min |
| Aug 19, 4:55 PM EDT | Severe Thunderstorm Warning | ALY | Columbia | 28 min |
| Aug 20, 7:47 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 73 min |
| Aug 20, 7:56 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 79 min |
| Aug 20, 8:31 PM EDT | Severe Thunderstorm Warning | BUF | Orleans | 59 min |
| Aug 20, 8:59 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 61 min |
| Aug 20, 9:52 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 53 min |
| Aug 20, 10:04 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Monroe, Orleans | 56 min |
| Aug 20, 10:06 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 54 min |
| Aug 20, 10:31 PM EDT | Severe Thunderstorm Warning | BGM | Steuben | 59 min |
| Aug 21, 11:39 AM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 53 min |
| Aug 21, 12:03 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 57 min |
| Aug 21, 12:18 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 42 min |
| Aug 21, 12:28 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer, Saratoga, Schenectady, Washington | 62 min |
| Aug 21, 1:13 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer, Saratoga, Washington | 62 min |
| Aug 21, 1:36 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Greene, Ulster | 54 min |
| Aug 21, 1:48 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 57 min |
| Aug 21, 1:50 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 55 min |
| Aug 21, 2:01 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 44 min |
| Aug 21, 2:29 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Rensselaer | 61 min |
| Aug 21, 2:37 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 38 min |
| Aug 21, 2:57 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Greene, Ulster | 63 min |
| Aug 21, 3:02 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 29 min |
| Aug 21, 3:22 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Rensselaer | 53 min |
| Aug 21, 3:36 PM EDT | Severe Thunderstorm Warning | OKX | Putnam | 28 min |
| Aug 21, 3:48 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 27 min |
| Aug 21, 4:02 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess | 58 min |
| Aug 21, 4:09 PM EDT | Severe Thunderstorm Warning | OKX | Putnam, Westchester | 66 min |
| Aug 22, 4:53 PM EDT | Severe Thunderstorm Warning | BUF | Monroe | 33 min |
| Aug 22, 6:48 PM EDT | Severe Thunderstorm Warning | BUF | Wayne | 27 min |
| Aug 23, 6:03 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 32 min |
| Aug 29, 1:00 PM EDT | Severe Thunderstorm Warning | BUF | Ontario, Wayne | 60 min |
| Aug 29, 1:25 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Seneca | 65 min |
| Aug 29, 1:40 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 65 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Monroe County10
- Erie County9
- Cattaraugus County9
- Cayuga County9
- Wayne County9
- Genesee County8
- Wyoming County8
- Cortland County8
- Chenango County8
- Livingston County7
- Ontario County7
- Allegany County7
- Chautauqua County7
- Seneca County7
- Broome County7
- Sullivan County7
- Tompkins County6
- Ulster County6
- Columbia County6
- Niagara County5
- Orleans County5
- Onondaga County5
- Delaware County5
- Westchester County5
- Dutchess County5
- Saratoga County5
- Rensselaer County5
- Rockland County4
- Yates County4
- Tioga County4
- Orange County4
- St. Lawrence County3
- Nassau County3
- Steuben County3
- Madison County3
- Otsego County3
- Putnam County3
- Washington County3
- Lewis County2
- Schuyler County2
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.