Alert archive / New York / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in New York, 2018
282 severe thunderstorm warnings in 2018. 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 2018. Tap one for its archive.
- Severe Thunderstorm Warnings
- 282
- Busiest month
- July68 severe thunderstorm warnings
- Busiest day
- May 4, 201833 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
185 of 282 severe thunderstorm warnings covering New York in 2018 had a qualifying storm report inside them; 514 of 692 hail, wind and damage reports fell inside a warning, on average 26 minutes after it went out.
New York, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 282 | 185 | 34% | 692 | 74% | 26 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: severe thunderstorm warnings | 71 | 45 | 37% | 135 | 80% | 23 min |
| NWS Binghamton, NY: severe thunderstorm warnings | 95 | 47 | 51% | 196 | 67% | 25 min |
| NWS Albany, NY: severe thunderstorm warnings | 112 | 75 | 33% | 349 | 83% | 25 min |
| NWS Burlington, VT: severe thunderstorm warnings | 40 | 35 | 13% | 81 | 83% | 30 min |
| NWS New York, NY: severe thunderstorm warnings | 43 | 28 | 35% | 231 | 73% | 34 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 23, 2:35 PM EST | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 40 min |
| May 3, 3:20 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chemung, Schuyler, Tioga | 40 min |
| May 3, 3:52 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Tioga | 38 min |
| May 3, 6:45 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 45 min |
| May 4, 3:35 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 55 min |
| May 4, 4:05 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 40 min |
| May 4, 4:08 PM EDT | Severe Thunderstorm Warning | BTV | St. Lawrence | 67 min |
| May 4, 4:10 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Monroe, Orleans, Wayne | 35 min |
| May 4, 4:27 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 33 min |
| May 4, 4:28 PM EDT | Severe Thunderstorm Warning | BTV | St. Lawrence | 62 min |
| May 4, 4:49 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Franklin, St. Lawrence | 56 min |
| May 4, 4:50 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 22 min |
| May 4, 4:59 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Jefferson, Lewis, Oswego | 61 min |
| May 4, 5:03 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Rensselaer, Ulster | 57 min |
| May 4, 5:07 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton, Herkimer | 23 min |
| May 4, 5:26 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Essex, Franklin, St. Lawrence | 64 min |
| May 4, 5:31 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton | 29 min |
| May 4, 5:32 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 58 min |
| May 4, 5:41 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Franklin | 64 min |
| May 4, 5:44 PM EDT | Severe Thunderstorm Warning | BUF | Lewis, Oswego | 61 min |
| May 4, 5:45 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Schuyler, Steuben, Tioga, Tompkins | 45 min |
| May 4, 5:49 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Cayuga, Chenango, Cortland, Madison, Oneida and 5 more | 41 min |
| May 4, 5:57 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Oneida, Onondaga | 48 min |
| May 4, 6:17 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, St. Lawrence | 42 min |
| May 4, 6:22 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Hamilton, Herkimer | 53 min |
| May 4, 6:24 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Essex | 66 min |
| May 4, 6:27 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Cortland, Madison, Oneida, Otsego and 2 more | 63 min |
| May 4, 6:34 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Tioga | 56 min |
| May 4, 6:37 PM EDT | Severe Thunderstorm Warning | BGM | Oneida | 23 min |
| May 4, 6:51 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Essex, Franklin, St. Lawrence | 44 min |
| May 4, 7:06 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Otsego | 54 min |
| May 4, 7:12 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Hamilton, Herkimer, Montgomery, Saratoga, Warren | 48 min |
| May 4, 7:29 PM EDT | Severe Thunderstorm Warning | BTV | Essex | 61 min |
| May 4, 7:34 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Montgomery, Schenectady, Schoharie | 56 min |
| May 4, 7:41 PM EDT | Severe Thunderstorm Warning | BTV | Essex | 51 min |
| May 4, 7:50 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Montgomery, Saratoga, Schenectady, Warren, Washington | 40 min |
| May 4, 7:59 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 48 min |
| May 4, 8:00 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Montgomery, Rensselaer, Saratoga, Schenectady, Schoharie and 1 more | 60 min |
| May 4, 8:19 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Columbia, Greene, Rensselaer, Schoharie | 56 min |
| May 4, 8:28 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer, Washington | 62 min |
| May 4, 8:34 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Greene, Ulster | 56 min |
| May 4, 8:56 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Rensselaer | 44 min |
| May 4, 9:14 PM EDT | Severe Thunderstorm Warning | ALY | Columbia | 61 min |
| May 10, 4:29 PM EDT | Severe Thunderstorm Warning | ALY | Schoharie | 46 min |
| May 10, 5:03 PM EDT | Severe Thunderstorm Warning | ALY | Albany | 31 min |
| May 15, 1:55 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Greene, Ulster | 50 min |
| May 15, 2:20 PM EDT | Severe Thunderstorm Warning | ALY | Greene, Ulster | 40 min |
| May 15, 2:25 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 50 min |
| May 15, 2:53 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Rensselaer | 53 min |
| May 15, 2:58 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Ulster | 62 min |
| May 15, 3:05 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 55 min |
| May 15, 3:07 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 38 min |
| May 15, 3:34 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 56 min |
| May 15, 3:34 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Putnam, Rockland, Westchester | 86 min |
| May 15, 3:42 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 48 min |
| May 15, 3:55 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 20 min |
| May 15, 4:51 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, Nassau, New York, Orange, Putnam and 5 more | 54 min |
| May 15, 5:28 PM EDT | Severe Thunderstorm Warning | OKX | Kings, Nassau, Queens, Suffolk | 47 min |
| May 22, 6:39 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Steuben | 33 min |
| May 28, 2:39 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Tompkins | 66 min |
| May 28, 3:17 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Cortland, Tioga, Tompkins | 43 min |
| May 28, 3:31 PM EDT | Severe Thunderstorm Warning | BGM | Tioga, Tompkins | 59 min |
| May 28, 3:43 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Tioga | 62 min |
| May 28, 4:13 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Tioga | 62 min |
| May 28, 4:52 PM EDT | Severe Thunderstorm Warning | BGM | Tioga | 38 min |
| Jun 1, 1:24 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Ontario, Wayne | 51 min |
| Jun 1, 2:16 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Wayne | 44 min |
| Jun 1, 3:35 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 25 min |
| Jun 1, 4:55 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Otsego | 50 min |
| Jun 1, 4:59 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Monroe, Ontario | 61 min |
| Jun 1, 7:16 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Warren, Washington | 48 min |
| Jun 13, 4:26 PM EDT | Severe Thunderstorm Warning | BUF | Erie | 28 min |
| Jun 13, 5:50 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Erie, Livingston, Wyoming | 70 min |
| Jun 13, 5:57 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 78 min |
| Jun 13, 6:36 PM EDT | Severe Thunderstorm Warning | BTV | St. Lawrence | 54 min |
| Jun 13, 6:37 PM EDT | Severe Thunderstorm Warning | BGM | Steuben | 38 min |
| Jun 13, 6:51 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 54 min |
| Jun 13, 7:17 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton, Herkimer | 43 min |
| Jun 13, 7:19 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, St. Lawrence | 56 min |
| Jun 13, 7:43 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 62 min |
| Jun 13, 7:54 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Cortland | 51 min |
| Jun 13, 8:10 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chemung, Chenango, Cortland, Tioga, Tompkins | 50 min |
| Jun 13, 8:27 PM EDT | Severe Thunderstorm Warning | ALY | Herkimer, Montgomery, Schoharie | 63 min |
| Jun 13, 8:46 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Otsego, Tioga | 59 min |
| Jun 13, 9:10 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Otsego, Sullivan | 65 min |
| Jun 13, 9:47 PM EDT | Severe Thunderstorm Warning | ALY | Warren, Washington | 28 min |
| Jun 18, 1:19 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 41 min |
| Jun 18, 2:14 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 46 min |
| Jun 18, 2:23 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Essex | 52 min |
| Jun 18, 2:30 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Herkimer, Montgomery | 45 min |
| Jun 18, 3:09 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton, Herkimer | 48 min |
| Jun 18, 3:37 PM EDT | Severe Thunderstorm Warning | BTV | Essex | 53 min |
| Jun 18, 4:06 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer, Washington | 54 min |
| Jun 18, 4:12 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 63 min |
| Jun 18, 4:37 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Franklin, St. Lawrence | 53 min |
| Jun 18, 4:48 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Madison, Otsego | 57 min |
| Jun 18, 5:11 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 49 min |
| Jun 18, 5:16 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Montgomery, Schoharie | 59 min |
| Jun 18, 5:44 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 31 min |
| Jun 18, 5:58 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 32 min |
| Jun 18, 6:09 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 21 min |
| Jun 18, 6:25 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 50 min |
| Jun 18, 6:39 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 66 min |
| Jun 18, 6:48 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 34 min |
| Jun 18, 7:07 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Putnam | 38 min |
| Jun 18, 7:15 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 24 min |
| Jun 18, 7:27 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua | 63 min |
| Jun 18, 7:33 PM EDT | Severe Thunderstorm Warning | ALY | Columbia | 57 min |
| Jun 18, 8:20 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Tioga | 40 min |
| Jun 18, 8:30 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 45 min |
| Jun 24, 8:00 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 45 min |
| Jun 28, 2:56 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 34 min |
| Jun 30, 10:44 PM EDT | Severe Thunderstorm Warning | BTV | Clinton | 61 min |
| Jul 2, 2:37 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego | 43 min |
| Jul 2, 3:30 PM EDT | Severe Thunderstorm Warning | BUF | Lewis, Oswego | 60 min |
| Jul 2, 3:55 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 49 min |
| Jul 2, 4:13 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 47 min |
| Jul 2, 4:50 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Onondaga | 25 min |
| Jul 2, 5:14 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Cortland, Madison, Onondaga | 46 min |
| Jul 2, 5:19 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, St. Lawrence | 56 min |
| Jul 2, 6:00 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Cortland, Madison | 45 min |
| Jul 2, 6:25 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Cortland, Tioga | 50 min |
| Jul 2, 7:17 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Tioga | 43 min |
| Jul 2, 7:25 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Warren, Washington | 65 min |
| Jul 3, 2:18 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 42 min |
| Jul 3, 2:29 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 46 min |
| Jul 3, 4:13 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 62 min |
| Jul 3, 4:59 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 46 min |
| Jul 4, 12:53 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 52 min |
| Jul 4, 3:36 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Putnam | 24 min |
| Jul 4, 5:38 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Erie | 47 min |
| Jul 5, 4:43 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Wyoming | 43 min |
| Jul 5, 6:21 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Monroe, Ontario, Wayne | 54 min |
| Jul 5, 10:14 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 29 min |
| Jul 10, 3:43 PM EDT | Severe Thunderstorm Warning | ALY | Warren, Washington | 47 min |
| Jul 10, 3:45 PM EDT | Severe Thunderstorm Warning | ALY | Warren | 16 min |
| Jul 10, 4:09 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Montgomery, Rensselaer, Saratoga, Schenectady, Schoharie | 66 min |
| Jul 14, 5:59 PM EDT | Severe Thunderstorm Warning | BGM | Otsego | 31 min |
| Jul 14, 6:13 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Schoharie | 62 min |
| Jul 14, 6:55 PM EDT | Severe Thunderstorm Warning | ALY | Greene, Ulster | 65 min |
| Jul 14, 7:53 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Schuyler, Steuben, Tioga | 52 min |
| Jul 14, 8:17 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Tioga | 43 min |
| Jul 16, 3:52 PM EDT | Severe Thunderstorm Warning | ALY | Ulster | 53 min |
| Jul 16, 4:28 PM EDT | Severe Thunderstorm Warning | BUF | Monroe | 47 min |
| Jul 16, 4:53 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Wayne | 44 min |
| Jul 16, 5:14 PM EDT | Severe Thunderstorm Warning | BUF | Ontario, Wayne | 61 min |
| Jul 16, 5:56 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 29 min |
| Jul 16, 6:35 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Onondaga | 40 min |
| Jul 16, 7:09 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Schuyler, Steuben | 51 min |
| Jul 16, 7:15 PM EDT | Severe Thunderstorm Warning | BGM | Cortland, Madison, Oneida, Onondaga | 60 min |
| Jul 16, 7:22 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 38 min |
| Jul 16, 7:43 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Oneida, Onondaga | 62 min |
| Jul 16, 7:57 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Chenango, Cortland, Tompkins | 63 min |
| Jul 16, 7:59 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 46 min |
| Jul 16, 8:40 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Tompkins | 65 min |
| Jul 16, 8:47 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 58 min |
| Jul 16, 9:03 PM EDT | Severe Thunderstorm Warning | BGM | Cortland, Tompkins | 42 min |
| Jul 16, 10:08 PM EDT | Severe Thunderstorm Warning | BUF | Genesee | 37 min |
| Jul 16, 10:23 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Steuben, Tioga | 52 min |
| Jul 16, 10:35 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 28 min |
| Jul 17, 1:19 AM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 56 min |
| Jul 17, 6:24 AM EDT | Severe Thunderstorm Warning | ALY | Fulton, Herkimer, Montgomery | 66 min |
| Jul 17, 12:06 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 24 min |
| Jul 17, 1:25 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Ulster | 65 min |
| Jul 25, 5:52 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Onondaga, Schuyler, Tompkins | 38 min |
| Jul 27, 1:00 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer, Saratoga, Schenectady, Washington | 60 min |
| Jul 27, 1:56 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer, Saratoga, Washington | 64 min |
| Jul 27, 2:03 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer, Saratoga | 27 min |
| Jul 27, 3:12 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 51 min |
| Jul 27, 4:45 PM EDT | Severe Thunderstorm Warning | OKX | Richmond | 45 min |
| Jul 27, 4:49 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Greene, Ulster | 56 min |
| Jul 27, 4:51 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Montgomery, Schenectady, Schoharie | 39 min |
| Jul 27, 5:14 PM EDT | Severe Thunderstorm Warning | OKX | Kings, New York, Queens | 35 min |
| Jul 27, 5:23 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Ulster | 67 min |
| Jul 27, 8:16 PM EDT | Severe Thunderstorm Warning | BGM | Madison, Oneida, Otsego | 59 min |
| Jul 27, 8:25 PM EDT | Severe Thunderstorm Warning | ALY | Herkimer | 65 min |
| Jul 28, 2:52 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 23 min |
| Jul 28, 3:16 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 44 min |
| Jul 28, 3:31 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 59 min |
| Jul 28, 8:45 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Otsego | 30 min |
| Aug 2, 4:37 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 38 min |
| Aug 3, 11:18 AM EDT | Severe Thunderstorm Warning | BGM | Delaware | 57 min |
| Aug 3, 12:56 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer | 64 min |
| Aug 3, 1:02 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer, Washington | 58 min |
| Aug 3, 1:32 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Columbia, Greene, Rensselaer | 58 min |
| Aug 3, 3:12 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Putnam, Rockland, Westchester | 63 min |
| Aug 3, 3:26 PM EDT | Severe Thunderstorm Warning | BGM | Sullivan | 49 min |
| Aug 3, 3:36 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 70 min |
| Aug 3, 3:43 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Putnam | 32 min |
| Aug 3, 4:27 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Greene | 48 min |
| Aug 4, 2:13 PM EDT | Severe Thunderstorm Warning | BTV | Essex | 62 min |
| Aug 4, 3:49 PM EDT | Severe Thunderstorm Warning | ALY | Warren, Washington | 56 min |
| Aug 4, 4:09 PM EDT | Severe Thunderstorm Warning | ALY | Warren | 66 min |
| Aug 4, 4:28 PM EDT | Severe Thunderstorm Warning | ALY | Washington | 62 min |
| Aug 4, 5:17 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Warren | 44 min |
| Aug 4, 6:10 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer, Saratoga, Washington | 50 min |
| Aug 4, 6:35 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Columbia, Greene, Rensselaer | 55 min |
| Aug 6, 3:17 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Wayne | 58 min |
| Aug 6, 4:43 PM EDT | Severe Thunderstorm Warning | BUF | Lewis, Oswego | 41 min |
| Aug 7, 4:35 AM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis | 55 min |
| Aug 7, 1:29 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Schenectady | 61 min |
| Aug 7, 2:15 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer, Saratoga | 60 min |
| Aug 7, 2:45 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer, Schenectady | 60 min |
| Aug 7, 3:00 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Rensselaer | 60 min |
| Aug 7, 4:38 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Greene | 67 min |
| Aug 7, 6:28 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 32 min |
| Aug 7, 6:44 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, New York | 28 min |
| Aug 8, 8:09 AM EDT | Severe Thunderstorm Warning | BUF | Erie | 66 min |
| Aug 8, 9:07 AM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Wyoming | 53 min |
| Aug 8, 6:00 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 45 min |
| Aug 9, 3:04 AM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 41 min |
| Aug 11, 4:56 AM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 49 min |
| Aug 11, 8:23 AM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Westchester | 52 min |
| Aug 14, 3:16 PM EDT | Severe Thunderstorm Warning | ALY | Montgomery, Saratoga, Schenectady | 44 min |
| Aug 14, 5:07 PM EDT | Severe Thunderstorm Warning | ALY | Washington | 38 min |
| Aug 15, 4:29 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 61 min |
| Aug 15, 4:48 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 42 min |
| Aug 15, 4:52 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton, Warren | 39 min |
| Aug 15, 6:57 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, St. Lawrence | 48 min |
| Aug 15, 7:56 PM EDT | Severe Thunderstorm Warning | BTV | Clinton, Essex, Franklin | 64 min |
| Aug 17, 3:49 PM EDT | Severe Thunderstorm Warning | BGM | Broome | 41 min |
| Aug 17, 4:15 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton, Herkimer | 60 min |
| Aug 17, 5:30 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 30 min |
| Aug 17, 5:40 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Greene, Schenectady, Schoharie | 50 min |
| Aug 17, 6:12 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Hamilton, Herkimer, Montgomery | 63 min |
| Aug 17, 6:22 PM EDT | Severe Thunderstorm Warning | ALY | Albany, Columbia, Greene, Montgomery, Rensselaer, Saratoga and 3 more | 53 min |
| Aug 17, 6:36 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 39 min |
| Aug 17, 6:42 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Saratoga, Warren | 48 min |
| Aug 17, 7:03 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 27 min |
| Aug 17, 7:20 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Washington | 55 min |
| Aug 17, 7:29 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 35 min |
| Aug 17, 7:30 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 43 min |
| Aug 17, 7:52 PM EDT | Severe Thunderstorm Warning | ALY | Columbia | 53 min |
| Aug 17, 9:49 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Oswego | 56 min |
| Aug 17, 10:09 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 66 min |
| Aug 17, 10:17 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess | 58 min |
| Aug 18, 1:37 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess, Ulster | 53 min |
| Aug 21, 4:07 PM EDT | Severe Thunderstorm Warning | BUF | Chautauqua | 53 min |
| Aug 21, 6:03 PM EDT | Severe Thunderstorm Warning | BUF | Niagara | 27 min |
| Aug 21, 6:57 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus | 63 min |
| Aug 21, 7:59 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 61 min |
| Aug 27, 11:46 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson | 44 min |
| Aug 29, 4:47 PM EDT | Severe Thunderstorm Warning | BGM | Steuben, Yates | 43 min |
| Aug 29, 7:50 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Schuyler, Steuben, Tioga, Tompkins | 55 min |
| Aug 29, 9:34 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Cortland, Delaware, Tioga, Tompkins | 56 min |
| Aug 29, 10:31 PM EDT | Severe Thunderstorm Warning | BGM | Broome, Chenango, Delaware, Otsego | 48 min |
| Sep 3, 1:48 PM EDT | Severe Thunderstorm Warning | BUF | Lewis | 27 min |
| Sep 3, 2:04 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego | 33 min |
| Sep 3, 2:34 PM EDT | Severe Thunderstorm Warning | BUF | Niagara | 41 min |
| Sep 3, 2:52 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Niagara | 23 min |
| Sep 3, 2:55 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego | 32 min |
| Sep 3, 3:12 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Monroe, Niagara, Orleans | 48 min |
| Sep 3, 4:24 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 27 min |
| Sep 5, 4:55 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Montgomery, Saratoga | 54 min |
| Sep 5, 11:19 PM EDT | Severe Thunderstorm Warning | BUF | Erie | 26 min |
| Sep 5, 11:57 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Wyoming | 48 min |
| Sep 6, 1:46 PM EDT | Severe Thunderstorm Warning | ALY | Columbia | 29 min |
| Sep 6, 2:06 PM EDT | Severe Thunderstorm Warning | ALY | Columbia | 54 min |
| Sep 6, 2:13 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Greene | 35 min |
| Sep 6, 2:18 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess | 42 min |
| Sep 6, 2:36 PM EDT | Severe Thunderstorm Warning | ALY | Columbia | 39 min |
| Sep 6, 2:58 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Dutchess | 62 min |
| Sep 6, 4:43 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 47 min |
| Sep 21, 5:15 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 45 min |
| Sep 21, 5:22 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua | 38 min |
| Sep 21, 5:27 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 48 min |
| Sep 21, 5:54 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Wyoming | 66 min |
| Sep 21, 6:31 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario, Wayne, Wyoming | 59 min |
| Sep 21, 6:51 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 54 min |
| Sep 21, 7:04 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Seneca, Steuben, Yates | 41 min |
| Sep 21, 7:19 PM EDT | Severe Thunderstorm Warning | BGM | Steuben | 41 min |
| Sep 21, 7:40 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Chemung, Cortland, Onondaga, Schuyler, Seneca and 3 more | 35 min |
| Sep 21, 7:54 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Steuben | 51 min |
| Sep 21, 8:10 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Cortland, Schuyler, Seneca, Steuben, Tioga and 1 more | 35 min |
| Sep 26, 8:00 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 45 min |
| Oct 2, 2:33 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess, Ulster | 42 min |
| Oct 2, 6:43 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 47 min |
| Oct 2, 7:36 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 24 min |
| Oct 2, 11:09 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 51 min |
| Oct 6, 3:57 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 63 min |
| Oct 6, 4:54 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 36 min |
| Nov 3, 12:50 AM EDT | Severe Thunderstorm Warning | OKX | Orange, Rockland, Westchester | 25 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Columbia County26
- Dutchess County25
- Tioga County22
- Ulster County21
- Rensselaer County20
- Chenango County18
- Cortland County18
- Saratoga County18
- Albany County18
- Broome County17
- Washington County17
- Westchester County16
- Cayuga County16
- Cattaraugus County15
- Erie County15
- Tompkins County15
- Jefferson County14
- Lewis County14
- Chemung County14
- Montgomery County14
- Steuben County13
- Greene County13
- Oswego County12
- Warren County12
- Chautauqua County11
- St. Lawrence County11
- Herkimer County11
- Schenectady County11
- Schoharie County11
- Sullivan County11
- Orange County11
- Allegany County11
- Franklin County10
- Otsego County10
- Schuyler County9
- Rockland County9
- Wayne County9
- Clinton County9
- Hamilton County9
- Essex County9
22 more counties
- Madison County9
- Onondaga County9
- Fulton County9
- Delaware County9
- Monroe County8
- Genesee County7
- Oneida County7
- Niagara County7
- Putnam County6
- Suffolk County6
- Wyoming County6
- Ontario County5
- Seneca County4
- Kings County4
- New York County4
- Queens County4
- Livingston County4
- Orleans County3
- Bronx County3
- Nassau County3
- Yates County3
- Richmond County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.