Alert archive / New York / Severe Thunderstorm Warnings / 2026
Severe Thunderstorm Warnings in New York, May 2026
19 severe thunderstorm warnings in May 2026. 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 May 2026. Tap one for its archive.
- Severe Thunderstorm Warnings
- 19
- Busiest day
- May 13, 20269 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 |
|---|---|---|---|---|
| May 9, 7:09 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Erie, Genesee, Niagara, Orleans, Wyoming | 51 min |
| May 9, 7:52 PM EDT | Severe Thunderstorm Warning | BUF | Genesee, Livingston, Monroe, Ontario, Wayne, Wyoming | 53 min |
| May 13, 1:17 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua | 58 min |
| May 13, 2:11 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Livingston, Wyoming | 64 min |
| May 13, 2:43 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Monroe, Ontario, Wayne | 62 min |
| May 13, 3:19 PM EDT | Severe Thunderstorm Warning | BUF | Monroe, Ontario, Wayne | 56 min |
| May 13, 4:02 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Onondaga, Seneca, Yates | 43 min |
| May 13, 4:04 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Oswego, Wayne | 56 min |
| May 13, 4:40 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Cortland, Onondaga | 65 min |
| May 13, 4:49 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 71 min |
| May 13, 5:11 PM EDT | Severe Thunderstorm Warning | BGM | Chemung, Steuben | 64 min |
| May 19, 7:39 PM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Niagara, Orleans | 66 min |
| May 19, 10:44 PM EDT | Severe Thunderstorm Warning | BUF | Jefferson, Lewis, Oswego | 46 min |
| May 20, 4:32 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 32 min |
| May 20, 5:25 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 50 min |
| May 20, 6:07 PM EDT | Severe Thunderstorm Warning | OKX | Kings, New York, Richmond | 53 min |
| May 20, 6:51 PM EDT | Severe Thunderstorm Warning | OKX | Kings, Nassau, Queens, Richmond | 39 min |
| May 29, 9:25 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Cortland, Madison, Onondaga | 50 min |
| May 29, 9:51 PM EDT | Severe Thunderstorm Warning | BGM | Delaware, Otsego | 39 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Wayne County4
- Allegany County3
- Genesee County3
- Wyoming County3
- Livingston County3
- Monroe County3
- Ontario County3
- Cayuga County3
- Cortland County3
- Onondaga County3
- Oswego County3
- Erie County2
- Niagara County2
- Orleans County2
- Cattaraugus County2
- Jefferson County2
- Lewis County2
- Kings County2
- Richmond County2
- Chautauqua County1
- Seneca County1
- Yates County1
- Chemung County1
- Steuben County1
- Suffolk County1
- Westchester County1
- New York County1
- Nassau County1
- Queens County1
- Chenango County1
- Madison County1
- Delaware County1
- Otsego County1
Nearby
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.