Alert archive / New York / Mesoscale Discussions / 2021
Mesoscale Discussions in New York, December 2021
5 mesoscale discussions in December 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in December 2021. Tap one for its archive.
- Mesoscale Discussions
- 5
- Busiest day
- December 18, 20212 mesoscale discussions
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 |
|---|---|---|---|---|
| Dec 11, 7:29 PM EST | Mesoscale Discussion | SPC | Bronx, Kings, New York, Orange, Queens, Richmond and 3 more | 3 hr |
| Dec 18, 10:52 AM EST | Mesoscale Discussion | SPC | Allegany, Broome, Cayuga, Chemung, Chenango, Columbia and 17 more | 3 hr |
| Dec 18, 2:54 PM EST | Mesoscale Discussion | SPC | Albany, Columbia, Delaware, Fulton, Greene, Montgomery and 8 more | 5 hr |
| Dec 25, 5:44 AM EST | Mesoscale Discussion | SPC | Clinton, Essex, Franklin, Rensselaer, Warren, Washington | 5 hr |
| Dec 25, 5:44 PM EST | Mesoscale Discussion | SPC | Essex, Fulton, Hamilton, Herkimer, Jefferson, Lewis and 7 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Sullivan County3
- Washington County3
- Columbia County2
- Delaware County2
- Greene County2
- Otsego County2
- Schoharie County2
- Ulster County2
- Fulton County2
- Montgomery County2
- Rensselaer County2
- Saratoga County2
- Schenectady County2
- Essex County2
- Warren County2
- Bronx County1
- Kings County1
- New York County1
- Orange County1
- Queens County1
- Richmond County1
- Rockland County1
- Westchester County1
- Allegany County1
- Broome County1
- Cayuga County1
- Chemung County1
- Chenango County1
- Cortland County1
- Genesee County1
- Livingston County1
- Ontario County1
- Schuyler County1
- Seneca County1
- Steuben County1
- Tioga County1
- Tompkins County1
- Wyoming County1
- Yates County1
- Albany County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.