Alert archive / New York / Jefferson County
Weather alerts in Jefferson County, New York, 2025
107 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 107
- Warnings
- 36
- Watches
- 18
- Advisories
- 37
- Busiest month
- December19 alerts
- Busiest day
- May 17, 20255 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Jefferson County in 2025 had a tornado report inside them.
Jefferson County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 14 | 9 | 36% | 32 | 100% | 32 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 5 | 1 | 80% | 2 | 50% | 1 min |
| NWS Buffalo, NY: severe thunderstorm warnings | 84 | 53 | 37% | 232 | 94% | 26 min |
| NWS Buffalo, NY: flash flood warnings | 21 | 14 | 33% | 39 | 95% | 64 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 | Lasted |
|---|---|---|---|
| Jan 11, 2:34 PM EST | Winter Storm Watch | BUF | 13 hr |
| Jan 12, 3:30 AM EST | Lake Effect Snow Warning | BUF | 4 days |
| Jan 18, 3:20 AM EST | Winter Storm Watch | BUF | 24 hr |
| Jan 19, 3:43 AM EST | Lake Effect Snow Warning | BUF | 3 days |
| Jan 23, 2:41 AM EST | Winter Weather Advisory | BUF | 40 hr |
| Jan 23, 1:41 PM EST | Lake Effect Snow Warning | BUF | 34 hr |
| Jan 24, 12:40 PM EST | Winter Storm Watch | BUF | 15 hr |
| Jan 25, 3:05 AM EST | High Wind Watch | BUF | 33 hr |
| Jan 25, 3:48 AM EST | Lake Effect Snow Warning | BUF | 49 hr |
| Jan 26, 12:34 PM EST | High Wind Warning | BUF | 39 hr |
| Jan 26, 12:41 PM EST | Winter Storm Watch | BUF | 16 hr |
| Jan 27, 4:24 AM EST | Winter Storm Warning | BUF | 25 hr |
| Jan 28, 1:23 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 28, 5:00 AM EST | Winter Storm Watch | BUF | 5 hr |
| Jan 28, 9:59 AM EST | Winter Storm Warning | BUF | 39 hr |
| Feb 2, 1:21 PM EST | Winter Weather Advisory | BUF | 15 hr |
| Feb 4, 3:16 PM EST | Winter Weather Advisory | BUF | 54 hr |
| Feb 6, 3:40 AM EST | Wind Advisory | BUF | 30 hr |
| Feb 7, 3:24 PM EST | Winter Weather Advisory | BUF | 39 hr |
| Feb 9, 3:29 AM EST | Winter Weather Advisory | BUF | 48 hr |
| Feb 11, 2:38 PM EST | Winter Weather Advisory | BUF | 63 hr |
| Feb 14, 4:03 AM EST | Winter Storm Watch | BUF | 24 hr |
| Feb 15, 4:03 AM EST | Winter Storm Warning | BUF | 45 hr |
| Feb 16, 3:03 AM EST | Wind Advisory | BUF | 39 hr |
| Feb 16, 3:31 AM EST | Lake Effect Snow Warning | BUF | 3 days |
| Feb 16, 8:28 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 2:48 AM EST | Cold Weather Advisory | BUF | 30 hr |
| Feb 22, 2:50 AM EST | Winter Weather Advisory | BUF | 34 hr |
| Feb 27, 2:00 AM EST | Winter Weather Advisory | BUF | 62 hr |
| Mar 3, 3:06 AM EST | Flood Watch | BUF | 3 days |
| Mar 6, 3:49 AM EST | Wind Advisory | BUF | 24 hr |
| Mar 14, 3:41 AM EDT | Flood Watch | BUF | 4 days |
| Mar 15, 3:42 AM EDT | Wind Advisory | BUF | 38 hr |
| Mar 16, 4:54 PM EDT | Severe Thunderstorm Warning | BUF | 81 min |
| Mar 16, 5:24 PM EDT | Tornado Warning | BUF | 22 min |
| Mar 16, 10:25 PM EDT | Areal Flood Warning | BUF | 12 hr |
| Mar 17, 1:25 PM EDT | River Flood Warning | BUF | 63 hr |
| Mar 19, 3:02 AM EDT | Wind Advisory | BUF | 35 hr |
| Mar 23, 2:34 PM EDT | Winter Weather Advisory | BUF | 18 hr |
| Mar 27, 3:14 PM EDT | Winter Weather Advisory | BUF | 63 hr |
| Mar 29, 9:58 AM EDT | Ice Storm Warning | BUF | 26 hr |
| Apr 2, 3:51 AM EDT | Wind Advisory | BUF | 38 hr |
| Apr 7, 3:00 AM EDT | Winter Weather Advisory | BUF | 39 hr |
| Apr 14, 2:12 PM EDT | Winter Weather Advisory | BUF | 47 hr |
| Apr 29, 3:26 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 6, 10:45 AM EDT | Flood Watch | BUF | 21 hr |
| May 17, 6:58 AM EDT | Severe Thunderstorm Warning | BUF | 62 min |
| May 17, 7:36 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 12:16 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 12:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 17, 1:20 PM EDT | Severe Thunderstorm Warning | BUF | 55 min |
| May 31, 4:01 PM EDT | Beach Hazards Statement | BUF | 28 hr |
| Jun 9, 4:16 PM EDT | Severe Thunderstorm Warning | BUF | 59 min |
| Jun 9, 4:55 PM EDT | Severe Thunderstorm Warning | BUF | 31 min |
| Jun 19, 3:53 AM EDT | Beach Hazards Statement | BUF | 34 hr |
| Jun 21, 2:44 AM EDT | Heat Advisory | BUF | 4 days |
| Jun 22, 12:32 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 22, 1:30 AM EDT | Severe Thunderstorm Warning | BUF | 60 min |
| Jun 22, 2:24 AM EDT | Severe Thunderstorm Warning | BUF | 66 min |
| Jun 22, 3:58 AM EDT | Beach Hazards Statement | BUF | 12 hr |
| Jun 28, 1:32 PM EDT | Severe Thunderstorm Warning | BUF | 43 min |
| Jun 28, 2:09 PM EDT | Severe Thunderstorm Warning | BUF | 66 min |
| Jul 3, 4:36 PM EDT | Severe Thunderstorm Warning | BUF | 54 min |
| Jul 3, 6:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 13, 4:02 PM EDT | Severe Thunderstorm Warning | BUF | 58 min |
| Jul 15, 1:14 PM EDT | Heat Advisory | BUF | 31 hr |
| Jul 17, 3:53 AM EDT | Beach Hazards Statement | BUF | 26 hr |
| Aug 6, 4:32 PM EDT | Severe Thunderstorm Warning | BUF | 17 min |
| Aug 24, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 25, 3:59 AM EDT | Beach Hazards Statement | BUF | 46 hr |
| Aug 28, 3:40 AM EDT | Beach Hazards Statement | BUF | 27 hr |
| Aug 30, 1:00 PM EDT | Beach Hazards Statement | BUF | 14 hr |
| Sep 4, 10:44 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 4, 2:05 PM EDT | Severe Thunderstorm Warning | BUF | 70 min |
| Sep 4, 2:23 PM EDT | Severe Thunderstorm Warning | BUF | 97 min |
| Sep 5, 3:41 AM EDT | Beach Hazards Statement | BUF | 24 hr |
| Sep 19, 12:53 AM EDT | Frost Advisory | BUF | 31 hr |
| Sep 20, 1:31 AM EDT | Frost Advisory | BUF | 30 hr |
| Oct 1, 1:14 AM EDT | Frost Advisory | BUF | 32 hr |
| Oct 8, 1:35 AM EDT | Freeze Warning | BUF | 31 hr |
| Oct 9, 1:25 AM EDT | Freeze Warning | BUF | 32 hr |
| Nov 3, 12:05 AM EST | Wind Advisory | BUF | 22 hr |
| Nov 4, 1:03 PM EST | Wind Advisory | BUF | 35 hr |
| Nov 8, 12:27 PM EST | Winter Weather Advisory | BUF | 3 days |
| Nov 10, 1:36 AM EST | Winter Weather Advisory | BUF | 59 hr |
| Nov 24, 1:38 AM EST | Winter Storm Watch | BUF | 35 hr |
| Nov 25, 12:44 PM EST | Lake Effect Snow Warning | BUF | 4 days |
| Nov 25, 12:54 PM EST | Wind Advisory | BUF | 60 hr |
| Dec 3, 12:36 PM EST | Winter Weather Advisory | BUF | 30 hr |
| Dec 7, 3:54 PM EST | Winter Weather Advisory | BUF | 4 hr |
| Dec 8, 12:57 PM EST | Winter Storm Watch | BUF | 24 hr |
| Dec 9, 1:19 PM EST | Winter Storm Warning | BUF | 45 hr |
| Dec 11, 12:47 PM EST | Winter Storm Watch | BUF | 13 hr |
| Dec 12, 1:30 AM EST | Lake Effect Snow Warning | BUF | 4 days |
| Dec 14, 12:57 AM EST | Winter Storm Watch | BUF | 12 hr |
| Dec 14, 12:58 PM EST | Lake Effect Snow Warning | BUF | 46 hr |
| Dec 17, 12:53 AM EST | High Wind Watch | BUF | 12 hr |
| Dec 17, 12:47 PM EST | High Wind Warning | BUF | 38 hr |
| Dec 17, 12:47 PM EST | Wind Advisory | BUF | 60 hr |
| Dec 18, 12:30 PM EST | Winter Weather Advisory | BUF | 39 hr |
| Dec 22, 12:47 PM EST | Winter Weather Advisory | BUF | 39 hr |
| Dec 25, 12:56 PM EST | Winter Weather Advisory | BUF | 39 hr |
| Dec 27, 1:12 PM EST | Winter Storm Watch | BUF | 13 hr |
| Dec 27, 1:12 PM EST | Winter Weather Advisory | BUF | 57 hr |
| Dec 28, 1:44 AM EST | High Wind Warning | BUF | 41 hr |
| Dec 28, 2:22 AM EST | Winter Storm Warning | BUF | 7 days |
| Dec 28, 12:41 PM EST | Wind Advisory | BUF | 41 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 14 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 8 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 1 |
| Flood Watch | 3 |
| Winter | |
| Ice Storm Warning | 1 |
| Lake Effect Snow Warning | 8 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 11 |
| Winter Weather Advisory | 20 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Cold Weather Advisory | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 2 |
| Wind Advisory | 11 |
| Coast and beach | |
| Beach Hazards Statement | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.