Alert archive / New York / Jefferson County
Weather alerts in Jefferson County, New York, 2023
108 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 108
- Warnings
- 32
- Watches
- 16
- Advisories
- 26
- Busiest month
- July22 alerts
- Busiest day
- August 7, 20238 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 2 tornado warnings covering Jefferson County in 2023 had a tornado report inside them.
Jefferson County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 15 | 10 | 33% | 5 | 80% | 23 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 5 | 3 | 40% | 4 | 75% | 23 min |
| NWS Buffalo, NY: severe thunderstorm warnings | 78 | 54 | 31% | 215 | 96% | 26 min |
| NWS Buffalo, NY: flash flood warnings | 16 | 13 | 19% | 45 | 100% | 83 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 3, 2:24 PM EST | Winter Weather Advisory | BUF | 37 hr |
| Jan 12, 12:17 PM EST | Winter Weather Advisory | BUF | 39 hr |
| Jan 16, 2:59 PM EST | Winter Weather Advisory | BUF | 32 hr |
| Jan 18, 2:50 PM EST | Winter Weather Advisory | BUF | 55 hr |
| Jan 19, 6:21 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 23, 12:54 PM EST | Winter Weather Advisory | BUF | 29 hr |
| Jan 24, 3:30 AM EST | Winter Storm Watch | BUF | 11 hr |
| Jan 24, 2:44 PM EST | Winter Storm Warning | BUF | 51 hr |
| Jan 29, 4:46 PM EST | Winter Weather Advisory | BUF | 4 hr |
| Jan 31, 2:47 PM EST | Wind Chill Watch | BUF | 25 hr |
| Jan 31, 2:47 PM EST | Winter Weather Advisory | BUF | 22 hr |
| Feb 1, 12:44 PM EST | Lake Effect Snow Warning | BUF | 15 hr |
| Feb 1, 1:19 PM EST | Special Weather Statement | BUF | 56 min |
| Feb 1, 3:47 PM EST | Wind Chill Warning | BUF | 69 hr |
| Feb 1, 8:49 PM EST | Special Weather Statement | BUF | 116 min |
| Feb 2, 8:36 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 2, 9:06 PM EST | Snow Squall Warning | BUF | 54 min |
| Feb 2, 9:58 PM EST | Snow Squall Warning | BUF | 32 min |
| Feb 8, 2:26 PM EST | Wind Advisory | BUF | 44 hr |
| Feb 14, 1:53 PM EST | Wind Advisory | BUF | 29 hr |
| Feb 16, 3:48 AM EST | Winter Weather Advisory | BUF | 33 hr |
| Feb 21, 3:13 AM EST | Winter Storm Watch | BUF | 24 hr |
| Feb 21, 2:23 PM EST | Winter Weather Advisory | BUF | 58 hr |
| Feb 22, 3:23 AM EST | Winter Storm Warning | BUF | 30 hr |
| Feb 22, 8:59 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 28, 7:31 AM EST | Special Weather Statement | BUF | 119 min |
| Mar 2, 3:22 AM EST | Winter Storm Watch | BUF | 24 hr |
| Mar 3, 3:31 AM EST | Winter Storm Warning | BUF | 33 hr |
| Mar 13, 4:01 AM EDT | Winter Weather Advisory | BUF | 48 hr |
| Mar 16, 2:25 PM EDT | Winter Storm Watch | BUF | 24 hr |
| Mar 17, 2:04 PM EDT | Lake Effect Snow Warning | BUF | 54 hr |
| Mar 24, 2:02 PM EDT | Wind Advisory | BUF | 45 hr |
| Mar 25, 3:45 AM EDT | Lakeshore Flood Warning | BUF | 31 hr |
| Mar 29, 5:05 PM EDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 31, 1:37 PM EDT | Wind Advisory | BUF | 29 hr |
| Apr 5, 11:09 AM EDT | Severe Thunderstorm Warning | BUF | 66 min |
| Apr 5, 12:11 PM EDT | Severe Thunderstorm Warning | BUF | 46 min |
| May 13, 12:32 PM EDT | Frost Advisory | BUF | 18 hr |
| May 14, 12:54 PM EDT | Frost Advisory | BUF | 18 hr |
| May 15, 1:48 PM EDT | Freeze Watch | BUF | 24 hr |
| May 16, 1:35 PM EDT | Freeze Warning | BUF | 19 hr |
| May 17, 3:53 AM EDT | Freeze Watch | BUF | 7 hr |
| May 17, 10:57 AM EDT | Freeze Warning | BUF | 21 hr |
| May 25, 4:20 AM EDT | Frost Advisory | BUF | 28 hr |
| Jun 26, 1:11 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jun 26, 8:06 PM EDT | Special Weather Statement | BUF | 39 min |
| Jul 1, 1:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 1:48 PM EDT | Heat Advisory | BUF | 30 hr |
| Jul 9, 4:07 PM EDT | Special Weather Statement | BUF | 38 min |
| Jul 9, 4:48 PM EDT | Special Weather Statement | BUF | 42 min |
| Jul 10, 11:16 AM EDT | Flood Watch | BUF | 9 hr |
| Jul 13, 3:56 AM EDT | Beach Hazards Statement | BUF | 19 hr |
| Jul 13, 11:58 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 12:43 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 13, 1:40 PM EDT | Severe Thunderstorm Warning | BUF | 65 min |
| Jul 13, 2:33 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Jul 18, 12:32 AM EDT | Special Weather Statement | BUF | 43 min |
| Jul 18, 12:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 6:19 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 21, 12:03 AM EDT | Special Weather Statement | BUF | 57 min |
| Jul 21, 1:10 PM EDT | Special Weather Statement | BUF | 65 min |
| Jul 21, 2:46 PM EDT | Special Weather Statement | BUF | 59 min |
| Jul 21, 3:49 PM EDT | Special Weather Statement | BUF | 41 min |
| Jul 21, 4:38 PM EDT | Special Weather Statement | BUF | 37 min |
| Jul 24, 11:58 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 1:06 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 24, 2:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 4:55 PM EDT | Severe Thunderstorm Warning | BUF | 65 min |
| Aug 3, 6:57 PM EDT | Special Weather Statement | BUF | 63 min |
| Aug 3, 7:33 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 4, 10:46 AM EDT | Special Weather Statement | BUF | 44 min |
| Aug 4, 5:08 PM EDT | Special Weather Statement | BUF | 37 min |
| Aug 7, 3:59 PM EDT | Severe Thunderstorm Warning | BUF | 46 min |
| Aug 7, 4:07 PM EDT | Beach Hazards Statement | BUF | 30 hr |
| Aug 7, 4:36 PM EDT | Severe Thunderstorm Warning | BUF | 39 min |
| Aug 7, 4:45 PM EDT | Severe Thunderstorm Warning | BUF | 45 min |
| Aug 7, 5:18 PM EDT | Special Weather Statement | BUF | 42 min |
| Aug 7, 6:19 PM EDT | Tornado Warning | BUF | 25 min |
| Aug 7, 6:51 PM EDT | Severe Thunderstorm Warning | BUF | 54 min |
| Aug 7, 6:57 PM EDT | Tornado Warning | BUF | 33 min |
| Aug 12, 12:50 PM EDT | Tornado Watch | SPC | 8 hr |
| Aug 12, 2:07 PM EDT | Severe Thunderstorm Warning | BUF | 53 min |
| Aug 12, 3:43 PM EDT | Special Weather Statement | BUF | 62 min |
| Aug 12, 6:57 PM EDT | Severe Thunderstorm Warning | BUF | 63 min |
| Aug 12, 7:23 PM EDT | Severe Thunderstorm Warning | BUF | 67 min |
| Aug 12, 7:44 PM EDT | Severe Thunderstorm Warning | BUF | 61 min |
| Aug 18, 4:52 AM EDT | Beach Hazards Statement | BUF | 45 hr |
| Aug 30, 4:25 AM EDT | Beach Hazards Statement | BUF | 22 hr |
| Sep 4, 2:04 PM EDT | Heat Advisory | BUF | 29 hr |
| Sep 5, 3:40 PM EDT | Heat Advisory | BUF | 27 hr |
| Sep 6, 11:17 PM EDT | Severe Thunderstorm Warning | BUF | 58 min |
| Sep 7, 7:28 PM EDT | Severe Thunderstorm Warning | BUF | 47 min |
| Oct 8, 3:55 AM EDT | Flood Watch | BUF | 27 hr |
| Oct 8, 1:13 PM EDT | Areal Flood Warning | BUF | 6 hr |
| Nov 8, 3:37 AM EST | Winter Weather Advisory | BUF | 29 hr |
| Nov 20, 2:28 PM EST | Winter Weather Advisory | BUF | 34 hr |
| Nov 25, 2:43 PM EST | Winter Storm Watch | BUF | 13 hr |
| Nov 26, 3:48 AM EST | Lake Effect Snow Warning | BUF | 3 days |
| Nov 28, 2:16 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Nov 28, 3:16 AM EST | Winter Weather Advisory | BUF | 33 hr |
| Nov 29, 8:01 AM EST | Special Weather Statement | BUF | 74 min |
| Nov 29, 12:49 PM EST | Special Weather Statement | BUF | 71 min |
| Dec 9, 2:24 PM EST | Winter Storm Watch | BUF | 13 hr |
| Dec 10, 3:37 AM EST | Winter Weather Advisory | BUF | 36 hr |
| Dec 12, 3:51 AM EST | Winter Weather Advisory | BUF | 38 hr |
| Dec 18, 11:28 PM EST | River Flood Warning | BUF | 15 hr |
| Dec 19, 9:50 AM EST | River Flood Warning | BUF | 57 hr |
| Dec 28, 9:07 AM EST | Dense Fog Advisory | BUF | 22 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 | 15 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 11 |
| Special Weather Statement | 19 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 2 |
| Flood Watch | 2 |
| Winter | |
| Lake Effect Snow Warning | 3 |
| Snow Squall Warning | 2 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 15 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 1 |
| Freeze Watch | 2 |
| Wind Chill Watch | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Lakeshore Flood Warning | 1 |
| Beach Hazards Statement | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.