Alert archive / New York / Jefferson County
Weather alerts in Jefferson County, New York, 2024
131 weather alerts in 2024, 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 2024. Tap one for its archive.
- Alerts
- 131
- Warnings
- 45
- Watches
- 19
- Advisories
- 16
- Busiest month
- July31 alerts
- Busiest day
- May 27, 20248 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 5 tornado warnings covering Jefferson County in 2024 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 7 minutes after it went out.
Jefferson County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 2 | 60% | 2 | 100% | 7 min |
| Severe thunderstorm warnings | 22 | 13 | 41% | 22 | 91% | 21 min |
| Flash flood warnings | 2 | 1 | 50% | 2 | 100% | 152 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 25 | 10 | 60% | 15 | 73% | 10 min |
| NWS Buffalo, NY: severe thunderstorm warnings | 125 | 87 | 30% | 320 | 82% | 25 min |
| NWS Buffalo, NY: flash flood warnings | 22 | 17 | 23% | 52 | 100% | 78 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 2, 9:29 PM EST | Winter Weather Advisory | BUF | 31 hr |
| Jan 5, 1:52 PM EST | Winter Weather Advisory | BUF | 50 hr |
| Jan 7, 3:31 AM EST | High Wind Watch | BUF | 10 hr |
| Jan 7, 1:09 PM EST | High Wind Warning | BUF | 61 hr |
| Jan 9, 1:22 PM EST | Winter Weather Advisory | BUF | 7 hr |
| Jan 10, 3:09 AM EST | Lake Effect Snow Warning | BUF | 43 hr |
| Jan 11, 3:42 AM EST | High Wind Watch | BUF | 23 hr |
| Jan 11, 1:56 PM EST | Winter Storm Watch | BUF | 23 hr |
| Jan 12, 3:10 AM EST | High Wind Warning | BUF | 48 hr |
| Jan 12, 1:06 PM EST | Winter Storm Warning | BUF | 72 hr |
| Jan 14, 3:49 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 15, 2:06 AM EST | Winter Storm Watch | BUF | 26 hr |
| Jan 16, 3:51 AM EST | Lake Effect Snow Warning | BUF | 69 hr |
| Jan 17, 5:44 AM EST | Special Weather Statement | BUF | 76 min |
| Jan 17, 6:59 AM EST | Special Weather Statement | BUF | 46 min |
| Jan 17, 8:10 AM EST | Special Weather Statement | BUF | 2 hr |
| Jan 17, 2:22 PM EST | Special Weather Statement | BUF | 83 min |
| Jan 17, 4:53 PM EST | Special Weather Statement | BUF | 82 min |
| Jan 17, 7:07 PM EST | Special Weather Statement | BUF | 83 min |
| Jan 17, 10:35 PM EST | Special Weather Statement | BUF | 85 min |
| Jan 18, 1:22 PM EST | Special Weather Statement | BUF | 113 min |
| Jan 18, 3:46 PM EST | Special Weather Statement | BUF | 89 min |
| Jan 22, 2:20 PM EST | Winter Weather Advisory | BUF | 65 hr |
| Jan 25, 11:24 AM EST | Winter Weather Advisory | BUF | 19 hr |
| Feb 14, 2:59 PM EST | Winter Storm Watch | BUF | 12 hr |
| Feb 15, 3:17 AM EST | Winter Storm Warning | BUF | 34 hr |
| Feb 17, 3:38 AM EST | Lake Effect Snow Warning | BUF | 43 hr |
| Feb 18, 6:01 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 27, 3:14 AM EST | High Wind Watch | BUF | 24 hr |
| Feb 28, 3:32 AM EST | High Wind Warning | BUF | 24 hr |
| Mar 8, 12:53 PM EST | Wind Advisory | BUF | 33 hr |
| Mar 8, 1:57 PM EST | Winter Storm Watch | BUF | 24 hr |
| Mar 9, 3:27 AM EST | Winter Storm Warning | BUF | 53 hr |
| Mar 17, 2:32 PM EDT | Winter Weather Advisory | BUF | 38 hr |
| Mar 19, 2:45 PM EDT | Winter Weather Advisory | BUF | 25 hr |
| Mar 21, 3:35 PM EDT | Winter Storm Watch | BUF | 13 hr |
| Mar 22, 4:46 AM EDT | Winter Storm Warning | BUF | 31 hr |
| Apr 1, 3:03 PM EDT | Winter Storm Watch | BUF | 37 hr |
| Apr 3, 3:44 AM EDT | Wind Advisory | BUF | 15 hr |
| Apr 3, 3:54 AM EDT | Winter Weather Advisory | BUF | 40 hr |
| Apr 11, 4:45 AM EDT | Wind Advisory | BUF | 24 hr |
| May 21, 5:40 PM EDT | Special Weather Statement | BUF | 50 min |
| May 21, 5:53 PM EDT | Severe Thunderstorm Warning | BUF | 52 min |
| May 21, 6:21 PM EDT | Severe Thunderstorm Warning | BUF | 39 min |
| May 22, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 22, 4:51 PM EDT | Severe Thunderstorm Warning | BUF | 54 min |
| May 22, 5:40 PM EDT | Severe Thunderstorm Warning | BUF | 65 min |
| May 22, 6:28 PM EDT | Severe Thunderstorm Warning | BUF | 38 min |
| May 23, 2:50 AM EDT | Severe Thunderstorm Warning | BUF | 40 min |
| May 27, 11:53 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 27, 2:08 PM EDT | Special Weather Statement | BUF | 37 min |
| May 27, 2:44 PM EDT | Severe Thunderstorm Warning | BUF | 25 min |
| May 27, 3:14 PM EDT | Special Weather Statement | BUF | 46 min |
| May 27, 3:40 PM EDT | Beach Hazards Statement | BUF | 30 hr |
| May 27, 4:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| May 27, 5:08 PM EDT | Special Weather Statement | BUF | 67 min |
| Jun 5, 5:53 PM EDT | Special Weather Statement | BUF | 52 min |
| Jun 6, 2:16 PM EDT | Areal Flood Warning | BUF | 104 min |
| Jun 7, 10:32 PM EDT | Beach Hazards Statement | BUF | 67 hr |
| Jun 9, 12:31 PM EDT | Special Weather Statement | BUF | 59 min |
| Jun 13, 11:00 PM EDT | Special Weather Statement | BUF | 45 min |
| Jun 13, 11:18 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Jun 16, 2:55 PM EDT | Heat Advisory | BUF | 4 days |
| Jun 18, 4:21 AM EDT | Special Weather Statement | BUF | 54 min |
| Jun 18, 5:48 AM EDT | Special Weather Statement | BUF | 57 min |
| Jun 20, 2:42 AM EDT | Severe Thunderstorm Warning | BUF | 42 min |
| Jun 20, 5:25 PM EDT | Special Weather Statement | BUF | 65 min |
| Jun 23, 4:06 AM EDT | Beach Hazards Statement | BUF | 40 hr |
| Jun 23, 12:32 PM EDT | Special Weather Statement | BUF | 43 min |
| Jun 30, 4:06 AM EDT | Beach Hazards Statement | BUF | 24 hr |
| Jul 6, 12:37 AM EDT | Special Weather Statement | BUF | 53 min |
| Jul 6, 12:44 AM EDT | Severe Thunderstorm Warning | BUF | 46 min |
| Jul 10, 3:15 AM EDT | Flood Watch | BUF | 19 hr |
| Jul 10, 10:30 AM EDT | Severe Thunderstorm Warning | BUF | 60 min |
| Jul 10, 11:01 AM EDT | Severe Thunderstorm Warning | BUF | 59 min |
| Jul 10, 12:06 PM EDT | Tornado Watch | SPC | 11 hr |
| Jul 10, 1:33 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Jul 10, 1:43 PM EDT | Tornado Warning | BUF | 47 min |
| Jul 10, 2:18 PM EDT | Tornado Warning | BUF | 42 min |
| Jul 10, 4:05 PM EDT | Tornado Warning | BUF | 40 min |
| Jul 15, 12:21 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 16, 10:33 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 16, 11:05 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 16, 1:22 PM EDT | Severe Thunderstorm Warning | BUF | 53 min |
| Jul 16, 1:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 16, 1:59 PM EDT | Tornado Warning | BUF | 31 min |
| Jul 16, 2:12 PM EDT | Severe Thunderstorm Warning | BUF | 78 min |
| Jul 16, 3:27 PM EDT | Severe Thunderstorm Warning | BUF | 37 min |
| Jul 23, 3:36 PM EDT | Special Weather Statement | BUF | 24 min |
| Jul 24, 7:26 AM EDT | Special Weather Statement | BUF | 34 min |
| Jul 24, 8:28 AM EDT | Special Weather Statement | BUF | 32 min |
| Jul 24, 12:23 PM EDT | Severe Thunderstorm Warning | BUF | 52 min |
| Jul 24, 3:28 PM EDT | Severe Thunderstorm Warning | BUF | 62 min |
| Jul 24, 4:30 PM EDT | Severe Thunderstorm Warning | BUF | 60 min |
| Jul 24, 4:48 PM EDT | Beach Hazards Statement | BUF | 29 hr |
| Jul 24, 5:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 24, 5:09 PM EDT | Flash Flood Warning | BUF | 3 hr |
| Jul 30, 3:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 30, 5:13 PM EDT | Special Weather Statement | BUF | 62 min |
| Jul 30, 5:20 PM EDT | Special Weather Statement | BUF | 55 min |
| Jul 30, 5:48 PM EDT | Special Weather Statement | BUF | 57 min |
| Aug 4, 2:33 PM EDT | Special Weather Statement | BUF | 57 min |
| Aug 4, 3:25 PM EDT | Special Weather Statement | BUF | 50 min |
| Aug 8, 3:52 AM EDT | Flood Watch | BUF | 37 hr |
| Aug 9, 1:43 PM EDT | Wind Advisory | BUF | 5 hr |
| Aug 9, 1:52 PM EDT | Areal Flood Warning | BUF | 8 hr |
| Aug 9, 2:51 PM EDT | Flash Flood Warning | BUF | 4 hr |
| Aug 9, 3:00 PM EDT | Severe Thunderstorm Warning | BUF | 60 min |
| Aug 9, 3:50 PM EDT | Severe Thunderstorm Warning | BUF | 85 min |
| Aug 9, 4:56 PM EDT | Beach Hazards Statement | BUF | 60 hr |
| Aug 19, 8:01 AM EDT | Areal Flood Warning | BUF | 5 hr |
| Sep 1, 1:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Sep 7, 5:01 AM EDT | Beach Hazards Statement | BUF | 66 hr |
| Sep 9, 4:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Sep 9, 5:02 PM EDT | Severe Thunderstorm Warning | BUF | 58 min |
| Sep 9, 5:09 PM EDT | Tornado Warning | BUF | 51 min |
| Oct 7, 2:08 AM EDT | Special Weather Statement | BUF | 52 min |
| Oct 8, 5:56 PM EDT | Special Weather Statement | BUF | 94 min |
| Oct 9, 3:31 PM EDT | Special Weather Statement | BUF | 44 min |
| Nov 26, 3:59 AM EST | Winter Storm Watch | BUF | 32 hr |
| Nov 27, 12:21 PM EST | Lake Effect Snow Warning | BUF | 6 days |
| Nov 30, 9:03 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 3, 3:15 AM EST | Winter Storm Watch | BUF | 24 hr |
| Dec 4, 3:32 AM EST | Winter Storm Warning | BUF | 4 days |
| Dec 9, 9:35 AM EST | Winter Weather Advisory | BUF | 15 hr |
| Dec 9, 2:01 PM EST | Winter Storm Watch | BUF | 23 hr |
| Dec 10, 12:31 PM EST | Lake Effect Snow Warning | BUF | 3 days |
| Dec 12, 12:21 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 23, 2:48 AM EST | Winter Weather Advisory | BUF | 31 hr |
| Dec 29, 3:01 AM EST | Wind Advisory | BUF | 40 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 | 22 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 32 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 2 |
| Flood Watch | 2 |
| Winter | |
| Lake Effect Snow Warning | 5 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 9 |
| Winter Weather Advisory | 10 |
| Heat | |
| Heat Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 3 |
| Wind Advisory | 5 |
| Coast and beach | |
| Beach Hazards Statement | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.