Alert archive / New York / Jefferson County
Weather alerts in Jefferson County, New York, 2015
108 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 108
- Warnings
- 25
- Watches
- 20
- Advisories
- 33
- Busiest month
- January30 alerts
- Busiest day
- January 1, 20159 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Jefferson County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 6 | 3 | 50% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 3 | 1 | 67% | 2 | 50% | 4 min |
| NWS Buffalo, NY: severe thunderstorm warnings | 65 | 43 | 34% | 189 | 82% | 21 min |
| NWS Buffalo, NY: flash flood warnings | 31 | 19 | 39% | 83 | 87% | 70 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 |
|---|---|---|---|
| Dec 31, 9:03 PM EST | Special Weather Statement | BUF | 87 min |
| Dec 31, 10:18 PM EST | Special Weather Statement | BUF | 102 min |
| Jan 1, 5:22 AM EST | Special Weather Statement | BUF | 83 min |
| Jan 1, 6:55 AM EST | Special Weather Statement | BUF | 65 min |
| Jan 1, 8:15 AM EST | Special Weather Statement | BUF | 90 min |
| Jan 1, 9:37 AM EST | Special Weather Statement | BUF | 83 min |
| Jan 1, 12:27 PM EST | Special Weather Statement | BUF | 63 min |
| Jan 1, 1:54 PM EST | Special Weather Statement | BUF | 81 min |
| Jan 1, 6:35 PM EST | Special Weather Statement | BUF | 55 min |
| Jan 1, 8:51 PM EST | Special Weather Statement | BUF | 54 min |
| Jan 2, 3:20 PM EST | Winter Weather Advisory | BUF | 32 hr |
| Jan 3, 3:13 PM EST | Wind Advisory | BUF | 31 hr |
| Jan 3, 3:48 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 5, 4:02 AM EST | Lake Effect Snow Watch | BUF | 24 hr |
| Jan 5, 3:52 PM EST | Lake Effect Snow Warning | BUF | 42 hr |
| Jan 5, 9:44 PM EST | Wind Chill Watch | BUF | 7 hr |
| Jan 6, 4:16 AM EST | Wind Chill Advisory | BUF | 54 hr |
| Jan 6, 12:17 PM EST | Lake Effect Snow Advisory | BUF | 54 hr |
| Jan 6, 7:06 PM EST | Wind Chill Warning | BUF | 39 hr |
| Jan 6, 8:23 PM EST | Special Weather Statement | BUF | 52 min |
| Jan 7, 1:21 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 7, 3:47 PM EST | Lake Effect Snow Watch | BUF | 12 hr |
| Jan 8, 4:02 AM EST | Lake Effect Snow Warning | BUF | 72 hr |
| Jan 9, 9:15 AM EST | Special Weather Statement | BUF | 90 min |
| Jan 9, 6:08 PM EST | Special Weather Statement | BUF | 82 min |
| Jan 12, 12:47 PM EST | Wind Chill Advisory | BUF | 21 hr |
| Jan 24, 1:18 PM EST | Winter Weather Advisory | BUF | 9 hr |
| Jan 28, 3:31 PM EST | Winter Weather Advisory | BUF | 40 hr |
| Jan 29, 8:07 PM EST | Wind Chill Advisory | BUF | 37 hr |
| Jan 31, 2:48 PM EST | Winter Storm Warning | BUF | 52 hr |
| Feb 1, 3:19 AM EST | Winter Weather Advisory | BUF | 30 hr |
| Feb 2, 2:45 PM EST | Wind Chill Advisory | BUF | 19 hr |
| Feb 3, 3:42 PM EST | Winter Weather Advisory | BUF | 36 hr |
| Feb 5, 3:51 AM EST | Wind Chill Advisory | BUF | 28 hr |
| Feb 6, 3:44 AM EST | Lake Effect Snow Advisory | BUF | 7 hr |
| Feb 6, 10:34 AM EST | Lake Effect Snow Warning | BUF | 11 hr |
| Feb 6, 3:06 PM EST | Winter Storm Watch | BUF | 37 hr |
| Feb 7, 4:08 AM EST | Winter Weather Advisory | BUF | 59 hr |
| Feb 7, 3:00 PM EST | Winter Storm Warning | BUF | 52 hr |
| Feb 8, 10:51 AM EST | Special Weather Statement | BUF | 54 min |
| Feb 11, 4:05 AM EST | Wind Chill Watch | BUF | 24 hr |
| Feb 12, 3:41 AM EST | Wind Chill Warning | BUF | 32 hr |
| Feb 12, 4:03 PM EST | Wind Chill Watch | BUF | 24 hr |
| Feb 13, 3:53 PM EST | Wind Chill Warning | BUF | 66 hr |
| Feb 13, 3:53 PM EST | Winter Weather Advisory | BUF | 38 hr |
| Feb 14, 12:37 PM EST | Lake Effect Snow Warning | BUF | 4 hr |
| Feb 17, 3:00 PM EST | Wind Chill Warning | BUF | 67 hr |
| Feb 20, 9:33 AM EST | Wind Chill Advisory | BUF | 6 hr |
| Feb 21, 3:32 AM EST | Winter Weather Advisory | BUF | 24 hr |
| Feb 21, 3:09 PM EST | Wind Chill Watch | BUF | 23 hr |
| Feb 22, 1:57 PM EST | Wind Chill Warning | BUF | 43 hr |
| Feb 22, 1:57 PM EST | Wind Chill Advisory | BUF | 43 hr |
| Mar 2, 12:48 PM EST | Winter Weather Advisory | BUF | 42 hr |
| Apr 3, 4:09 AM EDT | Dense Fog Advisory | BUF | 5 hr |
| Apr 8, 3:51 PM EDT | Flood Watch | BUF | 37 hr |
| Apr 9, 3:32 PM EDT | High Wind Warning | BUF | 28 hr |
| Apr 13, 4:42 AM EDT | Wind Advisory | BUF | 18 hr |
| Apr 20, 1:25 PM EDT | Wind Advisory | BUF | 6 hr |
| May 5, 6:15 AM EDT | Special Weather Statement | BUF | 2 hr |
| May 13, 3:51 AM EDT | Frost Advisory | BUF | 28 hr |
| May 14, 3:37 PM EDT | Frost Advisory | BUF | 16 hr |
| May 21, 2:12 AM EDT | Freeze Watch | BUF | 26 hr |
| May 22, 4:12 AM EDT | Freeze Warning | BUF | 27 hr |
| May 30, 4:27 PM EDT | Severe Thunderstorm Warning | BUF | 63 min |
| May 30, 5:39 PM EDT | Severe Thunderstorm Warning | BUF | 66 min |
| Jun 10, 7:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 10, 8:48 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Jun 10, 9:02 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 10, 9:44 PM EDT | Severe Thunderstorm Warning | BUF | 61 min |
| Jun 10, 10:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 12, 10:16 AM EDT | Flash Flood Watch | BUF | 8 hr |
| Jun 12, 2:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 14, 4:10 AM EDT | Flash Flood Watch | BUF | 21 hr |
| Jul 19, 1:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 3:18 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 1, 2:56 AM EDT | Severe Thunderstorm Warning | BUF | 64 min |
| Aug 1, 7:52 PM EDT | Special Weather Statement | BUF | 38 min |
| Aug 2, 6:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 18, 7:16 PM EDT | Special Weather Statement | BUF | 29 min |
| Aug 19, 4:00 AM EDT | Flash Flood Watch | BUF | 40 hr |
| Aug 20, 3:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 9, 11:07 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Oct 13, 1:10 PM EDT | Special Weather Statement | BUF | 50 min |
| Oct 26, 4:57 AM EDT | High Wind Watch | BUF | 23 hr |
| Oct 27, 4:14 AM EDT | High Wind Warning | BUF | 40 hr |
| Oct 28, 4:00 PM EDT | Wind Advisory | BUF | 31 hr |
| Nov 6, 12:26 PM EST | Special Weather Statement | BUF | 94 min |
| Nov 10, 3:24 PM EST | High Wind Watch | BUF | 24 hr |
| Nov 11, 3:04 PM EST | High Wind Warning | BUF | 37 hr |
| Nov 12, 4:52 PM EST | Severe Thunderstorm Warning | BUF | 53 min |
| Nov 13, 3:59 AM EST | Wind Advisory | BUF | 12 hr |
| Nov 17, 3:50 PM EST | Wind Advisory | BUF | 42 hr |
| Nov 20, 3:40 PM EST | Lake Effect Snow Watch | BUF | 21 hr |
| Nov 21, 3:45 AM EST | Wind Advisory | BUF | 6 hr |
| Nov 21, 9:25 AM EST | High Wind Warning | BUF | 14 hr |
| Nov 21, 9:25 AM EST | Wind Advisory | BUF | 21 hr |
| Nov 21, 12:51 PM EST | Lake Effect Snow Warning | BUF | 26 hr |
| Dec 1, 9:47 AM EST | Special Weather Statement | BUF | 58 min |
| Dec 14, 3:50 AM EST | Wind Advisory | BUF | 26 hr |
| Dec 17, 3:51 AM EST | Lake Effect Snow Watch | BUF | 9 hr |
| Dec 17, 12:50 PM EST | Lake Effect Snow Warning | BUF | 63 hr |
| Dec 19, 9:22 PM EST | Special Weather Statement | BUF | 83 min |
| Dec 23, 1:00 PM EST | Wind Advisory | BUF | 27 hr |
| Dec 27, 3:46 PM EST | Winter Weather Advisory | BUF | 54 hr |
| Dec 28, 10:25 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 29, 11:37 PM EST | Freezing Rain Advisory | BUF | 12 hr |
| Dec 30, 12:16 PM EST | Lake Effect Snow Watch | BUF | 15 hr |
| Dec 31, 3:41 AM EST | Lake Effect Snow Warning | BUF | 58 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.