Alert archive / New York / Jefferson County
Weather alerts in Jefferson County, New York, 2011
96 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 96
- Warnings
- 25
- Watches
- 24
- Advisories
- 29
- Busiest month
- January14 alerts
- Busiest day
- June 8, 20115 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, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 3 | 67% | 9 | 44% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 13 | 2 | 85% | 2 | 100% | 9 min |
| NWS Buffalo, NY: severe thunderstorm warnings | 106 | 55 | 48% | 151 | 81% | 23 min |
| NWS Buffalo, NY: flash flood warnings | 23 | 10 | 57% | 23 | 91% | 63 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 1, 3:17 PM EST | Lake Effect Snow Watch | BUF | 12 hr |
| Jan 2, 3:39 AM EST | Lake Effect Snow Warning | BUF | 36 hr |
| Jan 4, 3:56 AM EST | Lake Effect Snow Advisory | BUF | 26 hr |
| Jan 6, 3:28 PM EST | Winter Weather Advisory | BUF | 28 hr |
| Jan 10, 3:26 PM EST | Winter Weather Advisory | BUF | 49 hr |
| Jan 15, 4:30 AM EST | Lake Effect Snow Warning | BUF | 42 hr |
| Jan 15, 4:30 AM EST | Lake Effect Snow Advisory | BUF | 18 hr |
| Jan 18, 3:23 AM EST | Winter Weather Advisory | BUF | 8 hr |
| Jan 21, 4:21 AM EST | Lake Effect Snow Advisory | BUF | 17 hr |
| Jan 22, 3:26 PM EST | Wind Chill Watch | BUF | 19 hr |
| Jan 22, 3:26 PM EST | Wind Chill Advisory | BUF | 19 hr |
| Jan 23, 10:15 AM EST | Wind Chill Warning | BUF | 23 hr |
| Jan 31, 4:11 AM EST | Winter Storm Watch | BUF | 12 hr |
| Jan 31, 3:50 PM EST | Winter Storm Warning | BUF | 42 hr |
| Feb 2, 2:57 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 2, 4:12 AM EST | Winter Weather Advisory | BUF | 23 hr |
| Feb 5, 4:07 AM EST | Winter Weather Advisory | BUF | 23 hr |
| Feb 5, 8:40 PM EST | Winter Storm Warning | BUF | 6 hr |
| Feb 7, 3:27 PM EST | Lake Effect Snow Watch | BUF | 37 hr |
| Feb 9, 4:05 AM EST | Lake Effect Snow Warning | BUF | 54 hr |
| Feb 12, 8:41 AM EST | Lake Effect Snow Advisory | BUF | 18 hr |
| Feb 18, 4:37 AM EST | Wind Advisory | BUF | 35 hr |
| Feb 23, 3:30 PM EST | Winter Storm Watch | BUF | 22 hr |
| Feb 24, 1:26 PM EST | Winter Storm Warning | BUF | 28 hr |
| Feb 27, 2:58 PM EST | Winter Weather Advisory | BUF | 12 hr |
| Mar 4, 3:45 AM EST | Flood Watch | BUF | 47 hr |
| Mar 5, 11:52 AM EST | Winter Storm Watch | BUF | 10 hr |
| Mar 5, 9:28 PM EST | Winter Storm Warning | BUF | 34 hr |
| Mar 8, 3:23 PM EST | Wind Advisory | BUF | 62 hr |
| Mar 9, 11:41 AM EST | Flood Watch | BUF | 46 hr |
| Apr 3, 3:55 PM EDT | Flood Watch | BUF | 30 hr |
| Apr 11, 1:12 PM EDT | Wind Advisory | BUF | 9 hr |
| Apr 15, 3:47 PM EDT | High Wind Warning | BUF | 30 hr |
| Apr 15, 3:47 PM EDT | Wind Advisory | BUF | 30 hr |
| Apr 17, 3:36 AM EDT | Wind Advisory | BUF | 14 hr |
| Apr 25, 3:54 AM EDT | Flood Watch | BUF | 22 hr |
| Apr 26, 1:49 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 27, 1:58 PM EDT | Flash Flood Watch | BUF | 22 hr |
| Apr 27, 1:58 PM EDT | Wind Advisory | BUF | 26 hr |
| Apr 27, 6:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Apr 28, 4:39 AM EDT | High Wind Warning | BUF | 15 hr |
| Apr 28, 11:35 AM EDT | River Flood Warning | BUF | 29 hr |
| Apr 28, 11:35 AM EDT | River Flood Warning | BUF | 4 days |
| May 2, 3:27 PM EDT | Flood Watch | BUF | 36 hr |
| May 15, 4:15 AM EDT | Flood Watch | BUF | 23 hr |
| May 26, 10:22 AM EDT | Severe Thunderstorm Warning | BUF | 53 min |
| May 26, 8:38 PM EDT | Special Weather Statement | BUF | 37 min |
| May 26, 9:20 PM EDT | Special Weather Statement | BUF | 40 min |
| Jun 8, 3:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 8, 4:42 PM EDT | Severe Thunderstorm Warning | BUF | 63 min |
| Jun 8, 5:00 PM EDT | Severe Thunderstorm Warning | BUF | 46 min |
| Jun 8, 5:39 PM EDT | Severe Thunderstorm Warning | BUF | 26 min |
| Jun 8, 8:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 8, 8:53 PM EDT | Severe Thunderstorm Warning | BUF | 52 min |
| Jun 8, 8:57 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 8, 9:13 PM EDT | Severe Thunderstorm Warning | BUF | 62 min |
| Jun 11, 8:51 PM EDT | Special Weather Statement | BUF | 54 min |
| Jun 24, 11:42 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 28, 1:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 28, 4:45 PM EDT | Areal Flood Advisory | BUF | 3 hr |
| Jul 13, 1:51 PM EDT | Special Weather Statement | BUF | 54 min |
| Jul 18, 3:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 20, 3:35 AM EDT | Excessive Heat Watch | BUF | 12 hr |
| Jul 20, 3:17 PM EDT | Heat Advisory | BUF | 28 hr |
| Jul 26, 11:28 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 26, 3:26 PM EDT | Severe Thunderstorm Warning | BUF | 49 min |
| Aug 14, 5:53 PM EDT | Areal Flood Advisory | BUF | 3 hr |
| Aug 21, 6:48 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Aug 25, 12:22 AM EDT | Severe Thunderstorm Warning | BUF | 53 min |
| Aug 27, 3:26 PM EDT | Wind Advisory | BUF | 29 hr |
| Sep 4, 3:26 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 4, 6:22 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 4, 7:31 AM EDT | Special Weather Statement | BUF | 44 min |
| Sep 4, 11:32 PM EDT | Special Weather Statement | BUF | 88 min |
| Sep 5, 1:28 AM EDT | Special Weather Statement | BUF | 92 min |
| Sep 9, 6:38 AM EDT | Dense Fog Advisory | BUF | 4 hr |
| Sep 13, 2:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 16, 4:36 AM EDT | Frost Advisory | BUF | 26 hr |
| Sep 16, 4:36 AM EDT | Freeze Watch | BUF | 10 hr |
| Sep 29, 12:30 AM EDT | Special Weather Statement | BUF | 90 min |
| Oct 4, 3:48 PM EDT | Freeze Watch | BUF | 12 hr |
| Oct 5, 3:58 AM EDT | Freeze Warning | BUF | 29 hr |
| Oct 13, 3:58 PM EDT | High Wind Watch | BUF | 24 hr |
| Oct 14, 3:51 PM EDT | High Wind Warning | BUF | 35 hr |
| Oct 16, 10:01 PM EDT | Special Weather Statement | BUF | 59 min |
| Nov 15, 3:10 PM EST | Lake Effect Snow Watch | BUF | 37 hr |
| Nov 22, 3:36 PM EST | Winter Weather Advisory | BUF | 7 hr |
| Nov 22, 10:49 PM EST | Winter Storm Warning | BUF | 11 hr |
| Dec 6, 3:24 PM EST | Winter Weather Advisory | BUF | 18 hr |
| Dec 7, 3:30 PM EST | Lake Effect Snow Watch | BUF | 21 hr |
| Dec 8, 12:14 PM EST | Lake Effect Snow Warning | BUF | 34 hr |
| Dec 8, 12:14 PM EST | Lake Effect Snow Advisory | BUF | 58 hr |
| Dec 20, 3:31 PM EST | Winter Weather Advisory | BUF | 18 hr |
| Dec 27, 4:28 AM EST | Winter Weather Advisory | BUF | 45 hr |
| Dec 30, 5:45 PM EST | Freezing Rain Advisory | BUF | 18 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 archive20102012
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.