Alert archive / New York / Niagara County
Weather alerts in Niagara County, New York, 2011
90 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Niagara County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 90
- Warnings
- 16
- Watches
- 19
- Advisories
- 35
- Busiest month
- August14 alerts
- Busiest day
- August 1, 20116 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Niagara County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 6 | 14% | 11 | 100% | 26 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 10, 3:26 PM EST | Winter Weather Advisory | BUF | 49 hr |
| Jan 12, 12:29 PM EST | Lake Effect Snow Advisory | BUF | 24 hr |
| Jan 18, 3:23 AM EST | Winter Weather Advisory | BUF | 8 hr |
| Jan 19, 4:30 AM EST | Winter Weather Advisory | BUF | 10 hr |
| Jan 21, 4:21 AM EST | Lake Effect Snow Warning | BUF | 32 hr |
| Jan 21, 4:21 AM EST | Lake Effect Snow Advisory | BUF | 17 hr |
| Jan 22, 8:13 PM EST | Lake Effect Snow Advisory | BUF | 16 hr |
| Jan 23, 10:15 AM EST | Wind Chill Advisory | 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, 4:12 AM EST | Winter Weather Advisory | BUF | 23 hr |
| Feb 5, 4:07 AM EST | Winter Weather Advisory | BUF | 23 hr |
| Feb 13, 3:45 PM EST | Wind Advisory | BUF | 23 hr |
| Feb 18, 4:37 AM EST | Wind Advisory | BUF | 35 hr |
| Feb 20, 4:06 AM EST | Winter Weather Advisory | BUF | 27 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 25, 2:46 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 27, 2:47 PM EST | Flood Watch | BUF | 30 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 Weather Advisory | BUF | 13 hr |
| Mar 9, 11:41 AM EST | Flood Watch | BUF | 46 hr |
| Mar 22, 4:02 PM EDT | Winter Weather Advisory | BUF | 30 hr |
| Mar 23, 3:32 AM EDT | Mesoscale Discussion | SPC | 4 hr |
| Apr 3, 3:55 PM EDT | Flood Watch | BUF | 30 hr |
| Apr 7, 5:04 AM EDT | Dense Fog Advisory | BUF | 4 hr |
| Apr 11, 1:12 PM EDT | Wind Advisory | BUF | 9 hr |
| Apr 15, 3:47 PM EDT | Wind Advisory | BUF | 30 hr |
| Apr 16, 4:36 AM EDT | High Wind Watch | BUF | 11 hr |
| Apr 16, 3:33 PM EDT | Wind Advisory | BUF | 12 hr |
| Apr 17, 3:36 AM EDT | High Wind Warning | BUF | 14 hr |
| Apr 25, 3:54 AM EDT | Flood Watch | BUF | 22 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, 3:10 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 4:39 AM EDT | High Wind Warning | BUF | 15 hr |
| May 14, 11:38 PM EDT | Areal Flood Advisory | BUF | 3 hr |
| May 15, 4:15 AM EDT | Flood Watch | BUF | 23 hr |
| May 25, 9:41 PM EDT | Areal Flood Advisory | BUF | 3 hr |
| May 26, 7:03 AM EDT | Special Weather Statement | BUF | 57 min |
| May 29, 8:52 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 29, 9:24 PM EDT | Special Weather Statement | BUF | 51 min |
| May 29, 9:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 8, 12:22 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 9, 3:29 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 3:56 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 22, 2:14 AM EDT | Special Weather Statement | BUF | 91 min |
| Jun 23, 3:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 23, 4:18 PM EDT | Areal Flood Advisory | BUF | 62 min |
| Jul 6, 4:10 PM EDT | Special Weather Statement | BUF | 35 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 | Excessive Heat Warning | BUF | 28 hr |
| Jul 29, 10:27 AM EDT | Areal Flood Advisory | BUF | 3 hr |
| Aug 1, 3:26 AM EDT | Severe Thunderstorm Warning | BUF | 49 min |
| Aug 1, 3:47 AM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 1, 3:56 AM EDT | Severe Thunderstorm Warning | BUF | 64 min |
| Aug 1, 4:54 AM EDT | Severe Thunderstorm Warning | BUF | 66 min |
| Aug 1, 8:01 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 1, 3:07 PM EDT | Special Weather Statement | BUF | 53 min |
| Aug 7, 12:53 PM EDT | Special Weather Statement | BUF | 52 min |
| Aug 7, 1:50 PM EDT | Areal Flood Advisory | BUF | 109 min |
| Aug 18, 1:35 PM EDT | Areal Flood Advisory | BUF | 3 hr |
| Aug 18, 3:43 PM EDT | Special Weather Statement | BUF | 62 min |
| Aug 18, 3:46 PM EDT | Severe Thunderstorm Warning | BUF | 44 min |
| Aug 24, 9:18 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 24, 9:56 PM EDT | Severe Thunderstorm Warning | BUF | 64 min |
| Aug 25, 3:23 AM EDT | Special Weather Statement | BUF | 52 min |
| Sep 4, 3:26 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 4, 4:09 AM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Sep 4, 4:41 AM EDT | Severe Thunderstorm Warning | BUF | 45 min |
| Sep 11, 5:21 PM EDT | Areal Flood Advisory | BUF | 114 min |
| Sep 13, 2:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 21, 7:34 PM EDT | Special Weather Statement | BUF | 56 min |
| Sep 21, 7:44 PM EDT | Special Weather Statement | BUF | 61 min |
| Sep 30, 8:34 AM EDT | Areal Flood Advisory | BUF | 3 hr |
| Sep 30, 11:33 AM EDT | Areal Flood Advisory | BUF | 117 min |
| Sep 30, 3:35 PM EDT | Wind Advisory | BUF | 27 hr |
| Oct 6, 3:25 PM EDT | Frost Advisory | BUF | 16 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, 3:55 PM EDT | Wind Advisory | BUF | 27 hr |
| Oct 19, 3:49 PM EDT | Wind Advisory | BUF | 12 hr |
| Oct 22, 3:34 PM EDT | Frost Advisory | BUF | 17 hr |
| Oct 27, 3:48 AM EDT | Freeze Warning | BUF | 29 hr |
| Nov 29, 6:10 PM EST | Dense Fog Advisory | BUF | 3 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 27, 4:28 AM EST | Winter Weather Advisory | BUF | 45 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.