Alert archive / New York / Allegany County
Weather alerts in Allegany County, New York, 2021
126 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Allegany County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 126
- Warnings
- 30
- Watches
- 11
- Advisories
- 21
- Busiest month
- July37 alerts
- Busiest day
- July 7, 20219 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Allegany County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 21 | 12 | 43% | 18 | 94% | 37 min |
| Flash flood warnings | 3 | 2 | 33% | 4 | 100% | 61 min |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 2 | 0 | 100% | 1 | 0% | |
| NWS Buffalo, NY: severe thunderstorm warnings | 114 | 76 | 33% | 220 | 93% | 27 min |
| NWS Buffalo, NY: flash flood warnings | 24 | 13 | 46% | 32 | 100% | 85 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, 3:50 AM EST | Winter Weather Advisory | BUF | 7 hr |
| Jan 16, 4:31 PM EST | Special Weather Statement | BUF | 119 min |
| Jan 18, 3:25 AM EST | Winter Weather Advisory | BUF | 39 hr |
| Jan 22, 11:01 AM EST | Special Weather Statement | BUF | 59 min |
| Jan 25, 3:22 AM EST | Winter Weather Advisory | BUF | 51 hr |
| Feb 13, 2:53 PM EST | Winter Storm Watch | BUF | 24 hr |
| Feb 14, 3:12 PM EST | Winter Storm Warning | BUF | 42 hr |
| Feb 15, 8:06 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 21, 1:41 PM EST | Winter Weather Advisory | BUF | 33 hr |
| Feb 22, 7:14 AM EST | Special Weather Statement | BUF | 61 min |
| Feb 28, 6:44 PM EST | Wind Advisory | BUF | 30 hr |
| Mar 1, 3:44 PM EST | Special Weather Statement | BUF | 46 min |
| Mar 1, 4:32 PM EST | Special Weather Statement | BUF | 43 min |
| Mar 15, 2:30 PM EDT | Winter Weather Advisory | BUF | 20 hr |
| Mar 25, 2:12 PM EDT | Wind Advisory | BUF | 29 hr |
| Mar 28, 12:48 PM EDT | Special Weather Statement | BUF | 57 min |
| Mar 30, 2:51 PM EDT | Winter Storm Watch | BUF | 13 hr |
| Mar 31, 3:57 AM EDT | Winter Weather Advisory | BUF | 16 hr |
| Apr 1, 4:43 PM EDT | Special Weather Statement | BUF | 62 min |
| Apr 20, 4:13 AM EDT | Winter Weather Advisory | BUF | 35 hr |
| Apr 28, 1:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Apr 28, 3:56 PM EDT | Special Weather Statement | BUF | 34 min |
| Apr 29, 2:24 PM EDT | Wind Advisory | BUF | 31 hr |
| May 4, 8:58 PM EDT | Special Weather Statement | BUF | 62 min |
| May 10, 1:06 PM EDT | Frost Advisory | BUF | 17 hr |
| May 12, 3:30 AM EDT | Frost Advisory | BUF | 29 hr |
| May 13, 12:57 PM EDT | Frost Advisory | BUF | 19 hr |
| May 26, 12:03 PM EDT | Special Weather Statement | BUF | 27 min |
| May 26, 12:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 30, 5:15 PM EDT | Frost Advisory | BUF | 14 hr |
| Jun 9, 2:33 PM EDT | Special Weather Statement | BUF | 27 min |
| Jun 9, 2:50 PM EDT | Severe Thunderstorm Warning | BUF | 25 min |
| Jun 9, 3:02 PM EDT | Severe Thunderstorm Warning | BUF | 43 min |
| Jun 9, 3:32 PM EDT | Flash Flood Warning | BUF | 3 hr |
| Jun 9, 4:14 PM EDT | Severe Thunderstorm Warning | BUF | 61 min |
| Jun 13, 8:45 PM EDT | Special Weather Statement | BUF | 30 min |
| Jun 13, 9:31 PM EDT | Special Weather Statement | BUF | 29 min |
| Jun 19, 4:36 PM EDT | Special Weather Statement | BUF | 54 min |
| Jun 19, 6:45 PM EDT | Special Weather Statement | BUF | 60 min |
| Jun 21, 5:15 AM EDT | Special Weather Statement | BUF | 75 min |
| Jun 21, 12:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 3:07 PM EDT | Severe Thunderstorm Warning | BUF | 53 min |
| Jun 21, 3:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 28, 3:05 PM EDT | Special Weather Statement | BUF | 40 min |
| Jun 28, 6:03 PM EDT | Special Weather Statement | BUF | 42 min |
| Jun 28, 6:09 PM EDT | Severe Thunderstorm Warning | BUF | 66 min |
| Jun 29, 2:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 29, 7:26 PM EDT | Special Weather Statement | BUF | 34 min |
| Jun 30, 11:04 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 30, 11:47 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 2:47 PM EDT | Special Weather Statement | BUF | 43 min |
| Jul 2, 1:36 PM EDT | Special Weather Statement | BUF | 114 min |
| Jul 2, 3:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 2, 5:02 PM EDT | Special Weather Statement | BUF | 58 min |
| Jul 6, 12:29 PM EDT | Severe Thunderstorm Warning | BUF | 32 min |
| Jul 6, 12:42 PM EDT | Severe Thunderstorm Warning | BUF | 63 min |
| Jul 6, 8:26 PM EDT | Special Weather Statement | BUF | 64 min |
| Jul 7, 4:17 AM EDT | Special Weather Statement | BUF | 43 min |
| Jul 7, 3:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 4:33 PM EDT | Special Weather Statement | BUF | 42 min |
| Jul 7, 6:52 PM EDT | Special Weather Statement | BUF | 38 min |
| Jul 7, 6:53 PM EDT | Special Weather Statement | BUF | 37 min |
| Jul 7, 7:03 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Jul 7, 7:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 7:12 PM EDT | Severe Thunderstorm Warning | BUF | 33 min |
| Jul 7, 8:04 PM EDT | Special Weather Statement | BUF | 56 min |
| Jul 7, 8:39 PM EDT | Flash Flood Warning | BUF | 3 hr |
| Jul 12, 9:02 AM EDT | Flash Flood Watch | BUF | 12 hr |
| Jul 13, 12:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 13, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 13, 4:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 13, 5:57 PM EDT | Severe Thunderstorm Warning | BUF | 63 min |
| Jul 13, 6:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 14, 7:15 AM EDT | Areal Flood Warning | BUF | 3 hr |
| Jul 16, 2:41 PM EDT | Flash Flood Watch | BUF | 32 hr |
| Jul 17, 1:48 PM EDT | Severe Thunderstorm Warning | BUF | 42 min |
| Jul 17, 3:46 PM EDT | Severe Thunderstorm Warning | BUF | 44 min |
| Jul 17, 5:28 PM EDT | Areal Flood Warning | BUF | 5 hr |
| Jul 20, 8:28 PM EDT | Severe Thunderstorm Warning | BUF | 62 min |
| Jul 20, 8:39 PM EDT | Severe Thunderstorm Warning | BUF | 53 min |
| Jul 20, 9:16 PM EDT | Severe Thunderstorm Warning | BUF | 36 min |
| Jul 20, 11:29 PM EDT | Severe Thunderstorm Warning | BUF | 61 min |
| Jul 21, 12:31 AM EDT | Special Weather Statement | BUF | 44 min |
| Jul 27, 10:33 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 27, 11:12 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 27, 1:48 PM EDT | Special Weather Statement | BUF | 27 min |
| Jul 27, 2:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 27, 2:02 PM EDT | Special Weather Statement | BUF | 43 min |
| Aug 1, 10:47 AM EDT | Special Weather Statement | BUF | 43 min |
| Aug 1, 12:18 PM EDT | Special Weather Statement | BUF | 42 min |
| Aug 1, 12:42 PM EDT | Severe Thunderstorm Warning | BUF | 48 min |
| Aug 1, 1:38 PM EDT | Special Weather Statement | BUF | 82 min |
| Aug 8, 7:30 PM EDT | Heat Advisory | BUF | 3 days |
| Aug 11, 7:16 AM EDT | Severe Thunderstorm Warning | BUF | 59 min |
| Aug 13, 10:51 PM EDT | Severe Thunderstorm Warning | BUF | 39 min |
| Aug 17, 2:59 PM EDT | Flash Flood Watch | BUF | 41 hr |
| Aug 19, 7:22 AM EDT | River Flood Warning | BUF | 7 hr |
| Aug 19, 7:48 AM EDT | Areal Flood Warning | BUF | 9 hr |
| Aug 25, 7:36 PM EDT | Flash Flood Warning | BUF | 2 hr |
| Aug 25, 8:04 PM EDT | Special Weather Statement | BUF | 41 min |
| Aug 27, 2:27 PM EDT | Special Weather Statement | BUF | 48 min |
| Aug 27, 2:58 PM EDT | Special Weather Statement | BUF | 92 min |
| Aug 29, 1:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 12, 10:25 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 12, 11:49 PM EDT | Severe Thunderstorm Warning | BUF | 86 min |
| Sep 13, 12:26 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Sep 13, 4:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 10:45 PM EDT | Special Weather Statement | BUF | 45 min |
| Sep 13, 11:01 PM EDT | Severe Thunderstorm Warning | BUF | 44 min |
| Sep 15, 12:41 PM EDT | Special Weather Statement | BUF | 34 min |
| Sep 15, 1:30 PM EDT | Special Weather Statement | BUF | 30 min |
| Sep 28, 6:33 AM EDT | Special Weather Statement | BUF | 42 min |
| Oct 4, 6:37 PM EDT | Special Weather Statement | BUF | 53 min |
| Nov 13, 4:16 PM EST | Special Weather Statement | BUF | 89 min |
| Nov 22, 2:25 AM EST | Special Weather Statement | BUF | 95 min |
| Nov 27, 2:26 PM EST | Winter Weather Advisory | BUF | 31 hr |
| Nov 28, 6:02 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 28, 6:06 PM EST | Special Weather Statement | BUF | 84 min |
| Dec 5, 3:33 AM EST | Wind Advisory | BUF | 45 hr |
| Dec 6, 7:29 PM EST | Special Weather Statement | BUF | 91 min |
| Dec 10, 3:32 AM EST | High Wind Warning | BUF | 45 hr |
| Dec 10, 12:21 PM EST | Wind Advisory | BUF | 15 hr |
| Dec 17, 1:53 PM EST | Winter Weather Advisory | BUF | 32 hr |
| Dec 18, 10:52 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 27, 3:49 AM EST | Winter Weather Advisory | BUF | 27 hr |
| Dec 28, 12:50 PM EST | Winter Weather Advisory | BUF | 14 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 | 21 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 46 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 3 |
| River Flood Warning | 1 |
| Flash Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 11 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.