Alert archive / New York / Chautauqua County
Weather alerts in Chautauqua County, New York, 2021
176 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Chautauqua County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 176
- Warnings
- 45
- Watches
- 16
- Advisories
- 35
- Busiest month
- July42 alerts
- Busiest day
- June 21, 20217 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Chautauqua County in 2021 had a tornado report inside them.
Chautauqua County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 21 | 13 | 38% | 24 | 92% | 26 min |
| Flash flood warnings | 7 | 4 | 43% | 7 | 100% | 99 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 16, 7:48 PM EST | Special Weather Statement | BUF | 117 min |
| Jan 17, 2:34 AM EST | Winter Weather Advisory | BUF | 11 hr |
| Jan 17, 1:11 PM EST | Lake Effect Snow Warning | BUF | 65 hr |
| Jan 18, 8:57 PM EST | Special Weather Statement | BUF | 48 min |
| Jan 19, 6:13 AM EST | Special Weather Statement | BUF | 92 min |
| Jan 19, 7:45 AM EST | Special Weather Statement | BUF | 90 min |
| Jan 25, 3:22 AM EST | Winter Weather Advisory | BUF | 51 hr |
| Jan 28, 3:32 AM EST | Winter Weather Advisory | BUF | 24 hr |
| Feb 4, 1:50 PM EST | Lakeshore Flood Watch | BUF | 14 hr |
| Feb 4, 1:54 PM EST | Wind Advisory | BUF | 25 hr |
| Feb 5, 4:15 AM EST | Lakeshore Flood Advisory | BUF | 4 hr |
| Feb 5, 7:48 AM EST | Lakeshore Flood Warning | BUF | 7 hr |
| Feb 5, 3:00 PM EST | Lakeshore Flood Advisory | BUF | 19 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 16, 5:13 PM EST | Special Weather Statement | BUF | 2 hr |
| Feb 19, 2:32 PM EST | Lake Effect Snow Warning | BUF | 33 hr |
| Feb 19, 2:32 PM EST | Winter Weather Advisory | BUF | 33 hr |
| Feb 21, 1:41 PM EST | Winter Weather Advisory | BUF | 33 hr |
| Feb 24, 3:30 AM EST | Wind Advisory | BUF | 17 hr |
| Mar 1, 3:44 PM EST | Special Weather Statement | BUF | 46 min |
| Mar 11, 9:39 PM EST | Special Weather Statement | BUF | 66 min |
| Mar 15, 2:30 PM EDT | Winter Weather Advisory | BUF | 20 hr |
| Mar 24, 3:36 AM EDT | High Wind Watch | BUF | 35 hr |
| Mar 24, 1:53 PM EDT | Lakeshore Flood Watch | BUF | 24 hr |
| Mar 25, 2:08 PM EDT | Lakeshore Flood Warning | BUF | 26 hr |
| Mar 25, 2:12 PM EDT | High Wind Warning | BUF | 26 hr |
| Apr 1, 3:47 PM EDT | Special Weather Statement | BUF | 58 min |
| Apr 1, 4:43 PM EDT | Special Weather Statement | BUF | 62 min |
| Apr 13, 4:15 AM EDT | Dense Fog Advisory | BUF | 6 hr |
| Apr 20, 4:13 AM EDT | Winter Weather Advisory | BUF | 35 hr |
| Apr 28, 1:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 8, 4:11 AM EDT | Frost Advisory | BUF | 27 hr |
| 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, 12:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 26, 1:57 PM EDT | Special Weather Statement | BUF | 33 min |
| May 26, 2:05 PM EDT | Severe Thunderstorm Warning | BUF | 43 min |
| May 28, 3:38 AM EDT | Beach Hazards Statement | BUF | 40 hr |
| May 30, 5:15 PM EDT | Frost Advisory | BUF | 14 hr |
| Jun 8, 11:48 AM EDT | Special Weather Statement | BUF | 117 min |
| Jun 9, 4:35 PM EDT | Special Weather Statement | BUF | 40 min |
| Jun 9, 5:04 PM EDT | Flash Flood Warning | BUF | 3 hr |
| Jun 9, 5:13 PM EDT | Severe Thunderstorm Warning | BUF | 47 min |
| Jun 9, 5:56 PM EDT | Severe Thunderstorm Warning | BUF | 33 min |
| Jun 20, 6:23 PM EDT | Special Weather Statement | BUF | 52 min |
| Jun 20, 6:40 PM EDT | Severe Thunderstorm Warning | BUF | 35 min |
| Jun 20, 11:23 PM EDT | Severe Thunderstorm Warning | BUF | 52 min |
| Jun 21, 12:17 AM EDT | Severe Thunderstorm Warning | BUF | 43 min |
| Jun 21, 3:42 AM EDT | Special Weather Statement | BUF | 63 min |
| Jun 21, 4:12 AM EDT | Special Weather Statement | BUF | 48 min |
| Jun 21, 4:28 AM EDT | Beach Hazards Statement | BUF | 42 hr |
| Jun 21, 11:59 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 21, 12:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 25, 1:31 PM EDT | Wind Advisory | BUF | 15 hr |
| Jun 28, 2:03 PM EDT | Heat Advisory | BUF | 30 hr |
| Jun 29, 2:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 30, 11:47 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 1, 7:45 AM EDT | Special Weather Statement | BUF | 60 min |
| Jul 1, 7:49 AM EDT | Severe Thunderstorm Warning | BUF | 56 min |
| Jul 2, 10:00 AM EDT | Special Weather Statement | BUF | 90 min |
| Jul 2, 11:27 AM EDT | Special Weather Statement | BUF | 2 hr |
| Jul 2, 1:36 PM EDT | Special Weather Statement | BUF | 114 min |
| Jul 6, 10:51 AM EDT | Special Weather Statement | BUF | 39 min |
| Jul 7, 12:51 AM EDT | Special Weather Statement | BUF | 39 min |
| Jul 7, 3:34 AM EDT | Special Weather Statement | BUF | 26 min |
| Jul 7, 3:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 6:10 PM EDT | Special Weather Statement | BUF | 35 min |
| Jul 7, 6:47 PM EDT | Severe Thunderstorm Warning | BUF | 58 min |
| Jul 7, 8:04 PM EDT | Special Weather Statement | BUF | 56 min |
| Jul 8, 1:31 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 9:02 AM EDT | Flash Flood Watch | BUF | 12 hr |
| Jul 12, 6:26 PM EDT | Special Weather Statement | BUF | 64 min |
| 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, 4:41 PM EDT | Severe Thunderstorm Warning | BUF | 64 min |
| Jul 13, 5:38 PM EDT | Severe Thunderstorm Warning | BUF | 52 min |
| Jul 13, 5:57 PM EDT | Severe Thunderstorm Warning | BUF | 63 min |
| Jul 14, 4:07 AM EDT | Flash Flood Warning | BUF | 3 hr |
| Jul 14, 7:15 AM EDT | Areal Flood Warning | BUF | 3 hr |
| Jul 15, 7:37 PM EDT | Special Weather Statement | BUF | 38 min |
| Jul 15, 8:12 PM EDT | Special Weather Statement | BUF | 63 min |
| Jul 15, 8:18 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Jul 16, 2:13 PM EDT | Flash Flood Warning | BUF | 5 hr |
| Jul 16, 2:41 PM EDT | Flash Flood Watch | BUF | 32 hr |
| Jul 16, 2:59 PM EDT | Flash Flood Warning | BUF | 4 hr |
| Jul 16, 4:49 PM EDT | Areal Flood Warning | BUF | 6 hr |
| Jul 16, 7:14 PM EDT | Areal Flood Warning | BUF | 6 hr |
| Jul 17, 4:15 AM EDT | Beach Hazards Statement | BUF | 32 hr |
| Jul 17, 4:42 AM EDT | Special Weather Statement | BUF | 48 min |
| Jul 17, 7:39 AM EDT | Special Weather Statement | BUF | 36 min |
| Jul 17, 7:59 AM EDT | Flash Flood Warning | BUF | 3 hr |
| Jul 17, 9:11 AM EDT | Areal Flood Warning | BUF | 3 hr |
| Jul 17, 4:35 PM EDT | River Flood Warning | BUF | 10 hr |
| Jul 20, 10:19 PM EDT | Severe Thunderstorm Warning | BUF | 56 min |
| Jul 20, 11:29 PM EDT | Severe Thunderstorm Warning | BUF | 61 min |
| Jul 27, 11:12 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 29, 9:59 AM EDT | Special Weather Statement | BUF | 61 min |
| Jul 29, 10:15 AM EDT | Severe Thunderstorm Warning | BUF | 60 min |
| Aug 1, 10:08 AM EDT | Special Weather Statement | BUF | 37 min |
| Aug 1, 10:44 AM EDT | Special Weather Statement | BUF | 46 min |
| Aug 8, 7:30 PM EDT | Heat Advisory | BUF | 3 days |
| Aug 10, 9:13 AM EDT | Special Weather Statement | BUF | 62 min |
| Aug 11, 4:38 AM EDT | Special Weather Statement | BUF | 52 min |
| Aug 11, 5:37 AM EDT | Special Weather Statement | BUF | 53 min |
| Aug 11, 6:09 AM EDT | Severe Thunderstorm Warning | BUF | 51 min |
| Aug 11, 6:52 PM EDT | Special Weather Statement | BUF | 38 min |
| Aug 12, 8:01 AM EDT | Special Weather Statement | BUF | 74 min |
| Aug 13, 8:35 PM EDT | Special Weather Statement | BUF | 40 min |
| Aug 13, 9:14 PM EDT | Special Weather Statement | BUF | 31 min |
| Aug 13, 9:45 PM EDT | Special Weather Statement | BUF | 30 min |
| Aug 21, 5:21 PM EDT | Special Weather Statement | BUF | 54 min |
| Aug 21, 6:00 PM EDT | Flash Flood Warning | BUF | 4 hr |
| Aug 28, 1:11 PM EDT | Special Weather Statement | BUF | 79 min |
| Aug 29, 12:24 PM EDT | Special Weather Statement | BUF | 66 min |
| Aug 29, 1:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 30, 12:59 AM EDT | Special Weather Statement | BUF | 61 min |
| Sep 1, 4:27 AM EDT | Beach Hazards Statement | BUF | 33 hr |
| Sep 5, 4:52 PM EDT | Beach Hazards Statement | BUF | 36 hr |
| Sep 8, 4:10 AM EDT | Beach Hazards Statement | BUF | 19 hr |
| Sep 11, 4:14 PM EDT | Beach Hazards Statement | BUF | 26 hr |
| Sep 12, 10:25 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 12, 11:00 PM EDT | Severe Thunderstorm Warning | BUF | 75 min |
| Sep 12, 11:49 PM EDT | Severe Thunderstorm Warning | BUF | 86 min |
| Sep 13, 4:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 22, 6:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Sep 23, 10:12 PM EDT | Beach Hazards Statement | BUF | 25 hr |
| Sep 25, 4:44 PM EDT | Beach Hazards Statement | BUF | 51 hr |
| Oct 4, 5:05 PM EDT | Special Weather Statement | BUF | 55 min |
| Oct 4, 5:27 PM EDT | Flash Flood Warning | BUF | 2 hr |
| Oct 15, 5:37 PM EDT | Special Weather Statement | BUF | 23 min |
| Oct 15, 5:53 PM EDT | Severe Thunderstorm Warning | BUF | 22 min |
| Oct 15, 6:04 PM EDT | Tornado Warning | BUF | 26 min |
| Oct 15, 6:30 PM EDT | Severe Thunderstorm Warning | BUF | 30 min |
| Oct 21, 2:39 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 21, 4:53 PM EDT | Special Weather Statement | BUF | 37 min |
| Oct 21, 5:09 PM EDT | Severe Thunderstorm Warning | BUF | 33 min |
| Nov 2, 2:18 PM EDT | Winter Weather Advisory | BUF | 21 hr |
| Nov 10, 2:45 PM EST | Wind Advisory | BUF | 40 hr |
| Nov 13, 4:16 PM EST | Special Weather Statement | BUF | 89 min |
| Nov 15, 4:40 PM EST | Special Weather Statement | BUF | 80 min |
| Nov 15, 4:42 PM EST | Winter Weather Advisory | BUF | 14 hr |
| Nov 18, 3:14 AM EST | Winter Weather Advisory | BUF | 30 hr |
| Nov 22, 12:27 AM EST | Special Weather Statement | BUF | 93 min |
| Nov 22, 4:01 AM EST | Winter Weather Advisory | BUF | 27 hr |
| Nov 25, 4:14 AM EST | Winter Storm Watch | BUF | 10 hr |
| Nov 25, 2:41 PM EST | Lake Effect Snow Warning | BUF | 37 hr |
| Nov 27, 2:26 PM EST | Winter Weather Advisory | BUF | 31 hr |
| Nov 28, 10:13 AM EST | Lake Effect Snow Warning | BUF | 18 hr |
| Nov 28, 3:00 PM EST | Special Weather Statement | BUF | 90 min |
| Nov 28, 4:26 PM EST | Special Weather Statement | BUF | 94 min |
| Nov 28, 6:02 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 28, 6:06 PM EST | Special Weather Statement | BUF | 84 min |
| Dec 1, 1:16 PM EST | Wind Advisory | BUF | 29 hr |
| Dec 3, 2:27 PM EST | High Wind Watch | BUF | 46 hr |
| Dec 5, 3:33 AM EST | High Wind Warning | BUF | 45 hr |
| Dec 5, 3:33 AM EST | Wind Advisory | BUF | 45 hr |
| Dec 5, 3:34 AM EST | Lakeshore Flood Advisory | BUF | 42 hr |
| Dec 6, 3:11 AM EST | Winter Weather Advisory | BUF | 66 hr |
| Dec 6, 5:32 PM EST | Special Weather Statement | BUF | 58 min |
| Dec 6, 7:29 PM EST | Special Weather Statement | BUF | 91 min |
| Dec 8, 3:59 PM EST | Special Weather Statement | BUF | 61 min |
| Dec 8, 4:59 PM EST | Special Weather Statement | BUF | 61 min |
| Dec 9, 3:44 AM EST | High Wind Watch | BUF | 24 hr |
| Dec 9, 3:44 AM EST | Lakeshore Flood Watch | BUF | 24 hr |
| Dec 10, 3:27 AM EST | Lakeshore Flood Warning | BUF | 49 hr |
| Dec 10, 3:32 AM EST | High Wind Warning | BUF | 45 hr |
| Dec 15, 3:18 AM EST | Wind Advisory | BUF | 48 hr |
| Dec 17, 1:53 PM EST | Winter Weather Advisory | BUF | 32 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 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 58 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 7 |
| River Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Winter | |
| Lake Effect Snow Warning | 4 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 17 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Frost Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 3 |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Lakeshore Flood Warning | 3 |
| Lakeshore Flood Watch | 3 |
| Lakeshore Flood Advisory | 3 |
| Beach Hazards Statement | 9 |
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.