Alert archive / New York / Orleans County
Weather alerts in Orleans County, New York, 2020
101 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Orleans County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 101
- Warnings
- 25
- Watches
- 13
- Advisories
- 28
- Busiest month
- July13 alerts
- Busiest day
- March 29, 20205 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Orleans County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 10 | 9% | 7 | 86% | 24 min |
| Flash flood warnings | 1 | 1 | 0% | 5 | 100% | 127 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Buffalo, NY: tornado warnings | 6 | 1 | 83% | 2 | 50% | 3 min |
| NWS Buffalo, NY: severe thunderstorm warnings | 109 | 74 | 32% | 244 | 84% | 28 min |
| NWS Buffalo, NY: flash flood warnings | 17 | 10 | 41% | 31 | 94% | 68 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 5, 9:49 PM EST | Special Weather Statement | BUF | 86 min |
| Jan 6, 8:13 PM EST | Special Weather Statement | BUF | 47 min |
| Jan 8, 8:06 AM EST | Snow Squall Warning | BUF | 54 min |
| Jan 8, 1:18 PM EST | Special Weather Statement | BUF | 57 min |
| Jan 9, 2:22 PM EST | Flood Watch | BUF | 70 hr |
| Jan 10, 1:40 PM EST | High Wind Watch | BUF | 16 hr |
| Jan 11, 5:45 AM EST | High Wind Warning | BUF | 29 hr |
| Jan 13, 3:51 AM EST | Winter Weather Advisory | BUF | 13 hr |
| Jan 16, 9:34 AM EST | Special Weather Statement | BUF | 86 min |
| Jan 17, 1:38 PM EST | Winter Weather Advisory | BUF | 36 hr |
| Jan 19, 8:02 AM EST | Winter Weather Advisory | BUF | 14 hr |
| Feb 5, 4:17 AM EST | Winter Storm Watch | BUF | 35 hr |
| Feb 5, 4:17 AM EST | Winter Weather Advisory | BUF | 3 days |
| Feb 6, 3:04 PM EST | Winter Storm Warning | BUF | 31 hr |
| Feb 6, 8:08 PM EST | Special Weather Statement | BUF | 112 min |
| Feb 11, 3:01 PM EST | Winter Weather Advisory | BUF | 43 hr |
| Feb 17, 3:35 AM EST | Winter Weather Advisory | BUF | 32 hr |
| Feb 20, 7:21 AM EST | Special Weather Statement | BUF | 84 min |
| Feb 25, 4:21 AM EST | Winter Storm Watch | BUF | 24 hr |
| Feb 26, 4:27 AM EST | Winter Storm Warning | BUF | 33 hr |
| Feb 26, 12:58 PM EST | Winter Weather Advisory | BUF | 32 hr |
| Mar 2, 11:57 PM EST | Dense Fog Advisory | BUF | 10 hr |
| Mar 3, 3:23 PM EST | Special Weather Statement | BUF | 52 min |
| Mar 3, 4:19 PM EST | Special Weather Statement | BUF | 56 min |
| Mar 9, 2:27 PM EDT | Wind Advisory | BUF | 3 hr |
| Mar 12, 2:11 PM EDT | Wind Advisory | BUF | 29 hr |
| Mar 18, 11:58 AM EDT | High Wind Watch | BUF | 38 hr |
| Mar 20, 1:59 AM EDT | High Wind Warning | BUF | 15 hr |
| Mar 29, 9:13 AM EDT | Wind Advisory | BUF | 13 hr |
| Mar 29, 10:58 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 29, 12:05 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 29, 2:03 PM EDT | Severe Thunderstorm Warning | BUF | 57 min |
| Mar 29, 2:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 9, 2:01 AM EDT | Wind Advisory | BUF | 38 hr |
| Apr 10, 4:32 PM EDT | High Wind Watch | BUF | 12 hr |
| Apr 11, 4:57 AM EDT | High Wind Warning | BUF | 64 hr |
| May 3, 1:32 PM EDT | Freeze Watch | BUF | 24 hr |
| May 4, 1:38 PM EDT | Freeze Warning | BUF | 19 hr |
| May 6, 4:17 AM EDT | Frost Advisory | BUF | 28 hr |
| May 7, 1:38 PM EDT | Freeze Warning | BUF | 19 hr |
| May 8, 1:32 PM EDT | Freeze Warning | BUF | 21 hr |
| May 9, 1:41 PM EDT | Freeze Warning | BUF | 18 hr |
| May 10, 1:48 PM EDT | Freeze Watch | BUF | 14 hr |
| May 11, 3:18 AM EDT | Freeze Warning | BUF | 30 hr |
| May 12, 10:03 AM EDT | Freeze Warning | BUF | 23 hr |
| May 13, 10:48 AM EDT | Frost Advisory | BUF | 20 hr |
| May 29, 1:43 PM EDT | Severe Thunderstorm Warning | BUF | 47 min |
| May 30, 4:06 AM EDT | Beach Hazards Statement | BUF | 21 hr |
| Jun 2, 9:05 PM EDT | Special Weather Statement | BUF | 55 min |
| Jun 2, 9:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 2, 11:06 PM EDT | Severe Thunderstorm Warning | BUF | 54 min |
| Jun 3, 5:12 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 2:01 PM EDT | Heat Advisory | BUF | 29 hr |
| Jun 10, 10:49 PM EDT | Severe Thunderstorm Warning | BUF | 56 min |
| Jun 10, 11:26 PM EDT | Severe Thunderstorm Warning | BUF | 64 min |
| Jun 22, 2:07 PM EDT | Severe Thunderstorm Warning | BUF | 38 min |
| Jun 23, 4:38 PM EDT | Beach Hazards Statement | BUF | 30 hr |
| Jun 23, 5:03 PM EDT | Special Weather Statement | BUF | 57 min |
| Jun 23, 5:20 PM EDT | Severe Thunderstorm Warning | BUF | 42 min |
| Jul 6, 4:01 AM EDT | Heat Advisory | BUF | 5 days |
| Jul 16, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 18, 1:46 PM EDT | Heat Advisory | BUF | 26 hr |
| Jul 19, 12:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 19, 12:53 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 1:16 PM EDT | Heat Advisory | BUF | 30 hr |
| Jul 27, 11:46 AM EDT | Special Weather Statement | BUF | 44 min |
| Jul 27, 2:15 PM EDT | Special Weather Statement | BUF | 45 min |
| Jul 27, 3:01 PM EDT | Special Weather Statement | BUF | 59 min |
| Jul 27, 3:18 PM EDT | Flash Flood Warning | BUF | 4 hr |
| Jul 29, 1:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 29, 5:42 PM EDT | Severe Thunderstorm Warning | BUF | 48 min |
| Jul 29, 6:41 PM EDT | Severe Thunderstorm Warning | BUF | 34 min |
| Aug 2, 4:17 AM EDT | Beach Hazards Statement | BUF | 31 hr |
| Aug 3, 5:58 PM EDT | Special Weather Statement | BUF | 32 min |
| Aug 4, 8:34 PM EDT | Special Weather Statement | BUF | 56 min |
| Aug 16, 7:25 PM EDT | Special Weather Statement | BUF | 35 min |
| Aug 24, 1:42 PM EDT | Special Weather Statement | BUF | 63 min |
| Aug 25, 12:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Aug 25, 2:27 AM EDT | Severe Thunderstorm Warning | BUF | 63 min |
| Aug 28, 10:06 PM EDT | Beach Hazards Statement | BUF | 40 hr |
| Sep 3, 10:43 PM EDT | Special Weather Statement | BUF | 62 min |
| Sep 10, 3:52 AM EDT | Dense Fog Advisory | BUF | 5 hr |
| Sep 13, 3:58 AM EDT | Beach Hazards Statement | BUF | 34 hr |
| Sep 17, 4:19 AM EDT | Beach Hazards Statement | BUF | 33 hr |
| Sep 18, 4:16 AM EDT | Frost Advisory | BUF | 28 hr |
| Sep 30, 6:28 PM EDT | Special Weather Statement | BUF | 32 min |
| Oct 6, 1:59 PM EDT | Wind Advisory | BUF | 29 hr |
| Oct 7, 12:31 PM EDT | Special Weather Statement | BUF | 29 min |
| Oct 10, 4:17 AM EDT | Wind Advisory | BUF | 14 hr |
| Oct 16, 3:57 AM EDT | Frost Advisory | BUF | 29 hr |
| Oct 23, 9:13 PM EDT | Special Weather Statement | BUF | 62 min |
| Nov 2, 2:55 AM EST | Wind Advisory | BUF | 25 hr |
| Nov 13, 3:27 AM EST | High Wind Watch | BUF | 24 hr |
| Nov 14, 3:31 AM EST | High Wind Warning | BUF | 45 hr |
| Nov 15, 1:57 PM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Nov 15, 3:24 PM EST | Severe Thunderstorm Warning | BUF | 66 min |
| Nov 30, 12:32 PM EST | Winter Weather Advisory | BUF | 50 hr |
| Dec 12, 3:34 AM EST | Wind Advisory | BUF | 27 hr |
| Dec 24, 3:52 AM EST | Winter Weather Advisory | BUF | 30 hr |
| Dec 27, 3:44 AM EST | Wind Advisory | BUF | 35 hr |
| Dec 29, 5:14 AM EST | Special Weather Statement | BUF | 76 min |
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 | 11 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 7 |
| Special Weather Statement | 22 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 1 |
| Winter | |
| Snow Squall Warning | 1 |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 9 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 2 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 4 |
| High Wind Watch | 4 |
| Wind Advisory | 9 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Coast and beach | |
| Beach Hazards Statement | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.