Alert archive / Pennsylvania / Erie County
Weather alerts in Erie County, Pennsylvania, 2021
136 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Erie County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 136
- Warnings
- 22
- Watches
- 17
- Advisories
- 39
- Busiest month
- July25 alerts
- Busiest day
- June 21, 20216 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 Erie County in 2021 had a tornado report inside them.
Erie 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 | 10 | 7 | 30% | 8 | 38% | 26 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 15 min |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Cleveland, OH: tornado warnings | 17 | 7 | 59% | 12 | 67% | 16 min |
| NWS Cleveland, OH: severe thunderstorm warnings | 120 | 84 | 30% | 254 | 80% | 21 min |
| NWS Cleveland, OH: flash flood warnings | 25 | 9 | 64% | 24 | 88% | 97 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, 3:42 AM EST | Winter Weather Advisory | CLE | 6 hr |
| Jan 17, 1:00 PM EST | Winter Weather Advisory | CLE | 21 hr |
| Jan 18, 8:47 AM EST | Lake Effect Snow Warning | CLE | 13 hr |
| Jan 19, 4:06 AM EST | Winter Weather Advisory | CLE | 28 hr |
| Jan 19, 9:21 AM EST | Special Weather Statement | CLE | 84 min |
| Jan 19, 2:28 PM EST | Lake Effect Snow Warning | CLE | 17 hr |
| Jan 22, 6:26 AM EST | Special Weather Statement | CLE | 2 hr |
| Jan 25, 3:52 AM EST | Winter Weather Advisory | CLE | 33 hr |
| Jan 28, 4:09 AM EST | Winter Weather Advisory | CLE | 30 hr |
| Feb 13, 4:24 PM EST | Winter Storm Watch | CLE | 12 hr |
| Feb 14, 4:07 AM EST | Winter Storm Warning | CLE | 54 hr |
| Feb 15, 8:06 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 16, 6:18 PM EST | Winter Weather Advisory | CLE | 7 hr |
| Mar 1, 2:26 PM EST | Special Weather Statement | CLE | 94 min |
| Mar 15, 10:16 PM EDT | Winter Weather Advisory | CLE | 8 hr |
| Mar 17, 3:24 PM EDT | Wind Advisory | CLE | 32 hr |
| Mar 24, 3:30 AM EDT | High Wind Watch | CLE | 34 hr |
| Mar 25, 4:08 AM EDT | High Wind Warning | CLE | 32 hr |
| Mar 25, 4:08 AM EDT | Wind Advisory | CLE | 35 hr |
| Apr 20, 3:54 AM EDT | Winter Weather Advisory | CLE | 30 hr |
| Apr 28, 1:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Apr 29, 2:46 PM EDT | Freeze Watch | CLE | 24 hr |
| Apr 30, 2:55 PM EDT | Freeze Warning | CLE | 17 hr |
| May 8, 3:36 AM EDT | Frost Advisory | CLE | 27 hr |
| May 9, 2:06 PM EDT | Special Weather Statement | CLE | 84 min |
| May 9, 3:10 PM EDT | Frost Advisory | CLE | 15 hr |
| May 10, 12:29 PM EDT | Frost Advisory | CLE | 15 hr |
| May 12, 2:15 PM EDT | Frost Advisory | CLE | 17 hr |
| May 26, 12:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 27, 3:52 PM EDT | Beach Hazards Statement | CLE | 60 hr |
| May 28, 2:30 PM EDT | Wind Advisory | CLE | 18 hr |
| Jun 4, 3:55 AM EDT | Dense Fog Advisory | CLE | 5 hr |
| Jun 9, 4:26 PM EDT | Areal Flood Advisory | CLE | 8 min |
| Jun 9, 4:34 PM EDT | Flash Flood Warning | CLE | 3 hr |
| Jun 10, 3:37 AM EDT | Beach Hazards Statement | CLE | 19 hr |
| Jun 15, 3:51 AM EDT | Beach Hazards Statement | CLE | 27 hr |
| Jun 20, 3:52 PM EDT | Beach Hazards Statement | CLE | 38 hr |
| Jun 20, 10:45 PM EDT | Special Weather Statement | CLE | 45 min |
| Jun 20, 11:19 PM EDT | Severe Thunderstorm Warning | CLE | 26 min |
| Jun 21, 3:09 AM EDT | Special Weather Statement | CLE | 66 min |
| Jun 21, 7:40 AM EDT | Special Weather Statement | CLE | 35 min |
| Jun 21, 11:59 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 21, 12:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 2:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 30, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 1, 3:44 AM EDT | Beach Hazards Statement | CLE | 45 hr |
| Jul 6, 10:47 AM EDT | Special Weather Statement | CLE | 43 min |
| Jul 7, 1:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 3:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 7, 6:15 PM EDT | Special Weather Statement | CLE | 60 min |
| Jul 8, 1:31 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 7:13 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| Jul 12, 3:18 AM EDT | Flash Flood Watch | CLE | 18 hr |
| Jul 13, 3:31 PM EDT | Severe Thunderstorm Warning | CLE | 59 min |
| Jul 13, 3:51 PM EDT | Severe Thunderstorm Warning | CLE | 54 min |
| Jul 13, 4:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 13, 4:25 PM EDT | Severe Thunderstorm Warning | CLE | 36 min |
| Jul 15, 7:27 PM EDT | Special Weather Statement | CLE | 33 min |
| Jul 15, 7:37 PM EDT | Severe Thunderstorm Warning | CLE | 38 min |
| Jul 15, 8:03 PM EDT | Special Weather Statement | CLE | 27 min |
| Jul 16, 3:07 AM EDT | Flash Flood Watch | CLE | 36 hr |
| Jul 16, 3:49 PM EDT | Beach Hazards Statement | CLE | 35 hr |
| Jul 17, 6:09 AM EDT | Areal Flood Advisory | CLE | 6 hr |
| Jul 17, 12:16 PM EDT | Areal Flood Advisory | CLE | 6 hr |
| Jul 29, 10:05 AM EDT | Beach Hazards Statement | CLE | 28 hr |
| Jul 29, 10:17 AM EDT | Special Weather Statement | CLE | 28 min |
| Jul 29, 10:21 AM EDT | Severe Thunderstorm Warning | CLE | 39 min |
| Jul 29, 11:11 AM EDT | Areal Flood Advisory | CLE | 3 hr |
| Jul 29, 11:35 AM EDT | Severe Thunderstorm Warning | CLE | 40 min |
| Jul 29, 11:45 AM EDT | Tornado Warning | CLE | 27 min |
| Aug 10, 8:58 AM EDT | Special Weather Statement | CLE | 47 min |
| Aug 11, 4:53 AM EDT | Special Weather Statement | CLE | 22 min |
| Aug 11, 5:29 AM EDT | Special Weather Statement | CLE | 46 min |
| Aug 11, 4:57 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 11, 6:09 PM EDT | Severe Thunderstorm Warning | CLE | 75 min |
| Aug 12, 3:48 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 18, 9:25 AM EDT | Beach Hazards Statement | CLE | 13 hr |
| Aug 20, 1:17 AM EDT | Dense Fog Advisory | CLE | 8 hr |
| Aug 21, 5:26 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| Aug 27, 4:44 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| Aug 29, 1:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 29, 1:11 PM EDT | Areal Flood Advisory | CLE | 5 hr |
| Aug 29, 4:17 PM EDT | Special Weather Statement | CLE | 43 min |
| Aug 31, 3:44 PM EDT | Beach Hazards Statement | CLE | 45 hr |
| Sep 5, 7:10 AM EDT | Beach Hazards Statement | CLE | 5 hr |
| Sep 5, 3:55 PM EDT | Beach Hazards Statement | CLE | 24 hr |
| Sep 7, 3:45 PM EDT | Beach Hazards Statement | CLE | 36 hr |
| Sep 12, 10:25 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 12, 11:23 PM EDT | Severe Thunderstorm Warning | CLE | 37 min |
| Sep 13, 4:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 13, 4:39 PM EDT | Special Weather Statement | CLE | 36 min |
| Sep 13, 5:05 PM EDT | Severe Thunderstorm Warning | CLE | 25 min |
| Sep 15, 12:35 AM EDT | Special Weather Statement | CLE | 70 min |
| Sep 15, 1:50 AM EDT | Special Weather Statement | CLE | 55 min |
| Sep 22, 2:23 PM EDT | Tornado Watch | SPC | 6 hr |
| Sep 22, 4:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 22, 6:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Sep 23, 3:39 PM EDT | Beach Hazards Statement | CLE | 30 hr |
| Sep 25, 11:31 AM EDT | Beach Hazards Statement | CLE | 56 hr |
| Sep 28, 12:04 PM EDT | Beach Hazards Statement | CLE | 3 hr |
| Oct 4, 4:44 PM EDT | Special Weather Statement | CLE | 91 min |
| Oct 5, 5:00 AM EDT | Dense Fog Advisory | CLE | 5 hr |
| Oct 9, 1:56 AM EDT | Areal Flood Advisory | CLE | 8 hr |
| Oct 15, 1:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Oct 21, 2:39 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 29, 2:38 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| Nov 2, 2:34 PM EDT | Winter Weather Advisory | CLE | 18 hr |
| Nov 10, 2:50 PM EST | Wind Advisory | CLE | 34 hr |
| Nov 13, 3:15 PM EST | Winter Weather Advisory | CLE | 12 hr |
| Nov 18, 3:07 AM EST | Winter Storm Watch | CLE | 10 hr |
| Nov 18, 3:07 AM EST | Winter Weather Advisory | CLE | 30 hr |
| Nov 25, 3:41 AM EST | Winter Storm Watch | CLE | 10 hr |
| Nov 25, 1:34 PM EST | Lake Effect Snow Warning | CLE | 38 hr |
| Nov 25, 1:34 PM EST | Winter Weather Advisory | CLE | 38 hr |
| Nov 26, 12:48 PM EST | Special Weather Statement | CLE | 87 min |
| Nov 26, 2:14 PM EST | Special Weather Statement | CLE | 91 min |
| Nov 27, 2:33 PM EST | Winter Storm Watch | CLE | 14 hr |
| Nov 27, 2:33 PM EST | Winter Weather Advisory | CLE | 40 hr |
| Nov 28, 4:10 AM EST | Lake Effect Snow Warning | CLE | 24 hr |
| Nov 28, 1:37 PM EST | Special Weather Statement | CLE | 113 min |
| Nov 28, 5:32 PM EST | Special Weather Statement | CLE | 58 min |
| Nov 28, 6:02 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 28, 6:33 PM EST | Special Weather Statement | CLE | 87 min |
| Dec 4, 3:37 AM EST | High Wind Watch | CLE | 23 hr |
| Dec 5, 2:59 AM EST | High Wind Warning | CLE | 24 hr |
| Dec 5, 2:59 AM EST | Wind Advisory | CLE | 46 hr |
| Dec 6, 7:46 PM EST | Special Weather Statement | CLE | 59 min |
| Dec 6, 8:44 PM EST | Winter Weather Advisory | CLE | 10 hr |
| Dec 7, 12:35 AM EST | Special Weather Statement | CLE | 85 min |
| Dec 7, 2:12 AM EST | Special Weather Statement | CLE | 93 min |
| Dec 9, 3:15 AM EST | High Wind Watch | CLE | 34 hr |
| Dec 10, 12:48 PM EST | High Wind Warning | CLE | 33 hr |
| Dec 10, 12:48 PM EST | Wind Advisory | CLE | 30 hr |
| Dec 11, 5:51 PM EST | Lakeshore Flood Warning | CLE | 7 hr |
| Dec 15, 3:43 AM EST | Wind Advisory | CLE | 37 hr |
| Dec 29, 4:35 AM EST | Dense Fog Advisory | CLE | 5 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 | 10 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 28 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 10 |
| Winter | |
| Lake Effect Snow Warning | 4 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 14 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind and dust | |
| High Wind Warning | 3 |
| High Wind Watch | 3 |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Coast and beach | |
| Lakeshore Flood Warning | 1 |
| Beach Hazards Statement | 15 |
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.