Alert archive / Pennsylvania / Erie County
Weather alerts in Erie County, Pennsylvania, 2011
165 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 165
- Warnings
- 55
- Watches
- 30
- Advisories
- 50
- Busiest month
- May33 alerts
- Busiest day
- May 26, 20119 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 5 tornado warnings covering Erie County in 2011 had a tornado report inside them.
Erie County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 1 | 80% | 0 | ||
| Severe thunderstorm warnings | 29 | 15 | 48% | 20 | 95% | 24 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 Cleveland, OH: tornado warnings | 26 | 1 | 96% | 3 | 33% | 2 min |
| NWS Cleveland, OH: severe thunderstorm warnings | 300 | 189 | 37% | 448 | 85% | 24 min |
| NWS Cleveland, OH: flash flood warnings | 41 | 13 | 68% | 27 | 89% | 82 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 1, 4:57 PM EST | Areal Flood Advisory | CLE | 12 hr |
| Jan 6, 3:31 PM EST | Winter Weather Advisory | CLE | 6 hr |
| Jan 6, 9:45 PM EST | Lake Effect Snow Warning | CLE | 13 hr |
| Jan 6, 9:45 PM EST | Lake Effect Snow Advisory | CLE | 7 hr |
| Jan 7, 3:30 AM EST | Lake Effect Snow Watch | CLE | 24 hr |
| Jan 7, 3:18 PM EST | Lake Effect Snow Warning | CLE | 44 hr |
| Jan 10, 2:48 PM EST | Winter Weather Advisory | CLE | 61 hr |
| Jan 17, 3:14 PM EST | Freezing Rain Advisory | CLE | 20 hr |
| Jan 19, 3:56 AM EST | Freezing Rain Advisory | CLE | 8 hr |
| Jan 19, 2:54 PM EST | Winter Weather Advisory | CLE | 54 hr |
| Jan 30, 3:14 PM EST | Winter Storm Watch | CLE | 25 hr |
| Jan 31, 2:54 PM EST | Winter Storm Warning | CLE | 42 hr |
| Feb 1, 12:12 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 2, 8:54 AM EST | Winter Weather Advisory | CLE | 6 hr |
| Feb 5, 3:54 AM EST | Winter Weather Advisory | CLE | 18 hr |
| Feb 10, 3:24 PM EST | Wind Chill Advisory | CLE | 17 hr |
| Feb 13, 11:05 PM EST | Wind Advisory | CLE | 16 hr |
| Feb 18, 9:24 PM EST | Wind Advisory | CLE | 13 hr |
| Feb 20, 3:52 AM EST | Winter Weather Advisory | CLE | 47 hr |
| Feb 20, 2:37 PM EST | Winter Storm Warning | CLE | 20 hr |
| Feb 20, 7:46 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 20, 11:50 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 23, 3:38 PM EST | Winter Storm Watch | CLE | 23 hr |
| Feb 23, 11:19 PM EST | Winter Weather Advisory | CLE | 11 hr |
| Feb 24, 3:54 AM EST | Winter Storm Warning | CLE | 36 hr |
| Feb 25, 2:46 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 27, 3:42 AM EST | Flood Watch | CLE | 35 hr |
| Feb 28, 1:54 AM EST | Areal Flood Warning | CLE | 12 hr |
| Feb 28, 10:18 AM EST | Areal Flood Warning | CLE | 50 hr |
| Mar 3, 11:43 AM EST | Flood Watch | CLE | 50 hr |
| Mar 4, 6:04 AM EST | Freezing Rain Advisory | CLE | 4 hr |
| Mar 5, 9:15 AM EST | Areal Flood Warning | CLE | 24 hr |
| Mar 5, 1:48 PM EST | Flood Watch | CLE | 7 hr |
| Mar 5, 3:22 PM EST | Winter Weather Advisory | CLE | 21 hr |
| Mar 9, 10:06 AM EST | Wind Advisory | CLE | 12 hr |
| Mar 9, 3:19 PM EST | Winter Storm Watch | CLE | 24 hr |
| Mar 10, 9:00 AM EST | Areal Flood Warning | CLE | 10 hr |
| Mar 10, 2:51 PM EST | Winter Storm Warning | CLE | 31 hr |
| Mar 10, 6:48 PM EST | Areal Flood Warning | CLE | 41 hr |
| Mar 23, 2:50 PM EDT | Freezing Rain Advisory | CLE | 13 hr |
| Mar 31, 8:31 AM EDT | Dense Fog Advisory | CLE | 5 hr |
| Apr 3, 3:45 PM EDT | Wind Advisory | CLE | 24 hr |
| Apr 4, 9:18 AM EDT | Severe Thunderstorm Warning | CLE | 42 min |
| Apr 15, 3:34 PM EDT | High Wind Warning | CLE | 22 hr |
| Apr 15, 3:34 PM EDT | Wind Advisory | CLE | 22 hr |
| Apr 16, 3:49 PM EDT | Wind Advisory | CLE | 28 hr |
| Apr 17, 3:34 AM EDT | High Wind Warning | CLE | 16 hr |
| Apr 20, 12:18 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 20, 11:31 AM EDT | Wind Advisory | CLE | 4 hr |
| Apr 25, 12:48 PM EDT | Flood Watch | CLE | 63 hr |
| Apr 26, 4:53 AM EDT | Dense Fog Advisory | CLE | 4 hr |
| Apr 27, 1:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 27, 4:09 PM EDT | Severe Thunderstorm Warning | CLE | 66 min |
| Apr 27, 9:32 PM EDT | Wind Advisory | CLE | 6 hr |
| Apr 28, 3:55 AM EDT | High Wind Warning | CLE | 6 hr |
| Apr 28, 9:55 AM EDT | Wind Advisory | CLE | 6 hr |
| May 4, 3:45 AM EDT | Frost Advisory | CLE | 29 hr |
| May 12, 11:04 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 13, 3:18 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| May 13, 3:22 PM EDT | Severe Thunderstorm Warning | CLE | 38 min |
| May 13, 3:50 PM EDT | Areal Flood Warning | CLE | 4 hr |
| May 13, 3:53 PM EDT | Severe Thunderstorm Warning | CLE | 67 min |
| May 13, 7:55 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| May 14, 4:19 AM EDT | Flash Flood Watch | CLE | 19 hr |
| May 15, 10:34 AM EDT | Areal Flood Warning | CLE | 9 hr |
| May 18, 4:45 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| May 23, 8:25 AM EDT | Mesoscale Discussion | SPC | 65 min |
| May 23, 7:49 PM EDT | Severe Thunderstorm Warning | CLE | 56 min |
| May 23, 8:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 23, 8:31 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 23, 8:44 PM EDT | Severe Thunderstorm Warning | CLE | 46 min |
| May 23, 10:22 PM EDT | Areal Flood Advisory | CLE | 3 hr |
| May 25, 1:55 PM EDT | Tornado Watch | SPC | 8 hr |
| May 25, 7:50 PM EDT | Severe Thunderstorm Warning | CLE | 55 min |
| May 25, 8:17 PM EDT | Areal Flood Warning | CLE | 10 hr |
| May 25, 8:34 PM EDT | Tornado Warning | CLE | 56 min |
| May 25, 8:37 PM EDT | Severe Thunderstorm Warning | CLE | 53 min |
| May 25, 9:25 PM EDT | Severe Thunderstorm Warning | CLE | 35 min |
| May 26, 11:02 AM EDT | Flood Watch | CLE | 11 hr |
| May 26, 4:39 PM EDT | Severe Thunderstorm Warning | CLE | 66 min |
| May 26, 4:53 PM EDT | Tornado Warning | CLE | 52 min |
| May 26, 4:54 PM EDT | Areal Flood Warning | CLE | 4 hr |
| May 26, 6:06 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 26, 8:11 PM EDT | Severe Thunderstorm Warning | CLE | 49 min |
| May 27, 3:05 PM EDT | Areal Flood Advisory | CLE | 4 hr |
| May 29, 6:05 PM EDT | Mesoscale Discussion | SPC | 25 min |
| May 29, 6:17 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 29, 7:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| May 29, 7:56 PM EDT | Severe Thunderstorm Warning | CLE | 64 min |
| Jun 4, 12:02 PM EDT | Severe Thunderstorm Warning | CLE | 58 min |
| Jun 4, 12:24 PM EDT | Tornado Warning | CLE | 38 min |
| Jun 7, 5:29 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 7, 6:47 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 7, 6:56 AM EDT | Severe Thunderstorm Warning | CLE | 64 min |
| Jun 7, 8:22 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 8, 1:51 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 9, 3:29 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 3:56 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 9, 8:13 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 3:59 PM EDT | Severe Thunderstorm Warning | CLE | 61 min |
| Jun 23, 12:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 2, 9:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 11, 3:27 PM EDT | Severe Thunderstorm Warning | CLE | 63 min |
| Jul 18, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 3:49 AM EDT | Excessive Heat Watch | CLE | 10 hr |
| Jul 20, 2:15 PM EDT | Excessive Heat Warning | CLE | 31 hr |
| Jul 20, 2:15 PM EDT | Heat Advisory | CLE | 20 hr |
| Jul 23, 10:12 PM EDT | Severe Thunderstorm Warning | CLE | 35 min |
| Jul 25, 11:37 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 25, 11:43 AM EDT | Tornado Warning | CLE | 32 min |
| Jul 29, 3:31 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 29, 3:56 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 1, 3:47 AM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 1, 8:01 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 7, 7:28 AM EDT | Severe Thunderstorm Warning | CLE | 62 min |
| Aug 7, 7:49 AM EDT | Areal Flood Advisory | CLE | 3 hr |
| Aug 7, 8:03 PM EDT | Severe Thunderstorm Warning | CLE | 27 min |
| Aug 9, 6:56 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 10, 3:40 AM EDT | Coastal Flood Statement | CLE | 16 hr |
| Aug 13, 3:37 PM EDT | Flood Watch | CLE | 47 hr |
| Aug 15, 10:11 AM EDT | Areal Flood Advisory | CLE | 3 hr |
| Aug 15, 11:11 AM EDT | Areal Flood Warning | CLE | 4 hr |
| Aug 15, 8:05 PM EDT | Severe Thunderstorm Warning | CLE | 40 min |
| Aug 19, 5:39 AM EDT | Severe Thunderstorm Warning | CLE | 66 min |
| Aug 19, 6:45 AM EDT | Severe Thunderstorm Warning | CLE | 45 min |
| Aug 20, 4:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 21, 2:17 AM EDT | Severe Thunderstorm Warning | CLE | 58 min |
| Aug 21, 3:45 AM EDT | Areal Flood Advisory | CLE | 4 hr |
| Aug 24, 9:18 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 24, 10:27 PM EDT | Tornado Watch | SPC | 5 hr |
| Aug 24, 11:30 PM EDT | Severe Thunderstorm Warning | CLE | 75 min |
| Aug 24, 11:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 25, 12:32 AM EDT | Areal Flood Advisory | CLE | 3 hr |
| Aug 25, 12:41 AM EDT | Severe Thunderstorm Warning | CLE | 79 min |
| Aug 28, 4:07 AM EDT | Coastal Flood Statement | CLE | 16 hr |
| Sep 4, 2:31 AM EDT | Severe Thunderstorm Warning | CLE | 44 min |
| Sep 4, 2:58 AM EDT | Severe Thunderstorm Warning | CLE | 62 min |
| Sep 5, 4:29 AM EDT | Coastal Flood Statement | CLE | 18 hr |
| Sep 6, 4:58 AM EDT | Coastal Flood Statement | CLE | 17 hr |
| Sep 7, 4:09 AM EDT | Coastal Flood Statement | CLE | 18 hr |
| Sep 8, 4:20 AM EDT | Coastal Flood Statement | CLE | 18 hr |
| Sep 10, 4:34 AM EDT | Areal Flood Advisory | CLE | 5 hr |
| Sep 13, 6:17 PM EDT | Severe Thunderstorm Warning | CLE | 28 min |
| Sep 13, 7:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 15, 4:40 AM EDT | Coastal Flood Statement | CLE | 15 hr |
| Sep 30, 5:08 AM EDT | Coastal Flood Statement | CLE | 15 hr |
| Oct 14, 3:58 AM EDT | High Wind Watch | CLE | 11 hr |
| Oct 14, 3:19 PM EDT | Wind Advisory | CLE | 27 hr |
| Oct 22, 3:16 PM EDT | Frost Advisory | CLE | 18 hr |
| Oct 27, 3:40 PM EDT | Frost Advisory | CLE | 18 hr |
| Oct 27, 3:40 PM EDT | Freeze Warning | CLE | 18 hr |
| Oct 30, 3:25 AM EDT | Dense Fog Advisory | CLE | 7 hr |
| Nov 10, 3:28 PM EST | Lake Effect Snow Advisory | CLE | 19 hr |
| Nov 13, 3:42 AM EST | Wind Advisory | CLE | 14 hr |
| Nov 14, 3:29 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 14, 4:37 PM EST | Severe Thunderstorm Warning | CLE | 68 min |
| Nov 14, 4:38 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 14, 4:49 PM EST | Tornado Warning | CLE | 41 min |
| Nov 14, 5:10 PM EST | Areal Flood Advisory | CLE | 6 hr |
| Nov 29, 12:02 PM EST | Areal Flood Advisory | CLE | 4 hr |
| Dec 8, 3:30 PM EST | Winter Weather Advisory | CLE | 19 hr |
| Dec 9, 10:03 AM EST | Lake Effect Snow Advisory | CLE | 24 hr |
| Dec 18, 9:22 AM EST | Lake Effect Snow Advisory | CLE | 4 hr |
| Dec 27, 3:37 AM EST | Lake Effect Snow Watch | CLE | 12 hr |
| Dec 27, 3:37 AM EST | Winter Weather Advisory | CLE | 27 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.