Alert archive / Ohio / Perry County
Weather alerts in Perry County, Ohio, 2011
161 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Perry County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 161
- Warnings
- 23
- Watches
- 29
- Advisories
- 19
- Busiest month
- July38 alerts
- Busiest day
- July 18, 20117 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Perry County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 11 | 31% | 20 | 90% | 23 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 0% |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: tornado warnings | 10 | 1 | 90% | 1 | 100% | 24 min |
| NWS Charleston, WV: severe thunderstorm warnings | 268 | 171 | 36% | 440 | 82% | 24 min |
| NWS Charleston, WV: flash flood warnings | 52 | 24 | 54% | 53 | 91% | 62 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 6, 4:00 AM EST | Winter Weather Advisory | RLX | 3 days |
| Jan 9, 4:08 PM EST | Winter Storm Watch | RLX | 12 hr |
| Jan 10, 3:54 AM EST | Winter Weather Advisory | RLX | 3 days |
| Jan 18, 2:30 PM EST | Winter Storm Watch | RLX | 25 hr |
| Jan 19, 3:46 PM EST | Winter Storm Warning | RLX | 36 hr |
| Jan 20, 3:36 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 31, 3:41 PM EST | Freezing Rain Advisory | RLX | 20 hr |
| Feb 1, 3:47 PM EST | Wind Advisory | RLX | 27 hr |
| Feb 1, 7:25 PM EST | Freezing Rain Advisory | RLX | 5 hr |
| Feb 21, 3:30 PM EST | Winter Weather Advisory | RLX | 19 hr |
| Feb 21, 6:33 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 23, 4:23 AM EST | Flood Watch | RLX | 51 hr |
| Feb 27, 2:34 AM EST | Flood Watch | RLX | 43 hr |
| Feb 28, 1:28 AM EST | Mesoscale Discussion | SPC | 32 min |
| Feb 28, 1:40 AM EST | Tornado Watch | SPC | 6 hr |
| Feb 28, 3:32 AM EST | Mesoscale Discussion | SPC | 58 min |
| Feb 28, 5:31 AM EST | Mesoscale Discussion | SPC | 29 min |
| Feb 28, 5:47 AM EST | Tornado Watch | SPC | 5 hr |
| Feb 28, 5:52 AM EST | Severe Thunderstorm Warning | RLX | 53 min |
| Mar 4, 3:00 PM EST | Flood Watch | RLX | 48 hr |
| Mar 7, 4:01 PM EST | Flood Watch | RLX | 3 days |
| Mar 10, 3:55 AM EST | Winter Weather Advisory | RLX | 34 hr |
| Mar 21, 2:34 PM EDT | Special Weather Statement | RLX | 26 min |
| Mar 21, 3:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 21, 6:01 PM EDT | Severe Thunderstorm Warning | RLX | 44 min |
| Mar 23, 12:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Mar 23, 1:13 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 23, 3:46 PM EDT | Special Weather Statement | RLX | 44 min |
| Mar 23, 3:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 3, 2:55 PM EDT | Wind Advisory | RLX | 35 hr |
| Apr 4, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 4, 3:43 PM EDT | Special Weather Statement | RLX | 47 min |
| Apr 4, 3:47 PM EDT | Severe Thunderstorm Warning | RLX | 28 min |
| Apr 4, 4:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 11, 12:08 PM EDT | Flash Flood Watch | RLX | 33 hr |
| Apr 19, 4:48 AM EDT | Flash Flood Watch | RLX | 13 hr |
| Apr 19, 2:50 PM EDT | Severe Thunderstorm Warning | RLX | 40 min |
| Apr 19, 3:37 PM EDT | Areal Flood Warning | RLX | 3 hr |
| Apr 19, 8:59 PM EDT | Flood Watch | RLX | 15 hr |
| Apr 20, 1:59 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 20, 2:41 AM EDT | Severe Thunderstorm Warning | RLX | 34 min |
| Apr 20, 2:51 AM EDT | Severe Thunderstorm Warning | RLX | 54 min |
| Apr 21, 4:04 AM EDT | Flash Flood Watch | RLX | 4 days |
| Apr 23, 3:16 AM EDT | Special Weather Statement | RLX | 119 min |
| Apr 25, 1:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Apr 25, 4:10 PM EDT | Special Weather Statement | RLX | 35 min |
| Apr 25, 4:26 PM EDT | Severe Thunderstorm Warning | RLX | 20 min |
| Apr 27, 3:40 AM EDT | Flash Flood Watch | RLX | 28 hr |
| Apr 27, 9:39 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 27, 5:44 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 7:10 PM EDT | Special Weather Statement | RLX | 80 min |
| May 3, 1:07 PM EDT | Special Weather Statement | RLX | 3 hr |
| May 3, 4:11 PM EDT | Special Weather Statement | RLX | 109 min |
| May 4, 3:18 PM EDT | Frost Advisory | RLX | 18 hr |
| May 6, 8:25 PM EDT | Special Weather Statement | RLX | 35 min |
| May 10, 6:14 AM EDT | Special Weather Statement | ILN | 46 min |
| May 12, 11:04 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 14, 4:20 PM EDT | Special Weather Statement | RLX | 25 min |
| May 14, 6:02 PM EDT | Special Weather Statement | RLX | 88 min |
| May 22, 2:51 PM EDT | Mesoscale Discussion | SPC | 54 min |
| May 22, 5:40 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 22, 7:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 23, 7:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 23, 8:31 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 23, 8:41 PM EDT | Severe Thunderstorm Warning | RLX | 64 min |
| May 23, 8:50 PM EDT | Severe Thunderstorm Warning | RLX | 55 min |
| May 23, 9:36 PM EDT | Severe Thunderstorm Warning | RLX | 54 min |
| May 25, 8:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 1:33 AM EDT | Special Weather Statement | RLX | 27 min |
| May 26, 2:15 AM EDT | Special Weather Statement | RLX | 60 min |
| May 26, 3:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 4, 5:51 PM EDT | Mesoscale Discussion | SPC | 24 min |
| Jun 4, 6:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 4, 8:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 12:08 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 5, 2:15 AM EDT | Flash Flood Warning | RLX | 2 hr |
| Jun 7, 10:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 7, 11:06 AM EDT | Special Weather Statement | RLX | 4 hr |
| Jun 7, 1:15 PM EDT | Severe Thunderstorm Warning | RLX | 46 min |
| Jun 7, 1:27 PM EDT | Severe Thunderstorm Warning | RLX | 50 min |
| Jun 9, 12:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 4:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 10, 8:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 10, 8:59 PM EDT | Special Weather Statement | RLX | 61 min |
| Jun 11, 1:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 1:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 17, 4:01 PM EDT | Special Weather Statement | RLX | 44 min |
| Jun 17, 7:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 19, 6:27 PM EDT | Special Weather Statement | RLX | 78 min |
| Jun 21, 7:07 PM EDT | Special Weather Statement | RLX | 38 min |
| Jun 23, 12:56 AM EDT | Special Weather Statement | RLX | 34 min |
| Jun 23, 12:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 27, 9:36 PM EDT | Special Weather Statement | RLX | 54 min |
| Jun 27, 10:46 PM EDT | Special Weather Statement | RLX | 59 min |
| Jul 3, 9:34 PM EDT | Flash Flood Warning | RLX | 116 min |
| Jul 11, 8:50 AM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 11, 1:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 11, 2:16 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 2:28 PM EDT | Special Weather Statement | RLX | 62 min |
| Jul 11, 2:46 PM EDT | Severe Thunderstorm Warning | RLX | 59 min |
| Jul 11, 3:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 11, 8:51 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 11, 9:16 PM EDT | Severe Thunderstorm Warning | RLX | 59 min |
| Jul 11, 9:22 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 11, 9:40 PM EDT | Special Weather Statement | RLX | 50 min |
| Jul 11, 9:54 PM EDT | Severe Thunderstorm Warning | RLX | 36 min |
| Jul 18, 3:06 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 18, 4:30 PM EDT | Special Weather Statement | RLX | 45 min |
| Jul 18, 5:09 PM EDT | Special Weather Statement | RLX | 51 min |
| Jul 18, 5:46 PM EDT | Severe Thunderstorm Warning | RLX | 44 min |
| Jul 18, 6:06 PM EDT | Special Weather Statement | RLX | 24 min |
| Jul 18, 6:14 PM EDT | Mesoscale Discussion | SPC | 31 min |
| Jul 18, 6:26 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 19, 2:46 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 19, 4:39 PM EDT | Special Weather Statement | RLX | 51 min |
| Jul 19, 7:35 PM EDT | Special Weather Statement | RLX | 25 min |
| Jul 20, 11:33 AM EDT | Excessive Heat Warning | RLX | 32 hr |
| Jul 20, 5:06 PM EDT | Special Weather Statement | RLX | 24 min |
| Jul 20, 6:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 21, 2:47 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 22, 12:20 PM EDT | Excessive Heat Warning | RLX | 8 hr |
| Jul 22, 12:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 22, 4:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 22, 6:53 PM EDT | Special Weather Statement | RLX | 37 min |
| Jul 22, 7:10 PM EDT | Mesoscale Discussion | SPC | 35 min |
| Jul 23, 4:38 AM EDT | Heat Advisory | RLX | 15 hr |
| Jul 23, 3:18 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 24, 6:55 PM EDT | Special Weather Statement | RLX | 65 min |
| Jul 28, 2:30 PM EDT | Heat Advisory | RLX | 6 hr |
| Jul 28, 3:26 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 29, 2:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 29, 9:17 PM EDT | Special Weather Statement | RLX | 43 min |
| Aug 1, 3:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Aug 3, 4:28 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 3, 8:21 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 7, 2:45 PM EDT | Flash Flood Watch | RLX | 12 hr |
| Aug 7, 4:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 7, 5:29 PM EDT | Special Weather Statement | RLX | 46 min |
| Aug 7, 5:49 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 9, 8:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 9, 11:06 PM EDT | Special Weather Statement | RLX | 39 min |
| Aug 13, 11:31 PM EDT | Special Weather Statement | RLX | 44 min |
| Aug 21, 6:49 AM EDT | Special Weather Statement | RLX | 41 min |
| Aug 21, 7:32 AM EDT | Special Weather Statement | RLX | 58 min |
| Aug 21, 1:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 21, 3:05 PM EDT | Special Weather Statement | RLX | 25 min |
| Aug 24, 7:24 AM EDT | Special Weather Statement | RLX | 51 min |
| Aug 24, 11:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 25, 2:31 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Sep 2, 3:55 AM EDT | Heat Advisory | RLX | 15 hr |
| Sep 4, 3:47 PM EDT | Flash Flood Watch | RLX | 13 hr |
| Sep 29, 6:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Oct 19, 5:24 PM EDT | Special Weather Statement | RLX | 51 min |
| Oct 19, 5:28 PM EDT | Special Weather Statement | RLX | 47 min |
| Oct 22, 4:22 AM EDT | Frost Advisory | RLX | 29 hr |
| Oct 27, 2:58 PM EDT | Frost Advisory | RLX | 18 hr |
| Oct 29, 2:26 PM EDT | Freeze Warning | RLX | 19 hr |
| Nov 14, 8:41 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 14, 9:04 PM EST | Special Weather Statement | RLX | 41 min |
| Nov 14, 9:30 PM EST | Special Weather Statement | RLX | 45 min |
| Nov 22, 3:33 AM EST | Flash Flood Watch | RLX | 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.