Alert archive / Ohio / Shelby County
Weather alerts in Shelby County, Ohio, 2019
141 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Shelby County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 141
- Warnings
- 36
- Watches
- 17
- Advisories
- 43
- Busiest month
- May39 alerts
- Busiest day
- May 17, 201912 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Shelby County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 7 | 59% | 5 | 80% | 23 min |
| Flash flood warnings | 3 | 3 | 0% | 3 | 100% | 42 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wilmington, OH: tornado warnings | 64 | 19 | 70% | 52 | 65% | 17 min |
| NWS Wilmington, OH: severe thunderstorm warnings | 248 | 164 | 34% | 544 | 66% | 16 min |
| NWS Wilmington, OH: flash flood warnings | 43 | 28 | 35% | 89 | 85% | 91 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 8, 3:35 AM EST | Wind Advisory | ILN | 16 hr |
| Jan 11, 3:38 AM EST | Winter Weather Advisory | ILN | 56 hr |
| Jan 15, 7:00 PM EST | Winter Weather Advisory | ILN | 14 hr |
| Jan 17, 2:59 PM EST | Winter Storm Watch | ILN | 24 hr |
| Jan 17, 6:10 PM EST | Dense Fog Advisory | ILN | 10 hr |
| Jan 18, 11:29 AM EST | Winter Storm Warning | ILN | 43 hr |
| Jan 19, 6:24 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 19, 10:35 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 20, 4:48 AM EST | Wind Chill Advisory | ILN | 31 hr |
| Jan 21, 2:32 PM EST | Wind Chill Advisory | ILN | 15 hr |
| Jan 24, 2:34 AM EST | Winter Weather Advisory | ILN | 5 hr |
| Jan 24, 11:45 AM EST | Wind Chill Advisory | ILN | 23 hr |
| Jan 28, 2:15 AM EST | Wind Chill Watch | ILN | 14 hr |
| Jan 28, 3:46 PM EST | Wind Chill Warning | ILN | 69 hr |
| Jan 28, 3:46 PM EST | Winter Weather Advisory | ILN | 16 min |
| Jan 28, 4:02 PM EST | Winter Weather Advisory | ILN | 18 hr |
| Jan 31, 3:15 AM EST | Winter Weather Advisory | ILN | 31 hr |
| Feb 2, 12:16 AM EST | Dense Fog Advisory | ILN | 13 hr |
| Feb 5, 3:53 PM EST | Flood Watch | ILN | 60 hr |
| Feb 6, 7:45 PM EST | Dense Fog Advisory | ILN | 8 hr |
| Feb 7, 1:28 PM EST | Flash Flood Warning | ILN | 3 hr |
| Feb 7, 2:02 PM EST | Areal Flood Warning | ILN | 50 hr |
| Feb 7, 2:53 PM EST | Wind Advisory | ILN | 13 hr |
| Feb 7, 4:31 PM EST | Areal Flood Warning | ILN | 19 hr |
| Feb 7, 6:15 PM EST | River Flood Warning | ILN | 24 hr |
| Feb 9, 3:15 PM EST | Flood Watch | ILN | 3 days |
| Feb 11, 10:08 PM EST | Winter Weather Advisory | ILN | 4 hr |
| Feb 12, 3:26 AM EST | Wind Advisory | ILN | 28 hr |
| Feb 17, 3:29 AM EST | Winter Weather Advisory | ILN | 22 hr |
| Feb 19, 3:13 AM EST | Winter Weather Advisory | ILN | 29 hr |
| Feb 20, 3:25 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 22, 3:38 AM EST | High Wind Watch | ILN | 35 hr |
| Feb 23, 2:41 PM EST | High Wind Warning | ILN | 34 hr |
| Mar 9, 3:11 PM EST | Wind Advisory | ILN | 19 hr |
| Mar 13, 3:03 PM EDT | Wind Advisory | ILN | 31 hr |
| Mar 14, 10:47 AM EDT | Tornado Watch | SPC | 6 hr |
| Mar 14, 5:03 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 12, 7:18 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Apr 12, 7:47 AM EDT | Severe Thunderstorm Warning | ILN | 28 min |
| Apr 14, 4:25 PM EDT | Severe Thunderstorm Warning | ILN | 50 min |
| May 2, 3:39 AM EDT | Dense Fog Advisory | ILN | 6 hr |
| May 16, 9:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 11:22 PM EDT | Severe Thunderstorm Warning | ILN | 38 min |
| May 16, 11:59 PM EDT | Severe Thunderstorm Warning | ILN | 46 min |
| May 17, 12:39 AM EDT | Severe Thunderstorm Warning | ILN | 51 min |
| May 17, 12:50 AM EDT | Areal Flood Advisory | ILN | 3 hr |
| May 17, 1:38 AM EDT | Special Weather Statement | ILN | 37 min |
| May 17, 1:40 AM EDT | Flash Flood Warning | ILN | 3 hr |
| May 17, 1:56 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 17, 2:45 AM EDT | Special Weather Statement | ILN | 30 min |
| May 17, 4:41 AM EDT | Areal Flood Warning | ILN | 3 days |
| May 17, 6:41 AM EDT | River Flood Warning | ILN | 46 hr |
| May 17, 3:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 19, 3:51 AM EDT | Wind Advisory | ILN | 12 hr |
| May 19, 3:35 PM EDT | Special Weather Statement | ILN | 40 min |
| May 23, 6:45 AM EDT | Special Weather Statement | ILN | 45 min |
| May 25, 1:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 25, 2:21 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 25, 2:56 PM EDT | Special Weather Statement | ILN | 34 min |
| May 25, 3:22 PM EDT | Special Weather Statement | ILN | 23 min |
| May 25, 3:44 PM EDT | Special Weather Statement | ILN | 31 min |
| May 26, 4:06 AM EDT | Mesoscale Discussion | SPC | 84 min |
| May 26, 5:57 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 26, 6:06 AM EDT | Special Weather Statement | ILN | 24 min |
| May 26, 6:11 AM EDT | Severe Thunderstorm Warning | ILN | 34 min |
| May 27, 6:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 27, 8:20 PM EDT | Tornado Watch | SPC | 6 hr |
| May 27, 9:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 27, 9:44 PM EDT | Severe Thunderstorm Warning | ILN | 46 min |
| May 27, 10:11 PM EDT | Severe Thunderstorm Warning | ILN | 49 min |
| May 27, 11:04 PM EDT | Areal Flood Advisory | ILN | 3 hr |
| May 27, 11:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 28, 12:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 28, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 28, 3:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 28, 6:27 PM EDT | Special Weather Statement | ILN | 33 min |
| May 28, 7:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| May 28, 8:00 PM EDT | Special Weather Statement | ILN | 30 min |
| May 30, 4:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 12:12 AM EDT | Severe Thunderstorm Warning | ILN | 33 min |
| Jun 5, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 5, 1:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 5, 4:35 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 12, 7:29 PM EDT | Special Weather Statement | ILN | 31 min |
| Jun 15, 3:25 AM EDT | Flash Flood Watch | ILN | 6 days |
| Jun 15, 11:23 PM EDT | Severe Thunderstorm Warning | ILN | 17 min |
| Jun 16, 7:47 PM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jun 18, 12:56 AM EDT | Areal Flood Advisory | ILN | 8 hr |
| Jun 18, 8:57 AM EDT | Areal Flood Warning | ILN | 52 hr |
| Jun 18, 9:14 AM EDT | River Flood Warning | ILN | 31 hr |
| Jun 19, 12:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 19, 4:34 PM EDT | Flash Flood Warning | ILN | 9 hr |
| Jun 19, 4:41 PM EDT | Special Weather Statement | ILN | 34 min |
| Jun 19, 4:54 PM EDT | Severe Thunderstorm Warning | ILN | 38 min |
| Jun 19, 9:14 PM EDT | River Flood Warning | ILN | 54 hr |
| Jun 20, 1:54 PM EDT | Areal Flood Warning | ILN | 48 hr |
| Jun 27, 9:37 PM EDT | Special Weather Statement | ILN | 23 min |
| Jun 27, 10:00 PM EDT | Special Weather Statement | ILN | 30 min |
| Jul 6, 2:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 4:01 PM EDT | Special Weather Statement | ILN | 29 min |
| Jul 15, 5:33 PM EDT | Special Weather Statement | ILN | 27 min |
| Jul 17, 3:55 AM EDT | Excessive Heat Watch | ILN | 24 hr |
| Jul 17, 3:43 PM EDT | Heat Advisory | ILN | 12 hr |
| Jul 18, 3:42 AM EDT | Excessive Heat Warning | ILN | 4 days |
| Jul 18, 3:40 PM EDT | Special Weather Statement | ILN | 35 min |
| Jul 18, 3:48 PM EDT | Severe Thunderstorm Warning | ILN | 27 min |
| Jul 20, 3:52 PM EDT | Heat Advisory | ILN | 24 hr |
| Aug 8, 5:15 PM EDT | Severe Thunderstorm Warning | ILN | 45 min |
| Aug 8, 7:28 PM EDT | Special Weather Statement | ILN | 32 min |
| Aug 8, 7:50 PM EDT | Severe Thunderstorm Warning | ILN | 40 min |
| Aug 8, 8:27 PM EDT | Severe Thunderstorm Warning | ILN | 22 min |
| Aug 8, 8:44 PM EDT | Special Weather Statement | ILN | 31 min |
| Aug 8, 8:58 PM EDT | Severe Thunderstorm Warning | ILN | 16 min |
| Aug 8, 9:23 PM EDT | Areal Flood Advisory | ILN | 2 hr |
| Aug 14, 5:15 AM EDT | Dense Fog Advisory | ILN | 5 hr |
| Aug 14, 4:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 14, 5:45 PM EDT | Severe Thunderstorm Warning | ILN | 45 min |
| Aug 18, 3:16 AM EDT | Special Weather Statement | ILN | 44 min |
| Aug 18, 3:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 18, 3:24 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 18, 9:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 20, 3:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 13, 7:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Oct 3, 4:47 AM EDT | Dense Fog Advisory | ILN | 4 hr |
| Oct 12, 3:36 AM EDT | Frost Advisory | ILN | 30 hr |
| Oct 14, 3:04 PM EDT | Frost Advisory | ILN | 18 hr |
| Oct 17, 3:04 PM EDT | Frost Advisory | ILN | 19 hr |
| Oct 18, 3:20 PM EDT | Frost Advisory | ILN | 18 hr |
| Oct 30, 3:30 AM EDT | Freeze Watch | ILN | 24 hr |
| Oct 31, 3:59 AM EDT | Freeze Warning | ILN | 31 hr |
| Oct 31, 3:59 AM EDT | Wind Advisory | ILN | 20 hr |
| Nov 10, 3:11 PM EST | Winter Weather Advisory | ILN | 44 hr |
| Nov 25, 2:51 PM EST | High Wind Watch | ILN | 22 hr |
| Nov 26, 1:08 PM EST | High Wind Warning | ILN | 32 hr |
| Dec 15, 3:52 AM EST | Winter Weather Advisory | ILN | 26 hr |
| Dec 16, 3:30 AM EST | Winter Weather Advisory | ILN | 31 hr |
| Dec 24, 3:09 AM EST | Dense Fog Advisory | ILN | 11 hr |
| Dec 24, 5:16 PM EST | Dense Fog Advisory | ILN | 14 hr |
| Dec 27, 10:28 PM EST | Dense Fog Advisory | ILN | 13 hr |
| Dec 30, 3:13 AM EST | Wind Advisory | ILN | 4 hr |
| Dec 30, 4:07 AM EST | High Wind Warning | ILN | 3 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 archive20182020
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.