Alert archive / Indiana / Union County
Weather alerts in Union County, Indiana, 2024
129 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Union County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 129
- Warnings
- 27
- Watches
- 16
- Advisories
- 44
- Busiest month
- July35 alerts
- Busiest day
- July 30, 202414 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 9 tornado warnings covering Union County in 2024 had a tornado report inside them.
Union County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 9 | 1 | 89% | 0 | ||
| Severe thunderstorm warnings | 8 | 5 | 38% | 1 | 100% | 32 min |
| Flash flood warnings | 4 | 2 | 50% | 2 | 50% | 95 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wilmington, OH: tornado warnings | 79 | 26 | 67% | 65 | 72% | 13 min |
| NWS Wilmington, OH: severe thunderstorm warnings | 183 | 90 | 51% | 414 | 59% | 21 min |
| NWS Wilmington, OH: flash flood warnings | 24 | 12 | 50% | 69 | 57% | 71 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 9, 3:06 AM EST | Wind Advisory | ILN | 29 hr |
| Jan 11, 1:54 PM EST | Wind Advisory | ILN | 48 hr |
| Jan 13, 3:29 AM EST | Wind Chill Advisory | ILN | 57 hr |
| Jan 16, 3:05 AM EST | Wind Chill Advisory | ILN | 31 hr |
| Jan 17, 9:49 PM EST | Winter Weather Advisory | ILN | 56 hr |
| Jan 19, 3:24 AM EST | Wind Chill Advisory | ILN | 33 hr |
| Jan 22, 3:08 AM EST | Winter Weather Advisory | ILN | 32 hr |
| Jan 23, 4:56 PM EST | Dense Fog Advisory | ILN | 15 hr |
| Jan 24, 2:24 PM EST | Dense Fog Advisory | ILN | 23 hr |
| Feb 16, 3:08 AM EST | Winter Weather Advisory | ILN | 22 hr |
| Feb 16, 4:04 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 16, 6:06 PM EST | Winter Storm Warning | ILN | 7 hr |
| Feb 22, 7:58 PM EST | Dense Fog Advisory | ILN | 13 hr |
| Feb 27, 8:46 PM EST | Mesoscale Discussion | SPC | 119 min |
| Feb 27, 10:29 PM EST | Tornado Watch | SPC | 10 hr |
| Feb 28, 2:47 AM EST | Special Weather Statement | ILN | 28 min |
| Feb 28, 3:01 AM EST | Mesoscale Discussion | SPC | 119 min |
| Feb 28, 3:08 AM EST | Severe Thunderstorm Warning | ILN | 52 min |
| Feb 28, 3:39 AM EST | Tornado Warning | ILN | 22 min |
| Feb 28, 3:58 AM EST | Special Weather Statement | ILN | 32 min |
| Feb 28, 3:59 AM EST | Areal Flood Advisory | ILN | 2 hr |
| Feb 28, 4:11 AM EST | Special Weather Statement | ILN | 34 min |
| Mar 2, 8:05 AM EST | Dense Fog Advisory | ILN | 119 min |
| Mar 3, 3:19 AM EST | Dense Fog Advisory | ILN | 7 hr |
| Mar 14, 10:49 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 14, 12:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Mar 14, 1:05 PM EDT | Special Weather Statement | ILN | 25 min |
| Mar 14, 4:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Mar 14, 5:13 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 14, 7:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Mar 31, 12:39 PM EDT | Flood Watch | ILN | 58 hr |
| Apr 1, 8:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Apr 1, 8:38 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 2, 4:39 AM EDT | Severe Thunderstorm Warning | ILN | 51 min |
| Apr 2, 7:12 AM EDT | Areal Flood Advisory | ILN | 3 hr |
| Apr 2, 3:49 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 4, 3:39 PM EDT | Freeze Watch | ILN | 12 hr |
| Apr 5, 3:42 AM EDT | Freeze Warning | ILN | 29 hr |
| Apr 6, 9:09 AM EDT | Frost Advisory | ILN | 25 hr |
| Apr 11, 10:22 AM EDT | Flood Watch | ILN | 16 hr |
| Apr 11, 4:43 PM EDT | Areal Flood Advisory | ILN | 13 hr |
| Apr 12, 10:01 AM EDT | Wind Advisory | ILN | 10 hr |
| Apr 17, 11:50 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 17, 12:18 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 17, 2:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 21, 2:58 AM EDT | Frost Advisory | ILN | 30 hr |
| Apr 24, 2:16 PM EDT | Frost Advisory | ILN | 19 hr |
| May 7, 4:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 7, 6:00 PM EDT | Tornado Watch | SPC | 8 hr |
| May 7, 7:47 PM EDT | Severe Thunderstorm Warning | ILN | 28 min |
| May 7, 7:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| May 7, 7:57 PM EDT | Tornado Warning | ILN | 33 min |
| May 7, 8:04 PM EDT | Areal Flood Advisory | ILN | 6 hr |
| May 7, 8:24 PM EDT | Tornado Warning | ILN | 36 min |
| May 7, 8:26 PM EDT | Tornado Warning | ILN | 34 min |
| May 7, 8:27 PM EDT | Flash Flood Warning | ILN | 3 hr |
| May 7, 8:52 PM EDT | Tornado Warning | ILN | 23 min |
| May 7, 8:54 PM EDT | Tornado Warning | ILN | 36 min |
| May 9, 4:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| May 18, 1:40 AM EDT | Dense Fog Advisory | ILN | 8 hr |
| May 22, 4:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| May 26, 12:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 26, 12:48 PM EDT | Special Weather Statement | ILN | 57 min |
| May 26, 1:01 PM EDT | Severe Thunderstorm Warning | ILN | 44 min |
| May 26, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 26, 1:17 PM EDT | Special Weather Statement | ILN | 58 min |
| May 26, 1:40 PM EDT | Special Weather Statement | ILN | 35 min |
| May 26, 3:03 PM EDT | Areal Flood Advisory | ILN | 114 min |
| May 26, 11:32 PM EDT | Special Weather Statement | ILN | 43 min |
| Jun 3, 1:02 AM EDT | Dense Fog Advisory | ILN | 8 hr |
| Jun 16, 3:24 AM EDT | Excessive Heat Watch | ILN | 24 hr |
| Jun 17, 3:01 AM EDT | Heat Advisory | ILN | 6 days |
| Jun 25, 1:13 PM EDT | Special Weather Statement | ILN | 32 min |
| Jun 29, 5:05 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 29, 5:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 29, 5:38 PM EDT | Severe Thunderstorm Warning | ILN | 52 min |
| Jul 3, 2:57 AM EDT | Heat Advisory | ILN | 17 hr |
| Jul 3, 12:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 3, 3:47 PM EDT | Special Weather Statement | ILN | 43 min |
| Jul 4, 12:30 PM EDT | Areal Flood Advisory | ILN | 2 hr |
| Jul 9, 3:07 PM EDT | Tornado Watch | SPC | 10 hr |
| Jul 9, 8:22 PM EDT | Tornado Warning | ILN | 23 min |
| Jul 9, 8:41 PM EDT | Tornado Warning | ILN | 34 min |
| Jul 9, 9:11 PM EDT | Severe Thunderstorm Warning | ILN | 22 min |
| Jul 9, 9:42 PM EDT | Areal Flood Advisory | ILN | 5 hr |
| Jul 9, 9:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 9, 11:20 PM EDT | Areal Flood Advisory | ILN | 5 hr |
| Jul 14, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 14, 2:12 PM EDT | Special Weather Statement | ILN | 48 min |
| Jul 14, 3:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 15, 8:47 AM EDT | Heat Advisory | ILN | 11 hr |
| Jul 15, 3:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 16, 1:28 AM EDT | Special Weather Statement | ILN | 32 min |
| Jul 16, 1:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 1:58 AM EDT | Special Weather Statement | ILN | 32 min |
| Jul 24, 2:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 29, 4:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 29, 8:26 PM EDT | Severe Thunderstorm Warning | ILN | 34 min |
| Jul 29, 9:28 PM EDT | Tornado Warning | ILN | 32 min |
| Jul 29, 9:49 PM EDT | Severe Thunderstorm Warning | ILN | 41 min |
| Jul 29, 9:50 PM EDT | Areal Flood Advisory | ILN | 68 min |
| Jul 29, 10:22 PM EDT | Special Weather Statement | ILN | 23 min |
| Jul 29, 10:58 PM EDT | Flash Flood Warning | ILN | 4 hr |
| Jul 29, 11:17 PM EDT | Areal Flood Advisory | ILN | 4 hr |
| Jul 29, 11:40 PM EDT | Flash Flood Warning | ILN | 3 hr |
| Jul 30, 12:50 AM EDT | Flash Flood Warning | ILN | 107 min |
| Jul 30, 1:14 AM EDT | Areal Flood Advisory | ILN | 7 hr |
| Jul 30, 2:34 AM EDT | Areal Flood Advisory | ILN | 5 hr |
| Jul 30, 2:35 AM EDT | Areal Flood Advisory | ILN | 5 hr |
| Jul 30, 2:37 AM EDT | Areal Flood Advisory | ILN | 5 hr |
| Jul 30, 3:38 AM EDT | River Flood Warning | ILN | 3 hr |
| Aug 1, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 6, 8:47 PM EDT | Special Weather Statement | ILN | 58 min |
| Aug 26, 2:46 PM EDT | Heat Advisory | ILN | 53 hr |
| Aug 30, 1:28 PM EDT | Heat Advisory | ILN | 6 hr |
| Sep 6, 3:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 6, 4:20 PM EDT | Special Weather Statement | ILN | 25 min |
| Sep 24, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 26, 1:31 PM EDT | Wind Advisory | ILN | 31 hr |
| Sep 27, 3:19 AM EDT | High Wind Warning | ILN | 15 hr |
| Oct 1, 2:33 AM EDT | Dense Fog Advisory | ILN | 6 hr |
| Oct 15, 3:03 AM EDT | Freeze Warning | ILN | 30 hr |
| Oct 16, 12:15 PM EDT | Freeze Warning | ILN | 21 hr |
| Oct 17, 1:39 PM EDT | Frost Advisory | ILN | 19 hr |
| Nov 21, 3:10 AM EST | Winter Weather Advisory | ILN | 24 hr |
| Dec 4, 11:02 PM EST | Special Weather Statement | ILN | 58 min |
| Dec 10, 7:17 AM EST | Dense Fog Advisory | ILN | 3 hr |
| Dec 29, 2:40 AM EST | Wind Advisory | ILN | 20 hr |
| Dec 29, 1:41 PM EST | Mesoscale Discussion | SPC | 2 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 | 8 |
| Tornado Warning | 9 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 17 |
| Flooding | |
| Flash Flood Warning | 4 |
| River Flood Warning | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 14 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Weather Advisory | 4 |
| Heat | |
| Excessive Heat Watch | 1 |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.