Alert archive / Indiana / Switzerland County
Weather alerts in Switzerland County, Indiana, 2021
91 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Switzerland County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 91
- Warnings
- 23
- Watches
- 11
- Advisories
- 36
- Busiest month
- June16 alerts
- Busiest day
- June 19, 202111 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Switzerland County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 8 | 11% | 2 | 100% | 15 min |
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wilmington, OH: tornado warnings | 17 | 6 | 65% | 15 | 40% | 10 min |
| NWS Wilmington, OH: severe thunderstorm warnings | 126 | 85 | 33% | 276 | 64% | 19 min |
| NWS Wilmington, OH: flash flood warnings | 33 | 20 | 39% | 35 | 86% | 77 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 18, 3:33 PM EST | Winter Weather Advisory | ILN | 17 hr |
| Jan 24, 3:54 PM EST | Winter Weather Advisory | ILN | 38 hr |
| Jan 26, 2:53 PM EST | Winter Weather Advisory | ILN | 34 hr |
| Jan 30, 3:51 AM EST | Winter Weather Advisory | ILN | 33 hr |
| Feb 1, 3:39 AM EST | Winter Weather Advisory | ILN | 8 hr |
| Feb 8, 3:30 AM EST | Winter Weather Advisory | ILN | 27 hr |
| Feb 8, 9:29 PM EST | Winter Storm Warning | ILN | 9 hr |
| Feb 9, 3:05 PM EST | Winter Weather Advisory | ILN | 39 hr |
| Feb 12, 3:38 PM EST | Winter Storm Watch | ILN | 37 hr |
| Feb 14, 4:14 AM EST | Winter Storm Warning | ILN | 48 hr |
| Feb 15, 11:44 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 3:50 AM EST | Winter Weather Advisory | ILN | 42 hr |
| Feb 28, 8:46 AM EST | Areal Flood Advisory | ILN | 6 hr |
| Feb 28, 9:46 AM EST | Areal Flood Warning | ILN | 8 hr |
| Feb 28, 5:42 PM EST | Areal Flood Advisory | ILN | 14 hr |
| Mar 1, 11:30 AM EST | River Flood Advisory | ILN | 57 hr |
| Mar 3, 8:55 PM EST | River Flood Warning | ILN | 66 hr |
| Mar 17, 7:24 AM EDT | Dense Fog Advisory | ILN | 4 hr |
| Mar 25, 3:30 AM EDT | Wind Advisory | ILN | 29 hr |
| Mar 25, 8:05 PM EDT | Severe Thunderstorm Warning | ILN | 40 min |
| Mar 25, 10:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 25, 11:20 PM EDT | Special Weather Statement | ILN | 25 min |
| Mar 25, 11:37 PM EDT | Special Weather Statement | ILN | 38 min |
| Mar 25, 11:41 PM EDT | Severe Thunderstorm Warning | ILN | 34 min |
| Mar 30, 3:24 PM EDT | Freeze Watch | ILN | 24 hr |
| Mar 30, 3:24 PM EDT | Freeze Warning | ILN | 43 hr |
| Mar 31, 3:31 PM EDT | Freeze Warning | ILN | 43 hr |
| Apr 1, 3:32 PM EDT | Freeze Warning | ILN | 42 hr |
| Apr 8, 4:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 19, 3:52 PM EDT | Freeze Warning | ILN | 42 hr |
| Apr 20, 3:30 AM EDT | Freeze Watch | ILN | 24 hr |
| Apr 21, 3:54 AM EDT | Freeze Warning | ILN | 30 hr |
| Apr 21, 3:04 PM EDT | Freeze Watch | ILN | 24 hr |
| Apr 22, 3:12 PM EDT | Frost Advisory | ILN | 18 hr |
| Apr 25, 3:18 AM EDT | Dense Fog Advisory | ILN | 6 hr |
| Apr 30, 3:14 AM EDT | Frost Advisory | ILN | 30 hr |
| May 7, 2:58 PM EDT | Frost Advisory | ILN | 17 hr |
| May 26, 10:50 PM EDT | Dense Fog Advisory | ILN | 10 hr |
| Jun 4, 1:50 AM EDT | Dense Fog Advisory | ILN | 7 hr |
| Jun 10, 2:28 PM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jun 11, 5:52 PM EDT | Special Weather Statement | ILN | 38 min |
| Jun 13, 2:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 18, 3:48 AM EDT | Flash Flood Watch | ILN | 33 hr |
| Jun 18, 8:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 18, 8:56 PM EDT | Severe Thunderstorm Warning | ILN | 34 min |
| Jun 18, 9:09 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 9:30 PM EDT | Severe Thunderstorm Warning | ILN | 15 min |
| Jun 18, 11:59 PM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jun 19, 1:28 AM EDT | Flash Flood Warning | ILN | 4 hr |
| Jun 19, 3:44 AM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jun 19, 4:40 AM EDT | Areal Flood Advisory | ILN | 5 hr |
| Jun 19, 6:54 AM EDT | Flash Flood Warning | ILN | 13 hr |
| Jun 19, 8:11 AM EDT | Special Weather Statement | ILN | 34 min |
| Jun 19, 10:02 AM EDT | Areal Flood Warning | ILN | 6 hr |
| Jul 1, 1:02 AM EDT | Flash Flood Watch | ILN | 19 hr |
| Jul 1, 3:19 AM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jul 8, 1:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 8, 5:33 PM EDT | Severe Thunderstorm Warning | ILN | 31 min |
| Jul 8, 6:06 PM EDT | Special Weather Statement | ILN | 24 min |
| Jul 10, 7:59 PM EDT | Special Weather Statement | ILN | 46 min |
| Jul 13, 5:13 PM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jul 16, 3:27 AM EDT | Flash Flood Watch | ILN | 29 hr |
| Jul 16, 1:10 PM EDT | Mesoscale Discussion | SPC | 4 hr |
| Jul 16, 1:58 PM EDT | Special Weather Statement | ILN | 32 min |
| Jul 16, 2:11 PM EDT | Severe Thunderstorm Warning | ILN | 49 min |
| Jul 16, 10:15 PM EDT | Special Weather Statement | ILN | 30 min |
| Jul 16, 10:33 PM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jul 17, 12:16 AM EDT | Areal Flood Advisory | ILN | 3 hr |
| Jul 29, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 10, 9:04 AM EDT | Special Weather Statement | ILN | 26 min |
| Aug 11, 2:55 PM EDT | Heat Advisory | ILN | 29 hr |
| Aug 13, 1:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 19, 3:37 PM EDT | Dense Fog Advisory | ILN | 17 hr |
| Aug 24, 10:41 AM EDT | Heat Advisory | ILN | 8 hr |
| Aug 25, 12:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 26, 9:36 AM EDT | Heat Advisory | ILN | 9 hr |
| Aug 27, 4:34 PM EDT | Special Weather Statement | ILN | 26 min |
| Aug 27, 5:01 PM EDT | Severe Thunderstorm Warning | ILN | 33 min |
| Aug 27, 5:03 PM EDT | Areal Flood Advisory | ILN | 10 min |
| Aug 27, 5:08 PM EDT | Severe Thunderstorm Warning | ILN | 37 min |
| Aug 27, 5:13 PM EDT | Flash Flood Warning | ILN | 113 min |
| Aug 27, 5:33 PM EDT | Areal Flood Advisory | ILN | 3 hr |
| Aug 30, 3:38 AM EDT | Flash Flood Watch | ILN | 48 hr |
| Aug 30, 10:13 AM EDT | Areal Flood Advisory | ILN | 3 hr |
| Oct 5, 4:19 AM EDT | Dense Fog Advisory | ILN | 6 hr |
| Oct 15, 10:56 PM EDT | Special Weather Statement | ILN | 34 min |
| Oct 26, 3:07 PM EDT | Frost Advisory | ILN | 19 hr |
| Nov 2, 3:42 AM EDT | Freeze Warning | ILN | 30 hr |
| Dec 11, 12:08 AM EST | Mesoscale Discussion | SPC | 67 min |
| Dec 11, 12:20 AM EST | Tornado Watch | SPC | 6 hr |
| Dec 11, 1:34 AM EST | Severe Thunderstorm Warning | ILN | 28 min |
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 | 9 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 10 |
| Special Weather Statement | 11 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 3 |
| River Flood Warning | 1 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 13 |
| River Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 3 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
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.