Alert archive / Indiana / DeKalb County
Weather alerts in DeKalb County, Indiana, 2025
99 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
DeKalb County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 99
- Warnings
- 16
- Watches
- 13
- Advisories
- 37
- Busiest month
- June21 alerts
- Busiest day
- March 15, 20257 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 2 tornado warnings covering DeKalb County in 2025 had a tornado report inside them.
DeKalb County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 9 | 4 | 56% | 3 | 67% | 25 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 14 | 4 | 71% | 16 | 25% | 7 min |
| NWS Northern Indiana: severe thunderstorm warnings | 128 | 63 | 51% | 393 | 83% | 22 min |
| NWS Northern Indiana: flash flood warnings | 3 | 1 | 67% | 6 | 33% | 52 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 10, 3:19 AM EST | Winter Weather Advisory | IWX | 31 hr |
| Jan 18, 2:47 AM EST | Extreme Cold Watch | IWX | 24 hr |
| Jan 19, 2:30 AM EST | Cold Weather Advisory | IWX | 3 days |
| Jan 31, 2:20 AM EST | Dense Fog Advisory | IWX | 8 hr |
| Feb 2, 8:14 PM EST | Dense Fog Advisory | IWX | 10 hr |
| Feb 5, 2:49 AM EST | Winter Weather Advisory | IWX | 31 hr |
| Feb 5, 9:43 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 8, 3:29 AM EST | Winter Weather Advisory | IWX | 18 hr |
| Feb 8, 12:46 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 10, 2:30 PM EST | Winter Storm Watch | IWX | 23 hr |
| Feb 11, 1:59 PM EST | Winter Weather Advisory | IWX | 41 hr |
| Feb 14, 2:56 PM EST | Winter Weather Advisory | IWX | 22 hr |
| Feb 15, 2:52 PM EST | Winter Weather Advisory | IWX | 28 hr |
| Feb 26, 11:39 PM EST | Dense Fog Advisory | IWX | 6 hr |
| Feb 27, 2:49 PM EST | Wind Advisory | IWX | 28 hr |
| Mar 5, 4:06 AM EST | Wind Advisory | IWX | 22 hr |
| Mar 14, 1:02 AM EDT | High Wind Watch | IWX | 21 hr |
| Mar 14, 9:34 PM EDT | Wind Advisory | IWX | 22 hr |
| Mar 15, 12:57 AM EDT | Mesoscale Discussion | SPC | 63 min |
| Mar 15, 1:18 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 15, 4:16 AM EDT | Severe Thunderstorm Warning | IWX | 29 min |
| Mar 15, 3:48 PM EDT | Severe Thunderstorm Warning | IWX | 27 min |
| Mar 15, 3:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Mar 15, 4:13 PM EDT | Severe Thunderstorm Warning | IWX | 32 min |
| Mar 19, 6:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 19, 8:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Mar 19, 9:05 PM EDT | Special Weather Statement | IWX | 55 min |
| Mar 19, 10:44 PM EDT | Special Weather Statement | IWX | 61 min |
| Mar 28, 1:32 PM EDT | Areal Flood Advisory | IWX | 58 min |
| Mar 30, 2:13 PM EDT | Tornado Watch | SPC | 5 hr |
| Mar 30, 3:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Mar 30, 5:05 PM EDT | Severe Thunderstorm Warning | IWX | 55 min |
| Mar 30, 5:06 PM EDT | Tornado Warning | IWX | 24 min |
| Mar 30, 5:17 PM EDT | Tornado Warning | IWX | 28 min |
| Mar 30, 5:34 PM EDT | Severe Thunderstorm Warning | IWX | 56 min |
| Apr 2, 9:31 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 2, 11:03 AM EDT | River Flood Warning | IWX | 21 days |
| Apr 2, 2:14 PM EDT | Flood Watch | IWX | 3 days |
| Apr 2, 4:17 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 2, 8:15 PM EDT | Severe Thunderstorm Warning | IWX | 61 min |
| Apr 2, 10:19 PM EDT | Areal Flood Warning | IWX | 6 hr |
| May 1, 4:14 AM EDT | Special Weather Statement | IWX | 46 min |
| May 15, 7:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 16, 7:23 PM EDT | Blowing Dust Advisory | IWX | 3 hr |
| May 16, 7:52 PM EDT | Severe Thunderstorm Warning | IWX | 53 min |
| May 20, 10:59 PM EDT | Special Weather Statement | IWX | 46 min |
| Jun 4, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 7, 3:25 AM EDT | Dense Fog Advisory | IWX | 6 hr |
| Jun 9, 2:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 9, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 18, 1:01 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 18, 3:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 5:36 PM EDT | Special Weather Statement | IWX | 39 min |
| Jun 18, 5:42 PM EDT | Severe Thunderstorm Warning | IWX | 33 min |
| Jun 18, 6:05 PM EDT | Severe Thunderstorm Warning | IWX | 40 min |
| Jun 20, 1:11 AM EDT | Extreme Heat Watch | IWX | 50 hr |
| Jun 21, 4:02 AM EDT | Heat Advisory | IWX | 23 hr |
| Jun 22, 3:30 AM EDT | Extreme Heat Warning | IWX | 65 hr |
| Jun 24, 1:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 25, 2:43 AM EDT | Heat Advisory | IWX | 17 hr |
| Jun 26, 3:42 AM EDT | Heat Advisory | IWX | 16 hr |
| Jun 26, 2:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 27, 3:09 AM EDT | Heat Advisory | IWX | 16 hr |
| Jun 27, 1:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 27, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 30, 12:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 12, 12:42 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 16, 5:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 16, 7:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 16, 8:15 PM EDT | Special Weather Statement | IWX | 45 min |
| Jul 19, 5:48 PM EDT | Areal Flood Advisory | IWX | 117 min |
| Jul 23, 2:30 AM EDT | Heat Advisory | IWX | 42 hr |
| Jul 24, 3:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 25, 6:37 AM EDT | Special Weather Statement | IWX | 23 min |
| Jul 26, 5:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 27, 1:44 AM EDT | Heat Advisory | IWX | 19 hr |
| Jul 27, 2:24 PM EDT | Heat Advisory | IWX | 31 hr |
| Jul 28, 4:31 PM EDT | Special Weather Statement | IWX | 44 min |
| Jul 29, 12:27 AM EDT | Heat Advisory | IWX | 21 hr |
| Jul 30, 6:50 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jul 30, 7:22 PM EDT | Special Weather Statement | IWX | 23 min |
| Aug 12, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 22, 11:40 PM EDT | Dense Fog Advisory | IWX | 10 hr |
| Sep 23, 4:22 PM EDT | Special Weather Statement | IWX | 38 min |
| Sep 23, 4:52 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Sep 26, 1:51 AM EDT | Dense Fog Advisory | IWX | 8 hr |
| Oct 8, 1:52 PM EDT | Frost Advisory | IWX | 19 hr |
| Oct 9, 1:27 PM EDT | Frost Advisory | IWX | 20 hr |
| Oct 13, 5:06 AM EDT | Dense Fog Advisory | IWX | 6 hr |
| Oct 23, 2:12 AM EDT | Frost Advisory | IWX | 31 hr |
| Oct 24, 1:23 PM EDT | Freeze Warning | IWX | 20 hr |
| Nov 25, 10:30 AM EST | Wind Advisory | IWX | 39 hr |
| Nov 27, 2:40 PM EST | Winter Storm Watch | IWX | 22 hr |
| Nov 28, 1:01 PM EST | Winter Storm Warning | IWX | 54 hr |
| Nov 29, 3:16 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 1, 3:14 AM EST | Winter Weather Advisory | IWX | 28 hr |
| Dec 27, 1:44 PM EST | Wind Advisory | IWX | 52 hr |
| Dec 27, 11:49 PM EST | Dense Fog Advisory | IWX | 5 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 archive20242026
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.