Alert archive / Indiana / DeKalb County
Weather alerts in DeKalb County, Indiana, 2023
84 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 84
- Warnings
- 20
- Watches
- 14
- Advisories
- 24
- Busiest month
- July29 alerts
- Busiest day
- July 29, 20237 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
DeKalb County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 8 | 27% | 2 | 100% | 27 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 22 | 6 | 73% | 32 | 59% | 11 min |
| NWS Northern Indiana: severe thunderstorm warnings | 125 | 68 | 46% | 348 | 58% | 24 min |
| NWS Northern Indiana: flash flood warnings | 4 | 2 | 50% | 9 | 33% | 47 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 1, 10:16 PM EST | Dense Fog Advisory | IWX | 14 hr |
| Jan 2, 4:41 PM EST | Dense Fog Advisory | IWX | 12 hr |
| Jan 11, 10:10 PM EST | Dense Fog Advisory | IWX | 10 hr |
| Jan 19, 3:56 PM EST | Special Weather Statement | IWX | 49 min |
| Jan 23, 3:48 AM EST | Winter Storm Watch | IWX | 24 hr |
| Jan 24, 3:44 AM EST | Winter Storm Warning | IWX | 40 hr |
| Jan 25, 10:14 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 7, 2:30 PM EST | High Wind Watch | IWX | 24 hr |
| Feb 8, 2:26 PM EST | Wind Advisory | IWX | 29 hr |
| Feb 14, 3:20 AM EST | Wind Advisory | IWX | 36 hr |
| Feb 22, 3:42 PM EST | Areal Flood Advisory | IWX | 5 hr |
| Feb 23, 3:05 AM EST | Dense Fog Advisory | IWX | 8 hr |
| Feb 23, 11:58 AM EST | River Flood Warning | IWX | 17 days |
| Feb 27, 2:41 PM EST | Special Weather Statement | IWX | 34 min |
| Mar 2, 4:20 AM EST | Winter Storm Watch | IWX | 18 hr |
| Mar 2, 10:21 PM EST | Winter Storm Warning | IWX | 26 hr |
| Mar 3, 5:25 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 5, 7:59 AM EST | Dense Fog Advisory | IWX | 2 hr |
| Mar 9, 3:22 AM EST | Winter Weather Advisory | IWX | 32 hr |
| Mar 31, 4:53 AM EDT | Wind Advisory | IWX | 36 hr |
| Mar 31, 7:59 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 31, 11:18 PM EDT | Severe Thunderstorm Warning | IWX | 42 min |
| Mar 31, 11:49 PM EDT | Severe Thunderstorm Warning | IWX | 56 min |
| Apr 4, 2:02 PM EDT | Wind Advisory | IWX | 28 hr |
| Apr 5, 7:09 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 8:41 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 5, 10:57 AM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 11, 3:34 AM EDT | Fire Weather Watch | IWX | 24 hr |
| Apr 12, 3:52 AM EDT | Red Flag Warning | IWX | 16 hr |
| Apr 18, 1:35 PM EDT | Freeze Warning | IWX | 18 hr |
| Apr 20, 11:23 PM EDT | Special Weather Statement | IWX | 67 min |
| Apr 23, 3:30 AM EDT | Freeze Warning | IWX | 29 hr |
| Apr 24, 2:23 PM EDT | Frost Advisory | IWX | 18 hr |
| Apr 25, 1:32 PM EDT | Freeze Warning | IWX | 18 hr |
| Apr 26, 11:36 AM EDT | Freeze Warning | IWX | 20 hr |
| May 3, 3:34 PM EDT | Frost Advisory | IWX | 16 hr |
| Jun 15, 4:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 25, 12:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 1:34 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 25, 3:49 PM EDT | Severe Thunderstorm Warning | IWX | 56 min |
| Jun 25, 4:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 25, 4:24 PM EDT | Severe Thunderstorm Warning | IWX | 51 min |
| Jun 25, 8:07 PM EDT | Special Weather Statement | IWX | 53 min |
| Jul 2, 3:50 AM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jul 3, 5:39 AM EDT | Dense Fog Advisory | IWX | 3 hr |
| Jul 12, 8:55 PM EDT | Tornado Watch | SPC | 6 hr |
| Jul 14, 9:17 PM EDT | Special Weather Statement | IWX | 28 min |
| Jul 14, 9:46 PM EDT | Special Weather Statement | IWX | 29 min |
| Jul 20, 2:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 20, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 20, 4:24 PM EDT | Severe Thunderstorm Warning | IWX | 51 min |
| Jul 20, 4:53 PM EDT | Severe Thunderstorm Warning | IWX | 67 min |
| Jul 20, 5:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 26, 3:03 AM EDT | Heat Advisory | IWX | 66 hr |
| Jul 26, 10:24 AM EDT | Heat Advisory | IWX | 50 hr |
| Jul 26, 1:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 26, 2:09 PM EDT | Special Weather Statement | IWX | 51 min |
| Jul 26, 6:33 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 26, 8:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 26, 9:41 PM EDT | Severe Thunderstorm Warning | IWX | 31 min |
| Jul 26, 9:49 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jul 26, 10:01 PM EDT | Severe Thunderstorm Warning | IWX | 44 min |
| Jul 26, 10:26 PM EDT | Special Weather Statement | IWX | 34 min |
| Jul 27, 3:26 AM EDT | Dense Fog Advisory | IWX | 6 hr |
| Jul 28, 6:59 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 28, 8:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 28, 11:25 PM EDT | Special Weather Statement | IWX | 50 min |
| Jul 28, 11:31 PM EDT | Severe Thunderstorm Warning | IWX | 46 min |
| Jul 29, 12:00 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 29, 1:57 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 2:03 AM EDT | Severe Thunderstorm Warning | IWX | 42 min |
| Jul 29, 2:38 AM EDT | Severe Thunderstorm Warning | IWX | 52 min |
| Aug 12, 11:37 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 3:12 AM EDT | Excessive Heat Watch | IWX | 24 hr |
| Aug 23, 3:19 AM EDT | Excessive Heat Warning | IWX | 45 hr |
| Aug 24, 4:03 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Aug 24, 9:48 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 24, 11:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 29, 10:28 PM EDT | Dense Fog Advisory | IWX | 13 hr |
| Sep 30, 2:45 PM EDT | Dense Fog Advisory | IWX | 19 hr |
| Oct 21, 2:52 PM EDT | Freeze Watch | IWX | 24 hr |
| Oct 22, 2:55 PM EDT | Frost Advisory | IWX | 17 hr |
| Dec 23, 9:06 AM EST | Dense Fog Advisory | IWX | 4 hr |
| Dec 23, 5:23 PM EST | Dense Fog Advisory | IWX | 20 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 | 11 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 9 |
| Flooding | |
| River Flood Warning | 1 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.