Alert archive / Indiana / DeKalb County
Weather alerts in DeKalb County, Indiana, 2018
91 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 91
- Warnings
- 19
- Watches
- 9
- Advisories
- 35
- Busiest month
- August14 alerts
- Busiest day
- July 20, 20184 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, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 1 | 86% | 7 | 100% | 9 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 6 | 2 | 67% | 6 | 33% | 2 min |
| NWS Northern Indiana: severe thunderstorm warnings | 93 | 34 | 63% | 187 | 41% | 19 min |
| NWS Northern Indiana: flash flood warnings | 9 | 2 | 78% | 4 | 75% | 59 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, 3:57 AM EST | Wind Chill Warning | IWX | 33 hr |
| Jan 2, 3:06 PM EST | Wind Chill Advisory | IWX | 16 hr |
| Jan 7, 3:55 AM EST | Winter Weather Advisory | IWX | 31 hr |
| Jan 7, 7:16 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 10, 10:11 AM EST | Dense Fog Advisory | IWX | 12 hr |
| Jan 11, 3:02 PM EST | Winter Weather Advisory | IWX | 27 hr |
| Jan 12, 3:04 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 14, 3:16 PM EST | Winter Weather Advisory | IWX | 34 hr |
| Jan 21, 5:01 AM EST | Dense Fog Advisory | IWX | 26 hr |
| Feb 5, 3:28 AM EST | Winter Weather Advisory | IWX | 23 hr |
| Feb 6, 2:45 PM EST | Winter Weather Advisory | IWX | 19 hr |
| Feb 7, 4:06 AM EST | Winter Storm Watch | IWX | 35 hr |
| Feb 8, 3:02 PM EST | Winter Weather Advisory | IWX | 23 hr |
| Feb 10, 2:52 PM EST | Winter Weather Advisory | IWX | 22 hr |
| Feb 10, 11:31 PM EST | Winter Weather Advisory | IWX | 13 hr |
| Feb 14, 6:51 PM EST | Dense Fog Advisory | IWX | 27 hr |
| Feb 19, 1:10 AM EST | Flood Watch | IWX | 63 hr |
| Feb 19, 10:39 AM EST | River Flood Warning | IWX | 16 days |
| Feb 25, 1:35 AM EST | Wind Advisory | IWX | 8 hr |
| Mar 31, 4:11 AM EDT | Wind Advisory | IWX | 15 hr |
| Apr 4, 3:41 AM EDT | Wind Advisory | IWX | 7 hr |
| Apr 4, 5:31 AM EDT | Special Weather Statement | IWX | 59 min |
| Apr 14, 10:21 AM EDT | River Flood Watch | IWX | 25 hr |
| Apr 15, 11:20 AM EDT | River Flood Warning | IWX | 5 days |
| Apr 30, 6:21 PM EDT | Red Flag Warning | IWX | 26 hr |
| May 2, 9:49 PM EDT | Severe Thunderstorm Warning | IWX | 24 min |
| May 2, 9:53 PM EDT | Flash Flood Watch | IWX | 11 hr |
| May 3, 1:54 PM EDT | River Flood Warning | IWX | 6 days |
| May 3, 9:48 PM EDT | Wind Advisory | IWX | 18 hr |
| May 9, 10:51 PM EDT | Special Weather Statement | IWX | 39 min |
| May 14, 7:38 AM EDT | Special Weather Statement | IWX | 52 min |
| May 14, 11:50 AM EDT | River Flood Warning | IWX | 7 days |
| May 14, 10:28 PM EDT | Special Weather Statement | IWX | 32 min |
| May 14, 10:43 PM EDT | Severe Thunderstorm Warning | IWX | 47 min |
| May 14, 11:00 PM EDT | Severe Thunderstorm Warning | IWX | 45 min |
| May 22, 3:08 AM EDT | Dense Fog Advisory | IWX | 7 hr |
| May 31, 3:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 31, 8:36 PM EDT | Severe Thunderstorm Warning | IWX | 39 min |
| May 31, 8:50 PM EDT | Special Weather Statement | IWX | 25 min |
| Jun 9, 8:42 PM EDT | Areal Flood Warning | IWX | 3 hr |
| Jun 10, 10:22 AM EDT | River Flood Warning | IWX | 5 days |
| Jun 16, 3:34 PM EDT | Heat Advisory | IWX | 52 hr |
| Jun 18, 9:46 PM EDT | Special Weather Statement | IWX | 44 min |
| Jun 19, 3:53 PM EDT | Severe Thunderstorm Warning | IWX | 52 min |
| Jun 21, 6:18 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jun 27, 3:28 PM EDT | Excessive Heat Watch | IWX | 36 hr |
| Jun 29, 2:58 AM EDT | Excessive Heat Warning | IWX | 65 hr |
| Jul 3, 2:26 PM EDT | Heat Advisory | IWX | 37 hr |
| Jul 16, 10:50 AM EDT | Special Weather Statement | IWX | 25 min |
| Jul 16, 1:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 1:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 20, 2:12 PM EDT | Tornado Watch | SPC | 3 hr |
| Jul 20, 3:45 PM EDT | Special Weather Statement | IWX | 45 min |
| Jul 20, 3:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 26, 1:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 6, 1:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 6, 9:05 PM EDT | Severe Thunderstorm Warning | IWX | 40 min |
| Aug 8, 2:37 PM EDT | Special Weather Statement | IWX | 38 min |
| Aug 9, 7:54 PM EDT | Special Weather Statement | IWX | 36 min |
| Aug 9, 8:07 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Aug 9, 8:28 PM EDT | Special Weather Statement | IWX | 47 min |
| Aug 9, 9:59 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Aug 11, 4:34 AM EDT | Dense Fog Advisory | IWX | 4 hr |
| Aug 11, 6:55 PM EDT | Special Weather Statement | IWX | 50 min |
| Aug 11, 7:34 PM EDT | Severe Thunderstorm Warning | IWX | 41 min |
| Aug 18, 3:47 AM EDT | Dense Fog Advisory | IWX | 5 hr |
| Aug 25, 7:14 AM EDT | Special Weather Statement | IWX | 31 min |
| Aug 25, 7:54 AM EDT | Special Weather Statement | IWX | 21 min |
| Sep 11, 2:28 AM EDT | Dense Fog Advisory | IWX | 6 hr |
| Sep 14, 1:38 AM EDT | Dense Fog Advisory | IWX | 9 hr |
| Sep 20, 4:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Sep 25, 6:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 25, 8:45 PM EDT | Severe Thunderstorm Watch | SPC | 87 min |
| Oct 5, 6:20 PM EDT | Special Weather Statement | IWX | 3 hr |
| Oct 5, 9:20 PM EDT | Special Weather Statement | IWX | 3 hr |
| Oct 6, 1:39 AM EDT | Special Weather Statement | IWX | 36 min |
| Oct 6, 2:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 6, 5:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Oct 8, 12:12 AM EDT | Dense Fog Advisory | IWX | 11 hr |
| Oct 12, 2:55 PM EDT | Frost Advisory | IWX | 18 hr |
| Oct 15, 2:17 PM EDT | Freeze Warning | IWX | 19 hr |
| Oct 17, 3:02 AM EDT | Freeze Warning | IWX | 30 hr |
| Oct 20, 10:57 AM EDT | Wind Advisory | IWX | 9 hr |
| Nov 15, 1:03 AM EST | Winter Weather Advisory | IWX | 15 hr |
| Nov 30, 1:10 AM EST | Freezing Fog Advisory | IWX | 10 hr |
| Nov 30, 8:17 PM EST | Freezing Fog Advisory | IWX | 10 hr |
| Dec 2, 1:50 AM EST | River Flood Warning | IWX | 5 days |
| Dec 14, 10:08 PM EST | Dense Fog Advisory | IWX | 7 hr |
| Dec 20, 8:41 PM EST | Dense Fog Advisory | IWX | 5 hr |
| Dec 29, 9:45 AM EST | Winter Weather Advisory | IWX | 2 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 archive20172019
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.