Alert archive / Indiana / DeKalb County
Weather alerts in DeKalb County, Indiana, 2015
127 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 127
- Warnings
- 28
- Watches
- 18
- Advisories
- 38
- Busiest month
- June31 alerts
- Busiest day
- June 18, 20156 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, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 7 | 30% | 6 | 100% | 16 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 2 | 0 | 100% | 2 | 0% | |
| NWS Northern Indiana: severe thunderstorm warnings | 107 | 71 | 34% | 257 | 56% | 20 min |
| NWS Northern Indiana: flash flood warnings | 17 | 5 | 71% | 18 | 89% | 70 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 2, 3:59 PM EST | Winter Weather Advisory | IWX | 24 hr |
| Jan 4, 3:41 PM EST | Winter Storm Watch | IWX | 12 hr |
| Jan 6, 4:14 AM EST | Wind Chill Warning | IWX | 56 hr |
| Jan 6, 4:14 AM EST | Wind Chill Advisory | IWX | 36 hr |
| Jan 7, 4:00 PM EST | Winter Weather Advisory | IWX | 48 hr |
| Jan 9, 4:00 AM EST | Wind Chill Advisory | IWX | 31 hr |
| Jan 21, 4:50 AM EST | Winter Weather Advisory | IWX | 6 hr |
| Jan 28, 3:51 PM EST | Freezing Rain Advisory | IWX | 17 hr |
| Jan 30, 11:35 AM EST | Winter Storm Watch | IWX | 20 hr |
| Jan 31, 4:08 AM EST | Winter Storm Warning | IWX | 50 hr |
| Feb 1, 8:43 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 1, 2:35 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 4, 3:53 AM EST | Winter Weather Advisory | IWX | 17 hr |
| Feb 13, 3:49 PM EST | Winter Weather Advisory | IWX | 33 hr |
| Feb 14, 4:07 AM EST | Wind Chill Advisory | IWX | 31 hr |
| Feb 15, 3:52 PM EST | Wind Chill Advisory | IWX | 18 hr |
| Feb 18, 3:56 AM EST | Wind Chill Advisory | IWX | 55 hr |
| Feb 18, 3:56 AM EST | Winter Weather Advisory | IWX | 39 hr |
| Feb 22, 4:05 AM EST | Wind Chill Advisory | IWX | 29 hr |
| Feb 22, 12:20 PM EST | Special Weather Statement | IWX | 55 min |
| Feb 23, 7:55 PM EST | Wind Chill Advisory | IWX | 14 hr |
| Mar 2, 3:02 PM EST | Winter Weather Advisory | IWX | 25 hr |
| Mar 10, 6:47 PM EDT | Dense Fog Advisory | IWX | 18 hr |
| Mar 14, 12:18 AM EDT | Dense Fog Advisory | IWX | 9 hr |
| Apr 2, 7:27 AM EDT | Special Weather Statement | IWX | 33 min |
| Apr 2, 11:27 AM EDT | Special Weather Statement | IWX | 63 min |
| Apr 3, 3:09 AM EDT | Dense Fog Advisory | IWX | 7 hr |
| Apr 9, 9:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 10, 3:56 AM EDT | Wind Advisory | IWX | 16 hr |
| Apr 10, 7:57 PM EDT | Special Weather Statement | IWX | 63 min |
| Apr 15, 11:54 AM EDT | Red Flag Warning | IWX | 8 hr |
| Apr 21, 3:50 AM EDT | Wind Advisory | IWX | 16 hr |
| Apr 22, 3:39 PM EDT | Freeze Warning | IWX | 17 hr |
| Apr 23, 2:52 PM EDT | Freeze Warning | IWX | 18 hr |
| May 6, 5:31 AM EDT | Dense Fog Advisory | IWX | 4 hr |
| May 11, 12:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 11, 1:14 PM EDT | Tornado Watch | SPC | 7 hr |
| May 11, 1:41 PM EDT | Severe Thunderstorm Warning | IWX | 34 min |
| May 26, 1:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 2:23 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 27, 12:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 27, 1:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 1:27 PM EDT | Severe Thunderstorm Warning | IWX | 33 min |
| May 27, 1:59 PM EDT | Severe Thunderstorm Warning | IWX | 46 min |
| May 27, 3:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 30, 2:18 PM EDT | Flood Watch | IWX | 23 hr |
| May 30, 7:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 8, 12:22 AM EDT | Special Weather Statement | IWX | 38 min |
| Jun 10, 4:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 10, 9:39 PM EDT | Severe Thunderstorm Warning | IWX | 36 min |
| Jun 10, 9:59 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jun 11, 4:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 13, 6:37 PM EDT | Severe Thunderstorm Warning | IWX | 38 min |
| Jun 14, 1:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 14, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 14, 4:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 11:48 AM EDT | Flash Flood Watch | IWX | 14 hr |
| Jun 15, 3:28 PM EDT | Special Weather Statement | IWX | 47 min |
| Jun 15, 4:02 PM EDT | Severe Thunderstorm Warning | IWX | 43 min |
| Jun 15, 11:00 PM EDT | River Flood Warning | IWX | 8 days |
| Jun 18, 3:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 4:26 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 4:57 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jun 18, 5:31 PM EDT | Special Weather Statement | IWX | 29 min |
| Jun 18, 5:40 PM EDT | Severe Thunderstorm Warning | IWX | 37 min |
| Jun 18, 6:02 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jun 22, 12:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 3:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 22, 8:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 22, 9:17 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 22, 11:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jun 25, 5:51 PM EDT | Severe Thunderstorm Warning | IWX | 39 min |
| Jun 25, 6:31 PM EDT | Special Weather Statement | IWX | 44 min |
| Jun 27, 9:07 AM EDT | Areal Flood Warning | IWX | 3 hr |
| Jun 27, 11:58 AM EDT | Areal Flood Warning | IWX | 6 hr |
| Jun 27, 2:31 PM EDT | Areal Flood Warning | IWX | 6 hr |
| Jun 27, 3:48 PM EDT | River Flood Warning | IWX | 8 days |
| Jun 27, 4:16 PM EDT | Areal Flood Warning | IWX | 45 hr |
| Jul 8, 3:35 AM EDT | Flood Watch | IWX | 27 hr |
| Jul 13, 9:43 AM EDT | Special Weather Statement | IWX | 47 min |
| Jul 13, 9:23 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jul 13, 11:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jul 17, 3:20 PM EDT | Heat Advisory | IWX | 29 hr |
| Jul 17, 5:58 PM EDT | Special Weather Statement | IWX | 47 min |
| Jul 17, 6:24 PM EDT | Areal Flood Advisory | IWX | 3 hr |
| Jul 17, 6:54 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 18, 1:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 4:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 18, 4:59 PM EDT | Tornado Watch | SPC | 5 hr |
| Jul 18, 6:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 18, 7:57 PM EDT | Severe Thunderstorm Warning | IWX | 63 min |
| Jul 18, 8:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 19, 12:06 AM EDT | River Flood Warning | IWX | 7 days |
| Jul 25, 5:52 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 9:30 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 14, 11:25 PM EDT | Severe Thunderstorm Warning | IWX | 27 min |
| Aug 23, 1:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 23, 4:08 PM EDT | Special Weather Statement | IWX | 22 min |
| Aug 23, 4:35 PM EDT | Special Weather Statement | IWX | 55 min |
| Aug 31, 12:52 AM EDT | Dense Fog Advisory | IWX | 8 hr |
| Oct 7, 3:40 AM EDT | Dense Fog Advisory | IWX | 6 hr |
| Oct 15, 3:39 PM EDT | Freeze Watch | IWX | 24 hr |
| Oct 15, 8:45 PM EDT | Special Weather Statement | IWX | 60 min |
| Oct 16, 4:01 AM EDT | Freeze Watch | IWX | 36 hr |
| Oct 16, 3:12 PM EDT | Freeze Warning | IWX | 18 hr |
| Oct 17, 3:47 PM EDT | Freeze Warning | IWX | 17 hr |
| Oct 19, 12:48 PM EDT | Red Flag Warning | IWX | 7 hr |
| Oct 24, 3:09 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Nov 6, 6:13 AM EST | Special Weather Statement | IWX | 32 min |
| Nov 11, 4:05 AM EST | High Wind Watch | IWX | 11 hr |
| Nov 11, 3:27 PM EST | High Wind Warning | IWX | 22 hr |
| Nov 12, 1:54 PM EST | Wind Advisory | IWX | 7 hr |
| Nov 20, 4:03 PM EST | Winter Weather Advisory | IWX | 30 hr |
| Nov 21, 9:19 AM EST | Winter Storm Warning | IWX | 16 hr |
| Nov 21, 9:36 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Nov 24, 6:15 AM EST | Freezing Fog Advisory | IWX | 4 hr |
| Dec 4, 10:37 PM EST | Freezing Fog Advisory | IWX | 13 hr |
| Dec 5, 6:45 PM EST | Freezing Fog Advisory | IWX | 15 hr |
| Dec 7, 3:40 AM EST | Dense Fog Advisory | IWX | 8 hr |
| Dec 23, 2:55 PM EST | Mesoscale Discussion | SPC | 95 min |
| Dec 23, 3:47 PM EST | Wind Advisory | IWX | 12 hr |
| Dec 23, 4:00 PM EST | Special Weather Statement | IWX | 30 min |
| Dec 25, 3:52 PM EST | Flash Flood Watch | IWX | 3 days |
| Dec 27, 4:13 PM EST | Wind Advisory | IWX | 29 hr |
| Dec 27, 4:13 PM EST | Freezing Rain Advisory | IWX | 27 hr |
| Dec 28, 12:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 30, 11:05 AM EST | River Flood Warning | IWX | 38 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 archive20142016
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.