Alert archive / Indiana / Decatur County
Weather alerts in Decatur County, Indiana, 2016
95 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Decatur County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 95
- Warnings
- 20
- Watches
- 16
- Advisories
- 28
- Busiest month
- April22 alerts
- Busiest day
- April 26, 20166 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Decatur County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 5 | 44% | 2 | 100% | 19 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 100% | 101 min |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Indianapolis, IN: tornado warnings | 53 | 10 | 81% | 19 | 74% | 18 min |
| NWS Indianapolis, IN: severe thunderstorm warnings | 143 | 73 | 49% | 225 | 64% | 19 min |
| NWS Indianapolis, IN: flash flood warnings | 22 | 12 | 45% | 26 | 100% | 73 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 9, 4:00 PM EST | Winter Weather Advisory | IND | 18 hr |
| Jan 11, 3:51 PM EST | Winter Weather Advisory | IND | 23 hr |
| Jan 17, 3:55 AM EST | Wind Chill Advisory | IND | 32 hr |
| Jan 19, 4:11 AM EST | Winter Weather Advisory | IND | 29 hr |
| Feb 13, 3:58 PM EST | Winter Weather Advisory | IND | 35 hr |
| Feb 15, 8:41 AM EST | Dense Fog Advisory | IND | 3 hr |
| Feb 18, 2:44 PM EST | Wind Advisory | IND | 28 hr |
| Feb 21, 2:33 AM EST | Areal Flood Advisory | IND | 7 hr |
| Feb 24, 7:17 AM EST | Areal Flood Advisory | IND | 5 hr |
| Feb 28, 5:03 AM EST | Wind Advisory | IND | 14 hr |
| Mar 10, 12:19 AM EST | Dense Fog Advisory | IND | 5 hr |
| Mar 24, 1:54 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 25, 3:23 PM EDT | Frost Advisory | IND | 18 hr |
| Mar 27, 3:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 4:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 27, 6:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 8:47 PM EDT | Severe Thunderstorm Warning | IND | 58 min |
| Mar 28, 3:45 PM EDT | Frost Advisory | IND | 17 hr |
| Mar 31, 6:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 1, 2:29 PM EDT | Freeze Watch | IND | 13 hr |
| Apr 1, 2:29 PM EDT | Wind Advisory | IND | 26 hr |
| Apr 2, 3:45 AM EDT | Freeze Warning | IND | 29 hr |
| Apr 2, 4:33 PM EDT | High Wind Warning | IND | 3 hr |
| Apr 3, 3:20 PM EDT | Freeze Watch | IND | 13 hr |
| Apr 4, 3:50 AM EDT | Freeze Warning | IND | 29 hr |
| Apr 6, 8:59 AM EDT | Wind Advisory | IND | 11 hr |
| Apr 7, 3:44 AM EDT | Freeze Watch | IND | 12 hr |
| Apr 7, 3:26 PM EDT | Freeze Watch | IND | 12 hr |
| Apr 7, 3:26 PM EDT | Freeze Warning | IND | 18 hr |
| Apr 8, 3:34 AM EDT | Freeze Warning | IND | 31 hr |
| Apr 8, 4:12 PM EDT | Freeze Watch | IND | 11 hr |
| Apr 9, 3:40 AM EDT | Freeze Warning | IND | 28 hr |
| Apr 12, 3:36 PM EDT | Freeze Warning | IND | 17 hr |
| Apr 26, 1:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 26, 3:17 PM EDT | Special Weather Statement | IND | 43 min |
| Apr 26, 3:41 PM EDT | Severe Thunderstorm Warning | IND | 34 min |
| Apr 26, 4:03 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 26, 5:51 PM EDT | Severe Thunderstorm Warning | IND | 24 min |
| Apr 26, 6:13 PM EDT | Severe Thunderstorm Warning | IND | 32 min |
| Apr 26, 8:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Apr 28, 3:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 1, 1:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 6:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 1, 7:12 PM EDT | Special Weather Statement | IND | 48 min |
| May 1, 7:58 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 1, 9:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 15, 12:41 PM EDT | Frost Advisory | IND | 19 hr |
| Jun 1, 4:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 3, 4:10 AM EDT | Dense Fog Advisory | IND | 5 hr |
| Jun 6, 3:11 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 15, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 15, 4:45 PM EDT | Severe Thunderstorm Warning | IND | 30 min |
| Jun 15, 6:23 PM EDT | Severe Thunderstorm Warning | IND | 23 min |
| Jun 15, 7:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 22, 10:33 PM EDT | Tornado Watch | SPC | 8 hr |
| Jun 23, 12:51 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 23, 4:36 AM EDT | Mesoscale Discussion | SPC | 24 min |
| Jul 3, 3:44 AM EDT | Flash Flood Watch | IND | 19 hr |
| Jul 3, 10:59 PM EDT | Flash Flood Watch | IND | 16 hr |
| Jul 8, 10:08 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 8, 11:40 AM EDT | Severe Thunderstorm Warning | IND | 35 min |
| Jul 13, 3:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 13, 4:16 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 13, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 13, 7:28 PM EDT | Severe Thunderstorm Warning | IND | 32 min |
| Jul 13, 9:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 1:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 18, 7:36 AM EDT | Areal Flood Advisory | IND | 4 hr |
| Jul 20, 2:53 PM EDT | Heat Advisory | IND | 4 days |
| Jul 26, 10:06 AM EDT | Areal Flood Advisory | IND | 4 hr |
| Jul 26, 1:02 PM EDT | Areal Flood Warning | IND | 6 hr |
| Jul 26, 1:15 PM EDT | Flash Flood Warning | IND | 6 hr |
| Aug 10, 4:30 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Aug 13, 3:59 AM EDT | Flash Flood Watch | IND | 3 days |
| Aug 15, 4:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 16, 12:40 AM EDT | Special Weather Statement | IND | 35 min |
| Aug 18, 6:36 AM EDT | Dense Fog Advisory | IND | 3 hr |
| Aug 20, 5:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 24, 2:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 24, 3:10 PM EDT | Tornado Watch | SPC | 8 hr |
| Aug 24, 4:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 24, 8:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 26, 9:05 AM EDT | Severe Thunderstorm Warning | IND | 40 min |
| Sep 8, 2:42 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 8, 9:49 PM EDT | Flash Flood Warning | IND | 3 hr |
| Sep 9, 12:42 AM EDT | Areal Flood Warning | IND | 6 hr |
| Sep 10, 2:38 PM EDT | Special Weather Statement | IND | 37 min |
| Oct 3, 4:12 AM EDT | Dense Fog Advisory | IND | 5 hr |
| Oct 19, 2:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 19, 4:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 21, 2:37 PM EDT | Frost Advisory | IND | 18 hr |
| Dec 14, 4:59 AM EST | Wind Chill Advisory | IND | 30 hr |
| Dec 16, 3:20 PM EST | Winter Weather Advisory | IND | 18 hr |
| Dec 17, 3:57 AM EST | Winter Weather Advisory | IND | 32 hr |
| Dec 25, 7:02 PM EST | Dense Fog Advisory | IND | 8 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 | 9 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 3 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 5 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 4 |
| 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 archive20152017
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.