Alert archive / Indiana / Decatur County
Weather alerts in Decatur County, Indiana, 2015
95 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 95
- Warnings
- 23
- Watches
- 18
- Advisories
- 25
- Busiest month
- July24 alerts
- Busiest day
- April 8, 20157 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, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 7 | 22% | 4 | 25% | 38 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Indianapolis, IN: tornado warnings | 18 | 2 | 89% | 7 | 43% | 9 min |
| NWS Indianapolis, IN: severe thunderstorm warnings | 141 | 59 | 58% | 209 | 62% | 21 min |
| NWS Indianapolis, IN: flash flood warnings | 48 | 13 | 73% | 35 | 77% | 72 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 5, 3:47 AM EST | Winter Weather Advisory | IND | 30 hr |
| Jan 6, 3:43 AM EST | Wind Chill Advisory | IND | 57 hr |
| Jan 9, 3:23 AM EST | Wind Chill Advisory | IND | 28 hr |
| Jan 10, 4:08 PM EST | Winter Weather Advisory | IND | 44 hr |
| Jan 11, 2:08 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 14, 3:49 AM EST | Wind Chill Advisory | IND | 30 hr |
| Feb 14, 11:54 AM EST | Wind Advisory | IND | 7 hr |
| Feb 15, 4:08 AM EST | Winter Weather Advisory | IND | 41 hr |
| Feb 18, 3:39 AM EST | Wind Chill Advisory | IND | 55 hr |
| Feb 18, 3:39 AM EST | Winter Weather Advisory | IND | 6 hr |
| Feb 18, 12:13 PM EST | Winter Weather Advisory | IND | 6 hr |
| Feb 20, 4:13 AM EST | Winter Storm Warning | IND | 35 hr |
| Feb 22, 3:22 AM EST | Wind Chill Advisory | IND | 30 hr |
| Feb 28, 4:03 AM EST | Winter Weather Advisory | IND | 39 hr |
| Mar 2, 3:13 PM EST | Winter Weather Advisory | IND | 12 hr |
| Mar 3, 3:38 AM EST | Freezing Rain Advisory | IND | 10 hr |
| Mar 4, 3:37 AM EST | Winter Weather Advisory | IND | 24 hr |
| Mar 10, 7:53 PM EDT | Dense Fog Advisory | IND | 16 hr |
| Mar 12, 3:27 PM EDT | Flood Watch | IND | 47 hr |
| Apr 2, 3:45 PM EDT | Flood Watch | IND | 28 hr |
| Apr 2, 8:32 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Apr 8, 8:41 AM EDT | Mesoscale Discussion | SPC | 64 min |
| Apr 8, 8:43 AM EDT | Areal Flood Warning | IND | 6 hr |
| Apr 8, 9:11 AM EDT | Severe Thunderstorm Warning | IND | 49 min |
| Apr 8, 9:56 AM EDT | Severe Thunderstorm Warning | IND | 49 min |
| Apr 8, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 8, 2:25 PM EDT | Flash Flood Watch | IND | 37 hr |
| Apr 8, 3:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 9, 11:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 10, 1:37 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 10, 1:39 AM EDT | Areal Flood Advisory | IND | 7 hr |
| Apr 17, 2:28 AM EDT | Dense Fog Advisory | IND | 7 hr |
| Apr 22, 3:28 PM EDT | Freeze Warning | IND | 18 hr |
| Apr 23, 4:01 AM EDT | Frost Advisory | IND | 29 hr |
| Apr 23, 4:01 AM EDT | Freeze Warning | IND | 29 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, 4:39 PM EDT | Mesoscale Discussion | SPC | 66 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, 1:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 30, 5:55 PM EDT | Special Weather Statement | IND | 35 min |
| May 30, 7:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 8, 10:47 PM EDT | Special Weather Statement | IND | 43 min |
| Jun 12, 6:12 PM EDT | Severe Thunderstorm Warning | IND | 33 min |
| Jun 19, 4:02 AM EDT | Flash Flood Watch | IND | 31 hr |
| Jun 20, 8:01 AM EDT | Areal Flood Warning | IND | 15 hr |
| Jun 21, 2:08 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 25, 7:29 AM EDT | Special Weather Statement | IND | 31 min |
| Jun 25, 7:54 AM EDT | Special Weather Statement | IND | 51 min |
| Jun 26, 3:17 AM EDT | Flash Flood Watch | IND | 24 hr |
| Jun 27, 12:07 PM EDT | River Flood Warning | IND | 14 hr |
| Jun 30, 12:36 PM EDT | Special Weather Statement | IND | 24 min |
| Jun 30, 2:02 PM EDT | Severe Thunderstorm Warning | IND | 43 min |
| Jun 30, 6:06 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Jun 30, 9:25 PM EDT | Special Weather Statement | IND | 35 min |
| Jul 7, 2:10 PM EDT | Areal Flood Advisory | IND | 3 hr |
| Jul 8, 3:33 AM EDT | Flash Flood Watch | IND | 27 hr |
| Jul 12, 3:48 AM EDT | Severe Thunderstorm Warning | IND | 42 min |
| Jul 12, 10:51 AM EDT | Areal Flood Warning | IND | 6 hr |
| Jul 12, 3:25 PM EDT | Flash Flood Watch | IND | 24 hr |
| Jul 13, 10:17 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 13, 12:05 PM EDT | Areal Flood Advisory | IND | 2 hr |
| Jul 13, 12:21 PM EDT | Severe Thunderstorm Warning | IND | 54 min |
| Jul 13, 1:10 PM EDT | Severe Thunderstorm Warning | IND | 54 min |
| Jul 13, 3:47 PM EDT | Flash Flood Watch | IND | 23 hr |
| Jul 13, 8:22 PM EDT | Tornado Watch | SPC | 7 hr |
| Jul 14, 12:47 AM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 14, 2:06 AM EDT | Areal Flood Warning | IND | 3 hr |
| Jul 14, 5:01 AM EDT | Areal Flood Warning | IND | 4 hr |
| Jul 17, 3:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jul 17, 3:47 PM EDT | Heat Advisory | IND | 27 hr |
| Jul 17, 5:14 PM EDT | Severe Thunderstorm Warning | IND | 46 min |
| Jul 17, 6:05 PM EDT | Special Weather Statement | ILN | 25 min |
| Jul 17, 6:54 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 8:15 PM EDT | Flash Flood Warning | IND | 3 hr |
| Jul 17, 11:14 PM EDT | Areal Flood Warning | IND | 9 hr |
| Jul 26, 4:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 4:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 3, 3:06 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 3:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Sep 5, 4:44 PM EDT | Special Weather Statement | IND | 46 min |
| Sep 5, 4:59 PM EDT | Special Weather Statement | IND | 46 min |
| Oct 15, 3:42 AM EDT | Freeze Watch | IND | 34 hr |
| Oct 15, 3:42 AM EDT | Freeze Watch | IND | 54 hr |
| Oct 16, 1:46 PM EDT | Freeze Warning | IND | 20 hr |
| Oct 17, 10:01 AM EDT | Freeze Warning | IND | 24 hr |
| Nov 18, 10:05 AM EST | Wind Advisory | IND | 7 hr |
| Dec 4, 7:32 PM EST | Freezing Fog Advisory | IND | 16 hr |
| Dec 23, 1:06 PM EST | Mesoscale Discussion | SPC | 84 min |
| Dec 23, 1:28 PM EST | Tornado Watch | SPC | 8 hr |
| Dec 23, 3:16 PM EST | Mesoscale Discussion | SPC | 59 min |
| Dec 23, 3:57 PM EST | Severe Thunderstorm Warning | IND | 33 min |
| Dec 25, 3:07 PM EST | Flash Flood Watch | IND | 3 days |
| Dec 29, 10:23 AM EST | River Flood Warning | IND | 24 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.