Alert archive / Indiana / Clark County
Weather alerts in Clark County, Indiana, 2018
143 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Clark County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 143
- Warnings
- 46
- Watches
- 21
- Advisories
- 49
- Busiest month
- February22 alerts
- Busiest day
- July 20, 201810 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Clark County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 10 | 41% | 9 | 33% | 9 min |
| Flash flood warnings | 9 | 8 | 11% | 2 | 100% | 137 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Louisville, KY: tornado warnings | 45 | 8 | 82% | 29 | 31% | 10 min |
| NWS Louisville, KY: severe thunderstorm warnings | 349 | 170 | 51% | 529 | 69% | 17 min |
| NWS Louisville, KY: flash flood warnings | 69 | 40 | 42% | 129 | 88% | 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 4, 3:28 PM EST | Wind Chill Advisory | LMK | 20 hr |
| Jan 7, 3:52 AM EST | Winter Weather Advisory | LMK | 33 hr |
| Jan 10, 3:27 PM EST | Winter Storm Watch | LMK | 24 hr |
| Jan 11, 3:03 PM EST | Winter Storm Warning | LMK | 33 hr |
| Jan 12, 3:04 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 12, 8:51 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 14, 3:27 PM EST | Winter Weather Advisory | LMK | 48 hr |
| Jan 15, 4:46 AM EST | Wind Chill Advisory | LMK | 31 hr |
| Jan 27, 10:50 PM EST | Dense Fog Advisory | LMK | 12 hr |
| Feb 4, 8:30 PM EST | Special Weather Statement | LMK | 30 min |
| Feb 6, 3:35 AM EST | Winter Weather Advisory | LMK | 33 hr |
| Feb 6, 10:42 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 17, 11:35 AM EST | River Flood Warning | LMK | 15 days |
| Feb 17, 11:35 AM EST | River Flood Warning | LMK | 15 days |
| Feb 17, 1:31 PM EST | Winter Weather Advisory | LMK | 2 hr |
| Feb 20, 3:08 PM EST | Flood Watch | LMK | 5 days |
| Feb 23, 3:39 AM EST | Flash Flood Warning | LMK | 5 hr |
| Feb 23, 5:08 AM EST | Areal Flood Warning | LMK | 6 hr |
| Feb 23, 6:24 AM EST | Areal Flood Warning | LMK | 6 hr |
| Feb 23, 10:18 AM EST | Areal Flood Warning | LMK | 3 hr |
| Feb 24, 6:06 PM EST | Areal Flood Warning | LMK | 12 hr |
| Feb 24, 6:15 PM EST | Flash Flood Warning | LMK | 4 hr |
| Feb 24, 6:47 PM EST | Flash Flood Warning | LMK | 4 hr |
| Feb 24, 8:35 PM EST | Flash Flood Warning | LMK | 5 hr |
| Feb 24, 9:45 PM EST | Flash Flood Warning | LMK | 3 hr |
| Feb 24, 10:59 PM EST | Flash Flood Warning | LMK | 3 hr |
| Feb 25, 12:47 AM EST | Areal Flood Warning | LMK | 18 hr |
| Feb 25, 1:01 AM EST | Areal Flood Warning | LMK | 6 hr |
| Feb 25, 6:15 AM EST | Areal Flood Warning | LMK | 12 hr |
| Feb 25, 7:00 AM EST | Areal Flood Warning | LMK | 12 hr |
| Feb 25, 5:39 PM EST | Areal Flood Warning | LMK | 24 hr |
| Mar 5, 9:44 PM EST | Wind Advisory | LMK | 21 hr |
| Mar 9, 2:35 AM EST | Winter Weather Advisory | LMK | 27 hr |
| Mar 11, 3:59 AM EDT | Winter Weather Advisory | LMK | 28 hr |
| Mar 13, 3:17 PM EDT | Winter Weather Advisory | LMK | 13 hr |
| Mar 19, 3:34 PM EDT | Winter Weather Advisory | LMK | 52 hr |
| Mar 20, 12:27 PM EDT | Winter Storm Warning | LMK | 25 hr |
| Apr 2, 2:58 PM EDT | Wind Advisory | LMK | 31 hr |
| Apr 2, 9:04 PM EDT | Flash Flood Watch | LMK | 7 hr |
| Apr 3, 12:41 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 3, 1:16 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 3, 4:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Apr 3, 4:19 PM EDT | Severe Thunderstorm Warning | LMK | 26 min |
| Apr 3, 6:27 PM EDT | Special Weather Statement | LMK | 33 min |
| Apr 3, 7:30 PM EDT | Tornado Watch | SPC | 5 hr |
| Apr 3, 7:53 PM EDT | Severe Thunderstorm Warning | LMK | 37 min |
| Apr 4, 11:18 AM EDT | River Flood Warning | LMK | 4 days |
| Apr 4, 11:18 AM EDT | River Flood Warning | LMK | 27 hr |
| Apr 5, 3:32 AM EDT | Winter Storm Watch | LMK | 24 hr |
| Apr 6, 3:30 AM EDT | Winter Weather Advisory | LMK | 32 hr |
| Apr 7, 3:26 AM EDT | Freeze Warning | LMK | 31 hr |
| Apr 10, 3:31 PM EDT | Frost Advisory | LMK | 17 hr |
| Apr 16, 3:22 AM EDT | Freeze Warning | LMK | 31 hr |
| Apr 18, 11:20 AM EDT | Wind Advisory | LMK | 15 hr |
| Apr 19, 3:12 AM EDT | Freeze Warning | LMK | 31 hr |
| Apr 28, 3:11 AM EDT | Frost Advisory | LMK | 29 hr |
| May 4, 4:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 5, 12:36 PM EDT | Special Weather Statement | LMK | 54 min |
| May 6, 7:28 AM EDT | Dense Fog Advisory | LMK | 3 hr |
| May 18, 4:49 PM EDT | Areal Flood Advisory | LMK | 117 min |
| May 21, 4:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 27, 3:06 AM EDT | Special Weather Statement | LMK | 39 min |
| May 28, 3:07 PM EDT | Flash Flood Watch | LMK | 44 hr |
| May 31, 11:31 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 31, 1:52 PM EDT | Severe Thunderstorm Warning | LMK | 38 min |
| May 31, 2:00 PM EDT | Flash Flood Watch | LMK | 15 hr |
| May 31, 2:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 31, 2:24 PM EDT | Special Weather Statement | LMK | 21 min |
| May 31, 2:35 PM EDT | Severe Thunderstorm Warning | LMK | 25 min |
| Jun 1, 1:19 AM EDT | Special Weather Statement | LMK | 56 min |
| Jun 1, 8:00 PM EDT | Special Weather Statement | LMK | 30 min |
| Jun 10, 3:56 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 10, 6:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 12, 3:41 AM EDT | Flash Flood Watch | LMK | 10 hr |
| Jun 12, 2:11 PM EDT | Flash Flood Watch | LMK | 7 hr |
| Jun 12, 2:26 PM EDT | Mesoscale Discussion | SPC | 109 min |
| Jun 26, 10:26 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 26, 12:34 PM EDT | Severe Thunderstorm Warning | LMK | 26 min |
| Jun 26, 12:58 PM EDT | Severe Thunderstorm Warning | LMK | 47 min |
| Jun 26, 1:04 PM EDT | Severe Thunderstorm Warning | LMK | 41 min |
| Jun 26, 1:23 PM EDT | Severe Thunderstorm Warning | LMK | 37 min |
| Jun 26, 1:34 PM EDT | Severe Thunderstorm Warning | LMK | 41 min |
| Jun 29, 3:33 PM EDT | Heat Advisory | LMK | 52 hr |
| Jul 2, 6:45 PM EDT | Special Weather Statement | LMK | 45 min |
| Jul 2, 7:13 PM EDT | Severe Thunderstorm Warning | LMK | 32 min |
| Jul 3, 3:37 AM EDT | Heat Advisory | LMK | 64 hr |
| Jul 3, 2:24 PM EDT | Special Weather Statement | LMK | 21 min |
| Jul 3, 2:40 PM EDT | Areal Flood Advisory | LMK | 2 hr |
| Jul 20, 1:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 20, 1:37 PM EDT | Tornado Watch | SPC | 7 hr |
| Jul 20, 1:53 PM EDT | Severe Thunderstorm Warning | LMK | 37 min |
| Jul 20, 2:18 PM EDT | Special Weather Statement | LMK | 27 min |
| Jul 20, 2:28 PM EDT | Severe Thunderstorm Warning | LMK | 32 min |
| Jul 20, 3:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 20, 6:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jul 20, 7:18 PM EDT | Severe Thunderstorm Warning | LMK | 27 min |
| Jul 20, 7:22 PM EDT | Tornado Watch | SPC | 8 hr |
| Jul 20, 7:45 PM EDT | Severe Thunderstorm Warning | LMK | 15 min |
| Jul 20, 8:35 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Jul 20, 8:53 PM EDT | Flash Flood Warning | LMK | 3 hr |
| Jul 20, 9:32 PM EDT | Severe Thunderstorm Warning | LMK | 28 min |
| Jul 31, 5:15 AM EDT | Areal Flood Advisory | LMK | 3 hr |
| Aug 15, 7:49 PM EDT | Severe Thunderstorm Warning | LMK | 26 min |
| Aug 15, 10:46 PM EDT | Flash Flood Watch | LMK | 17 hr |
| Aug 16, 8:53 AM EDT | Areal Flood Advisory | LMK | 112 min |
| Aug 19, 9:26 PM EDT | Areal Flood Advisory | LMK | 2 hr |
| Aug 20, 6:55 PM EDT | Special Weather Statement | LMK | 20 min |
| Aug 31, 4:50 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Sep 6, 3:40 PM EDT | Flash Flood Watch | LMK | 3 days |
| Sep 8, 6:32 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Sep 8, 6:32 PM EDT | Special Weather Statement | LMK | 43 min |
| Sep 8, 8:12 PM EDT | Areal Flood Advisory | LMK | 4 hr |
| Sep 8, 8:21 PM EDT | Flash Flood Warning | LMK | 4 hr |
| Sep 9, 12:13 AM EDT | Areal Flood Warning | LMK | 3 hr |
| Sep 22, 4:04 PM EDT | Flash Flood Watch | LMK | 22 hr |
| Sep 23, 3:23 PM EDT | Flash Flood Watch | LMK | 65 hr |
| Sep 24, 8:53 AM EDT | Areal Flood Advisory | LMK | 112 min |
| Sep 24, 10:58 AM EDT | Areal Flood Advisory | LMK | 3 hr |
| Sep 24, 12:47 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Sep 24, 2:09 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Sep 25, 4:48 PM EDT | Flash Flood Warning | LMK | 3 hr |
| Sep 28, 1:29 AM EDT | Dense Fog Advisory | LMK | 10 hr |
| Oct 17, 3:18 AM EDT | Frost Advisory | LMK | 30 hr |
| Oct 18, 3:16 PM EDT | Frost Advisory | LMK | 19 hr |
| Oct 20, 3:42 AM EDT | Freeze Warning | LMK | 30 hr |
| Oct 20, 8:57 AM EDT | Wind Advisory | LMK | 14 hr |
| Oct 21, 3:14 PM EDT | Frost Advisory | LMK | 18 hr |
| Oct 27, 3:32 PM EDT | Wind Advisory | LMK | 27 hr |
| Oct 30, 3:34 AM EDT | Flood Watch | LMK | 59 hr |
| Nov 14, 3:19 AM EST | Winter Weather Advisory | LMK | 31 hr |
| Nov 14, 7:03 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 2:11 PM EST | Winter Weather Advisory | LMK | 7 hr |
| Nov 25, 4:49 AM EST | Dense Fog Advisory | LMK | 5 hr |
| Nov 25, 10:01 AM EST | Dense Fog Advisory | LMK | 80 min |
| Nov 25, 7:59 PM EST | Wind Advisory | LMK | 17 hr |
| Nov 27, 2:07 AM EST | Winter Weather Advisory | LMK | 11 hr |
| Nov 30, 7:40 AM EST | Dense Fog Advisory | LMK | 2 hr |
| Dec 2, 3:57 AM EST | Wind Advisory | LMK | 14 hr |
| Dec 26, 3:43 AM EST | Wind Advisory | LMK | 45 hr |
| Dec 31, 1:34 AM EST | Wind Advisory | LMK | 20 hr |
| Dec 31, 1:48 PM EST | Severe Thunderstorm Watch | SPC | 3 hr |
| Dec 31, 3:16 PM EST | Mesoscale Discussion | SPC | 119 min |
| Dec 31, 3:38 PM EST | Severe Thunderstorm Warning | LMK | 37 min |
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 | 17 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 12 |
| Flooding | |
| Areal Flood Warning | 10 |
| Flash Flood Warning | 9 |
| River Flood Warning | 4 |
| Flash Flood Watch | 9 |
| Flood Watch | 2 |
| Areal Flood Advisory | 13 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 12 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 4 |
| Frost Advisory | 5 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 9 |
| 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 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.