Alert archive / Indiana / Jefferson County
Weather alerts in Jefferson County, Indiana, 2012
168 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 168
- Warnings
- 38
- Watches
- 25
- Advisories
- 35
- Busiest month
- July43 alerts
- Busiest day
- July 1, 20129 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 3 tornado warnings covering Jefferson County in 2012 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 20 minutes after it went out.
Jefferson County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 2 | 33% | 2 | 50% | 20 min |
| Severe thunderstorm warnings | 20 | 13 | 35% | 14 | 79% | 18 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 100% | 49 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Louisville, KY: tornado warnings | 99 | 21 | 79% | 65 | 80% | 16 min |
| NWS Louisville, KY: severe thunderstorm warnings | 545 | 256 | 53% | 745 | 62% | 16 min |
| NWS Louisville, KY: flash flood warnings | 33 | 11 | 67% | 37 | 78% | 60 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, 4:10 AM EST | Wind Advisory | LMK | 303 days |
| Jan 2, 7:49 PM EST | Winter Weather Advisory | LMK | 13 hr |
| Jan 11, 2:39 PM EST | Winter Weather Advisory | LMK | 42 hr |
| Jan 17, 10:24 AM EST | Special Weather Statement | LMK | 36 min |
| Jan 17, 10:34 AM EST | Severe Thunderstorm Warning | LMK | 26 min |
| Jan 17, 10:21 PM EST | River Flood Warning | LMK | 8 hr |
| Jan 20, 10:36 AM EST | Winter Weather Advisory | LMK | 17 hr |
| Jan 20, 6:32 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 22, 11:49 PM EST | Mesoscale Discussion | SPC | 86 min |
| Jan 23, 12:34 AM EST | Severe Thunderstorm Watch | SPC | 3 hr |
| Jan 23, 1:52 AM EST | Mesoscale Discussion | SPC | 113 min |
| Jan 23, 2:15 AM EST | Special Weather Statement | LMK | 30 min |
| Jan 23, 5:42 AM EST | Wind Advisory | LMK | 11 hr |
| Jan 25, 3:28 PM EST | Flood Watch | LMK | 34 hr |
| Jan 26, 12:55 PM EST | River Flood Advisory | LMK | 8 hr |
| Jan 26, 9:02 PM EST | River Flood Warning | LMK | 22 hr |
| Feb 9, 3:43 PM EST | Winter Weather Advisory | LMK | 41 hr |
| Feb 13, 3:54 AM EST | Winter Weather Advisory | LMK | 25 hr |
| Feb 21, 4:04 AM EST | Wind Advisory | LMK | 11 hr |
| Feb 23, 3:21 PM EST | Mesoscale Discussion | SPC | 84 min |
| Feb 23, 7:28 PM EST | Mesoscale Discussion | SPC | 92 min |
| Feb 24, 3:41 AM EST | Wind Advisory | LMK | 15 hr |
| Feb 29, 1:53 AM EST | Special Weather Statement | LMK | 52 min |
| Feb 29, 3:40 AM EST | Mesoscale Discussion | SPC | 65 min |
| Feb 29, 5:39 AM EST | Tornado Watch | SPC | 7 hr |
| Feb 29, 8:13 AM EST | Tornado Warning | LMK | 17 min |
| Feb 29, 8:38 AM EST | Mesoscale Discussion | SPC | 67 min |
| Mar 2, 11:13 AM EST | Special Weather Statement | LMK | 17 min |
| Mar 2, 1:02 PM EST | Tornado Watch | SPC | 8 hr |
| Mar 2, 1:05 PM EST | Mesoscale Discussion | SPC | 85 min |
| Mar 2, 3:06 PM EST | Tornado Warning | LMK | 39 min |
| Mar 2, 3:35 PM EST | Mesoscale Discussion | SPC | 85 min |
| Mar 2, 3:39 PM EST | Tornado Warning | LMK | 36 min |
| Mar 2, 4:10 PM EST | Severe Thunderstorm Warning | LMK | 35 min |
| Mar 2, 4:27 PM EST | Flash Flood Warning | LMK | 3 hr |
| Mar 4, 3:34 AM EST | Winter Weather Advisory | LMK | 30 hr |
| Mar 7, 1:09 PM EST | Wind Advisory | LMK | 5 hr |
| Mar 15, 8:00 AM EDT | Special Weather Statement | LMK | 60 min |
| Mar 15, 2:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 15, 3:06 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 15, 4:19 PM EDT | Severe Thunderstorm Warning | LMK | 26 min |
| Mar 15, 4:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Mar 15, 4:50 PM EDT | Areal Flood Advisory | LMK | 115 min |
| Mar 18, 1:49 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 23, 6:08 PM EDT | Mesoscale Discussion | SPC | 37 min |
| Mar 23, 6:25 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 23, 9:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Mar 23, 9:19 PM EDT | Special Weather Statement | LMK | 41 min |
| Mar 23, 11:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Mar 26, 3:36 AM EDT | Frost Advisory | LMK | 30 hr |
| Mar 30, 2:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Mar 30, 7:02 PM EDT | Mesoscale Discussion | SPC | 28 min |
| Mar 30, 8:18 PM EDT | Special Weather Statement | LMK | 27 min |
| Mar 30, 9:45 PM EDT | Special Weather Statement | LMK | 45 min |
| Mar 30, 10:25 PM EDT | Mesoscale Discussion | SPC | 35 min |
| Apr 1, 11:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Apr 5, 3:26 PM EDT | Freeze Watch | LMK | 12 hr |
| Apr 6, 3:31 AM EDT | Freeze Warning | LMK | 29 hr |
| Apr 9, 3:43 PM EDT | Freeze Watch | LMK | 23 hr |
| Apr 10, 3:02 PM EDT | Freeze Watch | LMK | 13 hr |
| Apr 10, 3:02 PM EDT | Freeze Warning | LMK | 16 hr |
| Apr 11, 4:07 AM EDT | Freeze Warning | LMK | 29 hr |
| Apr 25, 11:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 28, 3:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Apr 28, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 28, 6:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 28, 8:30 PM EDT | Special Weather Statement | LMK | 30 min |
| Apr 30, 1:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Apr 30, 3:07 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Apr 30, 4:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 1, 3:01 PM EDT | Tornado Watch | SPC | 7 hr |
| May 1, 4:05 PM EDT | Severe Thunderstorm Warning | LMK | 25 min |
| May 1, 4:34 PM EDT | Severe Thunderstorm Warning | LMK | 26 min |
| May 1, 5:16 PM EDT | Special Weather Statement | LMK | 29 min |
| May 1, 6:13 PM EDT | Severe Thunderstorm Warning | LMK | 47 min |
| May 1, 6:40 PM EDT | Severe Thunderstorm Warning | LMK | 35 min |
| May 1, 6:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 4, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 4, 4:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 4, 10:21 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| May 4, 10:29 PM EDT | Special Weather Statement | LMK | 46 min |
| May 4, 10:41 PM EDT | Flash Flood Warning | LMK | 3 hr |
| May 7, 4:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 30, 5:05 AM EDT | Dense Fog Advisory | LMK | 5 hr |
| May 31, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 26, 4:03 PM EDT | Fire Weather Watch | LMK | 21 hr |
| Jun 27, 1:24 PM EDT | Red Flag Warning | LMK | 32 hr |
| Jun 27, 1:48 PM EDT | Heat Advisory | LMK | 4 days |
| Jun 29, 2:51 PM EDT | Excessive Heat Warning | LMK | 55 hr |
| Jun 29, 5:07 PM EDT | Special Weather Statement | LMK | 43 min |
| Jun 30, 6:55 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 1, 5:09 AM EDT | Special Weather Statement | LMK | 26 min |
| Jul 1, 5:40 AM EDT | Special Weather Statement | LMK | 20 min |
| Jul 1, 3:35 PM EDT | Heat Advisory | LMK | 28 hr |
| Jul 1, 5:56 PM EDT | Special Weather Statement | LMK | 29 min |
| Jul 1, 5:59 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 1, 6:16 PM EDT | Severe Thunderstorm Warning | LMK | 29 min |
| Jul 1, 6:42 PM EDT | Severe Thunderstorm Warning | LMK | 28 min |
| Jul 1, 7:04 PM EDT | Severe Thunderstorm Warning | LMK | 31 min |
| Jul 1, 7:15 PM EDT | Severe Thunderstorm Warning | LMK | 30 min |
| Jul 1, 8:35 PM EDT | Areal Flood Advisory | LMK | 2 hr |
| Jul 1, 9:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 3, 3:33 PM EDT | Excessive Heat Warning | LMK | 4 days |
| Jul 7, 3:43 PM EDT | Heat Advisory | LMK | 28 hr |
| Jul 8, 1:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 8, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 8, 3:36 PM EDT | Special Weather Statement | LMK | 24 min |
| Jul 8, 4:32 PM EDT | Special Weather Statement | LMK | 28 min |
| Jul 8, 4:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 17, 3:32 AM EDT | Heat Advisory | LMK | 12 hr |
| Jul 18, 3:26 AM EDT | Heat Advisory | LMK | 17 hr |
| Jul 18, 4:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 19, 3:33 AM EDT | Heat Advisory | LMK | 17 hr |
| Jul 19, 3:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 19, 5:31 PM EDT | Severe Thunderstorm Warning | LMK | 29 min |
| Jul 19, 8:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 23, 1:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 3:46 PM EDT | Heat Advisory | LMK | 29 hr |
| Jul 24, 8:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 25, 3:42 PM EDT | Heat Advisory | LMK | 27 hr |
| Jul 25, 4:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 26, 12:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 2:46 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 26, 4:55 PM EDT | Mesoscale Discussion | SPC | 35 min |
| Jul 26, 7:20 PM EDT | Severe Thunderstorm Warning | LMK | 19 min |
| Jul 26, 7:38 PM EDT | Special Weather Statement | LMK | 32 min |
| Jul 26, 7:53 PM EDT | Severe Thunderstorm Warning | LMK | 14 min |
| Jul 27, 2:43 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 5:13 PM EDT | Special Weather Statement | LMK | 32 min |
| Jul 27, 5:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 27, 5:27 PM EDT | Severe Thunderstorm Warning | LMK | 28 min |
| Jul 27, 5:41 PM EDT | Severe Thunderstorm Warning | LMK | 29 min |
| Jul 27, 5:51 PM EDT | Severe Thunderstorm Warning | LMK | 29 min |
| Jul 27, 6:24 PM EDT | Severe Thunderstorm Warning | LMK | 31 min |
| Aug 9, 3:43 PM EDT | Severe Thunderstorm Warning | LMK | 32 min |
| Aug 10, 12:43 AM EDT | Special Weather Statement | LMK | 32 min |
| Aug 10, 1:16 AM EDT | Special Weather Statement | LMK | 29 min |
| Aug 16, 4:27 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 16, 6:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 8:38 PM EDT | Special Weather Statement | LMK | 42 min |
| Sep 5, 2:10 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 5, 2:43 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Sep 5, 3:04 PM EDT | Areal Flood Advisory | LMK | 116 min |
| Sep 6, 6:16 AM EDT | Dense Fog Advisory | LMK | 4 hr |
| Sep 7, 8:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 7, 9:10 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 7, 11:10 PM EDT | Severe Thunderstorm Warning | LMK | 40 min |
| Sep 23, 2:55 PM EDT | Frost Advisory | LMK | 17 hr |
| Sep 26, 7:46 AM EDT | Special Weather Statement | LMK | 29 min |
| Oct 7, 3:52 AM EDT | Frost Advisory | LMK | 28 hr |
| Oct 8, 2:41 PM EDT | Frost Advisory | LMK | 18 hr |
| Oct 10, 4:11 AM EDT | Freeze Warning | LMK | 29 hr |
| Oct 14, 8:38 AM EDT | Wind Advisory | LMK | 13 hr |
| Oct 31, 3:56 AM EDT | Freeze Warning | LMK | 29 hr |
| Dec 9, 8:05 PM EST | Areal Flood Advisory | LMK | 3 hr |
| Dec 17, 12:26 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
| Dec 17, 1:44 PM EST | Special Weather Statement | LMK | 26 min |
| Dec 17, 1:58 PM EST | Mesoscale Discussion | SPC | 92 min |
| Dec 17, 2:08 PM EST | Special Weather Statement | LMK | 82 min |
| Dec 19, 4:21 PM EST | Wind Advisory | LMK | 42 hr |
| Dec 25, 4:41 AM EST | Winter Storm Watch | LMK | 11 hr |
| Dec 25, 3:05 PM EST | Blizzard Warning | LMK | 19 hr |
| Dec 25, 3:05 PM EST | Winter Weather Advisory | LMK | 30 hr |
| Dec 26, 3:25 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 10:26 AM EST | Winter Storm Warning | LMK | 5 hr |
| Dec 28, 3:54 AM EST | Winter Weather Advisory | LMK | 35 hr |
| Dec 28, 3:03 PM EST | Winter Storm Warning | LMK | 16 hr |
| Dec 28, 9:18 PM EST | Mesoscale Discussion | SPC | 4 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 archive20112013
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.