Alert archive / Kentucky / Jefferson County
Weather alerts in Jefferson County, Kentucky, 2013
144 weather alerts in 2013, 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 2013. Tap one for its archive.
- Alerts
- 144
- Warnings
- 31
- Watches
- 19
- Advisories
- 35
- Busiest month
- June23 alerts
- Busiest day
- October 6, 201310 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 2 tornado warnings covering Jefferson County in 2013 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 8 minutes after it went out.
Jefferson County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 1 | 100% | 8 min |
| Severe thunderstorm warnings | 17 | 13 | 24% | 37 | 84% | 19 min |
| Flash flood warnings | 5 | 4 | 20% | 22 | 91% | 64 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Louisville, KY: tornado warnings | 32 | 6 | 81% | 20 | 40% | 12 min |
| NWS Louisville, KY: severe thunderstorm warnings | 192 | 104 | 46% | 378 | 69% | 18 min |
| NWS Louisville, KY: flash flood warnings | 44 | 24 | 45% | 88 | 69% | 65 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 12, 10:47 AM EST | Flood Watch | LMK | 32 hr |
| Jan 13, 2:58 PM EST | Areal Flood Advisory | LMK | 3 hr |
| Jan 15, 3:37 AM EST | Winter Weather Advisory | LMK | 25 hr |
| Jan 24, 3:20 PM EST | Winter Weather Advisory | LMK | 23 hr |
| Jan 29, 3:25 AM EST | Wind Advisory | LMK | 35 hr |
| Jan 29, 10:19 PM EST | Mesoscale Discussion | SPC | 86 min |
| Jan 29, 10:35 PM EST | Tornado Watch | SPC | 6 hr |
| Jan 30, 3:33 AM EST | Mesoscale Discussion | SPC | 57 min |
| Jan 30, 3:35 AM EST | Severe Thunderstorm Warning | LMK | 60 min |
| Jan 30, 4:09 AM EST | Tornado Warning | LMK | 21 min |
| Jan 30, 4:23 AM EST | Tornado Warning | LMK | 32 min |
| Jan 30, 4:31 AM EST | Severe Thunderstorm Warning | LMK | 39 min |
| Jan 30, 4:35 AM EST | Tornado Watch | SPC | 4 hr |
| Jan 31, 11:20 AM EST | Winter Weather Advisory | LMK | 15 hr |
| Feb 1, 11:23 AM EST | Winter Weather Advisory | LMK | 32 hr |
| Feb 13, 9:12 AM EST | Winter Weather Advisory | LMK | 6 hr |
| Feb 18, 4:00 AM EST | Wind Advisory | LMK | 18 hr |
| Feb 21, 3:26 AM EST | Winter Weather Advisory | LMK | 24 hr |
| Mar 5, 4:26 AM EST | Winter Weather Advisory | LMK | 29 hr |
| Mar 5, 10:22 AM EST | Special Weather Statement | LMK | 23 min |
| Mar 18, 8:05 AM EDT | Areal Flood Advisory | LMK | 3 hr |
| Mar 24, 3:59 AM EDT | Winter Weather Advisory | LMK | 35 hr |
| Mar 30, 4:18 AM EDT | Dense Fog Advisory | LMK | 7 hr |
| Apr 5, 3:39 PM EDT | Fire Weather Watch | LMK | 18 hr |
| Apr 6, 9:11 AM EDT | Red Flag Warning | LMK | 11 hr |
| Apr 16, 3:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 16, 6:01 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 16, 8:28 PM EDT | Severe Thunderstorm Warning | LMK | 32 min |
| Apr 16, 8:55 PM EDT | Severe Thunderstorm Warning | LMK | 20 min |
| Apr 16, 9:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 16, 9:12 PM EDT | Severe Thunderstorm Warning | LMK | 43 min |
| Apr 18, 3:41 AM EDT | Wind Advisory | LMK | 18 hr |
| Apr 19, 3:00 AM EDT | Special Weather Statement | LMK | 45 min |
| Apr 19, 2:47 PM EDT | Frost Advisory | LMK | 17 hr |
| Apr 20, 2:48 PM EDT | Frost Advisory | LMK | 17 hr |
| Apr 24, 3:11 PM EDT | Frost Advisory | LMK | 18 hr |
| Apr 25, 3:22 PM EDT | Frost Advisory | LMK | 18 hr |
| May 12, 2:11 PM EDT | Frost Advisory | LMK | 18 hr |
| May 21, 7:17 AM EDT | Special Weather Statement | LMK | 43 min |
| May 22, 5:54 PM EDT | Special Weather Statement | LMK | 31 min |
| May 31, 1:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 1, 5:33 AM EDT | Special Weather Statement | LMK | 42 min |
| Jun 1, 2:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 13, 8:32 AM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 13, 9:05 AM EDT | Special Weather Statement | LMK | 45 min |
| Jun 13, 9:08 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 16, 5:04 PM EDT | Severe Thunderstorm Warning | LMK | 31 min |
| Jun 17, 5:06 PM EDT | Severe Thunderstorm Warning | LMK | 29 min |
| Jun 17, 5:39 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Jun 21, 7:56 PM EDT | Special Weather Statement | LMK | 29 min |
| Jun 21, 8:07 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Jun 23, 1:03 PM EDT | Special Weather Statement | LMK | 57 min |
| Jun 25, 5:35 PM EDT | Special Weather Statement | LMK | 30 min |
| Jun 26, 12:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jun 26, 1:56 PM EDT | Flash Flood Watch | LMK | 14 hr |
| Jun 26, 3:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 26, 4:30 PM EDT | Severe Thunderstorm Warning | LMK | 45 min |
| Jun 26, 5:11 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Jun 26, 5:29 PM EDT | Flash Flood Warning | LMK | 3 hr |
| Jun 26, 7:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 26, 8:42 PM EDT | Special Weather Statement | LMK | 43 min |
| Jun 26, 9:05 PM EDT | Areal Flood Warning | LMK | 6 hr |
| Jun 29, 8:30 PM EDT | Special Weather Statement | LMK | 30 min |
| Jul 1, 7:28 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Jul 3, 2:44 PM EDT | Flash Flood Watch | LMK | 4 days |
| Jul 10, 11:13 AM EDT | Flash Flood Watch | LMK | 7 hr |
| Jul 10, 1:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 10, 2:00 PM EDT | Special Weather Statement | LMK | 25 min |
| Jul 10, 2:26 PM EDT | Severe Thunderstorm Warning | LMK | 29 min |
| Jul 10, 2:59 PM EDT | Severe Thunderstorm Warning | LMK | 31 min |
| Jul 13, 12:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 3:22 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 13, 4:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 14, 8:04 PM EDT | Special Weather Statement | LMK | 31 min |
| Jul 14, 8:05 PM EDT | Special Weather Statement | LMK | 30 min |
| Jul 14, 8:13 PM EDT | Special Weather Statement | LMK | 27 min |
| Jul 18, 4:33 PM EDT | Special Weather Statement | LMK | 32 min |
| Jul 21, 8:05 PM EDT | Special Weather Statement | LMK | 30 min |
| Jul 21, 8:06 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Jul 22, 8:25 AM EDT | Areal Flood Advisory | LMK | 3 hr |
| Jul 23, 1:54 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 23, 4:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 23, 6:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 12, 3:00 PM EDT | Special Weather Statement | LMK | 30 min |
| Aug 12, 3:19 PM EDT | Severe Thunderstorm Warning | LMK | 31 min |
| Aug 21, 6:28 PM EDT | Severe Thunderstorm Warning | LMK | 32 min |
| Aug 22, 2:51 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 31, 2:56 PM EDT | Special Weather Statement | LMK | 44 min |
| Aug 31, 7:59 PM EDT | Severe Thunderstorm Warning | LMK | 36 min |
| Aug 31, 8:11 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Sep 2, 2:54 PM EDT | Special Weather Statement | LMK | 31 min |
| Oct 4, 7:24 PM EDT | Special Weather Statement | LMK | 31 min |
| Oct 5, 8:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Oct 5, 9:24 PM EDT | Areal Flood Advisory | LMK | 3 hr |
| Oct 5, 9:39 PM EDT | Flash Flood Watch | LMK | 21 hr |
| Oct 5, 10:10 PM EDT | Flash Flood Warning | LMK | 4 hr |
| Oct 6, 12:49 AM EDT | Mesoscale Discussion | SPC | 56 min |
| Oct 6, 1:57 AM EDT | Flash Flood Warning | LMK | 5 hr |
| Oct 6, 2:32 AM EDT | Mesoscale Discussion | SPC | 58 min |
| Oct 6, 3:09 AM EDT | Special Weather Statement | LMK | 56 min |
| Oct 6, 3:55 AM EDT | Flash Flood Warning | LMK | 5 hr |
| Oct 6, 8:45 AM EDT | Areal Flood Warning | LMK | 5 hr |
| Oct 19, 7:44 PM EDT | Frost Advisory | LMK | 13 hr |
| Oct 22, 11:23 AM EDT | Freeze Watch | LMK | 29 hr |
| Oct 23, 3:13 AM EDT | Frost Advisory | LMK | 30 hr |
| Oct 23, 4:29 PM EDT | Freeze Warning | LMK | 42 hr |
| Oct 24, 3:33 PM EDT | Freeze Warning | LMK | 41 hr |
| Oct 28, 3:19 PM EDT | Dense Fog Advisory | LMK | 20 hr |
| Oct 30, 3:54 PM EDT | Wind Advisory | LMK | 34 hr |
| Oct 31, 6:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Oct 31, 6:24 PM EDT | Tornado Watch | SPC | 6 hr |
| Oct 31, 8:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 31, 11:04 PM EDT | Special Weather Statement | LMK | 31 min |
| Oct 31, 11:08 PM EDT | Special Weather Statement | LMK | 42 min |
| Oct 31, 11:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 31, 11:14 PM EDT | Severe Thunderstorm Warning | LMK | 31 min |
| Nov 16, 1:45 PM EST | Wind Advisory | LMK | 32 hr |
| Nov 17, 6:30 AM EST | Special Weather Statement | LMK | 115 min |
| Nov 17, 2:34 PM EST | Mesoscale Discussion | SPC | 56 min |
| Nov 17, 2:58 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 17, 4:46 PM EST | Mesoscale Discussion | SPC | 89 min |
| Nov 17, 5:15 PM EST | Special Weather Statement | LMK | 45 min |
| Dec 4, 11:44 AM EST | Winter Storm Watch | LMK | 35 hr |
| Dec 5, 3:38 AM EST | Winter Storm Warning | LMK | 42 hr |
| Dec 6, 3:39 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 6, 12:31 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 6, 4:02 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 7, 11:48 AM EST | Winter Weather Advisory | LMK | 27 hr |
| Dec 10, 7:27 AM EST | Winter Weather Advisory | LMK | 2 hr |
| Dec 17, 7:14 AM EST | Special Weather Statement | LMK | 46 min |
| Dec 19, 2:46 PM EST | Flood Watch | LMK | 64 hr |
| Dec 20, 3:51 PM EST | Wind Advisory | LMK | 34 hr |
| Dec 21, 4:21 PM EST | Mesoscale Discussion | SPC | 54 min |
| Dec 21, 5:49 PM EST | Tornado Watch | SPC | 5 hr |
| Dec 21, 8:40 PM EST | Severe Thunderstorm Warning | LMK | 30 min |
| Dec 21, 8:40 PM EST | Mesoscale Discussion | SPC | 95 min |
| Dec 21, 9:10 PM EST | Special Weather Statement | LMK | 30 min |
| Dec 21, 9:23 PM EST | Severe Thunderstorm Warning | LMK | 32 min |
| Dec 21, 9:46 PM EST | Flash Flood Warning | LMK | 4 hr |
| Dec 21, 10:12 PM EST | Special Weather Statement | LMK | 43 min |
| Dec 21, 10:24 PM EST | Severe Thunderstorm Warning | LMK | 31 min |
| Dec 21, 11:33 PM EST | Mesoscale Discussion | SPC | 87 min |
| Dec 22, 1:45 AM EST | Areal Flood Warning | LMK | 9 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 | 17 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 30 |
| Special Weather Statement | 29 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 5 |
| Flash Flood Watch | 4 |
| Flood Watch | 2 |
| Areal Flood Advisory | 10 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 10 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 7 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.