Alert archive / Kentucky / Knox County
Weather alerts in Knox County, Kentucky, 2020
129 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Knox County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 129
- Warnings
- 29
- Watches
- 16
- Advisories
- 58
- Busiest month
- May30 alerts
- Busiest day
- February 6, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Knox County in 2020 had a tornado report inside them.
Knox County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 5 | 4 | 20% | 5 | 60% | 20 min |
| Flash flood warnings | 4 | 3 | 25% | 1 | 100% | 0 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, KY: tornado warnings | 5 | 0 | 100% | 1 | 0% | |
| NWS Jackson, KY: severe thunderstorm warnings | 91 | 51 | 44% | 155 | 72% | 17 min |
| NWS Jackson, KY: flash flood warnings | 37 | 19 | 49% | 54 | 74% | 47 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 10, 3:36 PM EST | Wind Advisory | JKL | 29 hr |
| Jan 11, 12:35 PM EST | Mesoscale Discussion | SPC | 85 min |
| Jan 11, 8:38 PM EST | High Wind Warning | JKL | 4 hr |
| Feb 4, 4:07 PM EST | Flood Watch | JKL | 45 hr |
| Feb 5, 7:16 PM EST | Areal Flood Advisory | JKL | 3 hr |
| Feb 5, 8:38 PM EST | Areal Flood Advisory | JKL | 3 hr |
| Feb 5, 9:19 PM EST | Flash Flood Warning | JKL | 3 hr |
| Feb 5, 9:45 PM EST | River Flood Warning | JKL | 4 days |
| Feb 5, 9:46 PM EST | Areal Flood Advisory | JKL | 3 hr |
| Feb 5, 10:53 PM EST | Areal Flood Advisory | JKL | 3 hr |
| Feb 5, 11:58 PM EST | Areal Flood Warning | JKL | 15 hr |
| Feb 6, 7:24 AM EST | Areal Flood Warning | JKL | 6 hr |
| Feb 6, 1:11 PM EST | Areal Flood Warning | JKL | 6 hr |
| Feb 6, 2:50 PM EST | Areal Flood Warning | JKL | 6 hr |
| Feb 6, 3:14 PM EST | Winter Weather Advisory | JKL | 22 hr |
| Feb 9, 11:57 AM EST | River Flood Advisory | JKL | 16 hr |
| Feb 10, 4:00 AM EST | Flood Watch | JKL | 30 hr |
| Feb 11, 11:37 AM EST | Flash Flood Watch | JKL | 43 hr |
| Feb 11, 4:09 PM EST | River Flood Advisory | JKL | 55 hr |
| Feb 12, 8:49 PM EST | Areal Flood Advisory | JKL | 10 hr |
| Feb 12, 9:03 PM EST | Special Weather Statement | JKL | 42 min |
| Feb 13, 1:01 AM EST | Areal Flood Advisory | JKL | 6 hr |
| Feb 13, 10:54 PM EST | River Flood Warning | JKL | 8 hr |
| Feb 14, 6:49 AM EST | River Flood Advisory | JKL | 24 hr |
| Feb 27, 3:39 PM EST | Winter Weather Advisory | JKL | 39 hr |
| Mar 12, 11:01 PM EDT | Areal Flood Advisory | JKL | 3 hr |
| Mar 20, 11:30 PM EDT | River Flood Advisory | JKL | 42 hr |
| Mar 24, 9:56 PM EDT | Areal Flood Advisory | JKL | 4 hr |
| Mar 25, 6:55 AM EDT | River Flood Advisory | JKL | 37 hr |
| Mar 29, 4:36 AM EDT | Special Weather Statement | JKL | 39 min |
| Apr 8, 10:14 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 8, 10:51 PM EDT | Tornado Watch | SPC | 5 hr |
| Apr 9, 4:15 PM EDT | Freeze Watch | JKL | 12 hr |
| Apr 10, 4:05 AM EDT | Freeze Warning | JKL | 30 hr |
| Apr 12, 3:55 AM EDT | Wind Advisory | JKL | 34 hr |
| Apr 12, 8:44 PM EDT | Areal Flood Advisory | JKL | 3 hr |
| Apr 12, 11:49 PM EDT | Areal Flood Advisory | JKL | 5 hr |
| Apr 13, 1:13 AM EDT | Areal Flood Warning | JKL | 6 hr |
| Apr 13, 3:53 AM EDT | River Flood Advisory | JKL | 55 hr |
| Apr 13, 4:27 PM EDT | River Flood Warning | JKL | 28 hr |
| Apr 14, 4:08 AM EDT | Freeze Warning | JKL | 30 hr |
| Apr 14, 8:41 PM EDT | River Flood Advisory | JKL | 14 hr |
| Apr 15, 10:25 AM EDT | Frost Advisory | JKL | 23 hr |
| Apr 18, 3:35 PM EDT | Frost Advisory | JKL | 17 hr |
| Apr 21, 4:00 AM EDT | Frost Advisory | JKL | 30 hr |
| Apr 25, 5:48 PM EDT | Special Weather Statement | JKL | 42 min |
| Apr 25, 6:01 PM EDT | Severe Thunderstorm Warning | JKL | 29 min |
| Apr 25, 6:19 PM EDT | Tornado Warning | JKL | 26 min |
| Apr 25, 6:31 PM EDT | Areal Flood Advisory | JKL | 3 hr |
| Apr 25, 6:35 PM EDT | Special Weather Statement | JKL | 25 min |
| Apr 27, 3:23 AM EDT | Dense Fog Advisory | JKL | 7 hr |
| Apr 29, 7:16 AM EDT | Wind Advisory | JKL | 7 hr |
| May 3, 4:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 3, 6:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 3, 6:52 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 5, 9:38 AM EDT | Flash Flood Warning | JKL | 3 hr |
| May 5, 12:31 PM EDT | Areal Flood Warning | JKL | 7 hr |
| May 6, 4:02 AM EDT | River Flood Advisory | JKL | 12 hr |
| May 6, 4:04 PM EDT | Frost Advisory | JKL | 17 hr |
| May 7, 3:55 AM EDT | Freeze Warning | JKL | 54 hr |
| May 8, 4:29 PM EDT | Freeze Watch | JKL | 12 hr |
| May 9, 4:12 AM EDT | Freeze Warning | JKL | 29 hr |
| May 11, 3:25 AM EDT | Frost Advisory | JKL | 30 hr |
| May 17, 3:45 PM EDT | Flash Flood Watch | JKL | 4 days |
| May 18, 2:18 PM EDT | Tornado Watch | SPC | 7 hr |
| May 18, 4:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 18, 7:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| May 18, 10:50 PM EDT | Areal Flood Advisory | JKL | 10 hr |
| May 19, 8:03 AM EDT | Areal Flood Warning | JKL | 12 hr |
| May 19, 10:12 AM EDT | Areal Flood Advisory | JKL | 9 hr |
| May 19, 7:20 PM EDT | Areal Flood Advisory | JKL | 115 min |
| May 19, 7:47 PM EDT | River Flood Advisory | JKL | 41 hr |
| May 19, 8:03 PM EDT | Areal Flood Advisory | JKL | 6 hr |
| May 19, 9:20 PM EDT | Areal Flood Advisory | JKL | 4 hr |
| May 20, 12:49 AM EDT | Areal Flood Advisory | JKL | 4 hr |
| May 20, 1:02 AM EDT | River Flood Warning | JKL | 26 hr |
| May 21, 3:00 AM EDT | River Flood Advisory | JKL | 17 hr |
| May 23, 4:14 PM EDT | Special Weather Statement | JKL | 46 min |
| May 24, 2:24 PM EDT | Areal Flood Advisory | JKL | 3 hr |
| May 24, 2:51 PM EDT | Special Weather Statement | JKL | 54 min |
| May 25, 3:48 PM EDT | Areal Flood Advisory | JKL | 3 hr |
| May 25, 4:09 PM EDT | Flash Flood Warning | JKL | 3 hr |
| Jun 4, 3:23 PM EDT | Areal Flood Advisory | JKL | 3 hr |
| Jun 4, 9:44 PM EDT | Special Weather Statement | JKL | 61 min |
| Jun 5, 10:42 PM EDT | Dense Fog Advisory | JKL | 10 hr |
| Jun 10, 5:30 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 15, 7:56 AM EDT | Areal Flood Advisory | JKL | 2 hr |
| Jun 15, 10:01 AM EDT | Areal Flood Advisory | JKL | 59 min |
| Jun 21, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 21, 6:45 PM EDT | Severe Thunderstorm Warning | JKL | 30 min |
| Jun 21, 7:38 PM EDT | Special Weather Statement | JKL | 37 min |
| Jun 27, 8:28 PM EDT | Flash Flood Watch | JKL | 72 hr |
| Jun 29, 1:35 AM EDT | Areal Flood Advisory | JKL | 6 hr |
| Jun 29, 4:39 AM EDT | Flash Flood Warning | JKL | 6 hr |
| Jun 29, 7:36 PM EDT | Special Weather Statement | JKL | 39 min |
| Jul 1, 4:30 PM EDT | Areal Flood Advisory | JKL | 2 hr |
| Jul 17, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 20, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 10:17 PM EDT | Special Weather Statement | JKL | 43 min |
| Jul 21, 10:27 PM EDT | Severe Thunderstorm Warning | JKL | 48 min |
| Jul 21, 11:05 PM EDT | Severe Thunderstorm Warning | JKL | 40 min |
| Jul 24, 4:56 PM EDT | Special Weather Statement | JKL | 34 min |
| Jul 24, 5:07 PM EDT | Severe Thunderstorm Warning | JKL | 23 min |
| Jul 24, 5:26 PM EDT | Special Weather Statement | JKL | 34 min |
| Jul 30, 12:01 PM EDT | Flash Flood Watch | JKL | 40 hr |
| Jul 30, 11:11 PM EDT | Special Weather Statement | JKL | 34 min |
| Jul 31, 1:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 31, 5:02 PM EDT | Special Weather Statement | JKL | 28 min |
| Aug 14, 9:45 AM EDT | Flash Flood Watch | JKL | 18 hr |
| Aug 14, 4:59 PM EDT | Areal Flood Advisory | JKL | 97 min |
| Aug 18, 7:30 PM EDT | Special Weather Statement | JKL | 45 min |
| Aug 18, 8:00 PM EDT | Areal Flood Advisory | JKL | 2 hr |
| Aug 18, 8:20 PM EDT | Special Weather Statement | JKL | 40 min |
| Sep 13, 1:47 PM EDT | Areal Flood Advisory | JKL | 5 hr |
| Sep 13, 3:41 PM EDT | Areal Flood Advisory | JKL | 3 hr |
| Sep 14, 1:54 AM EDT | Dense Fog Advisory | JKL | 5 hr |
| Sep 26, 3:35 AM EDT | Dense Fog Advisory | JKL | 5 hr |
| Oct 16, 4:31 AM EDT | Freeze Watch | JKL | 9 hr |
| Oct 16, 1:57 PM EDT | Freeze Warning | JKL | 19 hr |
| Oct 30, 3:59 AM EDT | Frost Advisory | JKL | 30 hr |
| Oct 30, 3:57 PM EDT | Freeze Watch | JKL | 37 hr |
| Nov 1, 3:51 AM EST | Freeze Warning | JKL | 30 hr |
| Nov 14, 3:17 AM EST | Wind Advisory | JKL | 40 hr |
| Nov 29, 3:44 PM EST | Winter Weather Advisory | JKL | 42 hr |
| Dec 6, 3:06 AM EST | Freezing Fog Advisory | JKL | 7 hr |
| Dec 20, 11:15 PM EST | Dense Fog Advisory | JKL | 10 hr |
| Dec 23, 4:51 AM EST | Winter Storm Watch | JKL | 9 hr |
| Dec 23, 1:32 PM EST | Winter Storm Warning | JKL | 40 hr |
| Dec 23, 1:32 PM EST | Winter Weather Advisory | JKL | 50 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 archive20192021
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.