Alert archive / Tennessee / Overton County
Weather alerts in Overton County, Tennessee, 2020
117 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Overton County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 117
- Warnings
- 23
- Watches
- 20
- Advisories
- 43
- Busiest month
- March18 alerts
- Busiest day
- February 6, 20208 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 4 tornado warnings covering Overton County in 2020 had a tornado report inside them.
Overton County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 1 | 75% | 0 | ||
| Severe thunderstorm warnings | 9 | 6 | 33% | 7 | 57% | 15 min |
| Flash flood warnings | 5 | 3 | 40% | 5 | 80% | 52 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Nashville, TN: tornado warnings | 28 | 5 | 82% | 22 | 23% | 8 min |
| NWS Nashville, TN: severe thunderstorm warnings | 172 | 115 | 33% | 362 | 82% | 18 min |
| NWS Nashville, TN: flash flood warnings | 35 | 21 | 40% | 65 | 78% | 77 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 2:18 AM CST | Flood Watch | OHX | 58 hr |
| Jan 10, 3:34 AM CST | Wind Advisory | OHX | 36 hr |
| Jan 11, 6:57 AM CST | Tornado Watch | SPC | 7 hr |
| Jan 11, 8:20 AM CST | Mesoscale Discussion | SPC | 55 min |
| Jan 11, 9:28 AM CST | Mesoscale Discussion | SPC | 92 min |
| Jan 11, 11:11 AM CST | Severe Thunderstorm Warning | OHX | 34 min |
| Jan 11, 6:55 PM CST | Severe Thunderstorm Warning | OHX | 35 min |
| Jan 11, 7:29 PM CST | Special Weather Statement | OHX | 46 min |
| Feb 5, 2:44 AM CST | Flood Watch | OHX | 32 hr |
| Feb 5, 6:32 PM CST | Flash Flood Warning | OHX | 6 hr |
| Feb 5, 7:04 PM CST | Areal Flood Advisory | OHX | 116 min |
| Feb 5, 7:37 PM CST | Flash Flood Warning | OHX | 4 hr |
| Feb 5, 8:11 PM CST | Severe Thunderstorm Warning | OHX | 34 min |
| Feb 6, 1:29 AM CST | Areal Flood Advisory | OHX | 3 hr |
| Feb 6, 4:30 AM CST | Areal Flood Advisory | OHX | 9 hr |
| Feb 6, 1:29 PM CST | Areal Flood Advisory | OHX | 3 hr |
| Feb 6, 2:25 PM CST | Winter Weather Advisory | OHX | 22 hr |
| Feb 9, 3:00 AM CST | Flood Watch | OHX | 55 hr |
| Feb 11, 11:34 AM CST | Flash Flood Watch | OHX | 42 hr |
| Feb 12, 7:23 PM CST | Severe Thunderstorm Warning | OHX | 37 min |
| Feb 20, 2:40 AM CST | Winter Weather Advisory | OHX | 12 hr |
| Feb 27, 2:41 PM CST | Winter Weather Advisory | OHX | 21 hr |
| Mar 2, 11:22 PM CST | Tornado Watch | SPC | 7 hr |
| Mar 3, 1:02 AM CST | Mesoscale Discussion | SPC | 118 min |
| Mar 3, 1:37 AM CST | Severe Thunderstorm Warning | OHX | 38 min |
| Mar 3, 1:48 AM CST | Tornado Warning | OHX | 27 min |
| Mar 3, 2:12 AM CST | Tornado Warning | OHX | 33 min |
| Mar 3, 2:13 AM CST | Severe Thunderstorm Warning | OHX | 47 min |
| Mar 3, 5:00 AM CST | Areal Flood Advisory | OHX | 3 hr |
| Mar 12, 5:09 PM CDT | Tornado Watch | SPC | 5 hr |
| Mar 18, 3:01 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| Mar 20, 11:11 AM CDT | Special Weather Statement | OHX | 49 min |
| Mar 20, 11:24 AM CDT | Tornado Warning | OHX | 18 min |
| Mar 20, 12:57 PM CDT | Flash Flood Watch | OHX | 7 hr |
| Mar 24, 5:39 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Mar 24, 7:17 PM CDT | Special Weather Statement | OHX | 43 min |
| Mar 24, 7:20 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Mar 28, 9:34 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 29, 1:50 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Mar 29, 2:34 AM CDT | Severe Thunderstorm Warning | OHX | 41 min |
| Apr 8, 9:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Apr 8, 10:16 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 8, 10:45 PM CDT | Special Weather Statement | OHX | 45 min |
| Apr 9, 2:07 PM CDT | Freeze Watch | OHX | 20 hr |
| Apr 10, 10:32 AM CDT | Freeze Warning | OHX | 21 hr |
| Apr 11, 9:03 PM CDT | Flash Flood Watch | OHX | 34 hr |
| Apr 11, 9:10 PM CDT | Wind Advisory | OHX | 37 hr |
| Apr 13, 5:17 PM CDT | Freeze Watch | OHX | 20 hr |
| Apr 14, 1:32 PM CDT | Freeze Warning | OHX | 19 hr |
| Apr 15, 3:38 AM CDT | Freezing Fog Advisory | OHX | 5 hr |
| Apr 15, 2:21 PM CDT | Freeze Warning | OHX | 18 hr |
| Apr 23, 4:20 AM CDT | Wind Advisory | OHX | 11 hr |
| Apr 25, 2:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 25, 5:11 PM CDT | Tornado Watch | SPC | 4 hr |
| Apr 25, 5:25 PM CDT | Special Weather Statement | OHX | 35 min |
| Apr 27, 3:09 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| May 3, 3:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 3, 3:40 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 3, 5:43 PM CDT | Severe Thunderstorm Warning | OHX | 62 min |
| May 3, 6:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 7, 2:30 AM CDT | Freeze Watch | OHX | 25 hr |
| May 8, 3:06 AM CDT | Freeze Warning | OHX | 29 hr |
| May 9, 3:13 AM CDT | Frost Advisory | OHX | 29 hr |
| May 25, 12:24 PM CDT | Special Weather Statement | OHX | 36 min |
| May 25, 12:54 PM CDT | Areal Flood Advisory | OHX | 67 min |
| May 25, 3:21 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jun 14, 10:44 AM CDT | Special Weather Statement | OHX | 46 min |
| Jun 21, 5:01 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jun 27, 9:22 PM CDT | Special Weather Statement | OHX | 38 min |
| Jun 27, 9:59 PM CDT | Special Weather Statement | OHX | 61 min |
| Jun 28, 12:25 AM CDT | Areal Flood Advisory | OHX | 2 hr |
| Jun 28, 1:44 AM CDT | Flash Flood Warning | OHX | 2 hr |
| Jun 28, 11:49 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 12:31 PM CDT | Areal Flood Advisory | OHX | 119 min |
| Jul 20, 11:57 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 8:18 PM CDT | Areal Flood Advisory | OHX | 117 min |
| Jul 21, 8:53 PM CDT | Flash Flood Warning | OHX | 3 hr |
| Jul 24, 1:51 PM CDT | Areal Flood Advisory | OHX | 114 min |
| Jul 24, 4:22 PM CDT | Areal Flood Advisory | OHX | 113 min |
| Jul 29, 6:40 PM CDT | Areal Flood Advisory | OHX | 2 hr |
| Jul 30, 9:15 PM CDT | Special Weather Statement | OHX | 45 min |
| Jul 31, 12:21 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 31, 2:57 PM CDT | Special Weather Statement | OHX | 48 min |
| Jul 31, 3:08 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jul 31, 3:15 PM CDT | Severe Thunderstorm Warning | OHX | 30 min |
| Aug 10, 5:17 AM CDT | Areal Flood Advisory | OHX | 118 min |
| Aug 10, 1:17 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Aug 13, 12:52 PM CDT | Special Weather Statement | OHX | 38 min |
| Aug 20, 12:58 PM CDT | Special Weather Statement | OHX | 47 min |
| Aug 22, 6:19 PM CDT | Areal Flood Advisory | OHX | 116 min |
| Aug 28, 1:04 PM CDT | Tornado Watch | SPC | 3 hr |
| Aug 28, 6:52 PM CDT | Special Weather Statement | OHX | 38 min |
| Aug 28, 6:54 PM CDT | Tornado Warning | OHX | 16 min |
| Aug 29, 3:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 29, 4:43 PM CDT | Special Weather Statement | OHX | 47 min |
| Aug 30, 3:15 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 30, 8:24 PM CDT | Special Weather Statement | OHX | 36 min |
| Aug 30, 9:09 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Aug 30, 9:38 PM CDT | Flash Flood Warning | OHX | 3 hr |
| Sep 13, 4:07 AM CDT | Flash Flood Watch | OHX | 13 hr |
| Sep 13, 11:51 PM CDT | Dense Fog Advisory | OHX | 9 hr |
| Sep 26, 2:21 AM CDT | Dense Fog Advisory | OHX | 7 hr |
| Sep 28, 11:52 PM CDT | Dense Fog Advisory | OHX | 9 hr |
| Oct 16, 9:50 AM CDT | Frost Advisory | OHX | 22 hr |
| Oct 28, 10:15 AM CDT | Flash Flood Watch | OHX | 19 hr |
| Oct 30, 2:21 PM CDT | Freeze Watch | OHX | 36 hr |
| Nov 1, 1:18 AM CST | Freeze Warning | OHX | 31 hr |
| Nov 14, 2:39 PM CST | Wind Advisory | OHX | 27 hr |
| Nov 15, 8:11 AM CST | Special Weather Statement | OHX | 49 min |
| Nov 24, 8:23 PM CST | Wind Advisory | OHX | 19 hr |
| Nov 27, 1:37 AM CST | Dense Fog Advisory | OHX | 8 hr |
| Nov 29, 2:04 PM CST | Winter Weather Advisory | OHX | 40 hr |
| Dec 5, 2:06 AM CST | Freezing Fog Advisory | OHX | 7 hr |
| Dec 6, 1:40 AM CST | Freezing Fog Advisory | OHX | 7 hr |
| Dec 20, 8:14 PM CST | Dense Fog Advisory | OHX | 8 hr |
| Dec 23, 1:46 PM CST | Wind Advisory | OHX | 10 hr |
| Dec 23, 2:29 PM CST | Winter Weather Advisory | OHX | 42 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 | 9 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 17 |
| Flooding | |
| Flash Flood Warning | 5 |
| Flash Flood Watch | 5 |
| Flood Watch | 3 |
| Areal Flood Advisory | 20 |
| Winter | |
| Winter Weather Advisory | 5 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 4 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Freezing Fog Advisory | 3 |
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.