Alert archive / Tennessee / DeKalb County
Weather alerts in DeKalb County, Tennessee, 2019
108 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
DeKalb County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 108
- Warnings
- 25
- Watches
- 9
- Advisories
- 40
- Busiest month
- February19 alerts
- Busiest day
- August 13, 20198 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 DeKalb County in 2019 had a tornado report inside them.
DeKalb County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 16 | 9 | 44% | 5 | 100% | 22 min |
| Flash flood warnings | 5 | 4 | 20% | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Nashville, TN: tornado warnings | 17 | 0 | 100% | 7 | 0% | |
| NWS Nashville, TN: severe thunderstorm warnings | 137 | 83 | 39% | 311 | 71% | 20 min |
| NWS Nashville, TN: flash flood warnings | 63 | 45 | 29% | 178 | 79% | 92 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 21, 2:47 PM CST | Wind Advisory | OHX | 48 hr |
| Jan 27, 2:06 PM CST | Winter Weather Advisory | OHX | 37 hr |
| Feb 6, 2:34 PM CST | Special Weather Statement | OHX | 41 min |
| Feb 6, 2:38 PM CST | Tornado Warning | OHX | 12 min |
| Feb 6, 3:02 PM CST | Mesoscale Discussion | SPC | 118 min |
| Feb 6, 3:45 PM CST | Areal Flood Advisory | OHX | 4 hr |
| Feb 6, 9:31 PM CST | Areal Flood Advisory | OHX | 12 hr |
| Feb 6, 10:55 PM CST | Flash Flood Warning | OHX | 3 hr |
| Feb 7, 9:49 AM CST | Wind Advisory | OHX | 9 hr |
| Feb 12, 5:17 AM CST | Special Weather Statement | OHX | 43 min |
| Feb 18, 1:51 PM CST | Flash Flood Watch | OHX | 52 hr |
| Feb 20, 10:46 AM CST | Flash Flood Warning | OHX | 3 hr |
| Feb 20, 1:43 PM CST | Areal Flood Advisory | OHX | 2 hr |
| Feb 21, 1:48 AM CST | Flash Flood Watch | OHX | 70 hr |
| Feb 23, 5:13 AM CST | Areal Flood Advisory | OHX | 5 hr |
| Feb 23, 9:39 AM CST | Areal Flood Advisory | OHX | 6 hr |
| Feb 23, 9:50 AM CST | Flash Flood Warning | OHX | 3 hr |
| Feb 23, 9:55 AM CST | Flash Flood Warning | OHX | 3 hr |
| Feb 23, 12:34 PM CST | Areal Flood Advisory | OHX | 3 hr |
| Feb 23, 12:42 PM CST | Areal Flood Advisory | OHX | 3 hr |
| Feb 23, 11:00 PM CST | Areal Flood Advisory | OHX | 3 hr |
| Mar 8, 2:02 PM CST | Wind Advisory | OHX | 31 hr |
| Mar 9, 7:20 PM CST | Mesoscale Discussion | SPC | 85 min |
| Mar 9, 7:23 PM CST | Severe Thunderstorm Warning | OHX | 23 min |
| Mar 13, 3:17 PM CDT | Wind Advisory | OHX | 28 hr |
| Mar 25, 4:07 PM CDT | Special Weather Statement | OHX | 53 min |
| Mar 30, 3:54 AM CDT | Freeze Watch | OHX | 23 hr |
| Mar 30, 7:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 30, 7:57 PM CDT | Special Weather Statement | OHX | 33 min |
| Mar 31, 2:36 AM CDT | Freeze Warning | OHX | 30 hr |
| Apr 7, 5:03 PM CDT | Special Weather Statement | OHX | 27 min |
| Apr 7, 5:13 PM CDT | Severe Thunderstorm Warning | OHX | 32 min |
| Apr 9, 5:38 AM CDT | Dense Fog Advisory | OHX | 4 hr |
| Apr 10, 2:32 PM CDT | Wind Advisory | OHX | 30 hr |
| Apr 14, 2:22 AM CDT | Wind Advisory | OHX | 17 hr |
| Apr 14, 5:21 AM CDT | Special Weather Statement | OHX | 39 min |
| Apr 21, 2:05 AM CDT | Dense Fog Advisory | OHX | 7 hr |
| Apr 21, 9:01 AM CDT | Dense Fog Advisory | OHX | 53 min |
| May 2, 2:44 PM CDT | Severe Thunderstorm Warning | OHX | 31 min |
| May 2, 4:16 PM CDT | Severe Thunderstorm Warning | OHX | 29 min |
| May 2, 4:42 PM CDT | Severe Thunderstorm Warning | OHX | 17 min |
| May 6, 3:15 AM CDT | Dense Fog Advisory | OHX | 5 hr |
| Jun 5, 2:07 PM CDT | Special Weather Statement | OHX | 23 min |
| Jun 5, 4:29 PM CDT | Special Weather Statement | OHX | 46 min |
| Jun 19, 5:31 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 19, 7:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 8:25 PM CDT | Severe Thunderstorm Warning | OHX | 35 min |
| Jun 19, 8:31 PM CDT | Severe Thunderstorm Warning | OHX | 44 min |
| Jun 19, 8:56 PM CDT | Severe Thunderstorm Warning | OHX | 34 min |
| Jun 20, 4:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 20, 3:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 21, 5:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 21, 5:47 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 21, 7:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jun 21, 8:01 PM CDT | Severe Thunderstorm Warning | OHX | 44 min |
| Jun 21, 8:38 PM CDT | Severe Thunderstorm Warning | OHX | 52 min |
| Jun 22, 5:24 PM CDT | Special Weather Statement | OHX | 51 min |
| Jun 22, 5:58 PM CDT | Special Weather Statement | OHX | 47 min |
| Jun 24, 12:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 24, 2:01 PM CDT | Special Weather Statement | OHX | 44 min |
| Jun 27, 4:16 PM CDT | Special Weather Statement | OHX | 29 min |
| Jul 2, 11:33 PM CDT | Areal Flood Advisory | OHX | 117 min |
| Jul 11, 4:07 PM CDT | Areal Flood Advisory | OHX | 115 min |
| Jul 13, 8:27 PM CDT | Special Weather Statement | OHX | 33 min |
| Jul 13, 8:37 PM CDT | Severe Thunderstorm Warning | OHX | 23 min |
| Jul 13, 8:58 PM CDT | Severe Thunderstorm Warning | OHX | 37 min |
| Jul 13, 9:09 PM CDT | Flash Flood Warning | OHX | 3 hr |
| Jul 18, 2:29 PM CDT | Heat Advisory | OHX | 29 hr |
| Jul 22, 3:19 AM CDT | Flash Flood Watch | OHX | 17 hr |
| Jul 22, 2:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 3:30 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jul 22, 4:25 PM CDT | Areal Flood Advisory | OHX | 2 hr |
| Jul 22, 6:34 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Aug 5, 12:31 AM CDT | Dense Fog Advisory | OHX | 8 hr |
| Aug 6, 8:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Aug 6, 8:46 PM CDT | Special Weather Statement | OHX | 59 min |
| Aug 8, 3:33 AM CDT | Dense Fog Advisory | OHX | 5 hr |
| Aug 12, 2:05 PM CDT | Heat Advisory | OHX | 29 hr |
| Aug 13, 1:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 13, 2:49 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 13, 3:49 PM CDT | Severe Thunderstorm Warning | OHX | 41 min |
| Aug 13, 4:10 PM CDT | Severe Thunderstorm Warning | OHX | 35 min |
| Aug 13, 4:15 PM CDT | Severe Thunderstorm Warning | OHX | 30 min |
| Aug 13, 4:39 PM CDT | Special Weather Statement | OHX | 51 min |
| Aug 13, 4:47 PM CDT | Severe Thunderstorm Warning | OHX | 28 min |
| Aug 13, 5:09 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Aug 20, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Aug 20, 7:17 PM CDT | Special Weather Statement | OHX | 43 min |
| Aug 23, 1:13 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| Sep 10, 7:08 PM CDT | Special Weather Statement | OHX | 22 min |
| Sep 27, 12:49 AM CDT | Dense Fog Advisory | OHX | 8 hr |
| Oct 5, 7:12 PM CDT | Special Weather Statement | OHX | 33 min |
| Oct 17, 2:16 PM CDT | Frost Advisory | OHX | 18 hr |
| Oct 26, 3:18 AM CDT | Wind Advisory | OHX | 15 hr |
| Oct 28, 2:04 AM CDT | Dense Fog Advisory | OHX | 7 hr |
| Oct 28, 9:06 AM CDT | Dense Fog Advisory | OHX | 114 min |
| Oct 28, 9:44 PM CDT | Dense Fog Advisory | OHX | 11 hr |
| Oct 30, 2:02 PM CDT | Freeze Watch | OHX | 13 hr |
| Oct 31, 2:37 AM CDT | Freeze Warning | OHX | 30 hr |
| Oct 31, 5:47 AM CDT | Special Weather Statement | OHX | 43 min |
| Nov 1, 2:07 PM CDT | Freeze Warning | OHX | 19 hr |
| Nov 26, 12:26 PM CST | Wind Advisory | OHX | 24 hr |
| Nov 30, 5:09 PM CST | Special Weather Statement | OHX | 51 min |
| Dec 1, 3:33 PM CST | Winter Weather Advisory | OHX | 20 hr |
| Dec 16, 7:39 AM CST | Flash Flood Watch | OHX | 12 hr |
| Dec 28, 12:24 AM CST | Dense Fog Advisory | OHX | 4 hr |
| Dec 29, 6:16 PM CST | Areal Flood Advisory | OHX | 3 hr |
| Dec 29, 9:15 PM CST | Areal Flood Advisory | OHX | 3 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 | 16 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 14 |
| Special Weather Statement | 20 |
| Flooding | |
| Flash Flood Warning | 5 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 15 |
| Winter | |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.