Alert archive / Tennessee / Macon County
Weather alerts in Macon County, Tennessee, 2020
102 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Macon County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 102
- Warnings
- 22
- Watches
- 16
- Advisories
- 32
- Busiest month
- April15 alerts
- Busiest day
- May 3, 20207 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 Macon County in 2020 had a tornado report inside them.
Macon 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 | 16 | 12 | 25% | 2 | 100% | 33 min |
| Flash flood warnings | 2 | 2 | 0% | 0 |
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, 9:55 AM CST | Special Weather Statement | OHX | 35 min |
| Jan 11, 10:47 AM CST | Severe Thunderstorm Warning | OHX | 28 min |
| Jan 11, 5:43 PM CST | Severe Thunderstorm Warning | OHX | 47 min |
| Jan 11, 6:09 PM CST | Severe Thunderstorm Warning | OHX | 36 min |
| Jan 11, 6:26 PM CST | Severe Thunderstorm Warning | OHX | 34 min |
| Jan 11, 6:42 PM CST | Severe Thunderstorm Warning | OHX | 48 min |
| Jan 15, 6:11 PM CST | Special Weather Statement | OHX | 34 min |
| Feb 5, 2:44 AM CST | Flood Watch | OHX | 32 hr |
| Feb 5, 7:37 PM CST | Flash Flood Warning | OHX | 4 hr |
| Feb 6, 2:25 PM CST | Winter Weather Advisory | OHX | 22 hr |
| Feb 11, 11:34 AM CST | Flash Flood Watch | OHX | 42 hr |
| Mar 2, 11:22 PM CST | Tornado Watch | SPC | 7 hr |
| Mar 3, 1:02 AM CST | Mesoscale Discussion | SPC | 118 min |
| Mar 12, 5:09 PM CDT | Tornado Watch | SPC | 5 hr |
| Mar 20, 12:39 PM CDT | Special Weather Statement | OHX | 66 min |
| Mar 24, 5:39 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Mar 24, 6:14 PM CDT | Flash Flood Warning | OHX | 91 min |
| Mar 28, 9:34 PM CDT | Tornado Watch | SPC | 6 hr |
| Mar 28, 11:29 PM CDT | Special Weather Statement | OHX | 61 min |
| Apr 8, 5:58 PM CDT | Severe Thunderstorm Warning | OHX | 32 min |
| Apr 8, 7:04 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 8, 9:36 PM CDT | Severe Thunderstorm Warning | OHX | 39 min |
| Apr 8, 10:09 PM CDT | Severe Thunderstorm Warning | OHX | 36 min |
| Apr 10, 10:32 AM CDT | Frost Advisory | 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 | Frost Advisory | 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 27, 3:09 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| Apr 29, 6:26 PM CDT | Special Weather Statement | OHX | 34 min |
| 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, 4:43 PM CDT | Severe Thunderstorm Warning | OHX | 47 min |
| May 3, 5:11 PM CDT | Severe Thunderstorm Warning | OHX | 49 min |
| May 3, 5:23 PM CDT | Tornado Warning | OHX | 16 min |
| May 3, 5:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| May 3, 6:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 5, 4:52 AM CDT | Special Weather Statement | OHX | 38 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, 3:44 PM CDT | Severe Thunderstorm Warning | OHX | 25 min |
| Jun 28, 12:25 AM CDT | Areal Flood Advisory | OHX | 2 hr |
| Jun 28, 11:49 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 1:33 PM CDT | Special Weather Statement | OHX | 42 min |
| Jun 28, 2:16 PM CDT | Areal Flood Advisory | OHX | 4 hr |
| Jun 28, 3:16 PM CDT | Areal Flood Advisory | OHX | 4 hr |
| Jun 29, 4:45 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jul 5, 2:53 PM CDT | Special Weather Statement | OHX | 22 min |
| Jul 5, 3:04 PM CDT | Areal Flood Advisory | OHX | 116 min |
| Jul 19, 2:23 AM CDT | Heat Advisory | OHX | 16 hr |
| Jul 20, 12:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 8:40 PM CDT | Special Weather Statement | OHX | 35 min |
| Jul 28, 4:49 PM CDT | Areal Flood Advisory | OHX | 116 min |
| Jul 30, 7:45 PM CDT | Special Weather Statement | OHX | 30 min |
| Jul 30, 8:15 PM CDT | Special Weather Statement | OHX | 30 min |
| Jul 31, 12:21 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jul 31, 2:31 PM CDT | Special Weather Statement | OHX | 29 min |
| Aug 10, 2:41 PM CDT | Severe Thunderstorm Warning | OHX | 34 min |
| Aug 10, 3:09 PM CDT | Severe Thunderstorm Warning | OHX | 36 min |
| Aug 10, 3:16 PM CDT | Severe Thunderstorm Warning | OHX | 25 min |
| Aug 13, 4:33 PM CDT | Areal Flood Advisory | OHX | 117 min |
| Aug 14, 6:50 PM CDT | Special Weather Statement | OHX | 40 min |
| Aug 15, 3:49 AM CDT | Dense Fog Advisory | OHX | 5 hr |
| Aug 28, 1:04 PM CDT | Tornado Watch | SPC | 3 hr |
| Aug 28, 1:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Aug 28, 1:55 PM CDT | Special Weather Statement | OHX | 65 min |
| Aug 29, 3:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 29, 3:47 PM CDT | Special Weather Statement | OHX | 28 min |
| Aug 29, 4:08 PM CDT | Severe Thunderstorm Warning | OHX | 37 min |
| Aug 30, 3:15 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 30, 6:50 PM CDT | Special Weather Statement | OHX | 40 min |
| Aug 30, 7:07 PM CDT | Special Weather Statement | OHX | 38 min |
| Sep 1, 5:59 PM CDT | Severe Thunderstorm Warning | OHX | 46 min |
| Sep 13, 4:07 AM CDT | Flash Flood Watch | OHX | 13 hr |
| Sep 13, 9:16 AM CDT | Areal Flood Advisory | OHX | 119 min |
| 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 10, 6:42 PM CDT | Special Weather Statement | OHX | 48 min |
| Oct 12, 3:41 AM CDT | Dense Fog Advisory | OHX | 4 hr |
| Oct 16, 9:50 AM CDT | Frost Advisory | OHX | 22 hr |
| Oct 23, 1:30 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 23, 5:14 PM CDT | Special Weather Statement | OHX | 46 min |
| 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 24, 8:23 PM CST | Wind Advisory | OHX | 19 hr |
| Nov 27, 1:37 AM CST | Dense Fog Advisory | OHX | 8 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 |
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 | 1 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 19 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 4 |
| Flood Watch | 2 |
| Areal Flood Advisory | 9 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 3 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
| 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.