Alert archive / Tennessee / Macon County
Weather alerts in Macon County, Tennessee, 2018
127 weather alerts in 2018, 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 2018. Tap one for its archive.
- Alerts
- 127
- Warnings
- 36
- Watches
- 13
- Advisories
- 43
- Busiest month
- June24 alerts
- Busiest day
- June 27, 201812 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Macon County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 21 | 14 | 33% | 9 | 78% | 15 min |
| Flash flood warnings | 6 | 3 | 50% | 7 | 86% | 24 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Nashville, TN: tornado warnings | 32 | 10 | 69% | 20 | 70% | 15 min |
| NWS Nashville, TN: severe thunderstorm warnings | 183 | 100 | 45% | 394 | 61% | 15 min |
| NWS Nashville, TN: flash flood warnings | 32 | 18 | 44% | 61 | 72% | 73 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 3, 10:49 AM CST | Wind Chill Advisory | OHX | 22 hr |
| Jan 7, 3:31 AM CST | Winter Weather Advisory | OHX | 29 hr |
| Jan 8, 7:12 PM CST | Dense Fog Advisory | OHX | 14 hr |
| Jan 10, 12:59 AM CST | Dense Fog Advisory | OHX | 8 hr |
| Jan 11, 3:41 AM CST | Winter Weather Advisory | OHX | 47 hr |
| Jan 12, 7:51 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 15, 3:54 AM CST | Winter Weather Advisory | OHX | 35 hr |
| Jan 16, 4:09 AM CST | Wind Chill Advisory | OHX | 32 hr |
| Feb 9, 3:24 AM CST | Flood Watch | OHX | 60 hr |
| Feb 10, 10:22 AM CST | Areal Flood Advisory | OHX | 5 hr |
| Feb 10, 3:27 PM CST | Areal Flood Advisory | OHX | 9 hr |
| Feb 17, 12:02 PM CST | Areal Flood Advisory | OHX | 3 hr |
| Feb 18, 1:15 AM CST | Dense Fog Advisory | OHX | 8 hr |
| Feb 20, 2:32 PM CST | Flood Watch | OHX | 5 days |
| Feb 22, 8:20 PM CST | Dense Fog Advisory | OHX | 6 hr |
| Feb 24, 6:40 PM CST | Mesoscale Discussion | SPC | 95 min |
| Feb 24, 8:29 PM CST | Tornado Watch | SPC | 5 hr |
| Feb 24, 9:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Feb 24, 9:59 PM CST | Severe Thunderstorm Warning | OHX | 31 min |
| Feb 24, 9:59 PM CST | Mesoscale Discussion | SPC | 91 min |
| Feb 24, 10:41 PM CST | Severe Thunderstorm Warning | OHX | 49 min |
| Feb 24, 11:27 PM CST | Severe Thunderstorm Warning | OHX | 48 min |
| Feb 27, 3:16 AM CST | Flood Watch | OHX | 57 hr |
| Mar 11, 2:43 PM CDT | Winter Weather Advisory | OHX | 19 hr |
| Mar 19, 3:40 PM CDT | Tornado Watch | SPC | 5 hr |
| Mar 19, 6:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Mar 20, 2:04 AM CDT | Freeze Warning | OHX | 32 hr |
| Mar 20, 2:59 AM CDT | Winter Weather Advisory | OHX | 31 hr |
| Mar 21, 2:06 AM CDT | Freeze Warning | OHX | 31 hr |
| Mar 28, 1:51 AM CDT | Flood Watch | OHX | 38 hr |
| Mar 29, 2:42 AM CDT | Flash Flood Warning | OHX | 6 hr |
| Apr 2, 2:26 PM CDT | Wind Advisory | OHX | 32 hr |
| Apr 3, 7:14 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 3, 9:26 PM CDT | Severe Thunderstorm Warning | OHX | 34 min |
| Apr 4, 2:47 AM CDT | Freeze Warning | OHX | 30 hr |
| Apr 6, 6:38 PM CDT | Freeze Watch | OHX | 8 hr |
| Apr 7, 2:59 AM CDT | Freeze Warning | OHX | 29 hr |
| Apr 10, 3:02 PM CDT | Frost Advisory | OHX | 17 hr |
| Apr 15, 3:46 PM CDT | Freeze Watch | OHX | 13 hr |
| Apr 15, 3:46 PM CDT | Freeze Warning | OHX | 16 hr |
| Apr 16, 4:39 AM CDT | Freeze Warning | OHX | 27 hr |
| Apr 19, 2:55 AM CDT | Frost Advisory | OHX | 29 hr |
| Apr 23, 5:07 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| May 16, 3:16 PM CDT | Areal Flood Advisory | OHX | 119 min |
| May 18, 7:52 PM CDT | Severe Thunderstorm Warning | OHX | 23 min |
| May 20, 6:38 PM CDT | Severe Thunderstorm Warning | OHX | 37 min |
| May 20, 7:28 PM CDT | Severe Thunderstorm Warning | OHX | 32 min |
| May 20, 7:58 PM CDT | Flash Flood Warning | OHX | 3 hr |
| May 20, 7:59 PM CDT | Severe Thunderstorm Warning | OHX | 14 min |
| May 22, 3:59 PM CDT | Special Weather Statement | OHX | 46 min |
| May 28, 2:04 AM CDT | Flash Flood Watch | OHX | 52 hr |
| May 29, 1:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 31, 1:28 PM CDT | Special Weather Statement | OHX | 32 min |
| May 31, 2:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| May 31, 4:02 PM CDT | Severe Thunderstorm Warning | OHX | 43 min |
| May 31, 6:18 PM CDT | Special Weather Statement | OHX | 42 min |
| May 31, 6:29 PM CDT | Severe Thunderstorm Warning | OHX | 25 min |
| Jun 1, 2:55 AM CDT | Special Weather Statement | OHX | 65 min |
| Jun 11, 7:24 PM CDT | Severe Thunderstorm Warning | OHX | 33 min |
| Jun 11, 7:32 PM CDT | Areal Flood Advisory | OHX | 118 min |
| Jun 12, 1:26 PM CDT | Mesoscale Discussion | SPC | 109 min |
| Jun 17, 5:19 PM CDT | Special Weather Statement | OHX | 41 min |
| Jun 24, 7:34 PM CDT | Special Weather Statement | OHX | 26 min |
| Jun 24, 7:39 PM CDT | Severe Thunderstorm Warning | OHX | 16 min |
| Jun 26, 12:30 PM CDT | Special Weather Statement | OHX | 30 min |
| Jun 26, 1:25 PM CDT | Special Weather Statement | OHX | 50 min |
| Jun 26, 2:22 PM CDT | Severe Thunderstorm Warning | OHX | 53 min |
| Jun 26, 11:14 PM CDT | Special Weather Statement | OHX | 46 min |
| Jun 27, 7:48 AM CDT | Areal Flood Advisory | OHX | 117 min |
| Jun 27, 8:44 AM CDT | Areal Flood Advisory | OHX | 2 hr |
| Jun 27, 1:29 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 27, 2:15 PM CDT | Special Weather Statement | OHX | 60 min |
| Jun 27, 2:31 PM CDT | Severe Thunderstorm Warning | OHX | 29 min |
| Jun 27, 2:58 PM CDT | Severe Thunderstorm Warning | OHX | 47 min |
| Jun 27, 3:35 PM CDT | Flash Flood Warning | OHX | 115 min |
| Jun 27, 3:36 PM CDT | Special Weather Statement | OHX | 39 min |
| Jun 27, 4:24 PM CDT | Severe Thunderstorm Warning | OHX | 36 min |
| Jun 27, 4:54 PM CDT | Severe Thunderstorm Warning | OHX | 36 min |
| Jun 27, 5:17 PM CDT | Flash Flood Warning | OHX | 3 hr |
| Jun 27, 11:00 PM CDT | Special Weather Statement | OHX | 30 min |
| Jun 28, 2:00 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 4, 3:19 AM CDT | Heat Advisory | OHX | 17 hr |
| Jul 5, 3:14 AM CDT | Heat Advisory | OHX | 17 hr |
| Jul 20, 5:54 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 20, 6:22 PM CDT | Tornado Watch | SPC | 8 hr |
| Jul 20, 10:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 21, 12:15 AM CDT | Special Weather Statement | OHX | 45 min |
| Jul 21, 1:38 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Jul 21, 2:55 AM CDT | Special Weather Statement | OHX | 65 min |
| Jul 30, 6:30 PM CDT | Special Weather Statement | OHX | 45 min |
| Jul 30, 6:53 PM CDT | Severe Thunderstorm Warning | OHX | 15 min |
| Aug 11, 2:53 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| Aug 16, 12:34 PM CDT | Special Weather Statement | OHX | 41 min |
| Aug 17, 5:18 AM CDT | Areal Flood Advisory | OHX | 3 hr |
| Aug 17, 5:45 AM CDT | Flash Flood Warning | OHX | 3 hr |
| Aug 17, 8:30 AM CDT | Areal Flood Advisory | OHX | 60 min |
| Aug 21, 12:08 AM CDT | Severe Thunderstorm Warning | OHX | 37 min |
| Aug 21, 12:13 AM CDT | Severe Thunderstorm Warning | OHX | 47 min |
| Sep 23, 3:03 PM CDT | Flash Flood Watch | OHX | 28 hr |
| Sep 24, 2:58 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Sep 24, 3:54 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 24, 6:24 PM CDT | Areal Flood Advisory | OHX | 2 hr |
| Sep 28, 2:23 AM CDT | Dense Fog Advisory | OHX | 8 hr |
| Oct 1, 1:08 PM CDT | Special Weather Statement | OHX | 22 min |
| Oct 2, 8:07 AM CDT | Areal Flood Advisory | OHX | 113 min |
| Oct 2, 9:16 AM CDT | Flash Flood Warning | OHX | 3 hr |
| Oct 15, 8:00 AM CDT | Areal Flood Advisory | OHX | 2 hr |
| Oct 20, 1:27 PM CDT | Frost Advisory | OHX | 20 hr |
| Oct 20, 1:27 PM CDT | Freeze Warning | OHX | 20 hr |
| Oct 21, 2:52 AM CDT | Freeze Warning | OHX | 29 hr |
| Nov 5, 7:04 PM CST | Tornado Watch | SPC | 8 hr |
| Nov 6, 12:02 AM CST | Areal Flood Advisory | OHX | 118 min |
| Nov 8, 9:50 AM CST | Freeze Warning | OHX | 49 hr |
| Nov 21, 5:08 AM CST | Freezing Fog Advisory | OHX | 4 hr |
| Nov 25, 12:19 AM CST | Dense Fog Advisory | OHX | 8 hr |
| Nov 25, 6:49 PM CST | Wind Advisory | OHX | 11 hr |
| Dec 8, 3:46 AM CST | Winter Weather Advisory | OHX | 32 hr |
| Dec 8, 9:43 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 11, 4:34 AM CST | Freezing Fog Advisory | OHX | 4 hr |
| Dec 16, 11:43 PM CST | Dense Fog Advisory | OHX | 9 hr |
| Dec 23, 11:58 PM CST | Freezing Fog Advisory | OHX | 10 hr |
| Dec 26, 4:11 AM CST | Wind Advisory | OHX | 46 hr |
| Dec 31, 1:06 AM CST | Wind Advisory | OHX | 17 hr |
| Dec 31, 1:54 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 31, 2:25 PM CST | Severe Thunderstorm Warning | OHX | 35 min |
| Dec 31, 2:53 PM CST | Special Weather Statement | OHX | 52 min |
| Dec 31, 3:46 PM CST | Special Weather Statement | OHX | 29 min |
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 | 21 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 19 |
| Flooding | |
| Flash Flood Warning | 6 |
| Flash Flood Watch | 2 |
| Flood Watch | 4 |
| Areal Flood Advisory | 15 |
| Winter | |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 9 |
| Freeze Watch | 2 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 4 |
| 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 archive20172019
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.