Alert archive / Tennessee / Macon County
Weather alerts in Macon County, Tennessee, 2017
111 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 111
- Warnings
- 26
- Watches
- 18
- Advisories
- 29
- Busiest month
- March27 alerts
- Busiest day
- April 5, 20178 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 2 tornado warnings covering Macon County in 2017 had a tornado report inside them.
Macon County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 17 | 10 | 41% | 6 | 67% | 15 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Nashville, TN: tornado warnings | 47 | 8 | 83% | 25 | 40% | 16 min |
| NWS Nashville, TN: severe thunderstorm warnings | 211 | 135 | 36% | 558 | 76% | 16 min |
| NWS Nashville, TN: flash flood warnings | 35 | 28 | 20% | 110 | 65% | 118 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, 7:26 PM CST | Dense Fog Advisory | OHX | 14 hr |
| Jan 4, 2:32 PM CST | Winter Weather Advisory | OHX | 33 hr |
| Jan 7, 3:18 AM CST | Wind Chill Advisory | OHX | 6 hr |
| Jan 9, 6:48 PM CST | Wind Advisory | OHX | 23 hr |
| Jan 13, 10:21 PM CST | Dense Fog Advisory | OHX | 11 hr |
| Jan 15, 10:41 PM CST | Dense Fog Advisory | OHX | 10 hr |
| Jan 22, 10:13 PM CST | Wind Advisory | OHX | 14 hr |
| Feb 7, 7:28 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 8, 3:02 PM CST | Mesoscale Discussion | SPC | 118 min |
| Feb 24, 5:28 PM CST | Mesoscale Discussion | SPC | 62 min |
| Feb 24, 8:50 PM CST | Mesoscale Discussion | SPC | 85 min |
| Mar 1, 4:19 AM CST | Mesoscale Discussion | SPC | 56 min |
| Mar 1, 4:57 AM CST | Tornado Watch | SPC | 5 hr |
| Mar 1, 5:28 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 1, 7:26 AM CST | Severe Thunderstorm Warning | OHX | 34 min |
| Mar 1, 7:28 AM CST | Mesoscale Discussion | SPC | 92 min |
| Mar 1, 7:49 AM CST | Tornado Warning | OHX | 26 min |
| Mar 1, 7:58 AM CST | Severe Thunderstorm Warning | OHX | 32 min |
| Mar 7, 12:37 AM CST | Wind Advisory | OHX | 10 hr |
| Mar 9, 7:58 PM CST | Mesoscale Discussion | SPC | 92 min |
| Mar 9, 8:38 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 9, 10:42 PM CST | Mesoscale Discussion | SPC | 63 min |
| Mar 10, 11:27 AM CST | Freeze Warning | OHX | 21 hr |
| Mar 11, 3:44 AM CST | Freeze Warning | OHX | 26 hr |
| Mar 11, 7:33 AM CST | Winter Weather Advisory | OHX | 4 hr |
| Mar 12, 2:40 PM CDT | Freeze Warning | OHX | 16 hr |
| Mar 13, 3:06 PM CDT | Freeze Warning | OHX | 43 hr |
| Mar 15, 2:23 AM CDT | Freeze Warning | OHX | 32 hr |
| Mar 27, 11:26 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 27, 1:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 2:24 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Mar 27, 4:14 PM CDT | Severe Thunderstorm Warning | OHX | 31 min |
| Mar 27, 4:38 PM CDT | Severe Thunderstorm Warning | OHX | 37 min |
| Mar 27, 4:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Mar 27, 5:59 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Mar 29, 2:37 PM CDT | Wind Advisory | OHX | 13 hr |
| Mar 30, 5:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Mar 30, 8:06 PM CDT | Special Weather Statement | OHX | 39 min |
| Apr 3, 9:15 AM CDT | Wind Advisory | OHX | 6 hr |
| Apr 5, 1:02 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 1:50 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 5, 3:51 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 5, 4:02 PM CDT | Wind Advisory | OHX | 29 hr |
| Apr 5, 4:36 PM CDT | Severe Thunderstorm Warning | OHX | 24 min |
| Apr 5, 4:51 PM CDT | Severe Thunderstorm Warning | OHX | 24 min |
| Apr 5, 5:12 PM CDT | Severe Thunderstorm Warning | OHX | 33 min |
| Apr 5, 5:14 PM CDT | Special Weather Statement | OHX | 31 min |
| Apr 7, 3:30 AM CDT | Freeze Warning | OHX | 29 hr |
| Apr 11, 3:15 PM CDT | Special Weather Statement | LMK | 30 min |
| Apr 21, 8:20 PM CDT | Flash Flood Watch | OHX | 31 hr |
| Apr 24, 6:49 PM CDT | Dense Fog Advisory | OHX | 14 hr |
| Apr 28, 2:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 30, 2:12 AM CDT | Wind Advisory | OHX | 19 hr |
| Apr 30, 1:36 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 30, 3:29 PM CDT | Severe Thunderstorm Warning | OHX | 31 min |
| Apr 30, 9:05 PM CDT | Wind Advisory | OHX | 22 hr |
| May 11, 7:38 PM CDT | Special Weather Statement | OHX | 52 min |
| May 11, 8:48 PM CDT | Areal Flood Advisory | OHX | 117 min |
| May 11, 9:37 PM CDT | Special Weather Statement | OHX | 38 min |
| May 11, 9:39 PM CDT | Flash Flood Watch | OHX | 5 hr |
| May 19, 6:18 AM CDT | Special Weather Statement | OHX | 42 min |
| May 19, 6:44 AM CDT | Areal Flood Advisory | OHX | 3 hr |
| May 20, 3:23 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 24, 11:47 AM CDT | Mesoscale Discussion | SPC | 58 min |
| May 24, 11:54 AM CDT | Severe Thunderstorm Warning | OHX | 36 min |
| May 24, 12:19 PM CDT | Severe Thunderstorm Warning | OHX | 26 min |
| May 27, 9:13 AM CDT | Mesoscale Discussion | SPC | 92 min |
| May 27, 12:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 27, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 27, 3:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 27, 5:13 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 27, 5:51 PM CDT | Special Weather Statement | OHX | 24 min |
| May 27, 6:51 PM CDT | Severe Thunderstorm Warning | OHX | 24 min |
| May 27, 7:15 PM CDT | Severe Thunderstorm Warning | OHX | 30 min |
| May 27, 7:43 PM CDT | Severe Thunderstorm Warning | OHX | 32 min |
| Jun 4, 9:09 PM CDT | Flash Flood Watch | OHX | 18 hr |
| Jun 4, 10:16 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jun 6, 2:50 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| Jun 15, 10:59 AM CDT | Special Weather Statement | OHX | 46 min |
| Jun 15, 11:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 16, 1:58 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| Jun 18, 1:57 PM CDT | Severe Thunderstorm Warning | OHX | 33 min |
| Jun 18, 2:19 PM CDT | Flash Flood Watch | OHX | 13 hr |
| Jun 22, 2:09 PM CDT | Flash Flood Watch | OHX | 26 hr |
| Jun 23, 10:54 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 23, 12:16 PM CDT | Tornado Watch | SPC | 6 hr |
| Jul 1, 12:18 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 2, 4:26 PM CDT | Special Weather Statement | OHX | 49 min |
| Jul 6, 3:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jul 20, 3:43 AM CDT | Heat Advisory | OHX | 4 days |
| Aug 6, 4:07 PM CDT | Special Weather Statement | OHX | 53 min |
| Aug 6, 4:18 PM CDT | Severe Thunderstorm Warning | OHX | 27 min |
| Aug 30, 2:46 PM CDT | Flash Flood Watch | OHX | 46 hr |
| Aug 31, 11:42 PM CDT | Wind Advisory | OHX | 16 hr |
| Sep 10, 3:04 PM CDT | Wind Advisory | OHX | 40 hr |
| Sep 15, 2:27 AM CDT | Dense Fog Advisory | OHX | 7 hr |
| Sep 20, 5:00 PM CDT | Severe Thunderstorm Warning | OHX | 24 min |
| Oct 13, 5:15 AM CDT | Dense Fog Advisory | OHX | 4 hr |
| Oct 24, 2:37 PM CDT | Frost Advisory | OHX | 18 hr |
| Oct 25, 2:48 AM CDT | Frost Advisory | OHX | 29 hr |
| Oct 28, 2:53 PM CDT | Freeze Watch | OHX | 13 hr |
| Oct 29, 3:38 AM CDT | Freeze Warning | OHX | 29 hr |
| Nov 4, 12:45 AM CDT | Dense Fog Advisory | OHX | 8 hr |
| Nov 17, 2:50 PM CST | Wind Advisory | OHX | 33 hr |
| Nov 18, 12:35 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Nov 18, 3:18 PM CST | Mesoscale Discussion | SPC | 117 min |
| Nov 18, 5:07 PM CST | Tornado Warning | OHX | 11 min |
| Nov 18, 5:09 PM CST | Severe Thunderstorm Warning | OHX | 36 min |
| Nov 18, 5:24 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 21, 1:46 PM CST | Flash Flood Watch | OHX | 43 hr |
| Dec 23, 3:41 AM CST | Special Weather Statement | OHX | 49 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 | 17 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 11 |
| Flooding | |
| Flash Flood Watch | 7 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 7 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 11 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.