Alert archive / Tennessee / Macon County
Weather alerts in Macon County, Tennessee, 2012
138 weather alerts in 2012, 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 2012. Tap one for its archive.
- Alerts
- 138
- Warnings
- 32
- Watches
- 21
- Advisories
- 31
- Busiest month
- March20 alerts
- Busiest day
- March 2, 201210 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 2012 had a tornado report inside them.
Macon County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 27 | 17 | 37% | 9 | 44% | 25 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Nashville, TN: tornado warnings | 65 | 7 | 89% | 19 | 74% | 17 min |
| NWS Nashville, TN: severe thunderstorm warnings | 381 | 193 | 49% | 531 | 63% | 18 min |
| NWS Nashville, TN: flash flood warnings | 22 | 8 | 64% | 18 | 61% | 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 1, 1:55 PM CST | Wind Advisory | OHX | 28 hr |
| Jan 11, 5:46 AM CST | Areal Flood Advisory | OHX | 50 days |
| Jan 12, 3:21 AM CST | Winter Weather Advisory | OHX | 30 hr |
| Jan 17, 10:33 AM CST | Mesoscale Discussion | SPC | 57 min |
| Jan 17, 12:07 PM CST | Special Weather Statement | OHX | 53 min |
| Jan 17, 12:59 PM CST | Special Weather Statement | OHX | 61 min |
| Jan 21, 3:50 PM CST | Wind Advisory | OHX | 36 hr |
| Jan 21, 5:02 PM CST | Dense Fog Advisory | OHX | 19 hr |
| Jan 22, 10:59 PM CST | Tornado Watch | SPC | 7 hr |
| Jan 23, 12:40 AM CST | Special Weather Statement | OHX | 50 min |
| Jan 23, 1:13 AM CST | Severe Thunderstorm Warning | OHX | 32 min |
| Jan 23, 1:25 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 23, 1:41 AM CST | Severe Thunderstorm Warning | OHX | 34 min |
| Jan 23, 2:09 AM CST | Severe Thunderstorm Warning | OHX | 36 min |
| Feb 18, 3:56 AM CST | Winter Storm Watch | OHX | 25 hr |
| Feb 19, 4:41 AM CST | Winter Storm Warning | OHX | 13 hr |
| Feb 21, 2:40 AM CST | Wind Advisory | OHX | 7 hr |
| Feb 22, 7:14 AM CST | Special Weather Statement | OHX | 61 min |
| Feb 23, 3:48 AM CST | Wind Advisory | OHX | 16 hr |
| Feb 23, 9:46 PM CST | Mesoscale Discussion | SPC | 89 min |
| Feb 29, 2:40 AM CST | Mesoscale Discussion | SPC | 65 min |
| Feb 29, 4:39 AM CST | Tornado Watch | SPC | 7 hr |
| Feb 29, 7:38 AM CST | Mesoscale Discussion | SPC | 67 min |
| Feb 29, 11:11 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 29, 11:31 AM CST | Tornado Watch | SPC | 8 hr |
| Feb 29, 3:34 PM CST | Mesoscale Discussion | SPC | 116 min |
| Mar 2, 4:00 AM CST | Wind Advisory | OHX | 17 hr |
| Mar 2, 6:37 AM CST | Severe Thunderstorm Warning | OHX | 23 min |
| Mar 2, 6:59 AM CST | Special Weather Statement | OHX | 16 min |
| Mar 2, 11:12 AM CST | Flash Flood Watch | OHX | 10 hr |
| Mar 2, 12:05 PM CST | Mesoscale Discussion | SPC | 85 min |
| Mar 2, 1:20 PM CST | Tornado Watch | SPC | 9 hr |
| Mar 2, 1:36 PM CST | Special Weather Statement | OHX | 54 min |
| Mar 2, 2:35 PM CST | Mesoscale Discussion | SPC | 85 min |
| Mar 2, 3:25 PM CST | Mesoscale Discussion | SPC | 65 min |
| Mar 2, 4:24 PM CST | Severe Thunderstorm Warning | OHX | 51 min |
| Mar 7, 12:59 PM CST | Special Weather Statement | OHX | 5 hr |
| Mar 8, 1:22 PM CST | Areal Flood Advisory | OHX | 3 hr |
| Mar 8, 3:58 PM CST | Areal Flood Advisory | OHX | 6 hr |
| Mar 14, 6:55 PM CDT | Severe Thunderstorm Warning | OHX | 35 min |
| Mar 14, 7:35 PM CDT | Special Weather Statement | OHX | 55 min |
| Mar 15, 1:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 15, 2:06 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 15, 2:42 PM CDT | Severe Thunderstorm Warning | OHX | 63 min |
| Mar 15, 3:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Mar 23, 8:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 5, 1:21 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 5, 3:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 6, 1:33 PM CDT | Frost Advisory | OHX | 18 hr |
| Apr 10, 3:56 AM CDT | Frost Advisory | OHX | 27 hr |
| Apr 10, 2:11 PM CDT | Freeze Watch | OHX | 22 hr |
| Apr 11, 3:49 AM CDT | Freeze Warning | OHX | 28 hr |
| Apr 26, 4:07 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 26, 4:56 AM CDT | Severe Thunderstorm Warning | OHX | 34 min |
| Apr 26, 5:22 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 26, 5:24 AM CDT | Severe Thunderstorm Warning | OHX | 51 min |
| Apr 26, 1:23 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 26, 2:11 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 26, 3:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 26, 3:40 PM CDT | Severe Thunderstorm Warning | OHX | 65 min |
| Apr 26, 4:43 PM CDT | Severe Thunderstorm Warning | OHX | 32 min |
| Apr 26, 5:40 PM CDT | Mesoscale Discussion | SPC | 95 min |
| May 1, 12:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| May 5, 2:49 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 5, 4:07 AM CDT | Special Weather Statement | OHX | 53 min |
| May 5, 5:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| May 5, 5:28 AM CDT | Special Weather Statement | OHX | 62 min |
| May 13, 10:16 AM CDT | Areal Flood Advisory | OHX | 6 hr |
| May 13, 10:04 PM CDT | Areal Flood Advisory | OHX | 6 hr |
| May 30, 4:09 AM CDT | Dense Fog Advisory | OHX | 4 hr |
| May 31, 5:30 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 31, 8:49 PM CDT | Severe Thunderstorm Warning | OHX | 26 min |
| May 31, 8:57 PM CDT | Severe Thunderstorm Warning | OHX | 20 min |
| Jun 11, 1:12 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 11, 1:28 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 3:36 AM CDT | Heat Advisory | OHX | 4 days |
| Jul 2, 5:16 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 3:20 AM CDT | Heat Advisory | OHX | 64 hr |
| Jul 8, 6:08 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 8, 6:25 PM CDT | Severe Thunderstorm Warning | OHX | 35 min |
| Jul 8, 6:43 PM CDT | Severe Thunderstorm Warning | OHX | 36 min |
| Jul 8, 6:52 PM CDT | Severe Thunderstorm Warning | OHX | 27 min |
| Jul 14, 10:33 AM CDT | Areal Flood Advisory | OHX | 8 hr |
| Jul 19, 6:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jul 19, 7:35 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 19, 8:51 PM CDT | Severe Thunderstorm Warning | OHX | 54 min |
| Jul 19, 9:23 PM CDT | Severe Thunderstorm Warning | OHX | 37 min |
| Jul 19, 9:36 PM CDT | Special Weather Statement | LMK | 29 min |
| Jul 19, 9:46 PM CDT | Severe Thunderstorm Warning | OHX | 29 min |
| Jul 19, 9:57 PM CDT | Severe Thunderstorm Warning | OHX | 33 min |
| Jul 19, 10:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Aug 1, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 1, 3:58 PM CDT | Severe Thunderstorm Warning | OHX | 29 min |
| Aug 3, 3:11 AM CDT | Special Weather Statement | OHX | 49 min |
| Aug 3, 3:32 AM CDT | Severe Thunderstorm Warning | OHX | 28 min |
| Aug 4, 2:36 PM CDT | Special Weather Statement | OHX | 54 min |
| Aug 5, 12:09 PM CDT | Areal Flood Advisory | OHX | 111 min |
| Aug 9, 9:58 AM CDT | Severe Thunderstorm Warning | OHX | 17 min |
| Aug 9, 10:13 AM CDT | Severe Thunderstorm Warning | OHX | 17 min |
| Aug 13, 10:30 AM CDT | Severe Thunderstorm Warning | OHX | 45 min |
| Aug 16, 9:26 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 16, 10:20 PM CDT | Special Weather Statement | OHX | 40 min |
| Aug 16, 10:29 PM CDT | Severe Thunderstorm Warning | OHX | 46 min |
| Sep 1, 4:30 PM CDT | Tornado Warning | OHX | 30 min |
| Sep 2, 2:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Sep 2, 2:49 PM CDT | Tornado Watch | SPC | 7 hr |
| Sep 2, 6:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Sep 5, 5:27 PM CDT | Special Weather Statement | OHX | 63 min |
| Sep 5, 5:31 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Sep 6, 5:12 AM CDT | Dense Fog Advisory | OHX | 3 hr |
| Sep 7, 8:10 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 7, 11:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Sep 8, 1:28 AM CDT | Special Weather Statement | OHX | 32 min |
| Sep 8, 2:01 AM CDT | Special Weather Statement | OHX | 29 min |
| Sep 17, 2:48 AM CDT | Flood Watch | OHX | 27 hr |
| Oct 8, 2:56 PM CDT | Frost Advisory | OHX | 17 hr |
| Oct 10, 3:55 AM CDT | Frost Advisory | OHX | 28 hr |
| Oct 14, 7:13 AM CDT | Wind Advisory | OHX | 15 hr |
| Oct 29, 3:48 PM CDT | Wind Advisory | OHX | 27 hr |
| Oct 30, 2:57 PM CDT | Freeze Warning | OHX | 12 hr |
| Oct 31, 3:09 AM CDT | Freeze Watch | OHX | 8 hr |
| Oct 31, 11:00 AM CDT | Freeze Warning | OHX | 21 hr |
| Nov 3, 5:45 PM CDT | Special Weather Statement | OHX | 30 min |
| Nov 8, 5:27 AM CST | Dense Fog Advisory | OHX | 4 hr |
| Nov 11, 3:42 AM CST | Wind Advisory | OHX | 20 hr |
| Nov 13, 12:53 AM CST | Freezing Fog Advisory | OHX | 8 hr |
| Dec 17, 11:03 AM CST | Mesoscale Discussion | SPC | 117 min |
| Dec 17, 11:26 AM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Dec 17, 12:58 PM CST | Mesoscale Discussion | SPC | 92 min |
| Dec 17, 2:33 PM CST | Special Weather Statement | OHX | 27 min |
| Dec 17, 2:53 PM CST | Severe Thunderstorm Warning | OHX | 37 min |
| Dec 17, 3:04 PM CST | Special Weather Statement | OHX | 56 min |
| Dec 17, 3:42 PM CST | Mesoscale Discussion | SPC | 93 min |
| Dec 19, 10:01 AM CST | Wind Advisory | OHX | 54 hr |
| Dec 25, 11:04 AM CST | Wind Advisory | OHX | 24 hr |
| Dec 25, 3:11 PM CST | Winter Weather Advisory | OHX | 20 hr |
| Dec 29, 6:16 PM CST | Winter Weather Advisory | OHX | 5 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 | 27 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 11 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 34 |
| Special Weather Statement | 20 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 1 |
| Areal Flood Advisory | 7 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 3 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 10 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.