Alert archive / Tennessee / Marion County
Weather alerts in Marion County, Tennessee, 2015
133 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Marion County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 133
- Warnings
- 26
- Watches
- 21
- Advisories
- 33
- Busiest month
- July26 alerts
- Busiest day
- July 14, 20158 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Marion County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 8 | 5 | 38% | 3 | 100% | 33 min |
| Flash flood warnings | 3 | 1 | 67% | 1 | 100% | 12 min |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 2 | 0 | 100% | 0 | ||
| NWS Morristown, TN: severe thunderstorm warnings | 170 | 127 | 25% | 196 | 93% | 22 min |
| NWS Morristown, TN: flash flood warnings | 18 | 8 | 56% | 14 | 71% | 45 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 7, 10:00 AM CST | Wind Chill Advisory | MRX | 23 hr |
| Jan 16, 2:27 AM CST | Freezing Fog Advisory | MRX | 6 hr |
| Jan 16, 8:08 AM CST | Freezing Fog Advisory | MRX | 112 min |
| Feb 14, 2:33 AM CST | Wind Chill Advisory | MRX | 32 hr |
| Feb 14, 2:52 PM CST | Winter Storm Watch | MRX | 24 hr |
| Feb 15, 4:25 AM CST | Winter Storm Warning | MRX | 47 hr |
| Feb 17, 2:27 PM CST | Wind Chill Watch | MRX | 25 hr |
| Feb 17, 2:27 PM CST | Winter Weather Advisory | MRX | 39 hr |
| Feb 18, 3:02 PM CST | Wind Chill Advisory | MRX | 24 hr |
| Feb 18, 3:02 PM CST | Winter Storm Watch | MRX | 37 hr |
| Feb 20, 3:59 AM CST | Winter Storm Warning | MRX | 38 hr |
| Feb 21, 6:37 PM CST | Areal Flood Advisory | MRX | 3 hr |
| Feb 21, 9:26 PM CST | Areal Flood Advisory | MRX | 3 hr |
| Feb 22, 4:35 AM CST | Dense Fog Advisory | MRX | 4 hr |
| Feb 23, 3:02 AM CST | Winter Weather Advisory | MRX | 6 hr |
| Feb 23, 2:11 PM CST | Winter Weather Advisory | MRX | 25 hr |
| Feb 24, 3:29 AM CST | Winter Storm Watch | MRX | 23 hr |
| Feb 24, 8:59 PM CST | Winter Storm Warning | MRX | 33 hr |
| Mar 3, 2:49 PM CST | Winter Storm Watch | MRX | 23 hr |
| Mar 4, 2:30 AM CST | Winter Storm Warning | MRX | 36 hr |
| Mar 4, 12:06 PM CST | Wind Advisory | MRX | 6 hr |
| Mar 26, 2:23 PM CDT | Freeze Watch | MRX | 13 hr |
| Mar 27, 3:13 AM CDT | Freeze Watch | MRX | 24 hr |
| Mar 27, 3:13 AM CDT | Freeze Warning | MRX | 31 hr |
| Mar 28, 3:04 AM CDT | Hard Freeze Warning | MRX | 31 hr |
| Apr 2, 1:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Apr 3, 2:56 AM CDT | Wind Advisory | MRX | 19 hr |
| Apr 3, 3:10 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 3, 7:27 PM CDT | Severe Thunderstorm Warning | MRX | 48 min |
| Apr 3, 8:13 PM CDT | Severe Thunderstorm Warning | MRX | 47 min |
| Apr 4, 2:04 AM CDT | Frost Advisory | MRX | 30 hr |
| Apr 8, 2:21 AM CDT | Dense Fog Advisory | MRX | 7 hr |
| Apr 10, 1:54 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Apr 10, 4:14 AM CDT | Special Weather Statement | MRX | 61 min |
| Apr 16, 8:53 AM CDT | Special Weather Statement | MRX | 37 min |
| Apr 16, 10:52 AM CDT | Areal Flood Advisory | MRX | 3 hr |
| Apr 16, 12:45 PM CDT | Flash Flood Warning | MRX | 3 hr |
| Apr 18, 5:03 AM CDT | Dense Fog Advisory | MRX | 4 hr |
| Apr 19, 1:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 19, 5:25 PM CDT | Mesoscale Discussion | SPC | 95 min |
| Apr 19, 5:29 PM CDT | Special Weather Statement | MRX | 46 min |
| Apr 20, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 20, 2:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 20, 2:44 AM CDT | Severe Thunderstorm Warning | MRX | 46 min |
| Apr 22, 7:11 PM CDT | Special Weather Statement | MRX | 64 min |
| May 15, 1:16 PM CDT | Areal Flood Advisory | MRX | 119 min |
| May 25, 4:23 PM CDT | Special Weather Statement | MRX | 52 min |
| May 27, 5:42 PM CDT | Special Weather Statement | MRX | 48 min |
| May 31, 3:06 PM CDT | Special Weather Statement | MRX | 39 min |
| May 31, 3:18 PM CDT | Areal Flood Advisory | MRX | 3 hr |
| May 31, 3:55 PM CDT | Special Weather Statement | MRX | 50 min |
| Jun 8, 12:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 8, 1:40 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 8, 2:17 PM CDT | Special Weather Statement | MRX | 43 min |
| Jun 8, 3:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 8, 5:14 PM CDT | Severe Thunderstorm Warning | MRX | 61 min |
| Jun 8, 5:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 8, 11:50 PM CDT | Special Weather Statement | MRX | 40 min |
| Jun 11, 6:45 PM CDT | Special Weather Statement | MRX | 30 min |
| Jun 17, 11:51 PM CDT | Special Weather Statement | MRX | 39 min |
| Jun 17, 11:59 PM CDT | Severe Thunderstorm Warning | MRX | 38 min |
| Jun 24, 2:39 PM CDT | Severe Thunderstorm Warning | MRX | 66 min |
| Jun 26, 3:47 PM CDT | Special Weather Statement | MRX | 43 min |
| Jun 26, 4:32 PM CDT | Special Weather Statement | MRX | 43 min |
| Jun 26, 4:48 PM CDT | Flash Flood Warning | MRX | 117 min |
| Jun 26, 4:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 30, 11:25 AM CDT | Special Weather Statement | MRX | 50 min |
| Jun 30, 12:37 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 1, 11:29 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jul 1, 11:45 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 1, 1:16 PM CDT | Special Weather Statement | MRX | 44 min |
| Jul 1, 2:28 PM CDT | Special Weather Statement | MRX | 47 min |
| Jul 1, 3:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Jul 2, 10:08 AM CDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 2, 4:56 PM CDT | Flood Watch | MRX | 63 min |
| Jul 2, 5:46 PM CDT | Special Weather Statement | MRX | 59 min |
| Jul 2, 5:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 2, 5:59 PM CDT | Flash Flood Watch | MRX | 3 days |
| Jul 3, 12:29 AM CDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 3, 10:18 AM CDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 3, 11:39 AM CDT | Special Weather Statement | MRX | 36 min |
| Jul 12, 12:37 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 5:55 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 14, 12:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 14, 1:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 2:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 14, 3:55 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jul 14, 4:27 PM CDT | Severe Thunderstorm Warning | MRX | 63 min |
| Jul 14, 4:48 PM CDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 14, 5:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 5:27 PM CDT | Severe Thunderstorm Warning | MRX | 48 min |
| Jul 20, 1:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jul 22, 2:34 PM CDT | Special Weather Statement | MRX | 41 min |
| Jul 22, 2:51 PM CDT | Special Weather Statement | MRX | 39 min |
| Aug 5, 6:42 PM CDT | Special Weather Statement | MRX | 33 min |
| Aug 10, 1:21 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 1:40 PM CDT | Special Weather Statement | MRX | 35 min |
| Aug 19, 3:28 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 7:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 5:13 PM CDT | Areal Flood Advisory | MRX | 2 hr |
| Sep 11, 4:53 PM CDT | Special Weather Statement | MRX | 52 min |
| Oct 12, 4:21 AM CDT | Dense Fog Advisory | MRX | 5 hr |
| Oct 17, 2:36 AM CDT | Frost Advisory | MRX | 29 hr |
| Oct 18, 1:49 PM CDT | Frost Advisory | MRX | 19 hr |
| Nov 13, 1:48 AM CST | Freeze Watch | MRX | 10 hr |
| Nov 13, 12:12 PM CST | Freeze Warning | MRX | 20 hr |
| Nov 14, 2:02 PM CST | Freeze Warning | MRX | 18 hr |
| Nov 17, 2:35 AM CST | Wind Advisory | MRX | 43 hr |
| Nov 18, 11:27 AM CST | Special Weather Statement | MRX | 48 min |
| Nov 18, 12:15 PM CST | Special Weather Statement | MRX | 60 min |
| Nov 30, 2:34 AM CST | Flood Watch | MRX | 59 hr |
| Nov 30, 10:24 AM CST | River Flood Warning | MRX | 4 days |
| Dec 1, 7:43 PM CST | Areal Flood Warning | MRX | 3 hr |
| Dec 1, 10:43 PM CST | Areal Flood Warning | MRX | 3 hr |
| Dec 10, 2:44 AM CST | Dense Fog Advisory | MRX | 7 hr |
| Dec 13, 2:53 AM CST | Wind Advisory | MRX | 36 hr |
| Dec 23, 4:26 PM CST | Mesoscale Discussion | SPC | 64 min |
| Dec 23, 7:37 PM CST | Special Weather Statement | MRX | 38 min |
| Dec 23, 10:11 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 23, 10:33 PM CST | Tornado Watch | SPC | 5 hr |
| Dec 23, 11:15 PM CST | Special Weather Statement | MRX | 45 min |
| Dec 24, 12:49 AM CST | Special Weather Statement | MRX | 41 min |
| Dec 24, 2:09 PM CST | Flood Watch | MRX | 44 hr |
| Dec 24, 8:34 PM CST | River Flood Warning | MRX | 4 days |
| Dec 25, 9:24 AM CST | Areal Flood Advisory | MRX | 3 hr |
| Dec 25, 9:41 AM CST | Special Weather Statement | MRX | 49 min |
| Dec 25, 9:49 AM CST | Flash Flood Warning | MRX | 3 hr |
| Dec 25, 12:42 PM CST | Areal Flood Warning | MRX | 15 hr |
| Dec 26, 3:52 AM CST | Areal Flood Warning | MRX | 6 hr |
| Dec 27, 5:20 PM CST | Flash Flood Watch | MRX | 45 hr |
| Dec 28, 2:14 AM CST | Wind Advisory | MRX | 23 hr |
| Dec 28, 2:24 PM CST | Areal Flood Advisory | MRX | 4 hr |
| Dec 29, 9:24 AM CST | River Flood Warning | MRX | 21 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.