Alert archive / Tennessee / Union County
Weather alerts in Union County, Tennessee, 2014
108 weather alerts in 2014, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Union County and its neighbors
Each county as a circle sized by its count in 2014. Tap one for its archive.
- Alerts
- 108
- Warnings
- 25
- Watches
- 19
- Advisories
- 29
- Busiest month
- April20 alerts
- Busiest day
- July 27, 20148 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 3 tornado warnings covering Union County in 2014 had a tornado report inside them.
Union County, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 16 | 12 | 25% | 5 | 60% | 22 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 29 | 3 | 90% | 9 | 78% | 22 min |
| NWS Morristown, TN: severe thunderstorm warnings | 191 | 149 | 22% | 291 | 79% | 23 min |
| NWS Morristown, TN: flash flood warnings | 10 | 5 | 50% | 10 | 80% | 44 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 3:15 PM EST | Winter Weather Advisory | MRX | 40 hr |
| Jan 5, 5:15 AM EST | Winter Weather Advisory | MRX | 37 hr |
| Jan 5, 3:12 PM EST | Wind Chill Advisory | MRX | 45 hr |
| Jan 5, 8:02 PM EST | Wind Advisory | MRX | 8 hr |
| Jan 14, 4:14 PM EST | Winter Weather Advisory | MRX | 23 hr |
| Jan 18, 3:20 PM EST | Winter Weather Advisory | MRX | 13 hr |
| Jan 25, 5:44 AM EST | Wind Advisory | MRX | 22 hr |
| Jan 27, 3:26 AM EST | Wind Chill Advisory | MRX | 31 hr |
| Jan 28, 2:22 AM EST | Winter Weather Advisory | MRX | 20 hr |
| Feb 7, 9:55 PM EST | Winter Weather Advisory | MRX | 13 hr |
| Feb 10, 3:44 AM EST | Winter Storm Watch | MRX | 36 hr |
| Feb 11, 3:31 PM EST | Winter Storm Warning | MRX | 48 hr |
| Feb 14, 4:36 AM EST | Winter Weather Advisory | MRX | 32 hr |
| Feb 20, 10:29 PM EST | Mesoscale Discussion | SPC | 61 min |
| Feb 20, 10:47 PM EST | Tornado Watch | SPC | 6 hr |
| Feb 21, 1:39 AM EST | Severe Thunderstorm Warning | MRX | 66 min |
| Mar 2, 4:13 PM EST | Winter Weather Advisory | MRX | 26 hr |
| Mar 11, 4:13 PM EDT | Wind Advisory | MRX | 31 hr |
| Mar 22, 3:34 PM EDT | Freeze Watch | MRX | 13 hr |
| Mar 23, 4:20 AM EDT | Freeze Warning | MRX | 29 hr |
| Mar 24, 3:10 PM EDT | Freeze Watch | MRX | 13 hr |
| Mar 25, 4:05 AM EDT | Freeze Warning | MRX | 30 hr |
| Mar 26, 3:23 AM EDT | Freeze Warning | MRX | 30 hr |
| Mar 30, 2:45 PM EDT | Frost Advisory | MRX | 19 hr |
| Apr 3, 8:03 AM EDT | Special Weather Statement | MRX | 42 min |
| Apr 3, 8:45 AM EDT | Special Weather Statement | MRX | 45 min |
| Apr 4, 5:58 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 4, 8:14 AM EDT | Special Weather Statement | MRX | 46 min |
| Apr 4, 8:41 AM EDT | Mesoscale Discussion | SPC | 49 min |
| Apr 4, 8:54 AM EDT | Special Weather Statement | MRX | 51 min |
| Apr 4, 9:14 AM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Apr 14, 4:13 AM EDT | Freeze Watch | MRX | 25 hr |
| Apr 15, 4:46 AM EDT | Freeze Warning | MRX | 29 hr |
| Apr 16, 3:36 AM EDT | Frost Advisory | MRX | 29 hr |
| Apr 25, 11:23 AM EDT | Special Weather Statement | MRX | 37 min |
| Apr 27, 3:25 PM EDT | Flood Watch | MRX | 66 hr |
| Apr 28, 1:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Apr 28, 2:33 PM EDT | Tornado Watch | SPC | 5 hr |
| Apr 28, 2:38 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Apr 28, 3:21 PM EDT | Severe Thunderstorm Warning | MRX | 54 min |
| Apr 28, 4:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 28, 6:37 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 28, 10:10 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 29, 12:30 AM EDT | Tornado Watch | SPC | 7 hr |
| May 11, 4:47 AM EDT | Dense Fog Advisory | MRX | 4 hr |
| May 13, 5:13 PM EDT | Severe Thunderstorm Warning | MRX | 47 min |
| May 14, 3:41 PM EDT | Flash Flood Watch | MRX | 12 hr |
| May 21, 10:38 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| May 21, 11:20 PM EDT | Special Weather Statement | MRX | 40 min |
| May 22, 3:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 3:33 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 29, 3:15 PM EDT | Severe Thunderstorm Warning | MRX | 60 min |
| Jun 4, 8:00 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 10, 3:24 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 10, 4:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 10, 5:12 PM EDT | Severe Thunderstorm Warning | MRX | 48 min |
| Jun 10, 5:57 PM EDT | Severe Thunderstorm Warning | MRX | 63 min |
| Jun 10, 6:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 23, 4:54 PM EDT | Special Weather Statement | MRX | 36 min |
| Jul 8, 4:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 8, 10:14 PM EDT | Special Weather Statement | MRX | 46 min |
| Jul 14, 1:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 4:06 PM EDT | Special Weather Statement | MRX | 39 min |
| Jul 27, 1:00 PM EDT | Tornado Watch | SPC | 11 hr |
| Jul 27, 3:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 3:57 PM EDT | Tornado Warning | MRX | 33 min |
| Jul 27, 5:56 PM EDT | Tornado Warning | MRX | 49 min |
| Jul 27, 6:36 PM EDT | Areal Flood Advisory | MRX | 114 min |
| Jul 27, 7:07 PM EDT | Tornado Warning | MRX | 53 min |
| Jul 27, 7:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 27, 7:40 PM EDT | Areal Flood Advisory | MRX | 110 min |
| Jul 27, 8:00 PM EDT | Tornado Watch | SPC | 5 hr |
| Jul 27, 10:06 PM EDT | Severe Thunderstorm Warning | MRX | 54 min |
| Jul 27, 10:55 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 27, 10:55 PM EDT | Severe Thunderstorm Warning | MRX | 50 min |
| Jul 27, 11:14 PM EDT | Severe Thunderstorm Warning | MRX | 61 min |
| Jul 27, 11:39 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 11, 2:52 PM EDT | Areal Flood Advisory | MRX | 113 min |
| Aug 20, 3:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Aug 20, 3:59 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 20, 5:25 PM EDT | Severe Thunderstorm Warning | MRX | 50 min |
| Aug 20, 6:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 20, 7:04 PM EDT | Severe Thunderstorm Warning | MRX | 41 min |
| Aug 20, 7:19 PM EDT | Severe Thunderstorm Warning | MRX | 56 min |
| Aug 20, 7:41 PM EDT | Severe Thunderstorm Warning | MRX | 49 min |
| Aug 31, 2:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 31, 4:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 31, 6:19 PM EDT | Special Weather Statement | MRX | 41 min |
| Sep 2, 4:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Sep 2, 7:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Sep 2, 7:09 PM EDT | Special Weather Statement | MRX | 51 min |
| Sep 8, 10:02 PM EDT | Areal Flood Advisory | MRX | 118 min |
| Sep 11, 3:34 PM EDT | Special Weather Statement | MRX | 41 min |
| Sep 21, 3:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Oct 4, 3:01 PM EDT | Frost Advisory | MRX | 19 hr |
| Oct 6, 11:40 AM EDT | Special Weather Statement | MRX | 35 min |
| Oct 8, 1:37 AM EDT | Special Weather Statement | MRX | 53 min |
| Oct 13, 3:51 PM EDT | Flood Watch | MRX | 24 hr |
| Oct 13, 11:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 14, 8:12 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Oct 14, 1:29 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Oct 14, 4:23 PM EDT | Areal Flood Advisory | MRX | 112 min |
| Oct 30, 9:20 PM EDT | Winter Weather Advisory | MRX | 40 hr |
| Oct 31, 3:24 AM EDT | Freeze Watch | MRX | 22 hr |
| Nov 1, 1:36 AM EDT | Freeze Warning | MRX | 32 hr |
| Nov 24, 4:10 AM EST | Wind Advisory | MRX | 12 hr |
| Dec 18, 4:38 AM EST | Winter Weather Advisory | MRX | 4 hr |
| Dec 22, 8:53 PM EST | Special Weather Statement | MRX | 37 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 | 16 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 15 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 9 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 10 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 4 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20132015
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.