Alert archive / Tennessee / Blount County
Weather alerts in Blount County, Tennessee, 2018
182 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Blount County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 182
- Warnings
- 54
- Watches
- 22
- Advisories
- 69
- Busiest month
- June25 alerts
- Busiest day
- July 21, 20188 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Blount County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 27 | 20 | 26% | 6 | 83% | 20 min |
| Flash flood warnings | 4 | 2 | 50% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 8 | 0 | 100% | 0 | ||
| NWS Morristown, TN: severe thunderstorm warnings | 210 | 162 | 23% | 267 | 84% | 22 min |
| NWS Morristown, TN: flash flood warnings | 37 | 27 | 27% | 35 | 83% | 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 4:14 AM EST | Wind Chill Advisory | MRX | 30 hr |
| Jan 3, 4:27 AM EST | Wind Chill Advisory | MRX | 32 hr |
| Jan 4, 3:36 AM EST | Wind Chill Advisory | MRX | 31 hr |
| Jan 5, 4:16 AM EST | Wind Chill Advisory | MRX | 30 hr |
| Jan 7, 4:06 AM EST | Winter Weather Advisory | MRX | 37 hr |
| Jan 10, 3:07 PM EST | Wind Advisory | MRX | 31 hr |
| Jan 15, 10:08 AM EST | Winter Weather Advisory | MRX | 45 hr |
| Jan 17, 1:29 PM EST | Wind Chill Advisory | MRX | 20 hr |
| Jan 22, 4:04 AM EST | Wind Advisory | MRX | 26 hr |
| Jan 28, 9:32 PM EST | Winter Weather Advisory | MRX | 38 hr |
| Feb 1, 3:12 AM EST | Winter Weather Advisory | MRX | 30 hr |
| Feb 3, 3:38 AM EST | Winter Weather Advisory | MRX | 30 hr |
| Feb 3, 3:15 PM EST | Wind Advisory | MRX | 21 hr |
| Feb 4, 6:02 PM EST | Winter Weather Advisory | MRX | 12 hr |
| Feb 6, 2:54 AM EST | Wind Advisory | MRX | 16 hr |
| Feb 6, 6:34 PM EST | High Wind Warning | MRX | 15 hr |
| Feb 9, 3:46 AM EST | Flood Watch | MRX | 63 hr |
| Feb 10, 9:41 PM EST | Areal Flood Advisory | MRX | 4 hr |
| Feb 11, 1:47 AM EST | Areal Flood Advisory | MRX | 3 hr |
| Feb 11, 3:38 AM EST | Wind Advisory | MRX | 11 hr |
| Feb 11, 4:38 AM EST | Areal Flood Advisory | MRX | 5 hr |
| Feb 11, 9:18 AM EST | Areal Flood Advisory | MRX | 3 hr |
| Feb 27, 4:03 AM EST | Flood Watch | MRX | 63 hr |
| Mar 1, 3:24 AM EST | Wind Advisory | MRX | 31 hr |
| Mar 1, 10:09 AM EST | Areal Flood Advisory | MRX | 3 hr |
| Mar 1, 1:11 PM EST | Areal Flood Warning | MRX | 3 hr |
| Mar 1, 4:43 PM EST | Areal Flood Warning | MRX | 3 hr |
| Mar 11, 4:28 AM EDT | Winter Weather Advisory | MRX | 49 hr |
| Mar 13, 3:23 AM EDT | Winter Weather Advisory | MRX | 32 hr |
| Mar 15, 3:33 AM EDT | Wind Advisory | MRX | 16 hr |
| Mar 17, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 17, 6:59 PM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Mar 17, 7:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Mar 17, 7:42 PM EDT | Severe Thunderstorm Warning | MRX | 34 min |
| Mar 17, 10:23 PM EDT | Severe Thunderstorm Warning | MRX | 35 min |
| Mar 19, 3:13 PM EDT | Wind Advisory | MRX | 12 hr |
| Mar 20, 4:20 AM EDT | Winter Storm Warning | MRX | 44 hr |
| Mar 21, 3:40 AM EDT | Freeze Warning | MRX | 30 hr |
| Mar 22, 3:36 AM EDT | Freeze Warning | MRX | 30 hr |
| Mar 24, 4:47 PM EDT | Special Weather Statement | MRX | 58 min |
| Mar 24, 5:33 PM EDT | Special Weather Statement | MRX | 42 min |
| Apr 3, 9:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 3, 9:50 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 3, 11:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 4, 1:44 AM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Apr 4, 2:00 AM EDT | Mesoscale Discussion | SPC | 105 min |
| Apr 4, 4:32 AM EDT | Freeze Warning | MRX | 28 hr |
| Apr 6, 3:26 PM EDT | Freeze Watch | MRX | 12 hr |
| Apr 7, 3:28 AM EDT | Freeze Warning | MRX | 31 hr |
| Apr 10, 3:25 PM EDT | Frost Advisory | MRX | 18 hr |
| Apr 14, 3:19 PM EDT | Wind Advisory | MRX | 24 hr |
| Apr 15, 4:12 AM EDT | Freeze Watch | MRX | 11 hr |
| Apr 15, 3:39 PM EDT | Freeze Warning | MRX | 43 hr |
| Apr 16, 4:28 AM EDT | Freeze Watch | MRX | 11 hr |
| Apr 16, 4:28 AM EDT | Freeze Warning | MRX | 29 hr |
| Apr 16, 4:28 AM EDT | Wind Advisory | MRX | 11 hr |
| Apr 18, 2:49 PM EDT | Freeze Watch | MRX | 13 hr |
| Apr 19, 3:05 AM EDT | Frost Advisory | MRX | 30 hr |
| Apr 19, 3:59 AM EDT | Freeze Warning | MRX | 29 hr |
| Apr 20, 3:18 PM EDT | Frost Advisory | MRX | 18 hr |
| Apr 21, 3:20 PM EDT | High Wind Watch | MRX | 13 hr |
| Apr 22, 4:12 AM EDT | High Wind Warning | MRX | 46 hr |
| Apr 22, 9:40 AM EDT | Wind Advisory | MRX | 40 hr |
| Apr 29, 3:26 AM EDT | Frost Advisory | MRX | 30 hr |
| May 15, 6:08 PM EDT | Special Weather Statement | MRX | 37 min |
| May 18, 2:09 PM EDT | Special Weather Statement | MRX | 51 min |
| May 18, 5:11 PM EDT | Special Weather Statement | MRX | 49 min |
| May 18, 5:34 PM EDT | Severe Thunderstorm Warning | MRX | 41 min |
| May 26, 3:27 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| May 26, 9:14 PM EDT | Special Weather Statement | MRX | 46 min |
| May 27, 4:25 AM EDT | Flash Flood Watch | MRX | 40 hr |
| May 27, 7:27 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 27, 8:21 PM EDT | Flash Flood Warning | MRX | 80 min |
| May 28, 4:20 AM EDT | Flash Flood Watch | MRX | 64 hr |
| Jun 3, 3:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 3, 4:21 PM EDT | Special Weather Statement | MRX | 54 min |
| Jun 17, 2:40 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 24, 4:47 PM EDT | Special Weather Statement | MRX | 58 min |
| Jun 24, 5:19 PM EDT | Severe Thunderstorm Warning | MRX | 56 min |
| Jun 24, 5:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 25, 12:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 25, 1:01 PM EDT | Severe Thunderstorm Warning | MRX | 44 min |
| Jun 25, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 25, 1:05 PM EDT | Severe Thunderstorm Warning | MRX | 55 min |
| Jun 25, 1:34 PM EDT | Special Weather Statement | MRX | 41 min |
| Jun 25, 1:45 PM EDT | Severe Thunderstorm Warning | MRX | 60 min |
| Jun 25, 3:01 PM EDT | Severe Thunderstorm Warning | MRX | 44 min |
| Jun 26, 4:57 PM EDT | Severe Thunderstorm Warning | MRX | 48 min |
| Jun 26, 5:27 PM EDT | Severe Thunderstorm Warning | MRX | 78 min |
| Jun 26, 5:34 PM EDT | Severe Thunderstorm Warning | MRX | 56 min |
| Jun 26, 5:50 PM EDT | Areal Flood Advisory | MRX | 115 min |
| Jun 26, 6:25 PM EDT | Severe Thunderstorm Warning | MRX | 65 min |
| Jun 27, 2:29 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 28, 3:51 AM EDT | Special Weather Statement | MRX | 39 min |
| Jun 28, 5:39 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 28, 5:43 AM EDT | Special Weather Statement | MRX | 47 min |
| Jun 28, 6:15 AM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| Jun 28, 7:05 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 28, 9:33 AM EDT | Flash Flood Warning | MRX | 117 min |
| Jul 1, 4:40 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Jul 5, 4:02 PM EDT | Special Weather Statement | MRX | 43 min |
| Jul 5, 4:25 PM EDT | Severe Thunderstorm Warning | MRX | 37 min |
| Jul 5, 5:37 PM EDT | Special Weather Statement | MRX | 23 min |
| Jul 6, 4:30 PM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| Jul 6, 8:16 PM EDT | Areal Flood Advisory | MRX | 119 min |
| Jul 17, 3:57 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jul 17, 3:59 PM EDT | Special Weather Statement | MRX | 46 min |
| Jul 19, 6:24 PM EDT | Special Weather Statement | MRX | 51 min |
| Jul 20, 8:02 PM EDT | Tornado Watch | SPC | 7 hr |
| Jul 20, 10:17 PM EDT | Severe Thunderstorm Warning | MRX | 58 min |
| Jul 20, 10:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jul 21, 2:38 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 21, 2:54 AM EDT | Special Weather Statement | MRX | 66 min |
| Jul 21, 3:37 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 7:00 PM EDT | Special Weather Statement | MRX | 30 min |
| Jul 21, 7:15 PM EDT | Severe Thunderstorm Warning | MRX | 34 min |
| Jul 31, 3:35 AM EDT | Flash Flood Watch | MRX | 3 days |
| Aug 1, 3:44 PM EDT | Areal Flood Advisory | MRX | 5 hr |
| Aug 6, 8:19 PM EDT | Special Weather Statement | MRX | 41 min |
| Aug 8, 2:33 PM EDT | Severe Thunderstorm Warning | MRX | 42 min |
| Aug 8, 3:44 PM EDT | Severe Thunderstorm Warning | MRX | 61 min |
| Aug 9, 5:03 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Aug 18, 10:30 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 18, 11:21 PM EDT | Flash Flood Warning | MRX | 3 hr |
| Aug 30, 2:28 PM EDT | Special Weather Statement | MRX | 32 min |
| Aug 31, 1:44 PM EDT | Special Weather Statement | MRX | 31 min |
| Sep 1, 4:00 PM EDT | Severe Thunderstorm Warning | MRX | 30 min |
| Sep 1, 4:03 PM EDT | Severe Thunderstorm Warning | MRX | 27 min |
| Sep 1, 4:35 PM EDT | Areal Flood Advisory | MRX | 115 min |
| Sep 2, 5:57 PM EDT | Special Weather Statement | MRX | 48 min |
| Sep 3, 5:56 PM EDT | Special Weather Statement | MRX | 49 min |
| Sep 4, 5:59 PM EDT | Special Weather Statement | MRX | 31 min |
| Sep 9, 4:08 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Sep 9, 6:33 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 9, 7:17 PM EDT | Special Weather Statement | MRX | 58 min |
| Sep 15, 3:45 AM EDT | Wind Advisory | MRX | 36 hr |
| Sep 26, 4:23 AM EDT | Flash Flood Watch | MRX | 40 hr |
| Sep 26, 6:09 AM EDT | Areal Flood Advisory | MRX | 2 hr |
| Sep 26, 11:59 AM EDT | Areal Flood Advisory | MRX | 4 hr |
| Sep 26, 12:56 PM EDT | Flash Flood Warning | MRX | 6 hr |
| Sep 27, 6:40 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Oct 11, 7:22 AM EDT | Areal Flood Advisory | MRX | 5 hr |
| Oct 19, 3:16 PM EDT | Freeze Watch | MRX | 12 hr |
| Oct 20, 3:03 AM EDT | Freeze Warning | MRX | 31 hr |
| Oct 20, 2:53 PM EDT | Wind Advisory | MRX | 13 hr |
| Oct 21, 3:35 AM EDT | Frost Advisory | MRX | 29 hr |
| Oct 21, 3:35 AM EDT | Freeze Warning | MRX | 29 hr |
| Oct 25, 3:42 PM EDT | Wind Advisory | MRX | 24 hr |
| Oct 28, 3:49 AM EDT | Wind Advisory | MRX | 24 hr |
| Oct 29, 9:32 PM EDT | Frost Advisory | MRX | 11 hr |
| Nov 1, 3:40 AM EDT | Wind Advisory | MRX | 22 hr |
| Nov 5, 3:42 AM EST | Wind Advisory | MRX | 30 hr |
| Nov 6, 2:40 AM EST | Mesoscale Discussion | SPC | 65 min |
| Nov 6, 3:15 AM EST | Tornado Watch | SPC | 5 hr |
| Nov 6, 3:18 AM EST | High Wind Warning | MRX | 6 hr |
| Nov 6, 4:16 AM EST | Severe Thunderstorm Warning | MRX | 44 min |
| Nov 6, 4:52 AM EST | Severe Thunderstorm Warning | MRX | 38 min |
| Nov 8, 11:04 AM EST | Freeze Warning | MRX | 47 hr |
| Nov 10, 12:35 PM EST | Freeze Warning | MRX | 21 hr |
| Nov 22, 4:13 AM EST | High Wind Watch | MRX | 23 hr |
| Nov 23, 3:25 AM EST | High Wind Warning | MRX | 28 hr |
| Nov 25, 2:46 PM EST | Wind Advisory | MRX | 20 hr |
| Nov 27, 3:18 AM EST | Wind Chill Advisory | MRX | 29 hr |
| Nov 30, 9:45 PM EST | Wind Advisory | MRX | 14 hr |
| Dec 1, 12:00 PM EST | High Wind Warning | MRX | 7 hr |
| Dec 4, 3:32 PM EST | Winter Weather Advisory | MRX | 23 hr |
| Dec 6, 3:24 PM EST | Winter Storm Watch | MRX | 36 hr |
| Dec 7, 3:52 PM EST | Winter Storm Warning | MRX | 59 hr |
| Dec 8, 3:10 PM EST | Winter Weather Advisory | MRX | 43 hr |
| Dec 11, 4:44 AM EST | Freezing Fog Advisory | MRX | 6 hr |
| Dec 13, 3:35 PM EST | Wind Advisory | MRX | 24 hr |
| Dec 17, 4:45 AM EST | Dense Fog Advisory | MRX | 5 hr |
| Dec 20, 3:19 PM EST | Winter Weather Advisory | MRX | 40 hr |
| Dec 26, 4:02 AM EST | High Wind Watch | MRX | 12 hr |
| Dec 26, 3:42 PM EST | Flash Flood Watch | MRX | 48 hr |
| Dec 26, 3:42 PM EST | High Wind Warning | MRX | 45 hr |
| Dec 28, 2:27 AM EST | Areal Flood Warning | MRX | 6 hr |
| Dec 28, 8:50 AM EST | Areal Flood Advisory | MRX | 4 hr |
| Dec 28, 8:55 AM EST | Areal Flood Advisory | MRX | 5 hr |
| Dec 28, 9:57 PM EST | Dense Fog Advisory | MRX | 10 hr |
| Dec 30, 3:35 AM EST | High Wind Watch | MRX | 19 hr |
| Dec 30, 10:06 PM EST | High Wind Warning | MRX | 25 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 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.