Alert archive / Tennessee / Roane County
Weather alerts in Roane County, Tennessee, 2010
115 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Roane County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 115
- Warnings
- 28
- Watches
- 12
- Advisories
- 55
- Busiest month
- May23 alerts
- Busiest day
- June 15, 20107 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 Roane County in 2010 had a tornado report inside them.
Roane County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 17 | 13 | 24% | 10 | 70% | 15 min |
| Flash flood warnings | 2 | 0 | 100% | 1 | 0% |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 30 | 6 | 80% | 9 | 89% | 20 min |
| NWS Morristown, TN: severe thunderstorm warnings | 212 | 158 | 25% | 289 | 79% | 22 min |
| NWS Morristown, TN: flash flood warnings | 23 | 12 | 48% | 23 | 78% | 67 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 6, 3:06 PM EST | Winter Weather Advisory | MRX | 60 hr |
| Jan 20, 5:34 PM EST | Areal Flood Advisory | MRX | 4 hr |
| Jan 21, 11:18 PM EST | Areal Flood Advisory | MRX | 4 hr |
| Jan 23, 3:42 PM EST | Wind Advisory | MRX | 24 hr |
| Jan 24, 1:10 PM EST | Flood Watch | MRX | 8 hr |
| Jan 24, 1:19 PM EST | Areal Flood Advisory | MRX | 5 hr |
| Jan 24, 5:15 PM EST | Areal Flood Warning | MRX | 3 hr |
| Jan 24, 8:04 PM EST | Areal Flood Warning | MRX | 6 hr |
| Jan 25, 2:00 AM EST | Areal Flood Warning | MRX | 3 hr |
| Jan 25, 5:07 AM EST | Wind Advisory | MRX | 17 hr |
| Jan 27, 2:59 PM EST | Winter Storm Watch | MRX | 24 hr |
| Jan 28, 2:56 PM EST | Winter Storm Warning | MRX | 48 hr |
| Jan 29, 9:06 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 30, 9:28 AM EST | Winter Weather Advisory | MRX | 17 hr |
| Feb 9, 4:25 AM EST | Wind Advisory | MRX | 47 hr |
| Feb 14, 3:44 AM EST | Winter Weather Advisory | MRX | 4 days |
| Feb 14, 10:42 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 1, 3:20 PM EST | Winter Weather Advisory | MRX | 28 hr |
| Mar 12, 4:05 AM EST | Wind Advisory | MRX | 6 hr |
| Mar 12, 11:32 AM EST | Mesoscale Discussion | SPC | 58 min |
| Mar 12, 12:04 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 12, 12:15 PM EST | Areal Flood Advisory | MRX | 4 hr |
| Mar 12, 2:32 PM EST | Areal Flood Warning | MRX | 4 hr |
| Mar 27, 2:40 AM EDT | Wind Advisory | MRX | 36 hr |
| Apr 9, 3:02 PM EDT | Frost Advisory | MRX | 18 hr |
| Apr 24, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Apr 24, 7:15 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 25, 12:05 AM EDT | Mesoscale Discussion | SPC | 55 min |
| May 1, 6:35 PM EDT | Tornado Watch | SPC | 4 hr |
| May 1, 7:54 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 1, 8:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 2, 3:31 AM EDT | Flash Flood Watch | MRX | 27 hr |
| May 2, 9:19 AM EDT | River Flood Warning | MRX | 28 hr |
| May 3, 12:37 AM EDT | Areal Flood Advisory | MRX | 6 hr |
| May 3, 1:11 AM EDT | Areal Flood Warning | MRX | 6 hr |
| May 14, 12:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 14, 4:25 PM EDT | Areal Flood Advisory | MRX | 4 hr |
| May 14, 4:41 PM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| May 14, 5:46 PM EDT | Severe Thunderstorm Warning | MRX | 44 min |
| May 14, 6:30 PM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| May 14, 6:41 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 14, 8:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 15, 2:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 12:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 17, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 28, 1:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 28, 1:52 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 28, 2:56 PM EDT | Severe Thunderstorm Warning | MRX | 64 min |
| May 28, 3:43 PM EDT | Severe Thunderstorm Warning | MRX | 62 min |
| May 28, 4:18 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 28, 4:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 2, 5:17 AM EDT | Dense Fog Advisory | MRX | 4 hr |
| Jun 11, 1:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 11, 2:58 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 11, 3:07 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 14, 4:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 14, 4:28 PM EDT | Severe Thunderstorm Warning | MRX | 62 min |
| Jun 14, 5:14 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 15, 12:26 PM EDT | Severe Thunderstorm Warning | MRX | 64 min |
| Jun 15, 1:07 PM EDT | Severe Thunderstorm Warning | MRX | 53 min |
| Jun 15, 1:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 1:13 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 15, 2:03 PM EDT | Areal Flood Advisory | MRX | 66 min |
| Jun 15, 2:33 PM EDT | Severe Thunderstorm Warning | MRX | 57 min |
| Jun 15, 6:16 PM EDT | Severe Thunderstorm Warning | MRX | 59 min |
| Jun 19, 11:14 AM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Jun 19, 11:59 AM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Jun 24, 5:45 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 9, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 19, 7:06 PM EDT | Flash Flood Warning | MRX | 3 hr |
| Jul 21, 4:17 PM EDT | Areal Flood Advisory | MRX | 118 min |
| Jul 22, 12:16 PM EDT | Areal Flood Advisory | MRX | 119 min |
| Jul 26, 1:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 26, 1:56 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 28, 5:32 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 28, 7:56 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 28, 9:21 PM EDT | Severe Thunderstorm Warning | MRX | 54 min |
| Jul 28, 9:53 PM EDT | Severe Thunderstorm Warning | MRX | 67 min |
| Jul 29, 1:40 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 2, 3:19 PM EDT | Heat Advisory | MRX | 3 days |
| Aug 5, 1:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Aug 5, 1:26 PM EDT | Severe Thunderstorm Warning | MRX | 64 min |
| Aug 5, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 5, 5:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 13, 2:34 AM EDT | Heat Advisory | MRX | 16 hr |
| Aug 18, 3:08 AM EDT | Flash Flood Watch | MRX | 31 hr |
| Aug 18, 11:57 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 18, 2:33 PM EDT | Flash Flood Warning | MRX | 6 hr |
| Aug 19, 11:09 PM EDT | Dense Fog Advisory | MRX | 10 hr |
| Aug 21, 1:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Sep 11, 10:14 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Sep 11, 5:59 PM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| Sep 11, 6:43 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Oct 5, 10:39 AM EDT | Frost Advisory | MRX | 22 hr |
| Oct 6, 2:51 PM EDT | Frost Advisory | MRX | 18 hr |
| Oct 15, 3:01 PM EDT | Frost Advisory | MRX | 17 hr |
| Oct 16, 2:50 PM EDT | Frost Advisory | MRX | 19 hr |
| Oct 21, 2:41 PM EDT | Frost Advisory | MRX | 17 hr |
| Oct 25, 6:18 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Oct 26, 2:33 AM EDT | Wind Advisory | MRX | 19 hr |
| Oct 26, 12:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Oct 26, 2:12 PM EDT | Tornado Warning | MRX | 33 min |
| Oct 26, 2:16 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 26, 2:24 PM EDT | Tornado Warning | MRX | 22 min |
| Oct 26, 6:09 PM EDT | Severe Thunderstorm Warning | MRX | 66 min |
| Oct 27, 11:05 PM EDT | Dense Fog Advisory | MRX | 8 hr |
| Nov 23, 10:05 PM EST | Dense Fog Advisory | MRX | 11 hr |
| Nov 28, 9:30 PM EST | Wind Advisory | MRX | 37 hr |
| Nov 30, 5:44 AM EST | Areal Flood Advisory | MRX | 4 hr |
| Nov 30, 9:37 AM EST | Areal Flood Advisory | MRX | 4 hr |
| Dec 1, 7:41 AM EST | Areal Flood Advisory | MRX | 6 hr |
| Dec 11, 3:31 PM EST | Winter Weather Advisory | MRX | 51 hr |
| Dec 15, 3:51 AM EST | Winter Weather Advisory | MRX | 32 hr |
| Dec 24, 3:22 PM EST | Winter Weather Advisory | MRX | 25 hr |
| Dec 25, 4:07 PM EST | Winter Weather Advisory | MRX | 31 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 | 17 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 20 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 2 |
| River Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 28 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Frost Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 7 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.