Alert archive / Tennessee / Lewis County
Weather alerts in Lewis County, Tennessee, 2008
108 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lewis County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 108
- Warnings
- 23
- Watches
- 15
- Advisories
- 35
- Busiest month
- January23 alerts
- Busiest day
- January 10, 200811 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 4 tornado warnings covering Lewis County in 2008 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 23 minutes after it went out.
Lewis County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 2 | 50% | 2 | 100% | 23 min |
| Severe thunderstorm warnings | 6 | 3 | 50% | 4 | 75% | 12 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Nashville, TN: tornado warnings | 59 | 18 | 69% | 39 | 92% | 17 min |
| NWS Nashville, TN: severe thunderstorm warnings | 183 | 52 | 72% | 152 | 49% | 11 min |
| NWS Nashville, TN: flash flood warnings | 5 | 1 | 80% | 2 | 50% | 18 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, 5:41 AM CST | Wind Advisory | OHX | 15 hr |
| Jan 8, 4:00 AM CST | Lake Wind Advisory | OHX | 20 hr |
| Jan 8, 1:26 PM CST | Tornado Watch | SPC | 8 hr |
| Jan 8, 4:03 PM CST | Mesoscale Discussion | SPC | 117 min |
| Jan 8, 6:15 PM CST | Severe Thunderstorm Warning | OHX | 30 min |
| Jan 10, 9:23 AM CST | Mesoscale Discussion | SPC | 67 min |
| Jan 10, 11:33 AM CST | Tornado Watch | SPC | 9 hr |
| Jan 10, 1:35 PM CST | Severe Thunderstorm Warning | OHX | 25 min |
| Jan 10, 1:42 PM CST | Mesoscale Discussion | SPC | 93 min |
| Jan 10, 1:57 PM CST | Severe Thunderstorm Warning | OHX | 33 min |
| Jan 10, 2:36 PM CST | Tornado Warning | OHX | 24 min |
| Jan 10, 2:41 PM CST | Areal Flood Advisory | OHX | 181 days |
| Jan 10, 3:05 PM CST | Mesoscale Discussion | SPC | 115 min |
| Jan 10, 3:12 PM CST | Flash Flood Warning | OHX | 3 hr |
| Jan 10, 3:42 PM CST | Mesoscale Discussion | SPC | 93 min |
| Jan 10, 5:25 PM CST | Mesoscale Discussion | SPC | 95 min |
| Jan 16, 3:19 PM CST | Winter Weather Advisory | OHX | 12 hr |
| Jan 21, 3:28 PM CST | Winter Weather Advisory | OHX | 11 hr |
| Jan 25, 3:10 PM CST | Winter Weather Advisory | OHX | 19 hr |
| Jan 29, 3:53 AM CST | Wind Advisory | OHX | 15 hr |
| Jan 29, 5:53 PM CST | High Wind Warning | OHX | 4 hr |
| Jan 29, 9:16 PM CST | Wind Advisory | OHX | 6 hr |
| Jan 31, 6:34 AM CST | Winter Weather Advisory | OHX | 5 hr |
| Jan 31, 10:11 PM CST | Wind Advisory | OHX | 4 hr |
| Feb 5, 6:59 PM CST | Mesoscale Discussion | SPC | 91 min |
| Feb 5, 7:19 PM CST | Tornado Watch | SPC | 6 hr |
| Feb 5, 8:10 PM CST | Tornado Warning | OHX | 35 min |
| Feb 5, 8:35 PM CST | Tornado Warning | OHX | 25 min |
| Feb 5, 9:39 PM CST | Mesoscale Discussion | SPC | 96 min |
| Feb 6, 1:03 AM CST | Tornado Warning | OHX | 27 min |
| Feb 6, 11:59 AM CST | Lake Wind Advisory | OHX | 6 hr |
| Feb 12, 3:09 PM CST | Winter Weather Advisory | OHX | 16 hr |
| Feb 12, 7:09 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 16, 4:13 PM CST | Lake Wind Advisory | OHX | 9 hr |
| Feb 17, 12:53 AM CST | Wind Advisory | OHX | 23 hr |
| Feb 26, 4:13 AM CST | Lake Wind Advisory | OHX | 14 hr |
| Mar 3, 4:17 AM CST | Lake Wind Advisory | OHX | 23 hr |
| Mar 3, 9:43 PM CST | Areal Flood Warning | OHX | 6 hr |
| Mar 5, 3:54 PM CST | Winter Storm Watch | OHX | 44 hr |
| Mar 7, 3:00 AM CST | Winter Storm Warning | OHX | 33 hr |
| Mar 15, 12:39 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Mar 18, 8:56 AM CDT | Wind Advisory | OHX | 27 hr |
| Mar 19, 7:08 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 25, 7:18 AM CDT | Red Flag Warning | OHX | 14 hr |
| Mar 25, 2:09 PM CDT | Red Flag Warning | OHX | 7 hr |
| Apr 1, 12:10 AM CDT | Severe Thunderstorm Warning | OHX | 35 min |
| Apr 2, 3:34 PM CDT | Flood Watch | OHX | 46 hr |
| Apr 4, 1:28 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 4, 2:46 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 4, 4:59 AM CDT | Areal Flood Warning | OHX | 4 hr |
| Apr 4, 5:16 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 4, 8:54 AM CDT | Areal Flood Warning | OHX | 24 hr |
| Apr 5, 2:51 PM CDT | Dense Fog Advisory | OHX | 18 hr |
| Apr 9, 3:31 PM CDT | Wind Advisory | OHX | 32 hr |
| Apr 11, 2:15 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 11, 10:15 AM CDT | Tornado Watch | SPC | 5 hr |
| Apr 11, 12:12 PM CDT | Areal Flood Advisory | OHX | 109 days |
| Apr 13, 3:00 PM CDT | Freeze Watch | OHX | 24 hr |
| Apr 14, 2:45 PM CDT | Freeze Warning | OHX | 17 hr |
| Apr 18, 5:08 PM CDT | Mesoscale Discussion | SPC | 37 min |
| Apr 29, 3:22 PM CDT | Frost Advisory | OHX | 16 hr |
| May 1, 7:40 AM CDT | Red Flag Warning | OHX | 11 hr |
| May 2, 3:35 PM CDT | Mesoscale Discussion | SPC | 85 min |
| May 2, 4:43 PM CDT | Tornado Watch | SPC | 7 hr |
| May 2, 7:09 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 9, 3:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 6:18 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 10, 4:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| May 10, 7:08 PM CDT | Tornado Watch | SPC | 7 hr |
| May 10, 9:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| May 11, 3:52 AM CDT | Wind Advisory | OHX | 18 hr |
| May 26, 12:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 31, 5:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jun 1, 1:20 AM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 1, 1:36 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 2:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 12, 1:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 13, 8:11 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 15, 3:34 AM CDT | Dense Fog Advisory | OHX | 4 hr |
| Jun 16, 9:11 PM CDT | Severe Thunderstorm Warning | OHX | 34 min |
| Jun 23, 2:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 4, 12:29 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 11:55 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 28, 1:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 2, 12:26 PM CDT | Heat Advisory | OHX | 6 hr |
| Sep 4, 12:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 7, 1:03 AM CDT | Dense Fog Advisory | OHX | 6 hr |
| Sep 13, 3:50 PM CDT | Wind Advisory | OHX | 24 hr |
| Sep 14, 9:21 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Oct 19, 3:08 PM CDT | Frost Advisory | OHX | 17 hr |
| Oct 25, 3:23 PM CDT | Freeze Watch | OHX | 46 hr |
| Oct 26, 3:01 PM CDT | Freeze Watch | OHX | 22 hr |
| Oct 27, 12:24 PM CDT | Freeze Warning | OHX | 21 hr |
| Oct 27, 12:24 PM CDT | Freeze Warning | OHX | 45 hr |
| Oct 28, 3:30 PM CDT | Freeze Warning | OHX | 42 hr |
| Dec 9, 9:20 PM CST | Flood Watch | OHX | 9 hr |
| Dec 10, 3:38 PM CST | Flood Watch | OHX | 21 hr |
| Dec 11, 3:55 PM CST | Winter Weather Advisory | OHX | 11 hr |
| Dec 14, 4:58 AM CST | Wind Advisory | OHX | 13 hr |
| Dec 15, 4:00 AM CST | Freezing Rain Advisory | OHX | 32 hr |
| Dec 15, 6:13 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 18, 12:12 AM CST | Dense Fog Advisory | OHX | 8 hr |
| Dec 18, 5:33 PM CST | Dense Fog Advisory | OHX | 10 hr |
| Dec 23, 6:02 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 23, 9:31 AM CST | Freezing Rain Advisory | OHX | 89 min |
| Dec 24, 3:35 AM CST | Wind Advisory | OHX | 12 hr |
| Dec 27, 3:13 AM CST | Wind Advisory | OHX | 21 hr |
| Dec 27, 10:27 PM CST | Severe Thunderstorm Warning | OHX | 33 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 | 6 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 35 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 1 |
| Flood Watch | 3 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 3 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| Lake Wind Advisory | 5 |
| Wind Advisory | 12 |
| Fire | |
| Red Flag Warning | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.