Alert archive / Tennessee / Hancock County
Weather alerts in Hancock County, Tennessee, 2009
122 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hancock County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 122
- Warnings
- 33
- Watches
- 22
- Advisories
- 37
- Busiest month
- June26 alerts
- Busiest day
- June 17, 20099 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 Hancock County in 2009 had a tornado report inside them.
Hancock County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 15 | 11 | 27% | 5 | 80% | 32 min |
| Flash flood warnings | 3 | 3 | 0% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 41 | 11 | 73% | 14 | 93% | 22 min |
| NWS Morristown, TN: severe thunderstorm warnings | 335 | 252 | 25% | 434 | 87% | 26 min |
| NWS Morristown, TN: flash flood warnings | 39 | 29 | 26% | 59 | 76% | 75 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 2, 7:11 AM EST | Winter Weather Advisory | MRX | 5 hr |
| Jan 3, 12:43 AM EST | Dense Fog Advisory | MRX | 9 hr |
| Jan 5, 3:51 AM EST | Flood Watch | MRX | 51 hr |
| Jan 6, 5:55 PM EST | Areal Flood Warning | MRX | 16 hr |
| Jan 7, 7:49 AM EST | River Flood Warning | MRX | 18 hr |
| Jan 7, 7:49 AM EST | River Flood Warning | MRX | 34 hr |
| Jan 7, 3:05 PM EST | Winter Weather Advisory | MRX | 21 hr |
| Jan 10, 6:17 PM EST | Areal Flood Advisory | MRX | 3 hr |
| Jan 15, 3:18 AM EST | Wind Chill Advisory | MRX | 33 hr |
| Jan 17, 10:37 PM EST | Freezing Rain Advisory | MRX | 11 hr |
| Jan 18, 4:12 AM EST | Winter Weather Advisory | MRX | 63 hr |
| Feb 2, 10:38 AM EST | Winter Weather Advisory | MRX | 5 hr |
| Feb 3, 4:28 AM EST | Winter Weather Advisory | MRX | 47 hr |
| Feb 3, 2:57 PM EST | Wind Chill Advisory | MRX | 22 hr |
| Feb 10, 2:56 PM EST | Wind Advisory | MRX | 45 hr |
| Feb 11, 11:02 AM EST | Mesoscale Discussion | SPC | 88 min |
| Feb 11, 1:35 PM EST | Mesoscale Discussion | SPC | 85 min |
| Feb 11, 1:59 PM EST | Tornado Watch | SPC | 7 hr |
| Feb 11, 4:31 PM EST | Severe Thunderstorm Warning | MRX | 59 min |
| Feb 11, 4:34 PM EST | Mesoscale Discussion | SPC | 86 min |
| Feb 18, 2:33 PM EST | Mesoscale Discussion | SPC | 87 min |
| Feb 18, 3:18 PM EST | Severe Thunderstorm Warning | MRX | 57 min |
| Feb 21, 1:04 PM EST | Winter Weather Advisory | MRX | 21 hr |
| Apr 2, 5:02 AM EDT | Wind Advisory | MRX | 35 hr |
| Apr 2, 11:35 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 5, 8:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 5, 8:53 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 6, 12:08 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Apr 6, 3:27 PM EDT | Freeze Watch | MRX | 12 hr |
| Apr 6, 3:27 PM EDT | Freeze Warning | MRX | 12 hr |
| Apr 7, 3:54 AM EDT | Freeze Warning | MRX | 30 hr |
| Apr 10, 2:51 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 10, 4:27 PM EDT | Severe Thunderstorm Warning | MRX | 48 min |
| Apr 10, 4:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 10, 5:18 PM EDT | Tornado Warning | MRX | 42 min |
| Apr 10, 7:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Apr 12, 8:40 PM EDT | Wind Advisory | MRX | 18 hr |
| Apr 21, 2:17 PM EDT | Wind Advisory | MRX | 6 hr |
| May 2, 2:54 PM EDT | Flood Watch | MRX | 44 hr |
| May 5, 3:29 PM EDT | Flood Watch | MRX | 31 hr |
| May 7, 5:51 PM EDT | Areal Flood Advisory | MRX | 54 min |
| May 7, 6:54 PM EDT | Areal Flood Advisory | MRX | 51 min |
| May 8, 4:42 PM EDT | Tornado Watch | SPC | 7 hr |
| May 8, 6:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 8, 7:26 PM EDT | Tornado Warning | MRX | 64 min |
| May 8, 8:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 15, 1:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 15, 6:35 PM EDT | Severe Thunderstorm Warning | MRX | 40 min |
| May 18, 9:22 PM EDT | Frost Advisory | MRX | 12 hr |
| May 28, 1:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| May 28, 2:21 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 28, 4:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| May 28, 7:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 3, 4:30 PM EDT | Severe Thunderstorm Warning | MRX | 45 min |
| Jun 4, 7:13 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 8, 3:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 10, 6:15 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jun 11, 12:18 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 11, 2:45 PM EDT | Severe Thunderstorm Warning | MRX | 30 min |
| Jun 11, 2:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 11, 3:04 PM EDT | Severe Thunderstorm Warning | MRX | 26 min |
| Jun 11, 8:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 16, 2:10 PM EDT | Mesoscale Discussion | SPC | 35 min |
| Jun 16, 4:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 16, 5:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 5:59 PM EDT | Severe Thunderstorm Warning | MRX | 61 min |
| Jun 16, 6:31 PM EDT | Severe Thunderstorm Warning | MRX | 59 min |
| Jun 17, 4:37 AM EDT | Severe Thunderstorm Warning | MRX | 53 min |
| Jun 17, 5:01 AM EDT | Tornado Warning | MRX | 44 min |
| Jun 17, 5:21 AM EDT | Severe Thunderstorm Warning | MRX | 54 min |
| Jun 17, 6:38 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jun 17, 10:01 AM EDT | Flash Flood Watch | MRX | 13 hr |
| Jun 17, 12:54 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 17, 3:17 PM EDT | Mesoscale Discussion | SPC | 28 min |
| Jun 17, 4:07 PM EDT | Mesoscale Discussion | SPC | 23 min |
| Jun 17, 4:34 PM EDT | Severe Thunderstorm Warning | MRX | 56 min |
| Jun 18, 10:39 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 2:07 PM EDT | Severe Thunderstorm Warning | MRX | 53 min |
| Jun 28, 4:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 1, 12:35 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 30, 3:14 PM EDT | Flood Watch | MRX | 24 hr |
| Jul 31, 8:28 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 1, 3:04 PM EDT | Flood Watch | MRX | 12 hr |
| Aug 4, 4:29 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 4, 4:58 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 4, 5:15 PM EDT | Severe Thunderstorm Warning | MRX | 60 min |
| Aug 4, 5:22 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 11, 11:17 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Sep 7, 2:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Sep 25, 5:24 AM EDT | Flash Flood Watch | MRX | 40 hr |
| Sep 25, 5:08 PM EDT | Areal Flood Advisory | MRX | 112 min |
| Sep 25, 5:38 PM EDT | Flash Flood Warning | MRX | 3 hr |
| Sep 25, 5:46 PM EDT | Flash Flood Warning | MRX | 3 hr |
| Sep 26, 8:29 AM EDT | Areal Flood Advisory | MRX | 2 hr |
| Sep 26, 10:25 AM EDT | Flash Flood Warning | MRX | 6 hr |
| Sep 26, 12:23 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 26, 4:12 PM EDT | Areal Flood Warning | MRX | 3 hr |
| Sep 26, 7:16 PM EDT | Areal Flood Warning | MRX | 2 hr |
| Oct 9, 3:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Oct 9, 4:27 PM EDT | Tornado Watch | SPC | 6 hr |
| Oct 9, 5:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Oct 9, 6:42 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Oct 9, 7:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Oct 9, 7:17 PM EDT | Severe Thunderstorm Warning | MRX | 43 min |
| Oct 9, 9:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 17, 8:59 PM EDT | Freeze Watch | MRX | 13 hr |
| Oct 18, 10:00 AM EDT | Freeze Warning | MRX | 23 hr |
| Oct 19, 2:50 PM EDT | Freeze Warning | MRX | 18 hr |
| Dec 1, 5:26 PM EST | Wind Advisory | MRX | 31 hr |
| Dec 4, 3:00 PM EST | Winter Weather Advisory | MRX | 24 hr |
| Dec 8, 3:57 AM EST | Wind Advisory | MRX | 39 hr |
| Dec 9, 12:07 AM EST | Areal Flood Advisory | MRX | 3 hr |
| Dec 9, 3:51 PM EST | River Flood Warning | MRX | 6 hr |
| Dec 9, 3:51 PM EST | River Flood Warning | MRX | 37 hr |
| Dec 10, 4:20 AM EST | Wind Advisory | MRX | 11 hr |
| Dec 13, 9:07 PM EST | Dense Fog Advisory | MRX | 13 hr |
| Dec 17, 2:47 AM EST | Winter Storm Watch | MRX | 26 hr |
| Dec 18, 4:18 AM EST | Winter Storm Warning | MRX | 44 hr |
| Dec 18, 5:16 PM EST | Areal Flood Advisory | MRX | 119 min |
| Dec 18, 7:22 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 19, 4:07 AM EST | Winter Weather Advisory | MRX | 20 hr |
| Dec 23, 3:39 PM EST | Wind Advisory | MRX | 48 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 archive20082010
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.