Alert archive / Tennessee / Perry County
Weather alerts in Perry County, Tennessee, 2015
133 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Perry County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 133
- Warnings
- 26
- Watches
- 18
- Advisories
- 47
- Busiest month
- February23 alerts
- Busiest day
- February 22, 20156 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 2 tornado warnings covering Perry County in 2015 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 3 minutes after it went out.
Perry County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 2 | 100% | 3 min |
| Severe thunderstorm warnings | 9 | 5 | 44% | 3 | 33% | 5 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Nashville, TN: tornado warnings | 28 | 6 | 79% | 20 | 50% | 9 min |
| NWS Nashville, TN: severe thunderstorm warnings | 171 | 89 | 48% | 318 | 70% | 17 min |
| NWS Nashville, TN: flash flood warnings | 20 | 12 | 40% | 35 | 71% | 59 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 3, 3:08 AM CST | Flash Flood Watch | OHX | 18 hr |
| Jan 7, 2:41 AM CST | Wind Chill Advisory | OHX | 30 hr |
| Feb 14, 10:03 AM CST | Wind Chill Advisory | OHX | 23 hr |
| Feb 14, 10:03 AM CST | Winter Storm Watch | OHX | 17 hr |
| Feb 15, 3:11 AM CST | Winter Storm Warning | OHX | 35 hr |
| Feb 16, 2:57 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 16, 8:54 AM CST | Ice Storm Warning | OHX | 24 hr |
| Feb 16, 9:09 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 17, 3:40 PM CST | Winter Weather Advisory | OHX | 26 hr |
| Feb 18, 8:43 AM CST | Wind Chill Advisory | OHX | 27 hr |
| Feb 18, 2:54 PM CST | Winter Storm Watch | OHX | 23 hr |
| Feb 19, 1:33 PM CST | Winter Storm Warning | OHX | 15 hr |
| Feb 20, 4:05 AM CST | Ice Storm Warning | OHX | 29 hr |
| Feb 20, 2:02 PM CST | Flood Watch | OHX | 46 hr |
| Feb 20, 3:00 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 20, 10:22 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 21, 8:59 AM CST | Areal Flood Advisory | OHX | 39 days |
| Feb 21, 6:15 PM CST | Areal Flood Advisory | OHX | 10 hr |
| Feb 21, 9:07 PM CST | Areal Flood Advisory | OHX | 6 hr |
| Feb 22, 2:55 AM CST | Areal Flood Advisory | OHX | 9 hr |
| Feb 22, 3:57 AM CST | Areal Flood Advisory | OHX | 8 hr |
| Feb 22, 4:26 AM CST | River Flood Advisory | OHX | 36 hr |
| Feb 22, 7:32 AM CST | River Flood Warning | OHX | 45 hr |
| Feb 24, 12:00 AM CST | River Flood Advisory | OHX | 11 hr |
| Feb 24, 2:16 PM CST | Winter Weather Advisory | OHX | 37 hr |
| Mar 2, 2:34 PM CST | Winter Storm Watch | OHX | 25 hr |
| Mar 2, 2:50 PM CST | Flood Watch | OHX | 44 hr |
| Mar 3, 3:14 PM CST | Winter Storm Warning | OHX | 45 hr |
| Mar 3, 3:14 PM CST | Winter Weather Advisory | OHX | 20 hr |
| Mar 4, 9:49 PM CST | River Flood Advisory | OHX | 48 hr |
| Mar 4, 11:54 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Mar 5, 4:57 AM CST | Wind Chill Advisory | OHX | 27 hr |
| Mar 10, 11:22 AM CDT | River Flood Advisory | MEG | 4 days |
| Mar 11, 1:17 PM CDT | River Flood Advisory | OHX | 61 hr |
| Mar 12, 3:12 AM CDT | Flood Watch | OHX | 47 hr |
| Mar 14, 9:28 PM CDT | River Flood Advisory | MEG | 13 hr |
| Mar 16, 8:39 PM CDT | River Flood Advisory | MEG | 65 hr |
| Mar 26, 12:41 PM CDT | Freeze Watch | OHX | 15 hr |
| Mar 27, 3:50 AM CDT | Hard Freeze Watch | OHX | 24 hr |
| Mar 27, 3:50 AM CDT | Hard Freeze Warning | OHX | 30 hr |
| Mar 28, 3:48 AM CDT | Hard Freeze Warning | OHX | 30 hr |
| Apr 2, 1:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Apr 2, 2:50 PM CDT | Severe Thunderstorm Warning | OHX | 25 min |
| Apr 3, 3:47 AM CDT | Wind Advisory | OHX | 18 hr |
| Apr 3, 12:14 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 3, 4:55 PM CDT | Severe Thunderstorm Warning | OHX | 50 min |
| Apr 4, 2:41 AM CDT | Frost Advisory | OHX | 29 hr |
| Apr 9, 7:00 PM CDT | Special Weather Statement | OHX | 45 min |
| Apr 15, 10:51 PM CDT | Special Weather Statement | OHX | 39 min |
| Apr 15, 11:34 PM CDT | Special Weather Statement | OHX | 41 min |
| Apr 19, 1:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 20, 12:06 AM CDT | Severe Thunderstorm Warning | OHX | 39 min |
| Apr 20, 12:05 PM CDT | River Flood Advisory | OHX | 37 hr |
| Apr 21, 11:47 AM CDT | River Flood Advisory | MEG | 5 days |
| Apr 26, 1:02 PM CDT | River Flood Advisory | MEG | 4 days |
| May 18, 4:20 AM CDT | Special Weather Statement | OHX | 40 min |
| May 27, 2:46 PM CDT | Special Weather Statement | OHX | 29 min |
| May 30, 3:43 PM CDT | Special Weather Statement | OHX | 32 min |
| May 30, 4:03 PM CDT | Severe Thunderstorm Warning | OHX | 27 min |
| May 31, 1:25 PM CDT | Special Weather Statement | OHX | 35 min |
| May 31, 1:56 PM CDT | Severe Thunderstorm Warning | OHX | 34 min |
| May 31, 1:59 PM CDT | Special Weather Statement | OHX | 31 min |
| Jun 8, 12:08 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 8, 12:57 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 8, 3:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 8, 3:46 PM CDT | Special Weather Statement | OHX | 44 min |
| Jun 8, 7:50 PM CDT | Special Weather Statement | OHX | 25 min |
| Jun 8, 8:12 PM CDT | Special Weather Statement | OHX | 48 min |
| Jun 8, 8:22 PM CDT | Severe Thunderstorm Warning | OHX | 38 min |
| Jun 9, 5:01 AM CDT | Dense Fog Advisory | OHX | 3 hr |
| Jun 23, 8:59 PM CDT | Special Weather Statement | OHX | 31 min |
| Jun 23, 9:05 PM CDT | Severe Thunderstorm Warning | OHX | 25 min |
| Jun 23, 9:44 PM CDT | Special Weather Statement | OHX | 46 min |
| Jun 23, 9:56 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jun 25, 3:12 AM CDT | Heat Advisory | OHX | 16 hr |
| Jun 26, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 26, 6:40 PM CDT | Severe Thunderstorm Warning | OHX | 35 min |
| Jun 26, 6:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 29, 5:27 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Jun 29, 9:56 PM CDT | Areal Flood Advisory | OHX | 3 hr |
| Jun 29, 11:06 PM CDT | Flash Flood Warning | OHX | 3 hr |
| Jun 30, 9:23 PM CDT | River Flood Advisory | MEG | 12 days |
| Jul 1, 11:29 AM CDT | Mesoscale Discussion | SPC | 61 min |
| Jul 1, 11:35 AM CDT | Special Weather Statement | OHX | 25 min |
| Jul 1, 11:45 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 2, 5:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 2, 9:50 PM CDT | Flash Flood Warning | OHX | 3 hr |
| Jul 4, 8:59 PM CDT | Flash Flood Warning | OHX | 3 hr |
| Jul 14, 1:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 2:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 14, 2:58 PM CDT | Severe Thunderstorm Warning | OHX | 32 min |
| Jul 14, 3:32 PM CDT | Special Weather Statement | OHX | 58 min |
| Jul 14, 3:50 PM CDT | Areal Flood Advisory | OHX | 5 hr |
| Jul 14, 5:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 4:00 AM CDT | Heat Advisory | OHX | 63 hr |
| Jul 28, 11:26 AM CDT | Heat Advisory | OHX | 8 hr |
| Jul 28, 9:06 PM CDT | Special Weather Statement | OHX | 24 min |
| Jul 29, 3:39 AM CDT | Heat Advisory | OHX | 15 hr |
| Aug 5, 2:11 PM CDT | Special Weather Statement | OHX | 34 min |
| Aug 16, 7:49 AM CDT | Areal Flood Advisory | OHX | 3 hr |
| Aug 19, 12:30 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 19, 4:50 PM CDT | Areal Flood Advisory | OHX | 5 hr |
| Sep 9, 3:51 PM CDT | Special Weather Statement | OHX | 24 min |
| Sep 11, 1:33 PM CDT | Special Weather Statement | OHX | 27 min |
| Sep 11, 2:01 PM CDT | Special Weather Statement | OHX | 29 min |
| Oct 16, 1:42 PM CDT | Frost Advisory | OHX | 18 hr |
| Oct 17, 1:57 AM CDT | Frost Advisory | OHX | 31 hr |
| Oct 17, 2:49 PM CDT | Freeze Warning | OHX | 18 hr |
| Oct 18, 2:03 AM CDT | Frost Advisory | OHX | 30 hr |
| Nov 3, 12:18 AM CST | Dense Fog Advisory | OHX | 11 hr |
| Nov 12, 1:16 PM CST | Freeze Watch | OHX | 14 hr |
| Nov 13, 3:29 AM CST | Freeze Warning | OHX | 30 hr |
| Nov 17, 3:37 AM CST | Wind Advisory | OHX | 32 hr |
| Dec 2, 10:16 AM CST | River Flood Advisory | OHX | 14 hr |
| Dec 9, 10:00 PM CST | Dense Fog Advisory | OHX | 10 hr |
| Dec 13, 2:34 AM CST | Wind Advisory | OHX | 27 hr |
| Dec 23, 2:49 PM CST | Mesoscale Discussion | SPC | 86 min |
| Dec 23, 4:26 PM CST | Mesoscale Discussion | SPC | 64 min |
| Dec 23, 4:49 PM CST | Tornado Watch | SPC | 6 hr |
| Dec 23, 5:52 PM CST | Tornado Warning | OHX | 23 min |
| Dec 23, 6:13 PM CST | Tornado Warning | OHX | 32 min |
| Dec 23, 6:35 PM CST | Mesoscale Discussion | SPC | 55 min |
| Dec 24, 8:47 PM CST | Flood Watch | OHX | 33 hr |
| Dec 25, 4:35 AM CST | Special Weather Statement | OHX | 40 min |
| Dec 25, 9:08 AM CST | River Flood Advisory | OHX | 58 hr |
| Dec 25, 8:02 PM CST | River Flood Warning | MEG | 19 days |
| Dec 26, 8:38 AM CST | River Flood Advisory | OHX | 36 hr |
| Dec 26, 9:08 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 26, 8:10 PM CST | River Flood Warning | OHX | 12 days |
| Dec 27, 1:04 PM CST | Flash Flood Watch | OHX | 29 hr |
| Dec 28, 1:30 AM CST | Wind Advisory | OHX | 17 hr |
| Dec 28, 8:38 AM CST | Mesoscale Discussion | SPC | 67 min |
| Dec 29, 2:01 AM CST | River Flood Advisory | OHX | 33 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 archive20142016
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.