Alert archive / Tennessee / Hamilton County
Weather alerts in Hamilton County, Tennessee, 2013
133 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hamilton County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 133
- Warnings
- 52
- Watches
- 16
- Advisories
- 47
- Busiest month
- January30 alerts
- Busiest day
- January 30, 201310 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Hamilton County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 18 | 11 | 39% | 11 | 73% | 27 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Morristown, TN: tornado warnings | 8 | 2 | 75% | 2 | 50% | 38 min |
| NWS Morristown, TN: severe thunderstorm warnings | 153 | 105 | 31% | 161 | 83% | 22 min |
| NWS Morristown, TN: flash flood warnings | 24 | 16 | 33% | 26 | 96% | 45 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 13, 3:24 PM EST | Flood Watch | MRX | 4 days |
| Jan 13, 7:00 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 14, 1:23 AM EST | River Flood Warning | FFC | 3 days |
| Jan 14, 11:55 AM EST | River Flood Warning | MRX | 3 days |
| Jan 14, 6:08 PM EST | Areal Flood Advisory | MRX | 3 hr |
| Jan 14, 9:02 PM EST | Areal Flood Advisory | MRX | 5 hr |
| Jan 14, 10:44 PM EST | River Flood Warning | FFC | 71 hr |
| Jan 15, 1:46 AM EST | Areal Flood Advisory | MRX | 6 hr |
| Jan 15, 7:22 AM EST | Areal Flood Advisory | MRX | 5 hr |
| Jan 15, 12:19 PM EST | Areal Flood Advisory | MRX | 4 hr |
| Jan 15, 4:00 PM EST | Areal Flood Warning | MRX | 14 hr |
| Jan 15, 10:48 PM EST | Areal Flood Warning | MRX | 8 hr |
| Jan 16, 3:58 AM EST | Areal Flood Warning | MRX | 8 hr |
| Jan 16, 12:06 PM EST | Areal Flood Advisory | MRX | 4 hr |
| Jan 17, 4:09 AM EST | Winter Weather Advisory | MRX | 17 hr |
| Jan 17, 1:47 PM EST | Wind Advisory | MRX | 7 hr |
| Jan 23, 4:03 PM EST | Winter Storm Watch | MRX | 23 hr |
| Jan 24, 2:09 PM EST | Freezing Rain Advisory | MRX | 29 hr |
| Jan 29, 11:45 AM EST | Wind Advisory | MRX | 28 hr |
| Jan 30, 5:51 AM EST | Tornado Watch | SPC | 7 hr |
| Jan 30, 7:38 AM EST | Mesoscale Discussion | SPC | 97 min |
| Jan 30, 8:12 AM EST | Severe Thunderstorm Warning | MRX | 63 min |
| Jan 30, 8:17 AM EST | Severe Thunderstorm Warning | MRX | 43 min |
| Jan 30, 9:13 AM EST | Severe Thunderstorm Warning | MRX | 47 min |
| Jan 30, 10:05 AM EST | Areal Flood Advisory | MRX | 7 hr |
| Jan 30, 11:36 AM EST | Flood Watch | MRX | 10 hr |
| Jan 30, 12:54 PM EST | River Flood Warning | FFC | 24 hr |
| Jan 30, 4:10 PM EST | River Flood Warning | MRX | 39 hr |
| Jan 30, 5:02 PM EST | Areal Flood Warning | MRX | 6 hr |
| Jan 30, 10:06 PM EST | River Flood Warning | FFC | 34 hr |
| Feb 10, 3:13 AM EST | Flash Flood Watch | MRX | 17 hr |
| Mar 1, 4:06 PM EST | Winter Weather Advisory | MRX | 26 hr |
| Mar 5, 3:28 PM EST | Wind Advisory | MRX | 21 hr |
| Mar 18, 1:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Mar 18, 3:48 PM EDT | Severe Thunderstorm Warning | MRX | 42 min |
| Mar 24, 8:26 AM EDT | River Flood Warning | FFC | 23 hr |
| Mar 24, 3:45 PM EDT | Wind Advisory | MRX | 28 hr |
| Mar 26, 3:01 AM EDT | Freeze Watch | MRX | 24 hr |
| Mar 26, 3:01 AM EDT | Freeze Warning | MRX | 31 hr |
| Mar 27, 3:28 AM EDT | Freeze Watch | MRX | 24 hr |
| Mar 27, 3:28 AM EDT | Freeze Warning | MRX | 31 hr |
| Mar 28, 3:40 AM EDT | Freeze Warning | MRX | 29 hr |
| Apr 1, 5:10 AM EDT | Dense Fog Advisory | MRX | 4 hr |
| Apr 11, 6:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 11, 6:36 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 11, 6:52 PM EDT | Severe Thunderstorm Warning | MRX | 53 min |
| Apr 17, 10:30 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 17, 1:39 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 17, 4:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Apr 17, 5:34 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Apr 19, 2:52 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Apr 19, 2:38 PM EDT | Frost Advisory | MRX | 18 hr |
| Apr 28, 4:15 PM EDT | River Flood Warning | MRX | 42 hr |
| Apr 28, 5:11 PM EDT | River Flood Warning | FFC | 20 hr |
| Apr 29, 10:50 AM EDT | River Flood Warning | MRX | 39 hr |
| Apr 29, 2:10 PM EDT | River Flood Warning | FFC | 7 hr |
| May 3, 3:02 PM EDT | Flood Watch | MRX | 48 hr |
| May 4, 11:04 AM EDT | River Flood Warning | MRX | 4 days |
| May 4, 11:42 AM EDT | River Flood Warning | FFC | 3 days |
| May 4, 11:42 AM EDT | River Flood Warning | FFC | 54 hr |
| May 4, 5:04 PM EDT | Areal Flood Advisory | MRX | 6 hr |
| May 5, 4:07 AM EDT | Areal Flood Warning | MRX | 6 hr |
| May 9, 5:16 AM EDT | Dense Fog Advisory | MRX | 5 hr |
| May 19, 11:44 AM EDT | Severe Thunderstorm Warning | MRX | 46 min |
| May 19, 12:28 PM EDT | Severe Thunderstorm Warning | MRX | 62 min |
| May 19, 1:26 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| May 19, 5:40 PM EDT | River Flood Warning | FFC | 13 hr |
| May 20, 4:28 AM EDT | Dense Fog Advisory | MRX | 6 hr |
| May 21, 12:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 21, 3:26 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 22, 5:01 PM EDT | Severe Thunderstorm Warning | MRX | 59 min |
| Jun 1, 6:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 5, 4:26 PM EDT | Areal Flood Advisory | MRX | 109 min |
| Jun 8, 3:28 AM EDT | Dense Fog Advisory | MRX | 6 hr |
| Jun 9, 12:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 10, 3:02 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 6:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 13, 1:19 PM EDT | Mesoscale Discussion | SPC | 26 min |
| Jun 13, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 4:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 13, 4:42 PM EDT | Severe Thunderstorm Warning | MRX | 48 min |
| Jun 26, 10:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 27, 12:56 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 30, 9:43 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jul 1, 12:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 9:11 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 2, 4:27 AM EDT | Flood Watch | MRX | 6 days |
| Jul 3, 1:17 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 6, 3:51 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 6, 6:39 PM EDT | Areal Flood Advisory | MRX | 4 hr |
| Jul 6, 10:17 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 6, 10:53 PM EDT | River Flood Warning | MRX | 71 hr |
| Jul 7, 3:50 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 7, 5:30 AM EDT | River Flood Warning | FFC | 10 hr |
| Jul 7, 6:15 AM EDT | Areal Flood Warning | MRX | 6 hr |
| Jul 7, 10:28 AM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 7, 9:37 PM EDT | River Flood Warning | FFC | 39 hr |
| Jul 7, 11:07 PM EDT | Areal Flood Advisory | MRX | 113 min |
| Jul 8, 12:39 AM EDT | Areal Flood Warning | MRX | 3 hr |
| Jul 8, 5:11 AM EDT | River Flood Warning | FFC | 16 hr |
| Jul 8, 1:20 PM EDT | River Flood Warning | MRX | 33 hr |
| Jul 10, 6:53 PM EDT | Severe Thunderstorm Warning | MRX | 52 min |
| Jul 10, 7:38 PM EDT | Severe Thunderstorm Warning | MRX | 37 min |
| Jul 10, 10:43 PM EDT | Severe Thunderstorm Warning | MRX | 47 min |
| Jul 10, 11:16 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Jul 11, 12:15 AM EDT | River Flood Warning | FFC | 24 hr |
| Jul 13, 12:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 9:35 PM EDT | Areal Flood Advisory | MRX | 85 min |
| Jul 17, 10:24 PM EDT | Severe Thunderstorm Warning | MRX | 36 min |
| Jul 21, 3:29 PM EDT | Areal Flood Advisory | MRX | 2 hr |
| Jul 23, 2:05 PM EDT | Areal Flood Advisory | MRX | 115 min |
| Jul 27, 1:22 PM EDT | Severe Thunderstorm Warning | MRX | 38 min |
| Aug 7, 4:13 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 8, 4:45 PM EDT | Severe Thunderstorm Warning | MRX | 30 min |
| Aug 8, 5:55 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 11, 1:35 PM EDT | Areal Flood Advisory | MRX | 115 min |
| Aug 11, 2:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Aug 11, 6:40 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 12, 12:42 PM EDT | Areal Flood Advisory | MRX | 3 hr |
| Aug 12, 10:20 PM EDT | Areal Flood Advisory | MRX | 115 min |
| Aug 22, 4:46 AM EDT | Dense Fog Advisory | MRX | 5 hr |
| Aug 23, 6:22 PM EDT | Severe Thunderstorm Warning | MRX | 53 min |
| Aug 23, 7:11 PM EDT | Severe Thunderstorm Warning | MRX | 64 min |
| Oct 17, 10:23 PM EDT | Dense Fog Advisory | MRX | 12 hr |
| Oct 23, 3:46 AM EDT | Frost Advisory | MRX | 28 hr |
| Oct 24, 3:54 AM EDT | Freeze Warning | MRX | 30 hr |
| Oct 25, 10:16 AM EDT | Freeze Warning | MRX | 24 hr |
| Oct 31, 3:00 AM EDT | Wind Advisory | MRX | 28 hr |
| Nov 26, 1:40 PM EST | Areal Flood Advisory | MRX | 3 hr |
| Dec 21, 11:38 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
| Dec 22, 3:37 AM EST | Severe Thunderstorm Warning | MRX | 38 min |
| Dec 22, 5:12 AM EST | Mesoscale Discussion | SPC | 63 min |
| Dec 22, 10:27 AM EST | River Flood Warning | FFC | 14 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 | 18 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 18 |
| Flooding | |
| Areal Flood Warning | 7 |
| River Flood Warning | 22 |
| Flash Flood Watch | 1 |
| Flood Watch | 4 |
| Areal Flood Advisory | 31 |
| Winter | |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 2 |
| Cold | |
| Freeze Warning | 5 |
| Freeze Watch | 2 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.