Alert archive / Alabama / Jefferson County
Weather alerts in Jefferson County, Alabama, 2013
175 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 175
- Warnings
- 37
- Watches
- 27
- Advisories
- 63
- Busiest month
- March40 alerts
- Busiest day
- June 5, 20136 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Jefferson County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 3 | 40% | 25 | 52% | 15 min |
| Flash flood warnings | 9 | 9 | 0% | 17 | 76% | 29 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Birmingham, AL: tornado warnings | 14 | 3 | 79% | 21 | 29% | 14 min |
| NWS Birmingham, AL: severe thunderstorm warnings | 129 | 91 | 29% | 341 | 69% | 19 min |
| NWS Birmingham, AL: flash flood warnings | 48 | 36 | 25% | 76 | 84% | 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 10, 8:27 PM CST | Special Weather Statement | BMX | 63 min |
| Jan 10, 9:29 PM CST | Special Weather Statement | BMX | 46 min |
| Jan 10, 10:11 PM CST | Special Weather Statement | BMX | 64 min |
| Jan 13, 6:12 PM CST | Special Weather Statement | BMX | 48 min |
| Jan 13, 6:17 PM CST | Areal Flood Advisory | BMX | 3 hr |
| Jan 14, 4:25 AM CST | Flood Watch | BMX | 44 hr |
| Jan 14, 9:34 AM CST | River Flood Warning | BMX | 3 days |
| Jan 15, 5:34 PM CST | Dense Fog Advisory | BMX | 12 hr |
| Jan 16, 4:11 AM CST | Flood Watch | BMX | 21 hr |
| Jan 16, 3:43 PM CST | Winter Storm Watch | BMX | 6 hr |
| Jan 16, 3:53 PM CST | Wind Advisory | BMX | 26 hr |
| Jan 16, 10:04 PM CST | Winter Storm Warning | BMX | 20 hr |
| Jan 29, 5:47 AM CST | Wind Advisory | BMX | 35 hr |
| Jan 29, 7:46 AM CST | Dense Fog Advisory | BMX | 3 hr |
| Jan 30, 1:31 AM CST | Mesoscale Discussion | SPC | 29 min |
| Jan 30, 1:46 AM CST | Tornado Watch | SPC | 8 hr |
| Jan 30, 7:43 AM CST | Mesoscale Discussion | SPC | 62 min |
| Jan 30, 8:48 AM CST | Areal Flood Advisory | BMX | 117 min |
| Jan 30, 9:43 AM CST | Flash Flood Warning | BMX | 3 hr |
| Feb 1, 5:07 AM CST | Red Flag Warning | BMX | 13 hr |
| Feb 2, 7:22 PM CST | Dense Fog Advisory | BMX | 14 hr |
| Feb 5, 9:39 PM CST | Dense Fog Advisory | BMX | 11 hr |
| Feb 10, 6:11 AM CST | Flash Flood Watch | BMX | 65 hr |
| Feb 10, 2:39 PM CST | Special Weather Statement | BMX | 51 min |
| Feb 10, 9:14 PM CST | Flash Flood Watch | BMX | 50 hr |
| Feb 16, 5:14 AM CST | Fire Weather Watch | BMX | 12 hr |
| Feb 16, 11:09 AM CST | Wind Advisory | BMX | 7 hr |
| Feb 16, 5:38 PM CST | Red Flag Warning | BMX | 24 hr |
| Feb 18, 8:57 PM CST | Wind Advisory | BMX | 9 hr |
| Feb 19, 2:20 PM CST | Fire Weather Watch | BMX | 27 hr |
| Feb 21, 11:16 PM CST | Areal Flood Advisory | BMX | 3 hr |
| Feb 24, 12:22 AM CST | Dense Fog Advisory | BMX | 8 hr |
| Feb 25, 4:29 AM CST | Wind Advisory | BMX | 24 hr |
| Mar 1, 4:15 PM CST | Winter Weather Advisory | BMX | 18 hr |
| Mar 5, 4:28 AM CST | Wind Advisory | BMX | 16 hr |
| Mar 5, 12:33 PM CST | Special Weather Statement | BMX | 42 min |
| Mar 5, 1:08 PM CST | Severe Thunderstorm Warning | BMX | 67 min |
| Mar 5, 1:11 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 6, 4:26 AM CST | Wind Advisory | BMX | 10 hr |
| Mar 8, 4:07 AM CST | Fire Weather Watch | BMX | 7 hr |
| Mar 8, 11:13 AM CST | Red Flag Warning | BMX | 6 hr |
| Mar 9, 6:49 AM CST | Red Flag Warning | BMX | 10 hr |
| Mar 10, 6:59 AM CDT | Wind Advisory | BMX | 18 hr |
| Mar 11, 1:34 AM CDT | Wind Advisory | BMX | 5 hr |
| Mar 13, 4:30 AM CDT | Red Flag Warning | BMX | 15 hr |
| Mar 13, 4:30 AM CDT | Red Flag Warning | BMX | 38 hr |
| Mar 18, 12:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Mar 18, 1:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Mar 18, 1:31 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Mar 18, 3:06 PM CDT | Severe Thunderstorm Warning | BMX | 39 min |
| Mar 19, 4:40 AM CDT | Red Flag Warning | BMX | 14 hr |
| Mar 19, 3:28 PM CDT | Freeze Watch | BMX | 12 hr |
| Mar 20, 3:42 AM CDT | Freeze Warning | BMX | 29 hr |
| Mar 20, 4:46 AM CDT | Fire Weather Watch | BMX | 14 hr |
| Mar 20, 4:46 AM CDT | Red Flag Warning | BMX | 14 hr |
| Mar 20, 7:12 PM CDT | Red Flag Warning | BMX | 24 hr |
| Mar 23, 3:41 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Mar 23, 6:47 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Mar 23, 6:47 AM CDT | Special Weather Statement | BMX | 58 min |
| Mar 23, 6:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Mar 23, 6:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 23, 9:29 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Mar 23, 10:55 PM CDT | Special Weather Statement | BMX | 50 min |
| Mar 24, 2:17 AM CDT | Special Weather Statement | BMX | 43 min |
| Mar 24, 2:39 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Mar 24, 4:06 AM CDT | Wind Advisory | BMX | 17 hr |
| Mar 24, 9:36 PM CDT | Wind Advisory | BMX | 2 hr |
| Mar 24, 9:36 PM CDT | Wind Advisory | BMX | 20 hr |
| Mar 25, 6:29 AM CDT | Freeze Warning | BMX | 27 hr |
| Mar 26, 6:40 AM CDT | Freeze Warning | BMX | 26 hr |
| Mar 26, 3:03 PM CDT | Freeze Watch | BMX | 23 hr |
| Mar 26, 3:06 PM CDT | Fire Weather Watch | BMX | 27 hr |
| Mar 27, 2:23 PM CDT | Freeze Warning | BMX | 19 hr |
| Apr 11, 11:56 AM CDT | Tornado Watch | SPC | 7 hr |
| Apr 11, 2:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 11, 3:43 PM CDT | Special Weather Statement | BMX | 62 min |
| Apr 18, 11:55 PM CDT | Wind Advisory | BMX | 8 hr |
| Apr 19, 1:40 AM CDT | Special Weather Statement | BMX | 50 min |
| Apr 19, 1:52 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Apr 19, 1:26 PM CDT | Frost Advisory | BMX | 19 hr |
| Apr 25, 3:26 PM CDT | Fire Weather Watch | BMX | 12 hr |
| Apr 26, 3:39 AM CDT | Red Flag Warning | BMX | 14 hr |
| Apr 27, 5:24 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 29, 4:12 AM CDT | Dense Fog Advisory | BMX | 4 hr |
| May 5, 4:49 AM CDT | Dense Fog Advisory | BMX | 3 hr |
| May 7, 2:17 AM CDT | Dense Fog Advisory | BMX | 7 hr |
| May 17, 1:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 18, 1:39 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| May 18, 3:29 AM CDT | Flash Flood Warning | BMX | 3 hr |
| May 18, 10:57 AM CDT | Flash Flood Watch | BMX | 32 hr |
| May 18, 2:26 PM CDT | River Flood Warning | BMX | 18 hr |
| May 22, 3:55 PM CDT | Severe Thunderstorm Warning | BMX | 35 min |
| May 23, 6:06 AM CDT | Dense Fog Advisory | BMX | 3 hr |
| Jun 1, 5:05 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 1, 6:30 PM CDT | Special Weather Statement | BMX | 90 min |
| Jun 5, 11:53 AM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 5, 1:45 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jun 5, 2:44 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Jun 5, 4:44 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jun 5, 5:07 PM CDT | Special Weather Statement | BMX | 53 min |
| Jun 5, 5:36 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Jun 7, 11:40 AM CDT | Areal Flood Advisory | BMX | 110 min |
| Jun 8, 3:19 AM CDT | Dense Fog Advisory | BMX | 6 hr |
| Jun 13, 4:05 AM CDT | Heat Advisory | BMX | 14 hr |
| Jun 13, 3:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 13, 6:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 17, 2:37 PM CDT | Special Weather Statement | BMX | 38 min |
| Jun 19, 4:53 AM CDT | Dense Fog Advisory | BMX | 3 hr |
| Jun 27, 5:41 AM CDT | Special Weather Statement | BMX | 49 min |
| Jun 28, 9:42 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 11:29 AM CDT | Severe Thunderstorm Warning | BMX | 46 min |
| Jun 28, 7:46 PM CDT | Severe Thunderstorm Warning | BMX | 44 min |
| Jul 3, 7:22 AM CDT | Flash Flood Watch | BMX | 4 days |
| Jul 8, 7:00 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 10, 4:51 PM CDT | Special Weather Statement | BMX | 39 min |
| Jul 10, 5:27 PM CDT | Special Weather Statement | BMX | 48 min |
| Jul 10, 5:52 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 10, 6:29 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Jul 12, 5:56 AM CDT | Dense Fog Advisory | BMX | 3 hr |
| Jul 17, 3:46 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Jul 18, 12:44 AM CDT | Special Weather Statement | BMX | 46 min |
| Jul 18, 1:28 AM CDT | Special Weather Statement | BMX | 47 min |
| Jul 18, 1:35 AM CDT | Areal Flood Advisory | BMX | 115 min |
| Jul 21, 6:10 PM CDT | Areal Flood Advisory | BMX | 2 hr |
| Jul 21, 8:24 PM CDT | Areal Flood Advisory | BMX | 111 min |
| Jul 21, 8:59 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Jul 23, 6:16 AM CDT | Special Weather Statement | BMX | 44 min |
| Jul 23, 1:11 PM CDT | Special Weather Statement | BMX | 64 min |
| Jul 23, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 1:29 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 23, 1:58 PM CDT | Areal Flood Advisory | BMX | 2 hr |
| Jul 23, 2:30 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Jul 30, 6:24 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 31, 11:47 PM CDT | Special Weather Statement | BMX | 43 min |
| Aug 1, 12:02 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Aug 1, 12:38 AM CDT | Areal Flood Advisory | BMX | 112 min |
| Aug 1, 3:32 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Aug 1, 12:45 PM CDT | River Flood Warning | BMX | 19 hr |
| Aug 6, 12:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Aug 7, 4:59 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Aug 7, 6:22 PM CDT | Special Weather Statement | BMX | 38 min |
| Aug 7, 6:48 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Aug 8, 1:06 PM CDT | Special Weather Statement | BMX | 39 min |
| Aug 8, 1:40 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Aug 9, 4:24 PM CDT | Areal Flood Advisory | BMX | 66 min |
| Aug 11, 4:14 PM CDT | Areal Flood Advisory | BMX | 61 min |
| Aug 13, 6:38 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Aug 20, 1:04 PM CDT | Areal Flood Advisory | BMX | 116 min |
| Aug 22, 5:53 PM CDT | Areal Flood Advisory | BMX | 52 min |
| Sep 1, 1:13 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 21, 4:35 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Oct 17, 11:37 PM CDT | Dense Fog Advisory | BMX | 9 hr |
| Oct 24, 3:10 AM CDT | Frost Advisory | BMX | 30 hr |
| Oct 24, 3:52 PM CDT | Freeze Watch | BMX | 11 hr |
| Oct 25, 3:09 AM CDT | Freeze Warning | BMX | 30 hr |
| Nov 3, 9:22 PM CST | Frost Advisory | BMX | 9 hr |
| Nov 7, 3:29 PM CST | Frost Advisory | BMX | 17 hr |
| Nov 11, 2:30 PM CST | Freeze Watch | BMX | 7 hr |
| Nov 11, 2:30 PM CST | Freeze Watch | BMX | 7 hr |
| Nov 11, 9:19 PM CST | Freeze Warning | BMX | 36 hr |
| Nov 11, 9:19 PM CST | Freeze Warning | BMX | 60 hr |
| Nov 13, 4:22 AM CST | Fire Weather Watch | BMX | 24 hr |
| Nov 14, 4:11 AM CST | Red Flag Warning | BMX | 13 hr |
| Nov 23, 4:36 AM CST | Fire Weather Watch | BMX | 11 hr |
| Nov 23, 3:08 PM CST | Red Flag Warning | BMX | 25 hr |
| Nov 27, 4:07 AM CST | Wind Advisory | BMX | 13 hr |
| Dec 2, 9:53 PM CST | Dense Fog Advisory | BMX | 13 hr |
| Dec 3, 8:59 PM CST | Dense Fog Advisory | BMX | 7 hr |
| Dec 8, 7:53 PM CST | Areal Flood Advisory | BMX | 6 hr |
| Dec 21, 2:48 AM CST | Wind Advisory | BMX | 21 hr |
| Dec 21, 8:16 PM CST | Tornado Watch | SPC | 6 hr |
| Dec 22, 12:56 AM CST | Special Weather Statement | BMX | 49 min |
| Dec 22, 1:34 AM CST | Mesoscale Discussion | SPC | 56 min |
| Dec 22, 1:43 AM CST | Special Weather Statement | BMX | 47 min |
| Dec 22, 2:39 AM CST | Areal Flood Advisory | BMX | 3 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 | 5 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 26 |
| Flooding | |
| Flash Flood Warning | 9 |
| River Flood Warning | 3 |
| Flash Flood Watch | 4 |
| Flood Watch | 2 |
| Areal Flood Advisory | 27 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 7 |
| Freeze Watch | 5 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 15 |
| Fire | |
| Red Flag Warning | 12 |
| Fire Weather Watch | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 15 |
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.