Alert archive / Alabama / Dallas County
Weather alerts in Dallas County, Alabama, 2017
125 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Dallas County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 125
- Warnings
- 16
- Watches
- 19
- Advisories
- 55
- Busiest month
- January20 alerts
- Busiest day
- January 22, 20176 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Dallas County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 1 | 50% | 11 | 0% | |
| Flash flood warnings | 2 | 2 | 0% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Birmingham, AL: tornado warnings | 59 | 22 | 63% | 63 | 73% | 14 min |
| NWS Birmingham, AL: severe thunderstorm warnings | 170 | 108 | 36% | 708 | 57% | 21 min |
| NWS Birmingham, AL: flash flood warnings | 36 | 29 | 19% | 145 | 89% | 77 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 2, 12:59 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 2, 1:09 PM CST | Areal Flood Advisory | BMX | 2 hr |
| Jan 3, 10:13 AM CST | River Flood Warning | MOB | 3 days |
| Jan 4, 3:10 PM CST | Winter Storm Watch | BMX | 24 hr |
| Jan 5, 3:07 PM CST | Winter Weather Advisory | BMX | 42 hr |
| Jan 6, 4:15 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 7, 11:55 AM CST | Hard Freeze Warning | BMX | 22 hr |
| Jan 13, 3:36 AM CST | Dense Fog Advisory | BMX | 5 hr |
| Jan 18, 1:48 AM CST | Dense Fog Advisory | BMX | 6 hr |
| Jan 19, 4:37 AM CST | Dense Fog Advisory | BMX | 5 hr |
| Jan 19, 3:10 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 21, 3:00 AM CST | Mesoscale Discussion | SPC | 90 min |
| Jan 21, 3:52 AM CST | Special Weather Statement | BMX | 38 min |
| Jan 21, 3:56 AM CST | Tornado Watch | SPC | 8 hr |
| Jan 21, 6:51 PM CST | Tornado Watch | SPC | 8 hr |
| Jan 21, 8:30 PM CST | Mesoscale Discussion | SPC | 90 min |
| Jan 21, 9:57 PM CST | Mesoscale Discussion | SPC | 93 min |
| Jan 21, 11:49 PM CST | Mesoscale Discussion | SPC | 116 min |
| Jan 22, 9:06 AM CST | Wind Advisory | BMX | 33 hr |
| Jan 22, 11:57 AM CST | Severe Thunderstorm Warning | BMX | 63 min |
| Feb 8, 1:29 AM CST | Dense Fog Advisory | BMX | 7 hr |
| Feb 19, 12:39 AM CST | Dense Fog Advisory | BMX | 8 hr |
| Feb 27, 10:25 PM CST | Dense Fog Advisory | BMX | 11 hr |
| Mar 1, 3:43 PM CST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 1, 5:54 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Mar 10, 3:51 AM CST | Special Weather Statement | BMX | 54 min |
| Mar 13, 3:19 PM CDT | Freeze Warning | BMX | 43 hr |
| Mar 14, 2:40 AM CDT | Freeze Warning | BMX | 55 hr |
| Mar 25, 12:08 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 30, 12:45 PM CDT | Special Weather Statement | BMX | 60 min |
| Mar 30, 1:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Apr 3, 3:59 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 3, 4:25 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 3, 5:09 AM CDT | Special Weather Statement | BMX | 66 min |
| Apr 4, 2:36 AM CDT | Dense Fog Advisory | BMX | 6 hr |
| Apr 5, 1:37 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 5, 3:41 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 6:15 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 5, 6:54 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 5, 9:00 AM CDT | Severe Thunderstorm Warning | BMX | 75 min |
| Apr 5, 4:37 PM CDT | Wind Advisory | BMX | 26 hr |
| Apr 22, 6:40 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Apr 26, 11:02 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 27, 1:36 AM CDT | Mesoscale Discussion | SPC | 114 min |
| Apr 29, 3:06 AM CDT | Wind Advisory | BMX | 16 hr |
| Apr 29, 4:33 PM CDT | Wind Advisory | BMX | 50 hr |
| Apr 30, 10:06 AM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 30, 10:36 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 30, 3:12 PM CDT | Special Weather Statement | BMX | 63 min |
| May 1, 12:35 AM CDT | Special Weather Statement | BMX | 55 min |
| May 3, 3:19 PM CDT | Wind Advisory | BMX | 30 hr |
| May 20, 6:11 PM CDT | Areal Flood Advisory | BMX | 2 hr |
| May 20, 7:51 PM CDT | Flash Flood Warning | BMX | 3 hr |
| May 20, 10:35 PM CDT | Flash Flood Warning | BMX | 6 hr |
| May 21, 4:05 PM CDT | Flash Flood Watch | BMX | 47 hr |
| Jun 11, 5:09 PM CDT | Special Weather Statement | BMX | 66 min |
| Jun 15, 3:04 PM CDT | Special Weather Statement | BMX | 56 min |
| Jun 21, 3:26 AM CDT | Flash Flood Watch | BMX | 64 hr |
| Jun 21, 3:15 PM CDT | Areal Flood Advisory | BMX | 4 hr |
| Jun 22, 2:57 AM CDT | Tornado Watch | SPC | 10 hr |
| Jun 22, 11:50 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 22, 1:04 PM CDT | Tornado Watch | SPC | 9 hr |
| Jun 22, 3:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 22, 4:19 PM CDT | Areal Flood Warning | BMX | 3 hr |
| Jun 22, 8:57 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jun 22, 11:34 PM CDT | Areal Flood Advisory | BMX | 6 hr |
| Jun 22, 11:37 PM CDT | River Flood Warning | MOB | 5 days |
| Jun 23, 2:22 PM CDT | River Flood Warning | BMX | 54 hr |
| Jun 23, 5:22 PM CDT | Areal Flood Warning | BMX | 3 hr |
| Jun 25, 7:27 AM CDT | River Flood Warning | BMX | 3 days |
| Jun 30, 3:48 PM CDT | Areal Flood Advisory | BMX | 117 min |
| Jul 1, 7:20 PM CDT | Special Weather Statement | BMX | 40 min |
| Jul 1, 8:09 PM CDT | Areal Flood Advisory | BMX | 2 hr |
| Jul 1, 10:16 PM CDT | Areal Flood Advisory | BMX | 119 min |
| Jul 7, 3:38 PM CDT | Special Weather Statement | BMX | 37 min |
| Jul 7, 4:17 PM CDT | Special Weather Statement | BMX | 43 min |
| Jul 21, 11:45 AM CDT | Heat Advisory | BMX | 7 hr |
| Jul 22, 3:00 AM CDT | Heat Advisory | BMX | 18 hr |
| Jul 23, 3:16 AM CDT | Heat Advisory | BMX | 18 hr |
| Jul 26, 12:29 PM CDT | Heat Advisory | BMX | 9 hr |
| Jul 26, 3:02 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 26, 3:14 PM CDT | Special Weather Statement | BMX | 46 min |
| Jul 26, 3:51 PM CDT | Special Weather Statement | BMX | 39 min |
| Jul 27, 4:25 AM CDT | Heat Advisory | BMX | 15 hr |
| Aug 3, 2:23 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Aug 8, 9:54 AM CDT | Flash Flood Watch | BMX | 33 hr |
| Aug 10, 7:05 AM CDT | Dense Fog Advisory | BMX | 115 min |
| Aug 10, 5:03 PM CDT | Areal Flood Advisory | BMX | 117 min |
| Aug 10, 5:47 PM CDT | Areal Flood Advisory | BMX | 118 min |
| Aug 11, 4:55 AM CDT | Dense Fog Advisory | BMX | 3 hr |
| Aug 12, 4:49 AM CDT | Dense Fog Advisory | BMX | 4 hr |
| Aug 15, 3:15 PM CDT | Special Weather Statement | BMX | 30 min |
| Aug 31, 11:13 AM CDT | Tornado Watch | SPC | 11 hr |
| Aug 31, 2:49 PM CDT | Wind Advisory | BMX | 27 hr |
| Sep 10, 4:07 PM CDT | Wind Advisory | BMX | 36 hr |
| Sep 17, 3:19 AM CDT | Dense Fog Advisory | BMX | 6 hr |
| Sep 18, 12:31 AM CDT | Dense Fog Advisory | BMX | 8 hr |
| Oct 6, 4:14 PM CDT | Tropical Storm Watch | BMX | 42 hr |
| Oct 7, 2:51 AM CDT | Flash Flood Watch | BMX | 35 hr |
| Oct 7, 4:27 AM CDT | Tropical Storm Warning | BMX | 30 hr |
| Oct 7, 12:25 PM CDT | Wind Advisory | BMX | 31 hr |
| Oct 8, 1:41 AM CDT | Tornado Watch | SPC | 8 hr |
| Oct 8, 4:47 AM CDT | Areal Flood Advisory | BMX | 6 hr |
| Oct 8, 9:04 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Oct 9, 9:59 PM CDT | Dense Fog Advisory | BMX | 11 hr |
| Oct 10, 10:14 PM CDT | Dense Fog Advisory | BMX | 11 hr |
| Oct 29, 3:07 AM CDT | Frost Advisory | BMX | 29 hr |
| Nov 5, 3:36 AM CST | Dense Fog Advisory | BMX | 5 hr |
| Nov 6, 8:26 PM CST | Dense Fog Advisory | BMX | 13 hr |
| Nov 9, 10:06 PM CST | Dense Fog Advisory | BMX | 9 hr |
| Nov 13, 3:28 AM CST | Dense Fog Advisory | BMX | 5 hr |
| Nov 18, 3:23 PM CST | Freeze Watch | BMX | 11 hr |
| Nov 18, 7:50 PM CST | Special Weather Statement | BMX | 55 min |
| Nov 19, 2:45 AM CST | Freeze Warning | BMX | 29 hr |
| Nov 29, 9:27 PM CST | Dense Fog Advisory | BMX | 12 hr |
| Nov 30, 6:07 PM CST | Dense Fog Advisory | BMX | 15 hr |
| Dec 1, 3:00 PM CST | Dense Fog Advisory | BMX | 18 hr |
| Dec 2, 2:24 PM CST | Dense Fog Advisory | BMX | 19 hr |
| Dec 3, 11:39 PM CST | Dense Fog Advisory | BMX | 6 hr |
| Dec 7, 3:34 AM CST | Winter Weather Advisory | BMX | 51 hr |
| Dec 8, 2:13 AM CST | Winter Storm Warning | BMX | 29 hr |
| Dec 17, 8:31 PM CST | Dense Fog Advisory | BMX | 12 hr |
| Dec 18, 5:48 PM CST | Dense Fog Advisory | BMX | 17 hr |
| Dec 19, 6:37 PM CST | Dense Fog Advisory | BMX | 11 hr |
| Dec 30, 2:54 AM CST | Winter Weather Advisory | BMX | 34 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 | 2 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 15 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| River Flood Warning | 4 |
| Flash Flood Watch | 4 |
| Areal Flood Advisory | 12 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 3 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 3 |
| Hard Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 26 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.