Alert archive / Alabama / Shelby County
Weather alerts in Shelby County, Alabama, 2024
146 weather alerts in 2024, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Shelby County and its neighbors
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Alerts
- 146
- Warnings
- 26
- Watches
- 17
- Advisories
- 54
- Busiest month
- July22 alerts
- Busiest day
- May 9, 20248 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado reports fell inside a warning.
Shelby County, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 2 | 0% | |||
| Severe thunderstorm warnings | 12 | 10 | 17% | 25 | 92% | 20 min |
| Flash flood warnings | 3 | 3 | 0% | 2 | 100% | 61 min |
Each office's whole area, 2024
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Birmingham, AL: tornado warnings | 14 | 10 | 29% | 38 | 61% | 10 min |
| NWS Birmingham, AL: severe thunderstorm warnings | 168 | 120 | 29% | 391 | 72% | 23 min |
| NWS Birmingham, AL: flash flood warnings | 25 | 11 | 56% | 34 | 79% | 76 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 4, 2:34 AM CST | Freezing Fog Advisory | BMX | 5 hr |
| Jan 7, 1:35 PM CST | Wind Advisory | BMX | 58 hr |
| Jan 9, 2:26 AM CST | Areal Flood Advisory | BMX | 3 hr |
| Jan 9, 4:03 AM CST | Areal Flood Advisory | BMX | 3 hr |
| Jan 11, 1:05 AM CST | Wind Advisory | BMX | 47 hr |
| Jan 12, 11:09 AM CST | Special Weather Statement | BMX | 66 min |
| Jan 14, 4:42 AM CST | Winter Weather Advisory | BMX | 54 hr |
| Jan 15, 4:32 AM CST | Hard Freeze Warning | BMX | 54 hr |
| Jan 15, 7:32 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 16, 2:32 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 16, 3:50 AM CST | Wind Chill Advisory | BMX | 28 hr |
| Jan 17, 4:55 AM CST | Hard Freeze Warning | BMX | 27 hr |
| Jan 18, 3:51 AM CST | Hard Freeze Warning | BMX | 56 hr |
| Jan 19, 1:02 AM CST | Hard Freeze Warning | BMX | 57 hr |
| Jan 23, 2:31 AM CST | Flood Watch | BMX | 5 days |
| Jan 24, 6:42 PM CST | Areal Flood Advisory | BMX | 3 hr |
| Jan 25, 1:05 PM CST | Special Weather Statement | BMX | 40 min |
| Jan 27, 8:30 AM CST | Wind Advisory | BMX | 118 min |
| Feb 3, 10:10 PM CST | Wind Advisory | BMX | 23 hr |
| Feb 11, 9:57 AM CST | Flood Watch | BMX | 30 hr |
| Feb 11, 4:38 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 12, 8:39 AM CST | River Flood Warning | BMX | 16 hr |
| Feb 23, 2:12 AM CST | Special Weather Statement | BMX | 48 min |
| Feb 24, 2:51 AM CST | Red Flag Warning | BMX | 16 hr |
| Feb 27, 1:25 AM CST | Wind Advisory | BMX | 43 hr |
| Feb 28, 12:12 PM CST | Special Weather Statement | BMX | 63 min |
| Mar 1, 9:51 PM CST | Dense Fog Advisory | BMX | 10 hr |
| Mar 3, 4:39 AM CST | Dense Fog Advisory | BMX | 5 hr |
| Mar 7, 1:38 AM CST | Flood Watch | BMX | 50 hr |
| Mar 7, 5:48 AM CST | Dense Fog Advisory | BMX | 3 hr |
| Mar 10, 3:47 AM CDT | Freeze Warning | BMX | 29 hr |
| Mar 11, 12:26 AM CDT | Frost Advisory | BMX | 33 hr |
| Mar 15, 4:43 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 15, 7:45 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Mar 15, 7:47 AM CDT | Special Weather Statement | BMX | 58 min |
| Mar 15, 8:15 AM CDT | Severe Thunderstorm Warning | BMX | 60 min |
| Mar 17, 4:50 AM CDT | Freeze Watch | BMX | 9 hr |
| Mar 17, 1:40 PM CDT | Freeze Warning | BMX | 43 hr |
| Mar 19, 12:33 PM CDT | Frost Advisory | BMX | 19 hr |
| Mar 23, 12:16 PM CDT | Frost Advisory | BMX | 20 hr |
| Mar 24, 4:36 AM CDT | Wind Advisory | BMX | 53 hr |
| Mar 27, 2:00 AM CDT | Dense Fog Advisory | BMX | 6 hr |
| Mar 28, 12:38 PM CDT | Frost Advisory | BMX | 19 hr |
| Apr 2, 5:53 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 2, 6:57 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 2, 8:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 4, 4:10 AM CDT | Red Flag Warning | BMX | 15 hr |
| Apr 9, 4:47 AM CDT | Flood Watch | BMX | 44 hr |
| Apr 9, 8:58 AM CDT | River Flood Warning | BMX | 12 hr |
| Apr 10, 1:18 PM CDT | Wind Advisory | BMX | 12 hr |
| Apr 19, 4:54 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 9, 3:02 AM CDT | Tornado Watch | SPC | 7 hr |
| May 9, 7:48 AM CDT | Mesoscale Discussion | SPC | 117 min |
| May 9, 8:51 AM CDT | Tornado Watch | SPC | 6 hr |
| May 9, 8:57 AM CDT | Severe Thunderstorm Warning | BMX | 63 min |
| May 9, 4:39 PM CDT | Mesoscale Discussion | SPC | 96 min |
| May 9, 4:57 PM CDT | Special Weather Statement | BMX | 48 min |
| May 9, 4:58 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 9, 5:35 PM CDT | Severe Thunderstorm Warning | BMX | 55 min |
| May 9, 7:15 PM CDT | Areal Flood Advisory | BMX | 4 hr |
| May 9, 7:39 PM CDT | Flash Flood Warning | BMX | 4 hr |
| May 9, 8:00 PM CDT | Severe Thunderstorm Warning | BMX | 75 min |
| May 24, 12:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| May 24, 3:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 27, 4:12 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 27, 5:20 AM CDT | Severe Thunderstorm Warning | BMX | 40 min |
| May 27, 5:39 AM CDT | Severe Thunderstorm Warning | BMX | 51 min |
| Jun 4, 7:14 PM CDT | Special Weather Statement | BMX | 31 min |
| Jun 4, 7:23 PM CDT | Special Weather Statement | BMX | 37 min |
| Jun 5, 6:58 PM CDT | Severe Thunderstorm Warning | BMX | 62 min |
| Jun 5, 8:00 PM CDT | Severe Thunderstorm Warning | BMX | 47 min |
| Jun 9, 3:47 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 9, 6:02 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 9, 7:19 PM CDT | Mesoscale Discussion | SPC | 86 min |
| Jun 29, 1:05 PM CDT | Heat Advisory | BMX | 30 hr |
| Jun 30, 3:59 PM CDT | Special Weather Statement | BMX | 31 min |
| Jun 30, 4:31 PM CDT | Special Weather Statement | BMX | 29 min |
| Jul 2, 1:13 AM CDT | Heat Advisory | BMX | 4 days |
| Jul 5, 1:35 PM CDT | Heat Advisory | BMX | 3 days |
| Jul 5, 6:16 PM CDT | Special Weather Statement | BMX | 29 min |
| Jul 5, 6:52 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 9, 2:17 AM CDT | Heat Advisory | BMX | 17 hr |
| Jul 15, 1:17 PM CDT | Heat Advisory | BMX | 32 hr |
| Jul 15, 3:53 PM CDT | Special Weather Statement | BMX | 52 min |
| Jul 15, 4:45 PM CDT | Special Weather Statement | BMX | 75 min |
| Jul 16, 3:27 PM CDT | Special Weather Statement | BMX | 33 min |
| Jul 16, 3:48 PM CDT | Special Weather Statement | BMX | 27 min |
| Jul 17, 1:44 PM CDT | Special Weather Statement | BMX | 46 min |
| Jul 18, 5:28 PM CDT | Special Weather Statement | BMX | 32 min |
| Jul 21, 12:24 PM CDT | Special Weather Statement | BMX | 36 min |
| Jul 21, 12:58 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 23, 5:11 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 27, 4:32 PM CDT | Areal Flood Advisory | BMX | 118 min |
| Jul 28, 2:40 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 28, 3:32 PM CDT | Areal Flood Advisory | BMX | 3 hr |
| Jul 28, 4:44 PM CDT | Flash Flood Warning | BMX | 3 hr |
| Jul 29, 2:25 AM CDT | Heat Advisory | BMX | 5 days |
| Jul 29, 4:57 PM CDT | Special Weather Statement | BMX | 33 min |
| Jul 30, 8:02 PM CDT | Special Weather Statement | BMX | 28 min |
| Aug 2, 5:20 PM CDT | Severe Thunderstorm Warning | BMX | 40 min |
| Aug 2, 5:42 PM CDT | Special Weather Statement | BMX | 33 min |
| Aug 2, 5:51 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 6, 3:18 PM CDT | Heat Advisory | BMX | 30 hr |
| Aug 15, 2:15 PM CDT | Heat Advisory | BMX | 55 hr |
| Aug 16, 6:03 PM CDT | Special Weather Statement | BMX | 27 min |
| Aug 16, 6:31 PM CDT | Special Weather Statement | BMX | 29 min |
| Aug 17, 3:46 PM CDT | Special Weather Statement | BMX | 29 min |
| Aug 17, 4:10 PM CDT | Severe Thunderstorm Warning | BMX | 33 min |
| Aug 17, 4:29 PM CDT | Severe Thunderstorm Warning | BMX | 46 min |
| Aug 18, 12:54 AM CDT | Heat Advisory | BMX | 20 hr |
| Aug 18, 2:21 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Aug 18, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 18, 7:42 PM CDT | Special Weather Statement | BMX | 48 min |
| Aug 29, 1:37 AM CDT | Heat Advisory | BMX | 19 hr |
| Aug 29, 4:33 PM CDT | Special Weather Statement | BMX | 42 min |
| Aug 31, 1:40 PM CDT | Special Weather Statement | BMX | 35 min |
| Sep 11, 1:09 PM CDT | Wind Advisory | BMX | 35 hr |
| Sep 11, 10:10 PM CDT | Flood Watch | BMX | 3 days |
| Sep 12, 2:40 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 12, 4:35 PM CDT | Tornado Watch | SPC | 4 hr |
| Sep 13, 12:21 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 14, 4:55 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Sep 14, 5:20 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Sep 14, 6:14 AM CDT | Flash Flood Warning | BMX | 3 hr |
| Sep 14, 6:31 AM CDT | Areal Flood Advisory | BMX | 70 min |
| Sep 14, 6:33 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Sep 14, 7:31 AM CDT | Areal Flood Advisory | BMX | 3 hr |
| Sep 24, 9:59 PM CDT | Flood Watch | BMX | 57 hr |
| Sep 25, 3:49 PM CDT | Wind Advisory | BMX | 54 hr |
| Sep 30, 3:16 AM CDT | Dense Fog Advisory | BMX | 7 hr |
| Oct 16, 2:14 AM CDT | Frost Advisory | BMX | 30 hr |
| Oct 17, 12:43 PM CDT | Frost Advisory | BMX | 19 hr |
| Nov 2, 3:51 AM CDT | Dense Fog Advisory | BMX | 5 hr |
| Nov 21, 12:05 PM CST | Wind Advisory | BMX | 6 hr |
| Nov 21, 12:32 PM CST | Frost Advisory | BMX | 19 hr |
| Nov 22, 1:39 AM CST | Freeze Warning | BMX | 30 hr |
| Nov 23, 12:08 PM CST | Frost Advisory | BMX | 20 hr |
| Nov 28, 2:56 AM CST | Special Weather Statement | BMX | 34 min |
| Dec 10, 9:54 AM CST | Mesoscale Discussion | SPC | 96 min |
| Dec 10, 10:14 AM CST | Areal Flood Advisory | BMX | 3 hr |
| Dec 17, 8:22 PM CST | Dense Fog Advisory | BMX | 12 hr |
| Dec 28, 6:59 PM CST | Mesoscale Discussion | SPC | 91 min |
| Dec 28, 8:09 PM CST | Tornado Watch | SPC | 7 hr |
| Dec 28, 9:43 PM CST | Mesoscale Discussion | SPC | 92 min |
| Dec 28, 11:17 PM CST | Severe Thunderstorm Warning | BMX | 63 min |
| Dec 28, 11:34 PM CST | Mesoscale Discussion | SPC | 116 min |
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 | 12 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 21 |
| Special Weather Statement | 28 |
| Flooding | |
| Flash Flood Warning | 3 |
| River Flood Warning | 2 |
| Flood Watch | 6 |
| Areal Flood Advisory | 16 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 10 |
| Cold | |
| Freeze Warning | 3 |
| Hard Freeze Warning | 4 |
| Freeze Watch | 1 |
| Frost Advisory | 8 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20232025
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.