Weather alerts in Shelby County, Alabama, 2022

200 weather alerts in 2022, 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 2022. Tap one for its archive.

Alerts: 200
Warnings: 47
Watches: 24
Advisories: 59
Busiest month: March37 alerts
Busiest day: June 8, 202212 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

2 of 5 tornado warnings covering Shelby County in 2022 had a tornado report inside them; 2 of 5 tornado reports fell inside a warning, on average 29 minutes after it went out.

Shelby County, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	5	2	60%	5	40%	29 min
Severe thunderstorm warnings	16	12	25%	26	54%	23 min
Flash flood warnings	11	8	27%	10	90%	131 min

Each office's whole area, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Birmingham, AL: tornado warnings	67	33	51%	90	70%	16 min
NWS Birmingham, AL: severe thunderstorm warnings	210	134	36%	461	69%	24 min
NWS Birmingham, AL: flash flood warnings	50	31	38%	112	79%	107 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 1, 2:30 AM CST	Wind Advisory	BMX	26 hr
Jan 1, 3:52 PM CST	Tornado Watch	SPC	6 hr
Jan 1, 6:02 PM CST	Mesoscale Discussion	SPC	118 min
Jan 1, 9:11 PM CST	Mesoscale Discussion	SPC	64 min
Jan 1, 10:07 PM CST	Tornado Watch	SPC	6 hr
Jan 1, 11:19 PM CST	Mesoscale Discussion	SPC	116 min
Jan 2, 2:05 AM CST	Areal Flood Advisory	BMX	3 hr
Jan 2, 2:19 AM CST	Mesoscale Discussion	SPC	116 min
Jan 2, 2:54 AM CST	Winter Weather Advisory	BMX	25 hr
Jan 6, 4:32 AM CST	Dense Fog Advisory	BMX	3 hr
Jan 9, 12:38 PM CST	Special Weather Statement	BMX	52 min
Jan 15, 3:20 AM CST	Wind Advisory	BMX	27 hr
Jan 15, 12:01 PM CST	Winter Weather Advisory	BMX	33 hr
Feb 2, 2:19 AM CST	Flood Watch	BMX	50 hr
Feb 3, 11:40 AM CST	Tornado Watch	SPC	8 hr
Feb 3, 1:52 PM CST	Mesoscale Discussion	SPC	83 min
Feb 3, 3:12 PM CST	Tornado Warning	BMX	12 min
Feb 3, 3:50 PM CST	Mesoscale Discussion	SPC	85 min
Feb 16, 4:20 AM CST	Wind Advisory	BMX	50 hr
Feb 17, 3:47 PM CST	Mesoscale Discussion	SPC	118 min
Feb 17, 3:57 PM CST	Tornado Watch	SPC	5 hr
Feb 17, 5:28 PM CST	Severe Thunderstorm Warning	BMX	47 min
Feb 17, 5:39 PM CST	Tornado Warning	BMX	51 min
Feb 17, 6:06 PM CST	Mesoscale Discussion	SPC	84 min
Feb 17, 7:32 PM CST	Severe Thunderstorm Warning	BMX	43 min
Feb 17, 7:34 PM CST	Areal Flood Advisory	BMX	6 hr
Feb 17, 7:58 PM CST	Flash Flood Warning	BMX	6 hr
Feb 24, 2:10 AM CST	Dense Fog Advisory	BMX	8 hr
Mar 10, 3:00 PM CST	Winter Weather Advisory	BMX	38 hr
Mar 11, 3:12 AM CST	Freeze Warning	BMX	54 hr
Mar 11, 3:12 AM CST	Wind Advisory	BMX	39 hr
Mar 13, 1:18 AM CST	Freeze Warning	BMX	32 hr
Mar 16, 12:24 AM CDT	Areal Flood Advisory	BMX	3 hr
Mar 16, 7:31 AM CDT	Areal Flood Warning	BMX	6 hr
Mar 16, 2:49 PM CDT	Special Weather Statement	BMX	26 min
Mar 16, 3:29 PM CDT	Flash Flood Warning	BMX	2 hr
Mar 16, 8:28 PM CDT	Dense Fog Advisory	BMX	14 hr
Mar 18, 7:27 AM CDT	Special Weather Statement	BMX	33 min
Mar 18, 7:38 AM CDT	Flash Flood Warning	BMX	112 min
Mar 18, 9:26 AM CDT	Areal Flood Advisory	BMX	4 min
Mar 18, 9:39 AM CDT	Areal Flood Advisory	BMX	3 hr
Mar 21, 1:04 PM CDT	Flood Watch	BMX	39 hr
Mar 21, 1:13 PM CDT	Wind Advisory	BMX	38 hr
Mar 22, 4:08 PM CDT	Tornado Watch	SPC	7 hr
Mar 22, 5:57 PM CDT	Mesoscale Discussion	SPC	93 min
Mar 22, 8:52 PM CDT	Areal Flood Advisory	BMX	4 hr
Mar 22, 9:04 PM CDT	Tornado Warning	BMX	19 min
Mar 22, 9:27 PM CDT	Areal Flood Advisory	BMX	4 hr
Mar 22, 9:27 PM CDT	Severe Thunderstorm Warning	BMX	48 min
Mar 22, 9:40 PM CDT	Mesoscale Discussion	SPC	2 hr
Mar 22, 9:47 PM CDT	Flash Flood Warning	BMX	88 min
Mar 22, 9:58 PM CDT	Special Weather Statement	BMX	47 min
Mar 22, 10:02 PM CDT	River Flood Warning	BMX	23 hr
Mar 22, 11:45 PM CDT	Flash Flood Warning	BMX	4 hr
Mar 23, 3:50 AM CDT	Areal Flood Warning	BMX	6 hr
Mar 23, 8:15 PM CDT	River Flood Warning	BMX	13 hr
Mar 26, 2:45 AM CDT	Frost Advisory	BMX	29 hr
Mar 26, 2:45 AM CDT	Wind Advisory	BMX	15 hr
Mar 29, 3:14 AM CDT	Wind Advisory	BMX	49 hr
Mar 30, 5:29 PM CDT	Tornado Watch	SPC	8 hr
Mar 30, 10:20 PM CDT	Mesoscale Discussion	SPC	85 min
Mar 30, 10:22 PM CDT	Tornado Warning Tornado observed	BMX	23 min
Mar 30, 11:39 PM CDT	Severe Thunderstorm Warning	BMX	48 min
Mar 31, 12:01 AM CDT	Tornado Warning	BMX	29 min
Mar 31, 12:23 AM CDT	Areal Flood Advisory	BMX	3 hr
Apr 5, 9:29 AM CDT	Areal Flood Advisory	BMX	2 hr
Apr 6, 2:43 AM CDT	Dense Fog Advisory	BMX	6 hr
Apr 6, 11:28 AM CDT	Mesoscale Discussion	SPC	3 hr
Apr 6, 12:30 PM CDT	Special Weather Statement	BMX	45 min
Apr 6, 12:55 PM CDT	Areal Flood Advisory	BMX	3 hr
Apr 6, 1:09 PM CDT	Special Weather Statement	BMX	51 min
Apr 6, 1:11 PM CDT	Severe Thunderstorm Watch	SPC	10 hr
Apr 6, 2:58 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 6, 5:06 PM CDT	Mesoscale Discussion	SPC	114 min
Apr 6, 7:41 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 8, 3:47 AM CDT	Frost Advisory	BMX	24 hr
Apr 13, 9:50 PM CDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 16, 11:34 PM CDT	Dense Fog Advisory	BMX	8 hr
May 1, 5:57 PM CDT	Special Weather Statement	BMX	33 min
May 1, 6:30 PM CDT	Special Weather Statement	BMX	30 min
May 2, 3:44 AM CDT	Dense Fog Advisory	BMX	5 hr
May 6, 1:02 PM CDT	Wind Advisory	BMX	6 hr
May 14, 6:54 PM CDT	Special Weather Statement	BMX	36 min
May 15, 3:52 PM CDT	Special Weather Statement	BMX	38 min
May 21, 5:58 PM CDT	Special Weather Statement	BMX	32 min
May 21, 6:10 PM CDT	Severe Thunderstorm Warning	BMX	35 min
May 24, 12:42 PM CDT	Mesoscale Discussion	SPC	2 hr
May 24, 3:24 PM CDT	Special Weather Statement	BMX	36 min
May 24, 3:28 PM CDT	Mesoscale Discussion	SPC	92 min
May 24, 4:30 PM CDT	Special Weather Statement	BMX	30 min
May 26, 10:36 AM CDT	Mesoscale Discussion	SPC	114 min
May 26, 2:38 PM CDT	Areal Flood Advisory	BMX	112 min
Jun 8, 2:34 AM CDT	Flash Flood Warning	BMX	5 hr
Jun 8, 2:56 AM CDT	Special Weather Statement	BMX	34 min
Jun 8, 3:01 AM CDT	Areal Flood Advisory	BMX	119 min
Jun 8, 4:42 AM CDT	Flash Flood Warning	BMX	3 hr
Jun 8, 5:49 AM CDT	Flood Watch	BMX	19 hr
Jun 8, 7:18 AM CDT	Flash Flood Warning	BMX	3 hr
Jun 8, 7:46 AM CDT	Areal Flood Warning	BMX	17 hr
Jun 8, 12:55 PM CDT	River Flood Warning	BMX	8 hr
Jun 8, 2:12 PM CDT	Special Weather Statement	BMX	48 min
Jun 8, 2:32 PM CDT	Severe Thunderstorm Warning	BMX	43 min
Jun 8, 5:12 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 8, 5:43 PM CDT	Severe Thunderstorm Watch	SPC	3 hr
Jun 8, 7:42 PM CDT	Special Weather Statement	BMX	63 min
Jun 8, 7:54 PM CDT	Mesoscale Discussion	SPC	96 min
Jun 8, 8:08 PM CDT	Flash Flood Warning	BMX	3 hr
Jun 12, 1:37 PM CDT	Heat Advisory	BMX	6 days
Jun 15, 4:53 PM CDT	Mesoscale Discussion	SPC	3 hr
Jun 15, 9:42 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 15, 9:46 PM CDT	Special Weather Statement	BMX	44 min
Jun 15, 10:32 PM CDT	Special Weather Statement	BMX	43 min
Jun 17, 3:30 PM CDT	Mesoscale Discussion	SPC	60 min
Jun 17, 4:22 PM CDT	Severe Thunderstorm Warning	BMX	38 min
Jun 17, 4:45 PM CDT	Severe Thunderstorm Warning	BMX	60 min
Jun 17, 4:53 PM CDT	Severe Thunderstorm Warning	BMX	21 min
Jun 17, 5:38 PM CDT	Special Weather Statement	BMX	37 min
Jun 22, 2:25 AM CDT	Heat Advisory	BMX	16 hr
Jun 23, 12:46 PM CDT	Heat Advisory	BMX	6 hr
Jun 25, 3:01 AM CDT	Heat Advisory	BMX	18 hr
Jun 25, 3:44 PM CDT	Mesoscale Discussion	SPC	61 min
Jun 25, 4:10 PM CDT	Special Weather Statement	BMX	35 min
Jun 26, 9:18 PM CDT	Special Weather Statement	BMX	27 min
Jun 27, 4:42 PM CDT	Areal Flood Advisory	BMX	2 hr
Jul 4, 3:11 PM CDT	Heat Advisory	BMX	5 days
Jul 5, 6:06 PM CDT	Special Weather Statement	BMX	24 min
Jul 9, 2:48 PM CDT	Mesoscale Discussion	SPC	87 min
Jul 9, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 9, 4:28 PM CDT	Severe Thunderstorm Warning	BMX	32 min
Jul 9, 5:35 PM CDT	Mesoscale Discussion	SPC	115 min
Jul 9, 5:41 PM CDT	Areal Flood Advisory	BMX	2 hr
Jul 9, 6:12 PM CDT	Special Weather Statement	BMX	33 min
Jul 9, 6:21 PM CDT	Severe Thunderstorm Warning	BMX	39 min
Jul 9, 6:46 PM CDT	Areal Flood Advisory	BMX	16 min
Jul 9, 6:57 PM CDT	Special Weather Statement	BMX	48 min
Jul 9, 7:02 PM CDT	Flash Flood Warning	BMX	103 min
Jul 9, 7:32 PM CDT	Mesoscale Discussion	SPC	118 min
Jul 9, 7:52 PM CDT	Areal Flood Advisory	BMX	113 min
Jul 13, 4:20 PM CDT	Special Weather Statement	BMX	25 min
Jul 13, 4:22 PM CDT	Special Weather Statement	BMX	23 min
Jul 13, 4:44 PM CDT	Special Weather Statement	BMX	46 min
Jul 13, 4:50 PM CDT	Severe Thunderstorm Warning	BMX	40 min
Jul 19, 11:47 AM CDT	Heat Advisory	BMX	55 hr
Jul 21, 3:20 PM CDT	Mesoscale Discussion	SPC	85 min
Jul 21, 3:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 21, 5:20 PM CDT	Severe Thunderstorm Warning	BMX	70 min
Jul 21, 6:24 PM CDT	Severe Thunderstorm Warning	BMX	66 min
Jul 21, 7:23 PM CDT	Mesoscale Discussion	SPC	97 min
Jul 30, 6:32 PM CDT	Areal Flood Advisory	BMX	3 hr
Aug 1, 4:29 PM CDT	Special Weather Statement	BMX	31 min
Aug 6, 1:03 PM CDT	Special Weather Statement	BMX	42 min
Aug 7, 4:27 PM CDT	Special Weather Statement	BMX	33 min
Aug 11, 5:28 PM CDT	Areal Flood Advisory	BMX	2 hr
Aug 15, 3:50 PM CDT	Mesoscale Discussion	SPC	115 min
Aug 15, 4:44 PM CDT	Special Weather Statement	BMX	46 min
Aug 15, 4:55 PM CDT	Severe Thunderstorm Warning	BMX	50 min
Aug 15, 5:41 PM CDT	Special Weather Statement	BMX	34 min
Aug 15, 7:24 PM CDT	Special Weather Statement	BMX	36 min
Aug 16, 5:08 AM CDT	Dense Fog Advisory	BMX	4 hr
Aug 30, 12:58 PM CDT	Special Weather Statement	BMX	47 min
Aug 31, 1:06 AM CDT	Dense Fog Advisory	BMX	8 hr
Sep 4, 5:31 PM CDT	Flood Watch	BMX	25 hr
Sep 4, 6:58 PM CDT	Areal Flood Advisory	BMX	6 hr
Sep 4, 8:13 PM CDT	Areal Flood Advisory	BMX	5 hr
Sep 26, 3:18 PM CDT	Fire Weather Watch	BMX	23 hr
Sep 27, 2:12 PM CDT	Red Flag Warning	BMX	5 hr
Sep 27, 2:12 PM CDT	Red Flag Warning	BMX	29 hr
Oct 12, 7:42 AM CDT	Mesoscale Discussion	SPC	2 hr
Oct 13, 1:40 AM CDT	Special Weather Statement	BMX	50 min
Oct 17, 3:04 AM CDT	Freeze Watch	BMX	23 hr
Oct 17, 1:13 PM CDT	Freeze Watch	BMX	37 hr
Oct 18, 2:16 AM CDT	Freeze Warning	BMX	31 hr
Oct 19, 2:23 AM CDT	Freeze Warning	BMX	31 hr
Oct 25, 1:18 AM CDT	Wind Advisory	BMX	19 hr
Oct 25, 1:42 PM CDT	Tornado Watch	SPC	3 hr
Oct 25, 3:23 PM CDT	Mesoscale Discussion	SPC	2 hr
Oct 31, 3:53 AM CDT	Dense Fog Advisory	BMX	5 hr
Oct 31, 9:28 PM CDT	Dense Fog Advisory	BMX	12 hr
Nov 12, 2:27 AM CST	Freeze Warning	BMX	24 hr
Nov 13, 3:19 AM CST	Freeze Warning	BMX	30 hr
Nov 25, 9:07 PM CST	Dense Fog Advisory	BMX	10 hr
Nov 26, 1:38 AM CST	Wind Advisory	BMX	31 hr
Nov 29, 5:04 PM CST	Flood Watch	BMX	13 hr
Nov 29, 10:52 PM CST	Tornado Watch	SPC	7 hr
Nov 29, 11:09 PM CST	Areal Flood Advisory	BMX	4 hr
Nov 29, 11:33 PM CST	Mesoscale Discussion	SPC	87 min
Nov 30, 12:42 AM CST	Flash Flood Warning	BMX	3 hr
Nov 30, 1:10 AM CST	Severe Thunderstorm Warning	BMX	50 min
Nov 30, 1:16 AM CST	Special Weather Statement	BMX	74 min
Nov 30, 2:14 AM CST	Areal Flood Advisory	BMX	3 hr
Nov 30, 2:15 AM CST	Mesoscale Discussion	SPC	2 hr
Dec 3, 6:28 PM CST	Dense Fog Advisory	BMX	14 hr
Dec 7, 11:39 PM CST	Dense Fog Advisory	BMX	9 hr
Dec 10, 10:02 PM CST	Dense Fog Advisory	BMX	11 hr
Dec 11, 11:37 PM CST	Dense Fog Advisory	BMX	9 hr
Dec 13, 11:59 AM CST	Flood Watch	BMX	36 hr
Dec 20, 2:26 AM CST	Wind Chill Watch	BMX	36 hr
Dec 20, 2:50 AM CST	Hard Freeze Watch	BMX	24 hr
Dec 21, 2:58 AM CST	Hard Freeze Warning	BMX	5 days
Dec 21, 2:09 PM CST	Wind Chill Advisory	BMX	70 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	16
Tornado Warning	5
Severe Thunderstorm Watch	5
Tornado Watch	8
Mesoscale Discussion	34
Special Weather Statement	36
Flooding
Areal Flood Warning	3
Flash Flood Warning	11
River Flood Warning	3
Flood Watch	6
Areal Flood Advisory	22
Winter
Winter Weather Advisory	3
Heat
Heat Advisory	6
Cold
Freeze Warning	6
Hard Freeze Warning	1
Freeze Watch	2
Hard Freeze Watch	1
Wind Chill Watch	1
Frost Advisory	2
Wind Chill Advisory	1
Wind and dust
Wind Advisory	10
Fire
Red Flag Warning	2
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	15

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2021 2023

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.