Weather alerts in Dallas County, Alabama, 2018

156 weather alerts in 2018, 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 2018. Tap one for its archive.

Alerts: 156
Warnings: 26
Watches: 15
Advisories: 66
Busiest month: May23 alerts
Busiest day: April 14, 20188 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Dallas County in 2018 had a tornado report inside them.

Dallas County, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	2	1	50%	0
Severe thunderstorm warnings	6	3	50%	1	100%	14 min
Flash flood warnings	5	3	40%	3	100%	188 min

Each office's whole area, 2018

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Birmingham, AL: tornado warnings	24	6	75%	29	45%	18 min
NWS Birmingham, AL: severe thunderstorm warnings	119	75	37%	363	54%	24 min
NWS Birmingham, AL: flash flood warnings	40	22	45%	61	92%	97 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 9, 9:21 PM CST	Dense Fog Advisory	BMX	8 hr
Jan 12, 2:57 AM CST	Wind Advisory	BMX	11 hr
Jan 15, 3:40 AM CST	Hard Freeze Watch	BMX	32 hr
Jan 15, 1:45 PM CST	Winter Weather Advisory	BMX	42 hr
Jan 16, 2:36 AM CST	Wind Chill Advisory	BMX	33 hr
Jan 16, 11:12 AM CST	Hard Freeze Warning	BMX	46 hr
Jan 22, 12:37 PM CST	Special Weather Statement	BMX	38 min
Jan 22, 1:10 PM CST	Special Weather Statement	BMX	65 min
Jan 22, 1:12 PM CST	Severe Thunderstorm Warning	BMX	33 min
Feb 7, 6:23 AM CST	Severe Thunderstorm Warning	BMX	37 min
Feb 9, 1:45 PM CST	Flood Watch	BMX	52 hr
Feb 10, 7:02 AM CST	Dense Fog Advisory	BMX	118 min
Feb 10, 8:29 PM CST	Mesoscale Discussion	SPC	3 hr
Feb 13, 9:03 AM CST	River Flood Warning	MOB	3 days
Feb 22, 5:42 AM CST	Dense Fog Advisory	BMX	3 hr
Mar 1, 2:47 AM CST	Wind Advisory	BMX	14 hr
Mar 7, 3:48 AM CST	Freeze Watch	BMX	24 hr
Mar 7, 1:38 PM CST	Frost Advisory	BMX	18 hr
Mar 8, 4:11 AM CST	Freeze Warning	BMX	28 hr
Mar 12, 3:19 AM CDT	Frost Advisory	BMX	30 hr
Mar 12, 3:19 AM CDT	Freeze Watch	BMX	24 hr
Mar 12, 3:19 AM CDT	Wind Advisory	BMX	16 hr
Mar 13, 3:33 AM CDT	Frost Advisory	BMX	30 hr
Mar 13, 3:33 AM CDT	Freeze Watch	BMX	24 hr
Mar 14, 3:23 AM CDT	Freeze Warning	BMX	30 hr
Mar 19, 5:07 AM CDT	Dense Fog Advisory	BMX	4 hr
Mar 20, 3:06 AM CDT	Wind Advisory	BMX	19 hr
Mar 21, 2:54 AM CDT	Frost Advisory	BMX	29 hr
Mar 21, 12:57 PM CDT	Wind Advisory	BMX	6 hr
Apr 3, 11:09 PM CDT	Mesoscale Discussion	SPC	66 min
Apr 4, 12:42 AM CDT	Special Weather Statement	BMX	63 min
Apr 13, 4:40 PM CDT	Flash Flood Watch	BMX	36 hr
Apr 14, 9:40 AM CDT	Mesoscale Discussion	SPC	95 min
Apr 14, 10:36 AM CDT	Tornado Watch	SPC	8 hr
Apr 14, 12:41 PM CDT	Mesoscale Discussion	SPC	94 min
Apr 14, 1:39 PM CDT	Severe Thunderstorm Warning	BMX	41 min
Apr 14, 2:08 PM CDT	Special Weather Statement	BMX	67 min
Apr 14, 2:56 PM CDT	Mesoscale Discussion	SPC	94 min
Apr 14, 5:33 PM CDT	Flash Flood Warning	BMX	4 hr
Apr 14, 6:55 PM CDT	Tornado Watch	SPC	6 hr
Apr 14, 8:50 PM CDT	Special Weather Statement	BMX	25 min
Apr 14, 9:13 PM CDT	Special Weather Statement	BMX	47 min
Apr 14, 9:22 PM CDT	Flash Flood Warning	BMX	6 hr
Apr 14, 9:27 PM CDT	Mesoscale Discussion	SPC	93 min
Apr 15, 8:52 AM CDT	River Flood Warning	BMX	36 hr
Apr 22, 3:58 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 22, 8:01 PM CDT	Areal Flood Advisory	BMX	119 min
Apr 23, 5:06 AM CDT	Dense Fog Advisory	BMX	4 hr
May 16, 6:12 PM CDT	Areal Flood Advisory	BMX	3 hr
May 17, 1:16 PM CDT	Mesoscale Discussion	SPC	2 hr
May 24, 3:48 AM CDT	Dense Fog Advisory	BMX	5 hr
May 24, 2:11 PM CDT	Special Weather Statement	BMX	34 min
May 24, 2:41 PM CDT	Areal Flood Advisory	BMX	2 hr
May 24, 3:01 PM CDT	Special Weather Statement	BMX	29 min
May 25, 2:53 AM CDT	Dense Fog Advisory	BMX	6 hr
May 25, 2:43 PM CDT	Areal Flood Advisory	BMX	2 hr
May 26, 7:21 PM CDT	Special Weather Statement	BMX	39 min
May 28, 2:38 AM CDT	Wind Advisory	BMX	35 hr
May 28, 2:45 AM CDT	Flash Flood Watch	BMX	40 hr
May 28, 4:27 PM CDT	Special Weather Statement	BMX	33 min
May 29, 7:01 AM CDT	Areal Flood Advisory	BMX	3 hr
May 29, 7:40 PM CDT	Areal Flood Advisory	BMX	2 hr
May 29, 8:55 PM CDT	Areal Flood Advisory	BMX	2 hr
May 29, 9:46 PM CDT	Areal Flood Advisory	BMX	119 min
May 29, 11:41 PM CDT	Areal Flood Advisory	BMX	6 hr
May 30, 1:10 AM CDT	Flash Flood Warning	BMX	6 hr
May 30, 5:18 AM CDT	Flash Flood Watch	BMX	14 hr
May 30, 7:51 AM CDT	Flash Flood Warning	BMX	6 hr
May 30, 1:41 PM CDT	Flash Flood Warning	BMX	109 min
May 30, 10:51 PM CDT	River Flood Warning	MOB	35 hr
May 31, 2:22 PM CDT	River Flood Warning	BMX	30 hr
Jun 3, 2:24 PM CDT	Mesoscale Discussion	SPC	66 min
Jun 9, 7:05 PM CDT	Special Weather Statement	BMX	25 min
Jun 9, 7:32 PM CDT	Special Weather Statement	BMX	28 min
Jun 16, 5:02 PM CDT	Special Weather Statement	BMX	28 min
Jun 18, 5:10 AM CDT	Dense Fog Advisory	BMX	3 hr
Jun 25, 4:40 AM CDT	Heat Advisory	BMX	14 hr
Jun 25, 7:41 PM CDT	Heat Advisory	BMX	24 hr
Jun 25, 9:01 PM CDT	Special Weather Statement	BMX	44 min
Jun 26, 3:54 PM CDT	Heat Advisory	BMX	27 hr
Jun 26, 4:53 PM CDT	Special Weather Statement	BMX	37 min
Jun 27, 7:56 PM CDT	Heat Advisory	BMX	23 hr
Jun 28, 1:07 PM CDT	Mesoscale Discussion	SPC	113 min
Jun 28, 4:02 PM CDT	Severe Thunderstorm Warning	BMX	58 min
Jun 28, 4:11 PM CDT	Special Weather Statement	BMX	34 min
Jun 28, 4:27 PM CDT	Severe Thunderstorm Warning	BMX	33 min
Jun 28, 4:34 PM CDT	Mesoscale Discussion	SPC	86 min
Jun 28, 4:56 PM CDT	Severe Thunderstorm Warning	BMX	34 min
Jun 28, 4:59 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 30, 2:56 PM CDT	Special Weather Statement	BMX	34 min
Jul 2, 6:10 PM CDT	Areal Flood Advisory	BMX	2 hr
Jul 7, 5:09 PM CDT	Special Weather Statement	BMX	36 min
Jul 7, 5:34 PM CDT	Areal Flood Advisory	BMX	116 min
Jul 7, 5:41 PM CDT	Special Weather Statement	BMX	34 min
Jul 13, 3:56 AM CDT	Heat Advisory	BMX	15 hr
Jul 13, 5:50 PM CDT	Areal Flood Advisory	BMX	115 min
Jul 14, 3:02 AM CDT	Heat Advisory	BMX	16 hr
Jul 14, 4:09 PM CDT	Special Weather Statement	BMX	51 min
Jul 14, 5:01 PM CDT	Areal Flood Advisory	BMX	119 min
Jul 15, 6:17 PM CDT	Areal Flood Advisory	BMX	118 min
Jul 15, 7:14 PM CDT	Areal Flood Advisory	BMX	3 hr
Jul 16, 2:49 AM CDT	Heat Advisory	BMX	7 hr
Jul 16, 8:31 PM CDT	Areal Flood Advisory	BMX	119 min
Jul 19, 4:27 PM CDT	Heat Advisory	BMX	27 hr
Jul 21, 8:16 AM CDT	Special Weather Statement	BMX	44 min
Jul 31, 12:51 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 31, 1:33 PM CDT	Special Weather Statement	BMX	27 min
Jul 31, 1:43 PM CDT	Flash Flood Watch	BMX	37 hr
Jul 31, 2:51 PM CDT	Areal Flood Advisory	BMX	3 hr
Aug 1, 11:30 AM CDT	Areal Flood Advisory	BMX	2 hr
Aug 7, 3:18 AM CDT	Heat Advisory	BMX	16 hr
Aug 10, 1:06 PM CDT	Special Weather Statement	BMX	24 min
Aug 10, 1:07 PM CDT	Special Weather Statement	BMX	38 min
Aug 10, 1:34 PM CDT	Special Weather Statement	BMX	26 min
Aug 10, 1:58 PM CDT	Special Weather Statement	BMX	32 min
Aug 14, 4:31 PM CDT	Special Weather Statement	BMX	29 min
Aug 15, 1:21 AM CDT	Dense Fog Advisory	BMX	8 hr
Aug 19, 2:50 PM CDT	Special Weather Statement	BMX	25 min
Aug 31, 5:25 PM CDT	Special Weather Statement	BMX	35 min
Sep 4, 6:25 PM CDT	Special Weather Statement	BMX	35 min
Sep 10, 10:23 PM CDT	Areal Flood Advisory	BMX	2 hr
Sep 13, 6:12 PM CDT	Areal Flood Advisory	BMX	2 hr
Sep 24, 3:03 PM CDT	Special Weather Statement	BMX	27 min
Oct 16, 5:04 AM CDT	Dense Fog Advisory	BMX	4 hr
Oct 29, 6:47 AM CDT	Dense Fog Advisory	BMX	2 hr
Nov 1, 4:30 AM CDT	Mesoscale Discussion	SPC	2 hr
Nov 1, 5:27 AM CDT	Tornado Watch	SPC	7 hr
Nov 1, 7:50 AM CDT	Mesoscale Discussion	SPC	115 min
Nov 1, 8:45 AM CDT	Special Weather Statement	BMX	30 min
Nov 7, 10:34 AM CST	Mesoscale Discussion	SPC	56 min
Nov 7, 12:40 PM CST	Special Weather Statement	BMX	35 min
Nov 8, 11:43 PM CST	Dense Fog Advisory	BMX	10 hr
Nov 10, 8:52 AM CST	Frost Advisory	BMX	23 hr
Nov 12, 4:13 PM CST	Areal Flood Advisory	BMX	2 hr
Nov 12, 4:22 PM CST	Areal Flood Advisory	BMX	113 min
Nov 13, 3:05 PM CST	Freeze Watch	BMX	12 hr
Nov 14, 2:58 AM CST	Freeze Warning	BMX	54 hr
Nov 18, 2:39 AM CST	Dense Fog Advisory	BMX	5 hr
Nov 24, 7:22 PM CST	Dense Fog Advisory	BMX	15 hr
Dec 1, 2:57 PM CST	Tornado Warning	BMX	33 min
Dec 1, 3:07 PM CST	Mesoscale Discussion	SPC	113 min
Dec 1, 3:19 PM CST	Tornado Warning	BMX	41 min
Dec 8, 10:44 PM CST	Wind Advisory	BMX	3 hr
Dec 9, 8:53 AM CST	River Flood Warning	MOB	59 hr
Dec 11, 2:59 AM CST	Freezing Fog Advisory	BMX	7 hr
Dec 17, 2:33 AM CST	Dense Fog Advisory	BMX	7 hr
Dec 18, 12:42 AM CST	Dense Fog Advisory	BMX	9 hr
Dec 26, 1:54 PM CST	Wind Advisory	BMX	34 hr
Dec 26, 2:07 PM CST	Flash Flood Watch	BMX	45 hr
Dec 27, 1:28 PM CST	River Flood Warning	BMX	67 hr
Dec 27, 7:33 PM CST	River Flood Warning	BMX	6 days
Dec 27, 8:24 PM CST	River Flood Warning	MOB	13 days
Dec 28, 7:48 PM CST	River Flood Warning	BMX	4 days
Dec 28, 9:38 PM CST	Dense Fog Advisory	BMX	10 hr
Dec 30, 2:17 AM CST	Dense Fog Advisory	BMX	8 hr
Dec 30, 6:08 PM CST	Dense Fog Advisory	BMX	13 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	6
Tornado Warning	2
Severe Thunderstorm Watch	1
Tornado Watch	3
Mesoscale Discussion	16
Special Weather Statement	33
Flooding
Flash Flood Warning	5
River Flood Warning	9
Flash Flood Watch	5
Flood Watch	1
Areal Flood Advisory	22
Winter
Winter Weather Advisory	1
Heat
Heat Advisory	9
Cold
Freeze Warning	3
Hard Freeze Warning	1
Freeze Watch	4
Hard Freeze Watch	1
Frost Advisory	5
Wind Chill Advisory	1
Wind and dust
Wind Advisory	8
Fog and smoke
Dense Fog Advisory	19
Freezing Fog Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2017 2019

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.