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

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings2150%110%
Flash flood warnings220%0

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Birmingham, AL: tornado warnings592263%6373%14 min
NWS Birmingham, AL: severe thunderstorm warnings17010836%70857%21 min
NWS Birmingham, AL: flash flood warnings362919%14589%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.

IssuedProductOfficeLasted
Jan 2, 12:59 PM CSTMesoscale DiscussionSPC2 hr
Jan 2, 1:09 PM CSTAreal Flood AdvisoryBMX2 hr
Jan 3, 10:13 AM CSTRiver Flood WarningMOB3 days
Jan 4, 3:10 PM CSTWinter Storm WatchBMX24 hr
Jan 5, 3:07 PM CSTWinter Weather AdvisoryBMX42 hr
Jan 6, 4:15 PM CSTMesoscale DiscussionSPC4 hr
Jan 7, 11:55 AM CSTHard Freeze WarningBMX22 hr
Jan 13, 3:36 AM CSTDense Fog AdvisoryBMX5 hr
Jan 18, 1:48 AM CSTDense Fog AdvisoryBMX6 hr
Jan 19, 4:37 AM CSTDense Fog AdvisoryBMX5 hr
Jan 19, 3:10 PM CSTMesoscale DiscussionSPC2 hr
Jan 21, 3:00 AM CSTMesoscale DiscussionSPC90 min
Jan 21, 3:52 AM CSTSpecial Weather StatementBMX38 min
Jan 21, 3:56 AM CSTTornado WatchSPC8 hr
Jan 21, 6:51 PM CSTTornado Watch PDSSPC8 hr
Jan 21, 8:30 PM CSTMesoscale DiscussionSPC90 min
Jan 21, 9:57 PM CSTMesoscale DiscussionSPC93 min
Jan 21, 11:49 PM CSTMesoscale DiscussionSPC116 min
Jan 22, 9:06 AM CSTWind AdvisoryBMX33 hr
Jan 22, 11:57 AM CSTSevere Thunderstorm WarningBMX63 min
Feb 8, 1:29 AM CSTDense Fog AdvisoryBMX7 hr
Feb 19, 12:39 AM CSTDense Fog AdvisoryBMX8 hr
Feb 27, 10:25 PM CSTDense Fog AdvisoryBMX11 hr
Mar 1, 3:43 PM CSTSevere Thunderstorm WatchSPC4 hr
Mar 1, 5:54 PM CSTMesoscale DiscussionSPC2 hr
Mar 10, 3:51 AM CSTSpecial Weather StatementBMX54 min
Mar 13, 3:19 PM CDTFreeze WarningBMX43 hr
Mar 14, 2:40 AM CDTFreeze WarningBMX55 hr
Mar 25, 12:08 PM CDTMesoscale DiscussionSPC3 hr
Mar 30, 12:45 PM CDTSpecial Weather StatementBMX60 min
Mar 30, 1:44 PM CDTMesoscale DiscussionSPC61 min
Apr 3, 3:59 AM CDTMesoscale DiscussionSPC2 hr
Apr 3, 4:25 AM CDTSevere Thunderstorm WatchSPC7 hr
Apr 3, 5:09 AM CDTSpecial Weather StatementBMX66 min
Apr 4, 2:36 AM CDTDense Fog AdvisoryBMX6 hr
Apr 5, 1:37 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 5, 3:41 AM CDTMesoscale DiscussionSPC2 hr
Apr 5, 6:15 AM CDTMesoscale DiscussionSPC90 min
Apr 5, 6:54 AM CDTTornado WatchSPC8 hr
Apr 5, 9:00 AM CDTSevere Thunderstorm WarningBMX75 min
Apr 5, 4:37 PM CDTWind AdvisoryBMX26 hr
Apr 22, 6:40 PM CDTMesoscale DiscussionSPC65 min
Apr 26, 11:02 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 27, 1:36 AM CDTMesoscale DiscussionSPC114 min
Apr 29, 3:06 AM CDTWind AdvisoryBMX16 hr
Apr 29, 4:33 PM CDTWind AdvisoryBMX50 hr
Apr 30, 10:06 AM CDTMesoscale DiscussionSPC84 min
Apr 30, 10:36 AM CDTTornado WatchSPC8 hr
Apr 30, 3:12 PM CDTSpecial Weather StatementBMX63 min
May 1, 12:35 AM CDTSpecial Weather StatementBMX55 min
May 3, 3:19 PM CDTWind AdvisoryBMX30 hr
May 20, 6:11 PM CDTAreal Flood AdvisoryBMX2 hr
May 20, 7:51 PM CDTFlash Flood WarningBMX3 hr
May 20, 10:35 PM CDTFlash Flood WarningBMX6 hr
May 21, 4:05 PM CDTFlash Flood WatchBMX47 hr
Jun 11, 5:09 PM CDTSpecial Weather StatementBMX66 min
Jun 15, 3:04 PM CDTSpecial Weather StatementBMX56 min
Jun 21, 3:26 AM CDTFlash Flood WatchBMX64 hr
Jun 21, 3:15 PM CDTAreal Flood AdvisoryBMX4 hr
Jun 22, 2:57 AM CDTTornado WatchSPC10 hr
Jun 22, 11:50 AM CDTMesoscale DiscussionSPC85 min
Jun 22, 1:04 PM CDTTornado WatchSPC9 hr
Jun 22, 3:48 PM CDTMesoscale DiscussionSPC87 min
Jun 22, 4:19 PM CDTAreal Flood WarningBMX3 hr
Jun 22, 8:57 PM CDTMesoscale DiscussionSPC63 min
Jun 22, 11:34 PM CDTAreal Flood AdvisoryBMX6 hr
Jun 22, 11:37 PM CDTRiver Flood WarningMOB5 days
Jun 23, 2:22 PM CDTRiver Flood WarningBMX54 hr
Jun 23, 5:22 PM CDTAreal Flood WarningBMX3 hr
Jun 25, 7:27 AM CDTRiver Flood WarningBMX3 days
Jun 30, 3:48 PM CDTAreal Flood AdvisoryBMX117 min
Jul 1, 7:20 PM CDTSpecial Weather StatementBMX40 min
Jul 1, 8:09 PM CDTAreal Flood AdvisoryBMX2 hr
Jul 1, 10:16 PM CDTAreal Flood AdvisoryBMX119 min
Jul 7, 3:38 PM CDTSpecial Weather StatementBMX37 min
Jul 7, 4:17 PM CDTSpecial Weather StatementBMX43 min
Jul 21, 11:45 AM CDTHeat AdvisoryBMX7 hr
Jul 22, 3:00 AM CDTHeat AdvisoryBMX18 hr
Jul 23, 3:16 AM CDTHeat AdvisoryBMX18 hr
Jul 26, 12:29 PM CDTHeat AdvisoryBMX9 hr
Jul 26, 3:02 PM CDTAreal Flood AdvisoryBMX3 hr
Jul 26, 3:14 PM CDTSpecial Weather StatementBMX46 min
Jul 26, 3:51 PM CDTSpecial Weather StatementBMX39 min
Jul 27, 4:25 AM CDTHeat AdvisoryBMX15 hr
Aug 3, 2:23 PM CDTAreal Flood AdvisoryBMX3 hr
Aug 8, 9:54 AM CDTFlash Flood WatchBMX33 hr
Aug 10, 7:05 AM CDTDense Fog AdvisoryBMX115 min
Aug 10, 5:03 PM CDTAreal Flood AdvisoryBMX117 min
Aug 10, 5:47 PM CDTAreal Flood AdvisoryBMX118 min
Aug 11, 4:55 AM CDTDense Fog AdvisoryBMX3 hr
Aug 12, 4:49 AM CDTDense Fog AdvisoryBMX4 hr
Aug 15, 3:15 PM CDTSpecial Weather StatementBMX30 min
Aug 31, 11:13 AM CDTTornado WatchSPC11 hr
Aug 31, 2:49 PM CDTWind AdvisoryBMX27 hr
Sep 10, 4:07 PM CDTWind AdvisoryBMX36 hr
Sep 17, 3:19 AM CDTDense Fog AdvisoryBMX6 hr
Sep 18, 12:31 AM CDTDense Fog AdvisoryBMX8 hr
Oct 6, 4:14 PM CDTTropical Storm WatchBMX42 hr
Oct 7, 2:51 AM CDTFlash Flood WatchBMX35 hr
Oct 7, 4:27 AM CDTTropical Storm WarningBMX30 hr
Oct 7, 12:25 PM CDTWind AdvisoryBMX31 hr
Oct 8, 1:41 AM CDTTornado WatchSPC8 hr
Oct 8, 4:47 AM CDTAreal Flood AdvisoryBMX6 hr
Oct 8, 9:04 AM CDTMesoscale DiscussionSPC86 min
Oct 9, 9:59 PM CDTDense Fog AdvisoryBMX11 hr
Oct 10, 10:14 PM CDTDense Fog AdvisoryBMX11 hr
Oct 29, 3:07 AM CDTFrost AdvisoryBMX29 hr
Nov 5, 3:36 AM CSTDense Fog AdvisoryBMX5 hr
Nov 6, 8:26 PM CSTDense Fog AdvisoryBMX13 hr
Nov 9, 10:06 PM CSTDense Fog AdvisoryBMX9 hr
Nov 13, 3:28 AM CSTDense Fog AdvisoryBMX5 hr
Nov 18, 3:23 PM CSTFreeze WatchBMX11 hr
Nov 18, 7:50 PM CSTSpecial Weather StatementBMX55 min
Nov 19, 2:45 AM CSTFreeze WarningBMX29 hr
Nov 29, 9:27 PM CSTDense Fog AdvisoryBMX12 hr
Nov 30, 6:07 PM CSTDense Fog AdvisoryBMX15 hr
Dec 1, 3:00 PM CSTDense Fog AdvisoryBMX18 hr
Dec 2, 2:24 PM CSTDense Fog AdvisoryBMX19 hr
Dec 3, 11:39 PM CSTDense Fog AdvisoryBMX6 hr
Dec 7, 3:34 AM CSTWinter Weather AdvisoryBMX51 hr
Dec 8, 2:13 AM CSTWinter Storm WarningBMX29 hr
Dec 17, 8:31 PM CSTDense Fog AdvisoryBMX12 hr
Dec 18, 5:48 PM CSTDense Fog AdvisoryBMX17 hr
Dec 19, 6:37 PM CSTDense Fog AdvisoryBMX11 hr
Dec 30, 2:54 AM CSTWinter Weather AdvisoryBMX34 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

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.