Alert archive / Alabama / Chilton County

Weather alerts in Chilton County, Alabama, 2019

116 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Chilton County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts
116
Warnings
15
Watches
13
Advisories
36
Busiest month
April16 alerts
Busiest day
April 14, 20196 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 3 tornado warnings covering Chilton County in 2019 had a tornado report inside them; 2 of 2 tornado reports fell inside a warning, on average 17 minutes after it went out.

Chilton County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3233%2100%17 min
Severe thunderstorm warnings6517%1354%15 min
Flash flood warnings00

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Birmingham, AL: tornado warnings663350%9975%19 min
NWS Birmingham, AL: severe thunderstorm warnings16411132%52758%22 min
NWS Birmingham, AL: flash flood warnings6350%9100%46 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 17, 9:37 PM CSTDense Fog AdvisoryBMX12 hr
Jan 19, 3:25 AM CSTWind AdvisoryBMX33 hr
Jan 19, 9:43 AM CSTTornado WatchSPC7 hr
Jan 19, 11:37 AM CSTMesoscale DiscussionSPC83 min
Jan 23, 4:19 AM CSTWind AdvisoryBMX16 hr
Jan 23, 4:33 PM CSTAreal Flood AdvisoryBMX3 hr
Jan 27, 3:14 PM CSTWinter Storm WatchBMX13 hr
Jan 28, 3:52 AM CSTWinter Weather AdvisoryBMX29 hr
Feb 3, 10:34 PM CSTDense Fog AdvisoryBMX11 hr
Feb 5, 7:36 AM CSTDense Fog AdvisoryBMX2 hr
Feb 12, 9:38 AM CSTMesoscale DiscussionSPC2 hr
Feb 19, 12:31 PM CSTSpecial Weather StatementBMX29 min
Feb 20, 10:24 PM CSTDense Fog AdvisoryBMX11 hr
Feb 21, 10:10 AM CSTRiver Flood WarningBMX21 days
Feb 21, 5:40 PM CSTMesoscale DiscussionSPC2 hr
Feb 21, 6:24 PM CSTSpecial Weather StatementBMX36 min
Feb 21, 7:48 PM CSTRiver Flood WarningBMX15 days
Feb 23, 3:01 PM CSTTornado WatchSPC6 hr
Mar 3, 9:59 AM CSTMesoscale DiscussionSPC2 hr
Mar 3, 11:03 AM CSTTornado WatchSPC7 hr
Mar 3, 12:24 PM CSTAreal Flood AdvisoryBMX4 hr
Mar 4, 4:19 AM CSTFreeze WarningBMX3 days
Mar 14, 5:39 PM CDTMesoscale DiscussionSPC96 min
Mar 14, 6:41 PM CDTTornado WatchSPC5 hr
Mar 14, 6:50 PM CDTTornado Warning Tornado observedBMX40 min
Mar 14, 7:22 PM CDTTornado WarningBMX34 min
Mar 14, 8:57 PM CDTMesoscale DiscussionSPC2 hr
Mar 25, 4:43 PM CDTSevere Thunderstorm WatchSPC4 hr
Mar 25, 4:45 PM CDTSpecial Weather StatementBMX30 min
Mar 25, 4:48 PM CDTMesoscale DiscussionSPC117 min
Mar 25, 4:58 PM CDTSevere Thunderstorm WarningBMX47 min
Mar 25, 5:07 PM CDTSevere Thunderstorm WarningBMX38 min
Mar 31, 2:58 AM CDTSpecial Weather StatementBMX32 min
Apr 6, 7:09 PM CDTMesoscale DiscussionSPC96 min
Apr 6, 8:46 PM CDTSpecial Weather StatementBMX29 min
Apr 6, 8:55 PM CDTAreal Flood AdvisoryBMX2 hr
Apr 6, 10:40 PM CDTAreal Flood AdvisoryBMX2 hr
Apr 10, 12:38 AM CDTDense Fog AdvisoryBMX8 hr
Apr 13, 5:04 PM CDTMesoscale DiscussionSPC2 hr
Apr 13, 9:13 PM CDTMesoscale DiscussionSPC92 min
Apr 14, 12:15 AM CDTWind AdvisoryBMX21 hr
Apr 14, 1:04 AM CDTTornado WatchSPC9 hr
Apr 14, 4:20 AM CDTMesoscale DiscussionSPC115 min
Apr 14, 5:15 AM CDTSpecial Weather StatementBMX45 min
Apr 14, 5:36 AM CDTMesoscale DiscussionSPC54 min
Apr 18, 3:12 PM CDTMesoscale DiscussionSPC2 hr
Apr 18, 3:49 PM CDTTornado WatchSPC7 hr
Apr 18, 5:58 PM CDTMesoscale DiscussionSPC92 min
Apr 18, 6:53 PM CDTSevere Thunderstorm WarningBMX82 min
May 4, 11:58 AM CDTMesoscale DiscussionSPC77 min
May 9, 12:03 PM CDTMesoscale DiscussionSPC57 min
May 11, 3:27 PM CDTMesoscale DiscussionSPC63 min
Jun 6, 8:06 PM CDTMesoscale DiscussionSPC54 min
Jun 7, 11:58 AM CDTMesoscale DiscussionSPC2 hr
Jun 7, 12:17 PM CDTSpecial Weather StatementBMX43 min
Jun 9, 5:19 AM CDTAreal Flood AdvisoryBMX116 min
Jun 17, 5:53 PM CDTSpecial Weather StatementBMX37 min
Jun 19, 10:24 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 20, 2:34 AM CDTMesoscale DiscussionSPC56 min
Jun 20, 3:06 AM CDTSpecial Weather StatementBMX54 min
Jun 20, 1:00 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 21, 12:05 PM CDTHeat AdvisoryBMX7 hr
Jun 22, 1:27 PM CDTSevere Thunderstorm WatchSPC9 hr
Jun 25, 10:19 PM CDTSevere Thunderstorm WarningBMX26 min
Jun 25, 10:43 PM CDTSpecial Weather StatementBMX32 min
Jun 27, 4:50 PM CDTSpecial Weather StatementBMX25 min
Jun 29, 5:06 PM CDTSpecial Weather StatementBMX24 min
Jun 30, 4:20 AM CDTDense Fog AdvisoryBMX4 hr
Jul 6, 3:02 AM CDTHeat AdvisoryBMX16 hr
Jul 7, 12:21 PM CDTSpecial Weather StatementBMX39 min
Jul 7, 12:48 PM CDTMesoscale DiscussionSPC117 min
Jul 7, 12:56 PM CDTSpecial Weather StatementBMX49 min
Jul 9, 3:04 AM CDTHeat AdvisoryBMX16 hr
Jul 9, 3:02 PM CDTHeat AdvisoryBMX28 hr
Jul 9, 6:52 PM CDTSpecial Weather StatementBMX38 min
Jul 18, 4:49 PM CDTAreal Flood AdvisoryBMX116 min
Jul 19, 11:54 AM CDTAreal Flood AdvisoryBMX2 hr
Jul 19, 2:03 PM CDTAreal Flood AdvisoryBMX117 min
Jul 31, 12:30 PM CDTSpecial Weather StatementBMX30 min
Aug 1, 1:53 PM CDTSpecial Weather StatementBMX37 min
Aug 3, 2:16 PM CDTSpecial Weather StatementBMX29 min
Aug 3, 3:22 PM CDTSpecial Weather StatementBMX38 min
Aug 4, 2:32 PM CDTSpecial Weather StatementBMX28 min
Aug 8, 3:53 AM CDTHeat AdvisoryBMX60 hr
Aug 10, 4:03 PM CDTHeat AdvisoryBMX4 days
Aug 12, 4:21 AM CDTHeat AdvisoryBMX15 hr
Aug 12, 2:19 PM CDTExcessive Heat WarningBMX31 hr
Aug 14, 12:42 AM CDTSpecial Weather StatementBMX33 min
Aug 18, 6:28 PM CDTSpecial Weather StatementBMX32 min
Aug 19, 4:48 AM CDTHeat AdvisoryBMX16 hr
Aug 20, 4:46 PM CDTSpecial Weather StatementBMX29 min
Aug 24, 2:08 PM CDTSpecial Weather StatementBMX37 min
Aug 27, 3:56 PM CDTMesoscale DiscussionSPC2 hr
Aug 27, 6:37 PM CDTSpecial Weather StatementBMX53 min
Sep 6, 2:12 PM CDTHeat AdvisoryBMX3 days
Sep 9, 2:53 PM CDTSevere Thunderstorm WarningBMX35 min
Sep 9, 3:39 PM CDTSpecial Weather StatementBMX36 min
Sep 9, 4:14 PM CDTSpecial Weather StatementBMX46 min
Sep 14, 4:55 PM CDTSpecial Weather StatementBMX35 min
Oct 26, 4:27 AM CDTWind AdvisoryBMX14 hr
Oct 27, 9:53 PM CDTDense Fog AdvisoryBMX13 hr
Oct 28, 9:42 PM CDTDense Fog AdvisoryBMX11 hr
Nov 1, 3:59 AM CDTFrost AdvisoryBMX29 hr
Nov 2, 1:22 PM CDTFrost AdvisoryBMX20 hr
Nov 8, 2:41 AM CSTFreeze WarningBMX29 hr
Nov 9, 12:49 PM CSTFrost AdvisoryBMX18 hr
Nov 11, 3:28 AM CSTFreeze WarningBMX55 hr
Nov 11, 1:28 PM CSTWind AdvisoryBMX28 hr
Dec 1, 12:20 AM CSTSpecial Weather StatementBMX55 min
Dec 7, 12:38 AM CSTDense Fog AdvisoryBMX5 hr
Dec 16, 3:47 PM CSTTornado WatchSPC10 hr
Dec 16, 8:58 PM CSTMesoscale DiscussionSPC92 min
Dec 16, 9:38 PM CSTSevere Thunderstorm WarningBMX67 min
Dec 16, 9:47 PM CSTTornado WatchSPC6 hr
Dec 16, 9:59 PM CSTTornado WarningBMX31 min
Dec 22, 3:53 AM CSTWind AdvisoryBMX20 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 archive20182020

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.