Alert archive / Missouri / Madison County

Weather alerts in Madison County, Missouri, 2019

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

Madison County and its neighbors

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

Alerts
108
Warnings
17
Watches
26
Advisories
34
Busiest month
May20 alerts
Busiest day
May 1, 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.

0 of 1 tornado reports fell inside a warning.

Madison County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings010%
Severe thunderstorm warnings10370%633%30 min
Flash flood warnings2150%0

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS St. Louis, MO: tornado warnings49982%2959%23 min
NWS St. Louis, MO: severe thunderstorm warnings24112946%38976%24 min
NWS St. Louis, MO: flash flood warnings553144%12794%128 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 10, 3:33 AM CSTWinter Storm WatchLSX12 hr
Jan 10, 3:31 PM CSTWinter Storm WarningLSX62 hr
Jan 11, 10:37 AM CSTMesoscale DiscussionSPC6 hr
Jan 18, 2:45 AM CSTWinter Weather AdvisoryLSX41 hr
Jan 28, 3:49 PM CSTWind Chill AdvisoryLSX44 hr
Jan 30, 3:47 AM CSTWinter Weather AdvisoryLSX19 hr
Jan 31, 2:41 PM CSTWinter Weather AdvisoryLSX12 hr
Feb 2, 3:34 AM CSTDense Fog AdvisoryLSX8 hr
Feb 5, 3:44 PM CSTFlood WatchLSX44 hr
Feb 6, 8:50 PM CSTDense Fog AdvisoryLSX9 hr
Feb 9, 3:17 AM CSTWinter Weather AdvisoryLSX35 hr
Feb 10, 1:15 AM CSTMesoscale DiscussionSPC5 hr
Feb 10, 3:38 AM CSTFlood WatchLSX47 hr
Feb 14, 3:01 PM CSTWinter Weather AdvisoryLSX32 hr
Feb 16, 3:25 AM CSTWinter Weather AdvisoryLSX39 hr
Feb 18, 3:20 PM CSTWinter Weather AdvisoryLSX44 hr
Feb 20, 9:09 AM CSTDense Fog AdvisoryLSX3 hr
Feb 22, 3:45 PM CSTWind AdvisoryLSX50 hr
Feb 23, 2:47 AM CSTDense Fog AdvisoryLSX9 hr
Feb 27, 3:16 AM CSTWinter Weather AdvisoryLSX39 hr
Mar 1, 3:36 AM CSTWinter Storm WatchLSX24 hr
Mar 2, 3:37 AM CSTWinter Weather AdvisoryLSX35 hr
Mar 8, 3:03 PM CSTWind AdvisoryLSX33 hr
Mar 12, 3:30 PM CDTWind AdvisoryLSX28 hr
Mar 13, 3:42 AM CDTHigh Wind WatchLSX24 hr
Mar 14, 3:33 AM CDTHigh Wind WarningLSX18 hr
Mar 24, 1:53 PM CDTMesoscale DiscussionSPC3 hr
Mar 24, 2:52 PM CDTSevere Thunderstorm WatchSPC7 hr
Mar 24, 5:11 PM CDTMesoscale DiscussionSPC2 hr
Mar 24, 8:01 PM CDTMesoscale DiscussionSPC119 min
Apr 10, 3:37 PM CDTWind AdvisoryLSX27 hr
Apr 14, 3:30 AM CDTFrost AdvisoryLSX30 hr
Apr 18, 1:15 AM CDTMesoscale DiscussionSPC60 min
Apr 23, 5:33 PM CDTSevere Thunderstorm WarningLSX42 min
Apr 23, 6:13 PM CDTSpecial Weather StatementLSX32 min
Apr 29, 3:28 PM CDTFlash Flood WatchLSX3 days
Apr 30, 7:29 PM CDTMesoscale DiscussionSPC61 min
Apr 30, 8:03 PM CDTTornado WatchSPC5 hr
Apr 30, 10:13 PM CDTMesoscale DiscussionSPC92 min
Apr 30, 11:20 PM CDTSevere Thunderstorm WarningLSX40 min
Apr 30, 11:44 PM CDTSevere Thunderstorm WarningLSX46 min
Apr 30, 11:51 PM CDTAreal Flood WarningLSX24 hr
May 18, 4:40 PM CDTSevere Thunderstorm WatchSPC4 hr
May 18, 7:19 PM CDTMesoscale DiscussionSPC116 min
May 21, 12:55 AM CDTMesoscale DiscussionSPC95 min
May 21, 3:40 AM CDTFlash Flood WatchLSX20 hr
May 21, 3:10 PM CDTTornado WatchSPC8 hr
May 21, 5:43 PM CDTMesoscale DiscussionSPC62 min
May 21, 5:59 PM CDTSevere Thunderstorm WarningLSX76 min
May 21, 6:32 PM CDTSevere Thunderstorm WarningLSX88 min
May 21, 7:37 PM CDTMesoscale DiscussionSPC83 min
May 22, 10:26 PM CDTTornado WatchSPC8 hr
May 23, 2:39 PM CDTMesoscale DiscussionSPC96 min
May 28, 3:28 AM CDTFlash Flood WatchLSX41 hr
May 29, 3:48 PM CDTMesoscale DiscussionSPC87 min
May 29, 4:34 PM CDTSevere Thunderstorm WatchSPC3 hr
Jun 1, 11:37 PM CDTSpecial Weather StatementLSX38 min
Jun 2, 12:13 AM CDTSpecial Weather StatementLSX32 min
Jun 4, 2:52 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 4, 4:57 PM CDTMesoscale DiscussionSPC93 min
Jun 16, 3:42 PM CDTMesoscale DiscussionSPC93 min
Jun 17, 3:16 AM CDTFlash Flood WatchLSX17 hr
Jun 19, 7:10 PM CDTMesoscale DiscussionSPC2 hr
Jun 21, 8:28 AM CDTSevere Thunderstorm WatchSPC9 hr
Jun 26, 1:06 PM CDTMesoscale DiscussionSPC114 min
Jun 26, 6:18 PM CDTFlash Flood WarningLSX3 hr
Jul 9, 1:32 PM CDTHeat AdvisoryLSX29 hr
Jul 14, 2:35 AM CDTFlash Flood WatchLSX61 hr
Jul 16, 3:32 PM CDTHeat AdvisoryLSX5 days
Jul 17, 5:50 PM CDTAreal Flood AdvisoryLSX3 hr
Jul 22, 1:32 AM CDTFlash Flood WarningLSX8 hr
Aug 6, 1:08 PM CDTMesoscale DiscussionSPC2 hr
Aug 6, 1:49 PM CDTSevere Thunderstorm WatchSPC7 hr
Aug 6, 3:47 PM CDTMesoscale DiscussionSPC118 min
Aug 6, 4:15 PM CDTSevere Thunderstorm WarningLSX45 min
Aug 6, 5:43 PM CDTMesoscale DiscussionSPC92 min
Aug 8, 3:29 AM CDTDense Fog AdvisoryLSX4 hr
Aug 11, 3:43 AM CDTHeat AdvisoryLSX41 hr
Aug 18, 12:35 PM CDTMesoscale DiscussionSPC115 min
Aug 18, 1:05 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 18, 3:29 PM CDTMesoscale DiscussionSPC91 min
Aug 20, 6:18 AM CDTSevere Thunderstorm WatchSPC11 hr
Aug 20, 2:18 PM CDTSevere Thunderstorm WarningLSX57 min
Aug 20, 3:14 PM CDTSevere Thunderstorm WarningLSX61 min
Aug 21, 3:27 PM CDTSpecial Weather StatementLSX48 min
Aug 21, 4:16 PM CDTSpecial Weather StatementLSX44 min
Aug 21, 4:58 PM CDTSpecial Weather StatementLSX62 min
Aug 21, 7:49 PM CDTAreal Flood AdvisoryLSX5 hr
Aug 26, 2:51 PM CDTSevere Thunderstorm WatchSPC4 hr
Aug 27, 2:06 AM CDTAreal Flood AdvisoryLSX3 hr
Aug 30, 3:44 PM CDTSevere Thunderstorm WatchSPC4 hr
Sep 1, 9:41 PM CDTDense Fog AdvisoryLSX12 hr
Oct 11, 3:57 AM CDTFreeze WarningLSX28 hr
Oct 21, 1:54 AM CDTMesoscale DiscussionSPC2 hr
Oct 21, 3:06 AM CDTTornado WatchSPC6 hr
Oct 21, 3:44 AM CDTSevere Thunderstorm WarningLSX46 min
Oct 27, 1:54 AM CDTDense Fog AdvisoryLSX8 hr
Oct 30, 3:23 AM CDTFreeze WarningLSX31 hr
Nov 10, 2:57 PM CSTWinter Weather AdvisoryLSX28 hr
Nov 26, 3:22 AM CSTWind AdvisoryLSX33 hr
Nov 26, 6:20 PM CSTTornado WatchSPC6 hr
Nov 26, 9:58 PM CSTSevere Thunderstorm WarningLSX32 min
Nov 30, 2:23 PM CSTWind AdvisoryLSX28 hr
Dec 8, 1:11 AM CSTDense Fog AdvisoryLSX8 hr
Dec 14, 3:54 AM CSTWinter Storm WatchLSX24 hr
Dec 14, 3:15 PM CSTWinter Weather AdvisoryLSX57 hr
Dec 16, 10:36 AM CSTMesoscale DiscussionSPC4 hr
Dec 28, 4:30 AM CSTDense Fog AdvisoryLSX7 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.