Alert archive / Louisiana / Madison Parish

Weather alerts in Madison Parish, Louisiana, 2021

95 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Madison Parish and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts
95
Warnings
22
Watches
15
Advisories
27
Busiest month
March16 alerts
Busiest day
May 4, 20215 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 1 tornado warnings covering Madison Parish in 2021 had a tornado report inside them; 1 of 2 tornado reports fell inside a warning, on average 14 minutes after it went out.

Madison Parish, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings110%250%14 min
Severe thunderstorm warnings11827%367%64 min
Flash flood warnings00

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: tornado warnings622265%7661%21 min
NWS Jackson, MS: severe thunderstorm warnings29616943%53086%28 min
NWS Jackson, MS: flash flood warnings1106640%19983%83 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 9, 2:54 PM CSTWinter Storm WatchJAN13 hr
Jan 10, 3:52 AM CSTWinter Storm WarningJAN32 hr
Jan 15, 4:01 AM CSTWind AdvisoryJAN14 hr
Feb 11, 3:43 PM CSTWinter Weather AdvisoryJAN20 hr
Feb 12, 4:09 PM CSTWinter Storm WatchJAN23 hr
Feb 12, 9:06 PM CSTWinter Weather AdvisoryJAN13 hr
Feb 13, 3:13 PM CSTWinter Storm WarningJAN48 hr
Feb 14, 9:09 PM CSTHard Freeze WarningJAN63 hr
Feb 14, 9:41 PM CSTWind Chill AdvisoryJAN35 hr
Feb 16, 4:25 AM CSTWinter Storm WatchJAN10 hr
Feb 16, 2:50 PM CSTWinter Storm WarningJAN39 hr
Feb 17, 10:53 AM CSTMesoscale DiscussionSPC6 hr
Feb 18, 6:25 AM CSTWinter Weather AdvisoryJAN14 hr
Feb 18, 9:24 AM CSTHard Freeze WarningJAN27 hr
Feb 19, 3:45 AM CSTHard Freeze WarningJAN29 hr
Mar 1, 12:16 PM CSTRiver Flood AdvisoryJAN18 days
Mar 15, 5:03 AM CDTSpecial Weather StatementJAN42 min
Mar 16, 3:27 PM CDTSevere Thunderstorm WarningJAN48 min
Mar 16, 3:48 PM CDTMesoscale DiscussionSPC117 min
Mar 16, 4:16 PM CDTSevere Thunderstorm WarningJAN59 min
Mar 17, 12:15 PM CDTMesoscale DiscussionSPC90 min
Mar 17, 12:57 PM CDTTornado Watch PDSSPC6 hr
Mar 17, 2:56 PM CDTMesoscale DiscussionSPC94 min
Mar 17, 4:34 PM CDTSevere Thunderstorm WarningJAN56 min
Mar 19, 11:09 AM CDTRiver Flood WarningJAN31 days
Mar 22, 2:25 PM CDTWind AdvisoryJAN23 hr
Mar 24, 12:10 PM CDTWind AdvisoryJAN26 hr
Mar 24, 9:25 PM CDTMesoscale DiscussionSPC65 min
Mar 25, 10:58 AM CDTMesoscale DiscussionSPC3 hr
Mar 30, 5:46 PM CDTMesoscale DiscussionSPC119 min
Mar 31, 2:57 AM CDTWind AdvisoryJAN17 hr
Apr 1, 10:41 AM CDTFreeze WatchJAN17 hr
Apr 7, 5:12 PM CDTMesoscale DiscussionSPC2 hr
Apr 7, 7:00 PM CDTMesoscale DiscussionSPC60 min
Apr 8, 6:11 AM CDTDense Fog AdvisoryJAN3 hr
Apr 9, 3:42 PM CDTSevere Thunderstorm WatchSPC7 hr
Apr 9, 6:14 PM CDTMesoscale DiscussionSPC3 hr
Apr 9, 6:55 PM CDTSevere Thunderstorm WarningJAN80 min
Apr 9, 8:49 PM CDTSevere Thunderstorm WarningJAN41 min
Apr 9, 10:03 PM CDTSpecial Weather StatementJAN27 min
Apr 23, 3:22 PM CDTFlash Flood WatchJAN14 hr
May 2, 3:33 PM CDTMesoscale DiscussionSPC117 min
May 2, 4:46 PM CDTTornado WatchSPC5 hr
May 2, 4:51 PM CDTTornado WarningJAN39 min
May 4, 8:33 AM CDTMesoscale DiscussionSPC117 min
May 4, 10:52 AM CDTTornado WatchSPC7 hr
May 4, 12:16 PM CDTMesoscale DiscussionSPC89 min
May 4, 12:57 PM CDTSevere Thunderstorm WarningJAN76 min
May 4, 1:37 PM CDTSevere Thunderstorm WarningJAN53 min
May 9, 2:29 PM CDTSpecial Weather StatementJAN46 min
May 9, 3:53 PM CDTMesoscale DiscussionSPC2 hr
May 9, 5:41 PM CDTMesoscale DiscussionSPC2 hr
May 9, 7:29 PM CDTSevere Thunderstorm WatchSPC4 hr
May 9, 9:32 PM CDTMesoscale DiscussionSPC118 min
Jun 7, 3:26 PM CDTSpecial Weather StatementJAN49 min
Jun 7, 5:09 PM CDTSevere Thunderstorm WatchSPC3 hr
Jun 8, 11:17 AM CDTMesoscale DiscussionSPC118 min
Jun 8, 12:42 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 8, 2:47 PM CDTMesoscale DiscussionSPC118 min
Jun 8, 3:37 PM CDTSevere Thunderstorm WarningJAN53 min
Jun 8, 4:08 PM CDTSevere Thunderstorm WarningJAN52 min
Jun 13, 12:22 PM CDTSevere Thunderstorm WatchSPC9 hr
Jun 14, 3:04 AM CDTHeat AdvisoryJAN12 hr
Jun 21, 5:21 PM CDTSpecial Weather StatementJAN39 min
Jun 21, 7:17 PM CDTMesoscale DiscussionSPC118 min
Jul 12, 3:00 AM CDTSevere Thunderstorm WarningJAN45 min
Jul 18, 2:14 PM CDTMesoscale DiscussionSPC2 hr
Jul 23, 2:40 PM CDTHeat AdvisoryJAN28 hr
Jul 24, 2:55 PM CDTHeat AdvisoryJAN28 hr
Jul 25, 2:32 PM CDTHeat AdvisoryJAN28 hr
Jul 26, 2:54 PM CDTHeat AdvisoryJAN28 hr
Jul 27, 2:54 PM CDTExcessive Heat WarningJAN4 days
Jul 27, 2:54 PM CDTHeat AdvisoryJAN5 days
Jul 27, 5:34 PM CDTSevere Thunderstorm WarningJAN41 min
Aug 1, 3:05 PM CDTSpecial Weather StatementJAN55 min
Aug 9, 3:22 AM CDTHeat AdvisoryJAN16 hr
Aug 9, 2:26 PM CDTHeat AdvisoryJAN3 days
Aug 14, 2:48 PM CDTSpecial Weather StatementJAN27 min
Aug 20, 3:05 PM CDTHeat AdvisoryJAN3 days
Aug 22, 2:29 PM CDTExcessive Heat WarningJAN53 hr
Aug 24, 3:01 PM CDTHeat AdvisoryJAN28 hr
Aug 25, 3:10 PM CDTHeat AdvisoryJAN28 hr
Aug 27, 4:10 PM CDTTropical Storm WatchJAN24 hr
Aug 28, 3:36 AM CDTFlash Flood WatchJAN66 hr
Aug 28, 10:00 AM CDTTropical Storm WarningJAN54 hr
Aug 29, 2:36 PM CDTSpecial Weather StatementJAN39 min
Sep 1, 4:08 AM CDTHeat AdvisoryJAN15 hr
Sep 1, 9:58 PM CDTSpecial Weather StatementJAN32 min
Oct 4, 2:54 AM CDTDense Fog AdvisoryJAN6 hr
Nov 6, 10:16 PM CDTDense Fog AdvisoryJAN13 hr
Nov 11, 9:29 PM CSTDense Fog AdvisoryJAN12 hr
Dec 2, 8:58 PM CSTDense Fog AdvisoryJAN13 hr
Dec 4, 3:02 PM CSTDense Fog AdvisoryJAN18 hr
Dec 6, 7:17 AM CSTMesoscale DiscussionSPC118 min
Dec 10, 10:00 PM CSTMesoscale DiscussionSPC90 min

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 archive20202022

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.