Alert archive / Louisiana / Flash Flood Warnings

Flash Flood Warnings in Louisiana, 2023

98 flash flood warnings in 2023. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.

Flash Flood Warnings by county

Each county as a circle sized by its count in 2023. Tap one for its archive.

Flash Flood Warnings
98
Busiest month
January26 flash flood warnings
Busiest day
January 3, 20239 flash flood warnings

Over time

By month

Warning verification

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

45 of 98 flash flood warnings covering Louisiana in 2023 had a flash flood report inside them; 82 of 96 flash flood reports fell inside a warning, on average 79 minutes after it went out.

Louisiana, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Flash flood warnings984554%9685%79 min

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Jackson, MS: flash flood warnings552751%8683%85 min
NWS New Orleans, LA: flash flood warnings531670%4596%90 min
NWS Shreveport, LA: flash flood warnings543633%9689%72 min
NWS Lake Charles, LA: flash flood warnings401368%2665%66 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.

IssuedProductOfficeCountiesLasted
Jan 2, 4:42 PM CSTFlash Flood WarningSHVBienville, Natchitoches, Red River3 hr
Jan 2, 4:58 PM CSTFlash Flood WarningSHVDe Soto, Natchitoches, Red River, Sabine5 hr
Jan 2, 5:01 PM CSTFlash Flood WarningSHVBienville, Jackson, Lincoln, Natchitoches, Ouachita, Winn3 hr
Jan 2, 5:17 PM CSTFlash Flood WarningSHVGrant, Natchitoches, Winn3 hr
Jan 2, 5:42 PM CSTFlash Flood WarningSHVGrant, Jackson, Lincoln, Natchitoches, Ouachita, Union and 1 more3 hr
Jan 2, 7:22 PM CSTFlash Flood Warning Considerable damage threatSHVCaldwell, Jackson, Ouachita, Union3 hr
Jan 2, 7:46 PM CSTFlash Flood WarningJANMorehouse4 hr
Jan 2, 7:50 PM CSTFlash Flood WarningSHVBossier, Caddo, De Soto, Webster5 hr
Jan 2, 7:55 PM CSTFlash Flood WarningSHVBossier, Caddo, Webster7 hr
Jan 2, 8:49 PM CSTFlash Flood WarningSHVBienville, Claiborne, Union5 hr
Jan 2, 9:03 PM CSTFlash Flood WarningSHVBossier, Caddo, De Soto3 hr
Jan 2, 11:24 PM CSTFlash Flood WarningSHVClaiborne, Webster3 hr
Jan 3, 6:56 AM CSTFlash Flood WarningJANMorehouse3 hr
Jan 3, 8:39 AM CSTFlash Flood WarningLCHAvoyelles, Rapides3 hr
Jan 8, 1:55 AM CSTFlash Flood WarningJANRichland2 hr
Jan 8, 2:19 AM CSTFlash Flood WarningSHVWinn3 hr
Jan 8, 4:15 AM CSTFlash Flood WarningLCHAllen, Beauregard, Evangeline, Vernon3 hr
Jan 8, 6:56 AM CSTFlash Flood WarningLCHAcadia, Calcasieu, Jefferson Davis53 min
Jan 21, 5:13 AM CSTFlash Flood WarningLIXEast Baton Rouge, Livingston, West Baton Rouge107 min
Jan 24, 4:22 PM CSTFlash Flood WarningLCHAllen, Beauregard, Calcasieu, Vernon3 hr
Jan 24, 4:24 PM CSTFlash Flood WarningLCHCalcasieu, Cameron3 hr
Jan 24, 5:55 PM CSTFlash Flood WarningLCHAllen, Avoyelles, Evangeline, Rapides, Vernon3 hr
Jan 24, 6:54 PM CSTFlash Flood WarningLCHAcadia, Jefferson Davis, Lafayette, Saint Landry, Saint Martin, Vermilion3 hr
Jan 29, 9:46 AM CSTFlash Flood WarningLIXEast Baton Rouge4 hr
Jan 29, 11:04 AM CSTFlash Flood WarningLIXLivingston3 hr
Jan 29, 11:15 AM CSTFlash Flood WarningLIXTangipahoa3 hr
Feb 8, 4:19 PM CSTFlash Flood WarningLCHAllen, Beauregard, Calcasieu3 hr
Feb 8, 9:29 PM CSTFlash Flood WarningLIXEast Baton Rouge, East Feliciana, Livingston, Saint Helena, Tangipahoa, Washington5 hr
Feb 8, 10:23 PM CSTFlash Flood WarningLIXSaint Tammany, Washington5 hr
Feb 8, 10:30 PM CSTFlash Flood WarningLIXJefferson, Lafourche, Saint Charles, Saint John the Baptist, Terrebonne4 hr
Feb 8, 11:09 PM CSTFlash Flood WarningLIXSaint Tammany, Washington4 hr
Feb 8, 11:14 PM CSTFlash Flood WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles4 hr
Feb 16, 11:39 AM CSTFlash Flood WarningLIXEast Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena, West Baton Rouge and 1 more2 hr
Feb 16, 4:51 PM CSTFlash Flood WarningLIXEast Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee, Saint Helena and 2 more117 min
Mar 27, 8:02 PM CDTFlash Flood WarningLIXEast Baton Rouge, Iberville, West Baton Rouge3 hr
Apr 6, 2:49 AM CDTFlash Flood WarningSHVBossier, Caddo, De Soto3 hr
Apr 6, 4:18 AM CDTFlash Flood WarningSHVDe Soto3 hr
Apr 6, 6:52 PM CDTFlash Flood WarningLCHCameron5 hr
Apr 6, 7:44 PM CDTFlash Flood WarningLCHCalcasieu, Cameron3 hr
Apr 6, 8:31 PM CDTFlash Flood WarningLCHCalcasieu, Cameron, Jefferson Davis3 hr
Apr 7, 12:47 AM CDTFlash Flood WarningLCHAcadia, Calcasieu, Cameron, Jefferson Davis, Lafayette, Saint Landry and 1 more5 hr
Apr 7, 1:43 AM CDTFlash Flood WarningLCHCalcasieu, Jefferson Davis4 hr
Apr 7, 10:03 AM CDTFlash Flood WarningLIXEast Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana3 hr
Apr 15, 11:57 AM CDTFlash Flood WarningLIXAscension, East Baton Rouge, Livingston2 hr
Apr 27, 4:51 AM CDTFlash Flood WarningJANFranklin, Tensas108 min
Apr 29, 3:36 PM CDTFlash Flood WarningLIXSaint Tammany103 min
May 5, 5:18 AM CDTFlash Flood WarningLCHSaint Landry, Saint Martin52 min
May 9, 12:41 PM CDTFlash Flood WarningLIXOrleans5 hr
May 9, 2:28 PM CDTFlash Flood WarningLIXJefferson, Orleans2 hr
May 9, 7:49 PM CDTFlash Flood WarningLCHCalcasieu3 hr
May 11, 6:18 AM CDTFlash Flood WarningSHVBossier, Caddo, De Soto6 hr
May 11, 7:44 AM CDTFlash Flood WarningSHVBossier, Caddo, De Soto, Red River, Sabine6 hr
May 11, 10:17 AM CDTFlash Flood Warning Considerable damage threatSHVDe Soto, Natchitoches, Red River, Winn3 hr
May 11, 10:46 AM CDTFlash Flood Warning Considerable damage threatSHVClaiborne6 hr
May 11, 12:00 PM CDTFlash Flood Warning Considerable damage threatSHVClaiborne, Union5 hr
Jun 3, 5:32 PM CDTFlash Flood WarningSHVBienville, Bossier, Caddo, De Soto, Red River3 hr
Jun 3, 6:01 PM CDTFlash Flood Warning Considerable damage threatSHVBossier, Caddo119 min
Jun 3, 10:03 PM CDTFlash Flood WarningLIXEast Baton Rouge, West Baton Rouge3 hr
Jun 17, 4:49 PM CDTFlash Flood WarningLIXEast Baton Rouge, Livingston, West Baton Rouge51 min
Jun 19, 9:10 PM CDTFlash Flood WarningLIXSaint Tammany3 hr
Jun 19, 9:55 PM CDTFlash Flood WarningLIXSaint Tammany, Tangipahoa3 hr
Jun 19, 11:19 PM CDTFlash Flood WarningLIXLivingston, Saint Helena, Tangipahoa5 hr
Jun 20, 6:19 PM CDTFlash Flood WarningLIXAscension, Assumption, Iberville, Lafourche, Saint James, Saint John the Baptist3 hr
Jul 5, 1:52 PM CDTFlash Flood WarningLIXOrleans, Saint Bernard3 hr
Jul 5, 4:56 PM CDTFlash Flood WarningLCHSaint Martin, St. Mary3 hr
Jul 5, 9:29 PM CDTFlash Flood WarningLCHCalcasieu3 hr
Jul 6, 6:01 PM CDTFlash Flood WarningJANFranklin, Richland119 min
Jul 6, 6:15 PM CDTFlash Flood WarningSHVCaldwell, Jackson, Ouachita12 min
Jul 6, 6:52 PM CDTFlash Flood WarningSHVBienville, Bossier, Caddo, De Soto, Red River, Webster2 hr
Jul 6, 7:10 PM CDTFlash Flood WarningSHVBienville, Caldwell, Jackson, Natchitoches, Ouachita, Winn3 hr
Jul 6, 8:10 PM CDTFlash Flood WarningJANCatahoula, Concordia, Franklin, Tensas95 min
Jul 8, 1:42 PM CDTFlash Flood WarningLIXJefferson, Orleans113 min
Jul 10, 6:35 PM CDTFlash Flood WarningLCHCalcasieu70 min
Jul 12, 5:52 AM CDTFlash Flood Warning Considerable damage threatSHVClaiborne, Union, Webster4 hr
Jul 12, 8:19 AM CDTFlash Flood Warning EmergencyCatastrophic damage threatSHVClaiborne3 hr
Jul 16, 3:52 PM CDTFlash Flood WarningLIXJefferson, Orleans, Saint Bernard50 min
Jul 16, 4:22 PM CDTFlash Flood WarningLIXEast Feliciana3 hr
Jul 16, 4:50 PM CDTFlash Flood Warning Considerable damage threatLIXEast Feliciana3 hr
Jul 22, 7:30 PM CDTFlash Flood WarningLIXJefferson, Orleans, Saint Bernard64 min
Aug 28, 5:59 PM CDTFlash Flood WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard64 min
Aug 29, 3:42 PM CDTFlash Flood WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard98 min
Sep 4, 11:54 AM CDTFlash Flood WarningLIXSaint Tammany3 hr
Sep 4, 12:11 PM CDTFlash Flood WarningLIXJefferson, Orleans, Saint Charles3 hr
Sep 4, 12:52 PM CDTFlash Flood Warning Considerable damage threatLIXSaint Tammany113 min
Sep 4, 3:15 PM CDTFlash Flood WarningLIXJefferson, Orleans, Saint Charles3 hr
Sep 25, 5:39 AM CDTFlash Flood WarningLIXTangipahoa111 min
Sep 25, 3:38 PM CDTFlash Flood WarningLIXJefferson112 min
Sep 25, 5:21 PM CDTFlash Flood WarningLIXJefferson61 min
Nov 20, 3:51 PM CSTFlash Flood WarningLCHVernon3 hr
Nov 20, 5:55 PM CSTFlash Flood WarningJANConcordia, Tensas2 hr
Nov 20, 8:02 PM CSTFlash Flood WarningLCHAvoyelles, Evangeline118 min
Nov 21, 1:34 AM CSTFlash Flood WarningLIXSaint Charles, Saint James, Saint John the Baptist93 min
Nov 30, 9:31 PM CSTFlash Flood WarningLCHCalcasieu, Cameron, Jefferson Davis3 hr
Dec 1, 1:34 AM CSTFlash Flood WarningLCHAcadia, Jefferson Davis, Lafayette, Saint Landry, Saint Martin, Vermilion2 hr
Dec 1, 4:33 AM CSTFlash Flood WarningLIXAscension, East Baton Rouge, Iberville, Livingston, West Baton Rouge67 min
Dec 1, 9:26 PM CSTFlash Flood WarningLCHLafayette, Saint Martin, Vermilion88 min
Dec 1, 9:57 PM CSTFlash Flood WarningLCHSaint Martin, St. Mary3 hr
Dec 2, 5:10 AM CSTFlash Flood WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard3 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

19 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordThe radar archive20222024

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.