Alert archive / Louisiana / Flash Flood Warnings

Flash Flood Warnings in Louisiana, 2013

82 flash flood warnings in 2013. 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 2013. Tap one for its archive.

Flash Flood Warnings
82
Busiest month
January37 flash flood warnings
Busiest day
January 10, 201323 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.

38 of 82 flash flood warnings covering Louisiana in 2013 had a flash flood report inside them; 60 of 84 flash flood reports fell inside a warning, on average 93 minutes after it went out.

Louisiana, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Flash flood warnings823854%8471%93 min

Each office's whole area, 2013

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Shreveport, LA: flash flood warnings16756%4340%89 min
NWS Jackson, MS: flash flood warnings1467549%14092%74 min
NWS Lake Charles, LA: flash flood warnings321941%4978%112 min
NWS New Orleans, LA: flash flood warnings361364%2993%64 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 8, 8:55 PM CSTFlash Flood WarningLCHIberia, Saint Martin, St. Mary3 hr
Jan 8, 11:55 PM CSTFlash Flood WarningLCHIberia, Saint Martin, St. Mary2 hr
Jan 9, 12:36 AM CSTFlash Flood WarningLIXAscension, East Baton Rouge, Iberville, Livingston3 hr
Jan 9, 1:06 AM CSTFlash Flood WarningLIXAssumption, Lafourche, Saint James, Saint John the Baptist, Terrebonne3 hr
Jan 9, 3:03 AM CSTFlash Flood WarningLCHIberia, St. Mary117 min
Jan 9, 3:28 AM CSTFlash Flood WarningLIXLivingston3 hr
Jan 9, 7:56 AM CSTFlash Flood WarningLIXLivingston109 min
Jan 9, 10:15 AM CSTFlash Flood WarningLIXLivingston3 hr
Jan 9, 1:15 PM CSTFlash Flood WarningLCHAcadia, Jefferson Davis, Vermilion6 hr
Jan 9, 2:14 PM CSTFlash Flood WarningLCHCalcasieu, Cameron, Jefferson Davis6 hr
Jan 9, 5:20 PM CSTFlash Flood WarningLCHAllen, Beauregard, Calcasieu, Evangeline, Saint Landry3 hr
Jan 9, 6:11 PM CSTFlash Flood WarningLCHEvangeline, Rapides, Vernon3 hr
Jan 9, 7:01 PM CSTFlash Flood WarningLCHAcadia, Cameron, Jefferson Davis, Vermilion3 hr
Jan 9, 8:34 PM CSTFlash Flood WarningLCHAllen, Avoyelles, Evangeline, Saint Landry3 hr
Jan 9, 8:58 PM CSTFlash Flood WarningLCHAvoyelles, Evangeline, Rapides, Vernon3 hr
Jan 9, 9:49 PM CSTFlash Flood WarningSHVCaldwell, Grant, LaSalle, Natchitoches, Winn4 hr
Jan 9, 10:00 PM CSTFlash Flood WarningLCHAcadia, Cameron, Jefferson Davis, Lafayette, Saint Landry, Vermilion3 hr
Jan 9, 11:32 PM CSTFlash Flood WarningLCHAllen, Avoyelles, Evangeline, Saint Landry6 hr
Jan 9, 11:48 PM CSTFlash Flood WarningJANCatahoula, Concordia3 hr
Jan 9, 11:51 PM CSTFlash Flood WarningLIXIberville, Pointe Coupee, West Baton Rouge3 hr
Jan 9, 11:56 PM CSTFlash Flood WarningLCHAvoyelles, Evangeline, Rapides, Vernon3 hr
Jan 10, 1:46 AM CSTFlash Flood WarningSHVCaldwell, Grant, LaSalle, Natchitoches, Winn4 hr
Jan 10, 2:46 AM CSTFlash Flood WarningJANCatahoula, Concordia, Franklin, Richland, Tensas7 hr
Jan 10, 2:56 AM CSTFlash Flood WarningLCHAvoyelles, Evangeline, Rapides, Vernon3 hr
Jan 10, 5:34 AM CSTFlash Flood WarningJANEast Carroll, Franklin, Madison, Richland, Tensas6 hr
Jan 10, 5:44 AM CSTFlash Flood WarningSHVCaldwell, Grant, LaSalle, Natchitoches, Winn3 hr
Jan 10, 6:31 AM CSTFlash Flood WarningJANMorehouse, Richland, West Carroll3 hr
Jan 10, 8:17 AM CSTFlash Flood WarningLIXAscension, Assumption, Iberville, Lafourche, Livingston, Saint James and 1 more5 hr
Jan 10, 8:54 AM CSTFlash Flood WarningLIXAssumption, Lafourche, Terrebonne4 hr
Jan 10, 9:14 AM CSTFlash Flood WarningJANMorehouse, Richland, West Carroll3 hr
Jan 10, 9:46 AM CSTFlash Flood WarningJANCatahoula, Concordia, Franklin, Tensas3 hr
Jan 10, 10:50 AM CSTFlash Flood WarningLIXLafourche, Saint Charles, Saint John the Baptist115 min
Jan 10, 11:29 AM CSTFlash Flood WarningJANEast Carroll, Franklin, Madison, Tensas2 hr
Jan 10, 11:36 AM CSTFlash Flood WarningLCHAllen, Avoyelles, Evangeline, Rapides, Saint Landry9 min
Jan 13, 10:26 AM CSTFlash Flood WarningJANEast Carroll, Morehouse, Richland, West Carroll5 hr
Jan 13, 11:51 AM CSTFlash Flood WarningJANFranklin, Madison, Richland, Tensas4 hr
Jan 13, 12:22 PM CSTFlash Flood WarningJANCatahoula, Concordia3 hr
Feb 10, 11:19 AM CSTFlash Flood WarningJANFranklin, Madison, Tensas116 min
Feb 25, 4:15 AM CSTFlash Flood WarningLIXSaint Tammany3 hr
Apr 11, 9:28 AM CDTFlash Flood WarningJANWest Carroll2 hr
Apr 14, 4:55 AM CDTFlash Flood WarningLIXEast Feliciana, Pointe Coupee, West Feliciana3 hr
Apr 14, 7:16 AM CDTFlash Flood WarningLIXLafourche, Saint Charles, Saint James, Saint John the Baptist3 hr
Apr 28, 3:15 PM CDTFlash Flood WarningLIXLivingston90 min
May 1, 12:30 PM CDTFlash Flood WarningLIXJefferson2 hr
May 1, 3:45 PM CDTFlash Flood WarningJANFranklin, Madison, Morehouse, Richland, Tensas3 hr
May 1, 6:38 PM CDTFlash Flood WarningLIXEast Feliciana, West Feliciana112 min
May 2, 3:09 PM CDTFlash Flood WarningLIXJefferson, Orleans111 min
May 10, 3:02 PM CDTFlash Flood WarningLIXAssumption, Lafourche, Saint James, Saint John the Baptist, Terrebonne118 min
May 10, 5:01 PM CDTFlash Flood WarningLIXLafourche, Terrebonne59 min
May 22, 4:23 AM CDTFlash Flood WarningLIXEast Feliciana, West Feliciana3 hr
May 22, 5:50 AM CDTFlash Flood WarningLIXAscension, East Baton Rouge, Iberville, Livingston, Tangipahoa, West Baton Rouge115 min
May 22, 8:38 AM CDTFlash Flood WarningLIXAssumption, Saint James112 min
Jun 1, 10:26 PM CDTFlash Flood WarningSHVClaiborne, Lincoln, Ouachita, Union4 hr
Jun 1, 10:44 PM CDTFlash Flood WarningSHVJackson, Ouachita4 hr
Jun 2, 2:27 AM CDTFlash Flood WarningJANMadison3 hr
Jun 2, 4:49 AM CDTFlash Flood WarningJANFranklin, Madison, Tensas116 min
Jun 5, 11:47 PM CDTFlash Flood WarningJANFranklin, Madison, Tensas2 hr
Jun 6, 2:08 AM CDTFlash Flood WarningSHVOuachita3 hr
Jun 6, 2:11 AM CDTFlash Flood WarningJANFranklin, Madison, Tensas2 hr
Jun 6, 6:23 AM CDTFlash Flood WarningSHVBienville, Grant, Natchitoches, Red River, Winn3 hr
Jun 6, 4:40 PM CDTFlash Flood WarningLIXSaint Tammany3 hr
Jun 9, 5:59 PM CDTFlash Flood WarningJANConcordia, Tensas91 min
Jul 11, 1:44 PM CDTFlash Flood WarningLIXSaint Tammany3 hr
Jul 11, 2:59 PM CDTFlash Flood WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard3 hr
Jul 14, 2:01 PM CDTFlash Flood WarningJANTensas119 min
Jul 18, 6:14 PM CDTFlash Flood WarningLIXJefferson3 hr
Jul 24, 3:19 PM CDTFlash Flood WarningJANMadison116 min
Aug 14, 8:08 AM CDTFlash Flood WarningJANCatahoula, Concordia2 hr
Sep 20, 2:34 PM CDTFlash Flood WarningSHVBossier, Caddo116 min
Sep 20, 10:35 PM CDTFlash Flood WarningLCHAllen, Calcasieu, Jefferson Davis3 hr
Sep 20, 10:47 PM CDTFlash Flood WarningLCHAllen, Beauregard, Calcasieu3 hr
Sep 20, 11:59 PM CDTFlash Flood WarningLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 2 more3 hr
Sep 21, 3:09 AM CDTFlash Flood WarningLCHAcadia, Allen, Beauregard, Calcasieu, Evangeline, Jefferson Davis6 hr
Sep 30, 12:14 PM CDTFlash Flood WarningLCHBeauregard106 min
Oct 6, 12:13 AM CDTFlash Flood WarningJANEast Carroll, West Carroll2 hr
Oct 6, 2:14 AM CDTFlash Flood WarningJANEast Carroll, West Carroll2 hr
Oct 31, 8:13 AM CDTFlash Flood WarningLCHBeauregard, Rapides, Vernon6 hr
Oct 31, 8:50 AM CDTFlash Flood WarningSHVGrant, Natchitoches, Sabine, Winn3 hr
Oct 31, 9:18 AM CDTFlash Flood WarningJANFranklin, Morehouse, Richland, West Carroll6 hr
Oct 31, 9:47 AM CDTFlash Flood WarningLCHBeauregard, Calcasieu, Vernon4 hr
Oct 31, 11:45 AM CDTFlash Flood WarningJANEast Carroll, Madison6 hr
Oct 31, 12:26 PM CDTFlash Flood WarningLCHAllen, Avoyelles, Beauregard, Evangeline, Rapides, Saint Landry and 1 more4 hr

By county

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

20 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. January 10, 201323flash flood warnings
  2. January 9, 201311flash flood warnings
  3. October 31, 20136flash flood warnings
  4. June 6, 20135flash flood warnings
  5. June 2, 20134flash flood warnings
  6. September 21, 20134flash flood warnings
  7. January 13, 20133flash flood warnings
  8. May 1, 20133flash flood warnings
  9. May 22, 20133flash flood warnings
  10. April 14, 20132flash flood warnings
  11. May 10, 20132flash flood warnings
  12. July 11, 20132flash flood warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20122014

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.