Alert archive / Louisiana / Tornado Warnings

Tornado Warnings in Louisiana, 2014

54 tornado warnings in 2014. 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 tornado warnings reaches back to 1986.

Tornado Warnings by county

Each county as a circle sized by its count in 2014. Tap one for its archive.

Tornado Warnings
54
Busiest month
December13 tornado warnings
Busiest day
December 23, 201411 tornado warnings

Over time

By month

Warning verification

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

7 of 54 tornado warnings covering Louisiana in 2014 had a tornado report inside them; 11 of 22 tornado reports fell inside a warning, on average 10 minutes after it went out.

Louisiana, 2014

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings54787%2250%10 min

Each office's whole area, 2014

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Shreveport, LA: tornado warnings20290%1619%13 min
NWS Lake Charles, LA: tornado warnings15193%825%4 min
NWS New Orleans, LA: tornado warnings39685%1283%15 min
NWS Jackson, MS: tornado warnings872769%14787%27 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
Feb 20, 5:42 PM CSTTornado WarningLIXEast Feliciana, Pointe Coupee, West Feliciana33 min
Feb 20, 6:48 PM CSTTornado WarningLIXWashington27 min
Mar 16, 4:45 AM CDTTornado WarningLIXWashington30 min
Mar 16, 7:03 AM CDTTornado WarningLIXSaint Tammany27 min
Apr 4, 7:09 AM CDTTornado WarningLCHEvangeline, Rapides36 min
Apr 4, 7:16 AM CDTTornado WarningLCHBeauregard29 min
Apr 7, 12:42 AM CDTTornado WarningLIXTangipahoa, Washington48 min
Apr 14, 2:49 PM CDTTornado WarningLIXJefferson, Plaquemines41 min
Apr 28, 3:10 AM CDTTornado WarningSHVBossier, Caddo, Webster50 min
Apr 28, 3:44 AM CDTTornado WarningSHVCaddo, De Soto46 min
May 28, 4:13 AM CDTTornado WarningLIXAscension, Livingston, Saint James, Saint John the Baptist32 min
May 28, 5:29 AM CDTTornado WarningLIXSaint John the Baptist31 min
May 28, 8:50 AM CDTTornado WarningLIXAscension, Saint James25 min
May 28, 10:02 AM CDTTornado WarningLIXAscension28 min
May 28, 11:25 AM CDTTornado WarningLIXLivingston, Saint Helena, Tangipahoa20 min
May 28, 11:45 AM CDTTornado WarningLIXTangipahoa30 min
Jun 8, 7:29 PM CDTTornado WarningSHVOuachita, Union24 min
Jun 10, 10:20 AM CDTTornado WarningLCHLafayette, Vermilion25 min
Jun 27, 10:10 AM CDTTornado WarningLCHCameron50 min
Jun 27, 1:48 PM CDTTornado WarningLCHJefferson Davis42 min
Jun 27, 2:22 PM CDTTornado WarningLCHCalcasieu, Jefferson Davis38 min
Jun 27, 2:52 PM CDTTornado WarningLCHJefferson Davis38 min
Jul 24, 3:19 PM CDTTornado WarningLCHCameron17 min
Oct 3, 1:40 AM CDTTornado WarningLCHAvoyelles35 min
Oct 13, 9:01 AM CDTTornado WarningSHVDe Soto, Red River29 min
Oct 13, 11:25 AM CDTTornado WarningSHVOuachita20 min
Oct 13, 11:30 AM CDTTornado WarningJANMorehouse45 min
Oct 13, 12:07 PM CDTTornado WarningJANMorehouse, West Carroll53 min
Oct 13, 12:09 PM CDTTornado WarningJANMorehouse, Richland, West Carroll66 min
Oct 13, 12:41 PM CDTTornado WarningJANEast Carroll, West Carroll64 min
Oct 13, 12:42 PM CDTTornado WarningJANEast Carroll48 min
Oct 13, 4:45 PM CDTTornado WarningLIXTangipahoa, Washington45 min
Oct 13, 5:05 PM CDTTornado WarningLIXSaint Charles10 min
Nov 16, 12:19 PM CSTTornado WarningLCHAcadia41 min
Nov 16, 12:52 PM CSTTornado WarningLCHAcadia, Saint Landry38 min
Nov 16, 8:06 PM CSTTornado WarningLIXLivingston, Saint Helena, Tangipahoa24 min
Nov 16, 8:28 PM CSTTornado WarningLIXLivingston, Saint Helena, Tangipahoa47 min
Nov 16, 9:15 PM CSTTornado WarningLIXTangipahoa, Washington30 min
Nov 16, 9:16 PM CSTTornado WarningLIXEast Baton Rouge, Livingston29 min
Nov 16, 9:43 PM CSTTornado WarningLIXWashington47 min
Nov 16, 9:58 PM CSTTornado WarningLIXLivingston, Tangipahoa32 min
Dec 23, 9:06 AM CSTTornado WarningLCHAcadia, Lafayette, Vermilion24 min
Dec 23, 9:29 AM CSTTornado WarningLCHLafayette, Saint Martin, Vermilion46 min
Dec 23, 10:29 AM CSTTornado WarningLCHAllen, Beauregard31 min
Dec 23, 10:33 AM CSTTornado WarningLIXWest Feliciana27 min
Dec 23, 10:52 AM CSTTornado WarningLIXEast Baton Rouge, East Feliciana, Saint Helena, West Feliciana23 min
Dec 23, 11:28 AM CSTTornado WarningLIXEast Feliciana47 min
Dec 23, 1:02 PM CSTTornado WarningLIXLivingston, Saint Helena, Tangipahoa28 min
Dec 23, 1:22 PM CSTTornado WarningLIXTangipahoa, Washington23 min
Dec 23, 1:38 PM CSTTornado WarningLIXWashington37 min
Dec 23, 3:42 PM CSTTornado WarningLIXAscension, Assumption, Saint James48 min
Dec 23, 4:23 PM CSTTornado WarningLIXSaint John the Baptist22 min
Dec 27, 1:12 PM CSTTornado WarningSHVDe Soto, Sabine33 min
Dec 27, 3:40 PM CSTTornado WarningLCHRapides, Vernon35 min

By county

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

2 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordThe radar archive20132015

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.