Alert archive / Louisiana / Tornado Warnings

Tornado Warnings in Louisiana, 2013

107 tornado 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 tornado warnings reaches back to 1986.

Tornado Warnings by county

Each county as a circle sized by its count in 2013. Tap one for its archive.

Tornado Warnings: 107
Busiest month: February24 tornado warnings
Busiest day: January 30, 201311 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.

16 of 107 tornado warnings covering Louisiana in 2013 had a tornado report inside them; 21 of 42 tornado reports fell inside a warning, on average 11 minutes after it went out.

Louisiana, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	107	16	85%	42	50%	11 min

Each office's whole area, 2013

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Shreveport, LA: tornado warnings	47	12	74%	31	74%	14 min
NWS Jackson, MS: tornado warnings	80	23	71%	57	81%	18 min
NWS Lake Charles, LA: tornado warnings	21	4	81%	14	43%	13 min
NWS New Orleans, LA: tornado warnings	54	2	96%	14	14%	10 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.

Issued	Product	Office	Counties	Lasted
Jan 10, 4:00 AM CST	Tornado Warning	LCH	Avoyelles, Evangeline, Saint Landry	30 min
Jan 10, 4:34 AM CST	Tornado Warning	LCH	Evangeline, Saint Landry	26 min
Jan 10, 5:04 AM CST	Tornado Warning	LCH	Avoyelles, Saint Landry	26 min
Jan 10, 6:45 AM CST	Tornado Warning	JAN	Concordia	45 min
Jan 10, 7:46 AM CST	Tornado Warning	LIX	East Baton Rouge, Iberville	29 min
Jan 10, 7:50 AM CST	Tornado Warning	LIX	Ascension, East Baton Rouge	25 min
Jan 10, 8:15 AM CST	Tornado Warning	LIX	Ascension, East Baton Rouge, Livingston	30 min
Jan 10, 10:00 AM CST	Tornado Warning	LIX	Lafourche, Terrebonne	30 min
Jan 10, 11:18 AM CST	Tornado Warning	LIX	Plaquemines, Saint Bernard	27 min
Jan 13, 2:21 PM CST	Tornado Warning	LIX	Tangipahoa	24 min
Jan 13, 2:32 PM CST	Tornado Warning	LIX	Tangipahoa	16 min
Jan 29, 8:04 PM CST	Tornado Warning	SHV	Caldwell, Grant, Jackson, LaSalle, Winn	41 min
Jan 29, 8:08 PM CST	Tornado Warning	SHV	Union	37 min
Jan 29, 8:29 PM CST	Tornado Warning	SHV	Ouachita, Union	31 min
Jan 29, 8:38 PM CST	Tornado Warning	SHV	Caldwell, Ouachita	37 min
Jan 29, 8:43 PM CST	Tornado Warning	JAN	Morehouse, Richland	62 min
Jan 29, 8:47 PM CST	Tornado Warning	JAN	Morehouse	58 min
Jan 29, 9:07 PM CST	Tornado Warning	SHV	Caldwell, Jackson, Ouachita, Union	38 min
Jan 29, 9:22 PM CST	Tornado Warning	JAN	East Carroll, Morehouse, West Carroll	38 min
Jan 29, 9:50 PM CST	Tornado Warning	JAN	Morehouse	40 min
Jan 29, 10:18 PM CST	Tornado Warning	JAN	Richland	42 min
Jan 29, 10:48 PM CST	Tornado Warning	JAN	East Carroll, West Carroll	42 min
Feb 7, 3:48 AM CST	Tornado Warning	LIX	Plaquemines	27 min
Feb 10, 1:37 PM CST	Tornado Warning	LIX	West Feliciana	38 min
Feb 10, 2:22 PM CST	Tornado Warning	LIX	Washington	8 min
Feb 10, 2:30 PM CST	Tornado Warning	LIX	Saint Tammany, Tangipahoa, Washington	30 min
Feb 10, 2:59 PM CST	Tornado Warning	LIX	Washington	46 min
Feb 10, 4:37 PM CST	Tornado Warning	LIX	Tangipahoa, Washington	38 min
Feb 18, 2:43 PM CST	Tornado Warning	SHV	Bienville, De Soto, Red River	47 min
Feb 18, 6:04 PM CST	Tornado Warning	SHV	Bossier, Caddo	41 min
Feb 18, 6:29 PM CST	Tornado Warning	SHV	Caddo, De Soto	46 min
Feb 18, 6:43 PM CST	Tornado Warning	SHV	De Soto	47 min
Feb 21, 1:03 PM CST	Tornado Warning	LCH	Allen, Evangeline	42 min
Feb 21, 2:22 PM CST	Tornado Warning	SHV	Sabine	23 min
Feb 21, 2:53 PM CST	Tornado Warning	LCH	Vernon	22 min
Feb 21, 3:06 PM CST	Tornado Warning	SHV	Natchitoches	24 min
Feb 21, 5:02 PM CST	Tornado Warning	JAN	Concordia, Tensas	43 min
Feb 25, 1:16 PM CST	Tornado Warning	LCH	Beauregard	29 min
Feb 25, 1:44 PM CST	Tornado Warning	LCH	Allen, Beauregard, Vernon	31 min
Feb 25, 1:47 PM CST	Tornado Warning	SHV	Bienville, Natchitoches, Red River	28 min
Feb 25, 2:13 PM CST	Tornado Warning	SHV	Bienville, Natchitoches, Red River	47 min
Feb 25, 2:33 PM CST	Tornado Warning	SHV	Bienville, Jackson, Lincoln	42 min
Feb 25, 3:00 PM CST	Tornado Warning	SHV	Claiborne, Lincoln, Union	45 min
Feb 25, 5:40 PM CST	Tornado Warning	LIX	Jefferson, Plaquemines	35 min
Feb 25, 6:58 PM CST	Tornado Warning	LIX	Jefferson, Plaquemines	32 min
Feb 25, 7:12 PM CST	Tornado Warning	LIX	Saint Bernard	48 min
Mar 18, 1:42 PM CDT	Tornado Warning	JAN	Morehouse, West Carroll	48 min
Mar 30, 1:49 PM CDT	Tornado Warning	SHV	Bienville, Caldwell, Jackson, Winn	41 min
Mar 30, 3:23 PM CDT	Tornado Warning	SHV	De Soto, Natchitoches, Red River, Sabine	37 min
Apr 11, 12:07 PM CDT	Tornado Warning	LIX	Saint Tammany, Tangipahoa	23 min
Apr 11, 12:46 PM CDT	Tornado Warning	LIX	Saint Tammany, Washington	29 min
Apr 11, 1:09 PM CDT	Tornado Warning	LIX	Saint Tammany	36 min
Apr 14, 5:41 AM CDT	Tornado Warning	LIX	Jefferson, Plaquemines	34 min
Apr 14, 6:11 AM CDT	Tornado Warning	LIX	Plaquemines	49 min
Apr 14, 8:27 AM CDT	Tornado Warning	LIX	Saint Bernard	33 min
Apr 18, 2:25 PM CDT	Tornado Warning	SHV	Bienville, Jackson, Natchitoches, Red River, Winn	35 min
Apr 18, 2:56 PM CDT	Tornado Warning	SHV	Caldwell, Jackson, Ouachita, Winn	34 min
Apr 18, 3:45 PM CDT	Tornado Warning	SHV	Caldwell, Ouachita	45 min
Apr 18, 3:55 PM CDT	Tornado Warning	JAN	Franklin, Richland	65 min
Apr 18, 4:45 PM CDT	Tornado Warning	JAN	East Carroll, West Carroll	60 min
Apr 18, 4:59 PM CDT	Tornado Warning	JAN	East Carroll, Franklin, Madison	61 min
Apr 24, 9:06 AM CDT	Tornado Warning	LIX	East Baton Rouge, Iberville, West Baton Rouge	39 min
Apr 24, 9:43 AM CDT	Tornado Warning	LIX	Ascension, East Baton Rouge, Iberville	47 min
Apr 24, 10:58 AM CDT	Tornado Warning	LIX	Saint John the Baptist	47 min
Apr 24, 11:28 AM CDT	Tornado Warning	LIX	Lafourche, Terrebonne	47 min
Apr 24, 11:52 AM CDT	Tornado Warning	LIX	Jefferson, Orleans	23 min
Apr 24, 12:04 PM CDT	Tornado Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	26 min
Apr 24, 12:27 PM CDT	Tornado Warning	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	48 min
Apr 24, 12:35 PM CDT	Tornado Warning	LIX	Jefferson, Lafourche	40 min
Apr 27, 8:32 PM CDT	Tornado Warning	SHV	Bienville	43 min
May 1, 10:56 AM CDT	Tornado Warning	LIX	Lafourche	34 min
May 9, 11:40 PM CDT	Tornado Warning	LCH	Beauregard	35 min
May 10, 12:18 AM CDT	Tornado Warning	LCH	Allen, Beauregard	27 min
May 10, 2:02 AM CDT	Tornado Warning	JAN	Catahoula, Concordia	43 min
May 10, 6:36 AM CDT	Tornado Warning	LIX	Saint John the Baptist	24 min
May 10, 6:40 AM CDT	Tornado Warning	LIX	Saint Tammany	35 min
May 10, 7:36 AM CDT	Tornado Warning	LIX	Orleans, Saint Tammany	24 min
May 16, 2:29 PM CDT	Tornado Warning	SHV	Caddo, De Soto	31 min
May 16, 2:57 PM CDT	Tornado Warning	SHV	Bossier, Caddo, De Soto	33 min
May 16, 3:27 PM CDT	Tornado Warning	SHV	Bienville, Bossier, Caddo, De Soto, Red River	48 min
May 16, 4:08 PM CDT	Tornado Warning	SHV	Bienville, Natchitoches, Red River	22 min
May 16, 4:47 PM CDT	Tornado Warning	SHV	Natchitoches, Winn	28 min
May 16, 5:14 PM CDT	Tornado Warning	SHV	Natchitoches, Winn	46 min
May 16, 7:49 PM CDT	Tornado Warning	SHV	Union	56 min
May 16, 9:00 PM CDT	Tornado Warning	JAN	Morehouse	60 min
May 22, 9:34 AM CDT	Tornado Warning	LIX	Lafourche, Terrebonne	26 min
Jul 3, 2:54 AM CDT	Tornado Warning	LIX	Plaquemines	36 min
Jul 3, 4:01 AM CDT	Tornado Warning	LIX	Plaquemines	29 min
Jul 27, 12:48 AM CDT	Tornado Warning	SHV	Bienville, Natchitoches, Red River	27 min
Sep 21, 4:38 AM CDT	Tornado Warning	LIX	Ascension, Livingston	37 min
Sep 21, 5:10 AM CDT	Tornado Warning	LIX	Livingston	35 min
Sep 21, 6:25 AM CDT	Tornado Warning	LIX	Washington	35 min
Oct 30, 7:33 PM CDT	Tornado Warning	LCH	Beauregard, Vernon	27 min
Oct 31, 9:43 AM CDT	Tornado Warning	LCH	Calcasieu	32 min
Oct 31, 9:56 AM CDT	Tornado Warning	LCH	Allen, Beauregard, Calcasieu, Jefferson Davis	34 min
Oct 31, 10:13 AM CDT	Tornado Warning	LCH	Calcasieu, Jefferson Davis	32 min
Oct 31, 10:17 AM CDT	Tornado Warning	LCH	Rapides	13 min
Oct 31, 10:27 AM CDT	Tornado Warning	LCH	Allen	33 min
Oct 31, 10:40 AM CDT	Tornado Warning	LCH	Calcasieu, Jefferson Davis	35 min
Oct 31, 11:00 AM CDT	Tornado Warning	LCH	Allen, Evangeline	30 min
Oct 31, 11:08 AM CDT	Tornado Warning	LCH	Acadia, Jefferson Davis	37 min
Oct 31, 11:41 AM CDT	Tornado Warning	LCH	Avoyelles, Evangeline, Saint Landry	34 min
Dec 21, 3:26 PM CST	Tornado Warning	SHV	Jackson, Lincoln, Ouachita, Union	49 min
Dec 21, 4:09 PM CST	Tornado Warning	JAN	Morehouse	36 min
Dec 21, 4:33 PM CST	Tornado Warning	LCH	Rapides, Vernon	27 min
Dec 21, 4:58 PM CST	Tornado Warning	LCH	Rapides	32 min
Dec 21, 5:17 PM CST	Tornado Warning	JAN	East Carroll	43 min

By county

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

11 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2012 2014

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.