Alert archive / Louisiana / Flash Flood Warnings
Flash Flood Warnings in Louisiana, 2022
141 flash flood warnings in 2022. 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 2022. Tap one for its archive.
- Flash Flood Warnings
- 141
- Busiest month
- August39 flash flood warnings
- Busiest day
- December 14, 202218 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.
54 of 141 flash flood warnings covering Louisiana in 2022 had a flash flood report inside them; 94 of 112 flash flood reports fell inside a warning, on average 70 minutes after it went out.
Louisiana, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 141 | 54 | 62% | 112 | 84% | 70 min |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: flash flood warnings | 85 | 44 | 48% | 195 | 88% | 85 min |
| NWS Shreveport, LA: flash flood warnings | 29 | 16 | 45% | 48 | 73% | 143 min |
| NWS Lake Charles, LA: flash flood warnings | 59 | 20 | 66% | 49 | 90% | 73 min |
| NWS New Orleans, LA: flash flood warnings | 83 | 33 | 60% | 75 | 88% | 59 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 19, 11:21 PM CST | Flash Flood Warning | LCH | Beauregard, Calcasieu | 3 hr |
| Feb 3, 11:29 AM CST | Flash Flood Warning | LIX | Saint Tammany, Tangipahoa, Washington | 3 hr |
| Feb 3, 11:36 AM CST | Flash Flood Warning | LIX | Washington | 5 hr |
| Feb 3, 12:28 PM CST | Flash Flood Warning | LIX | Saint Charles, Saint James, Saint John the Baptist | 3 hr |
| Feb 3, 12:30 PM CST | Flash Flood Warning | LIX | Lafourche, Terrebonne | 3 hr |
| Feb 3, 1:13 PM CST | Flash Flood Warning | LIX | Saint Tammany | 4 hr |
| Feb 3, 2:03 PM CST | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 3 hr |
| Feb 3, 2:19 PM CST | Flash Flood Warning | LIX | Saint Tammany | 3 hr |
| Feb 3, 3:56 PM CST | Flash Flood Warning | LIX | Saint Charles, Saint James, Saint John the Baptist | 2 hr |
| Mar 22, 2:12 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo, Claiborne, Webster | 5 hr |
| Mar 22, 3:25 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo, De Soto | 110 min |
| Mar 22, 4:58 AM CDT | Flash Flood Warning | SHV | Bienville, Bossier, Caddo, De Soto, Red River, Sabine | 3 hr |
| Mar 22, 10:42 AM CDT | Flash Flood Warning | LCH | Allen, Avoyelles, Beauregard, Evangeline, Rapides, Vernon | 3 hr |
| Mar 22, 12:29 PM CDT | Flash Flood Warning | LCH | Acadia, Allen, Avoyelles, Evangeline, Jefferson Davis, Rapides and 1 more | 3 hr |
| Mar 22, 1:14 PM CDT | Flash Flood Warning | LIX | East Feliciana, Pointe Coupee, West Feliciana | 3 hr |
| Mar 22, 1:43 PM CDT | Flash Flood Warning | LCH | Acadia, Avoyelles, Lafayette, Saint Landry, Saint Martin | 3 hr |
| Mar 22, 3:06 PM CDT | Flash Flood Warning | LIX | East Feliciana, Saint Helena, Tangipahoa | 3 hr |
| Mar 22, 4:20 PM CDT | Flash Flood Warning | LIX | East Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena, West Baton Rouge | 100 min |
| Mar 22, 7:29 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Bernard | 58 min |
| Mar 30, 5:55 PM CDT | Flash Flood Warning | LIX | East Baton Rouge, West Baton Rouge | 80 min |
| Mar 30, 6:08 PM CDT | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston | 77 min |
| Mar 30, 7:23 PM CDT | Flash Flood Warning | LIX | Saint Tammany, Tangipahoa | 65 min |
| Mar 30, 8:18 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Bernard, Saint Charles | 68 min |
| Apr 5, 9:24 AM CDT | Flash Flood Warning | LIX | Saint Helena | 2 hr |
| Apr 5, 10:11 AM CDT | Flash Flood Warning | LIX | Saint Helena, Tangipahoa, Washington | 3 hr |
| Apr 5, 12:04 PM CDT | Flash Flood Warning | LIX | Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington | 82 min |
| Apr 12, 11:37 PM CDT | Flash Flood Warning | SHV | Bienville, De Soto, Natchitoches, Red River, Sabine, Winn | 3 hr |
| Apr 13, 1:02 AM CDT | Flash Flood Warning | SHV | Caldwell, Grant, LaSalle, Natchitoches, Sabine, Winn | 3 hr |
| Apr 13, 11:36 PM CDT | Flash Flood Warning | LIX | Saint Charles, Saint John the Baptist | 109 min |
| Apr 14, 12:00 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 90 min |
| May 1, 1:42 PM CDT | Flash Flood Warning | LCH | Iberia, Vermilion | 3 hr |
| May 1, 4:04 PM CDT | Flash Flood Warning | LCH | Jefferson Davis | 3 hr |
| May 13, 3:44 PM CDT | Flash Flood Warning | LIX | Ascension, Assumption, Iberville, Saint James | 3 hr |
| May 13, 3:47 PM CDT | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Livingston, West Baton Rouge | 3 hr |
| May 13, 4:14 PM CDT | Flash Flood Warning | LIX | Iberville, Pointe Coupee, West Baton Rouge | 2 hr |
| May 13, 5:16 PM CDT | Flash Flood Warning | LCH | Iberia, St. Mary | 119 min |
| May 14, 6:50 PM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin | 3 hr |
| May 14, 7:45 PM CDT | Flash Flood Warning | LCH | Saint Martin | 3 hr |
| May 21, 5:48 PM CDT | Flash Flood Warning | LIX | Ascension, Assumption, Iberville, Saint James | 2 hr |
| May 22, 9:12 AM CDT | Flash Flood Warning | LCH | Acadia, Jefferson Davis | 93 min |
| May 22, 10:23 PM CDT | Flash Flood Warning | LIX | Ascension, Assumption, Saint James | 3 hr |
| May 24, 1:49 AM CDT | Flash Flood Warning | LIX | Saint Tammany | 4 hr |
| May 25, 12:03 PM CDT | Flash Flood Warning | LIX | Saint Charles, Saint John the Baptist | 4 hr |
| May 25, 1:34 PM CDT | Flash Flood Warning | LIX | Saint Tammany | 3 hr |
| May 25, 1:38 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles | 3 hr |
| Jun 9, 7:19 PM CDT | Flash Flood Warning | LIX | Saint Helena | 3 hr |
| Jun 10, 9:11 AM CDT | Flash Flood Warning | LIX | Orleans, Saint Bernard | 6 hr |
| Jun 10, 10:34 AM CDT | Flash Flood Warning | JAN | Morehouse | 107 min |
| Jun 10, 11:34 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 3 hr |
| Jun 30, 12:47 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles | 78 min |
| Jun 30, 2:15 PM CDT | Flash Flood Warning | LIX | Lafourche, Saint Charles, Saint John the Baptist | 82 min |
| Jun 30, 3:41 PM CDT | Flash Flood Warning | LIX | Livingston, Saint Helena, Tangipahoa | 78 min |
| Jul 1, 10:54 AM CDT | Flash Flood Warning | LCH | Cameron | 5 hr |
| Jul 2, 5:21 AM CDT | Flash Flood Warning | SHV | Bienville | 3 hr |
| Jul 3, 11:35 AM CDT | Flash Flood Warning | SHV | Claiborne, Union | 3 hr |
| Jul 5, 11:30 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 3 hr |
| Jul 12, 4:44 PM CDT | Flash Flood Warning | LIX | East Baton Rouge, Iberville, West Baton Rouge | 91 min |
| Jul 20, 5:09 PM CDT | Flash Flood Warning | LIX | Orleans, Saint Bernard | 3 hr |
| Jul 20, 6:11 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 109 min |
| Jul 22, 4:59 AM CDT | Flash Flood Warning | LIX | Tangipahoa | 2 hr |
| Jul 22, 6:35 AM CDT | Flash Flood Warning | LIX | East Baton Rouge, West Baton Rouge | 2 hr |
| Jul 26, 2:09 PM CDT | Flash Flood Warning | LIX | East Baton Rouge | 108 min |
| Jul 26, 2:49 PM CDT | Flash Flood Warning | LIX | East Baton Rouge | 68 min |
| Jul 27, 2:30 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 90 min |
| Jul 28, 3:09 PM CDT | Flash Flood Warning | LIX | East Baton Rouge | 3 hr |
| Jul 30, 12:16 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Bernard | 64 min |
| Aug 3, 9:09 AM CDT | Flash Flood Warning | LIX | East Baton Rouge, West Baton Rouge | 2 hr |
| Aug 3, 9:41 AM CDT | Flash Flood Warning | LIX | Iberville, Pointe Coupee, West Baton Rouge | 2 hr |
| Aug 3, 11:33 AM CDT | Flash Flood Warning | LCH | Avoyelles, Saint Landry, Saint Martin | 3 hr |
| Aug 3, 12:06 PM CDT | Flash Flood Warning | LCH | Iberia, Lafayette, Saint Martin | 114 min |
| Aug 3, 12:24 PM CDT | Flash Flood Warning | LCH | Iberia, Lafayette, Vermilion | 3 hr |
| Aug 3, 12:46 PM CDT | Flash Flood Warning | LCH | Saint Landry | 119 min |
| Aug 3, 1:57 PM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides, Saint Landry | 3 hr |
| Aug 3, 3:12 PM CDT | Flash Flood Warning | LCH | Allen, Avoyelles, Evangeline, Rapides, Saint Landry | 3 hr |
| Aug 3, 5:06 PM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides, Saint Landry | 114 min |
| Aug 8, 12:57 PM CDT | Flash Flood Warning | LIX | Jefferson | 2 hr |
| Aug 9, 1:55 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 95 min |
| Aug 9, 3:13 PM CDT | Flash Flood Warning | JAN | East Carroll | 4 hr |
| Aug 10, 11:34 AM CDT | Flash Flood Warning | SHV | Caldwell, Jackson, Ouachita | 86 min |
| Aug 10, 12:17 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 3 hr |
| Aug 10, 12:58 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines | 2 hr |
| Aug 10, 2:05 PM CDT | Flash Flood Warning | LIX | East Baton Rouge | 2 hr |
| Aug 10, 3:23 PM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin, Vermilion | 3 hr |
| Aug 11, 2:14 PM CDT | Flash Flood Warning | LIX | East Baton Rouge | 91 min |
| Aug 18, 5:08 AM CDT | Flash Flood Warning | JAN | Catahoula, Franklin, Tensas | 3 hr |
| Aug 18, 5:53 AM CDT | Flash Flood Warning | JAN | Concordia, Tensas | 3 hr |
| Aug 19, 5:55 PM CDT | Flash Flood Warning | LIX | East Baton Rouge, West Baton Rouge | 40 min |
| Aug 22, 11:36 PM CDT | Flash Flood Warning | SHV | Bossier, Caddo, De Soto | 3 hr |
| Aug 23, 3:20 PM CDT | Flash Flood Warning | JAN | Catahoula, Franklin | 3 hr |
| Aug 24, 5:03 AM CDT | Flash Flood Warning | JAN | Catahoula, Franklin, Madison, Tensas | 6 hr |
| Aug 24, 5:14 AM CDT | Flash Flood Warning | SHV | Grant, LaSalle | 3 hr |
| Aug 24, 8:15 AM CDT | Flash Flood Warning | JAN | Catahoula | 3 hr |
| Aug 24, 9:26 AM CDT | Flash Flood Warning | LCH | Avoyelles, Rapides, Vernon | 3 hr |
| Aug 24, 9:49 AM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Calcasieu | 4 hr |
| Aug 24, 10:47 AM CDT | Flash Flood Warning | LCH | Calcasieu, Cameron, Jefferson Davis | 3 hr |
| Aug 24, 1:25 PM CDT | Flash Flood Warning | LCH | Calcasieu | 3 hr |
| Aug 24, 3:50 PM CDT | Flash Flood Warning | JAN | Franklin, Richland | 2 hr |
| Aug 24, 4:31 PM CDT | Flash Flood Warning | JAN | East Carroll, Madison | 119 min |
| Aug 25, 6:38 PM CDT | Flash Flood Warning | LCH | Iberia, Lafayette, Saint Martin | 3 hr |
| Aug 25, 7:00 PM CDT | Flash Flood Warning | LIX | Pointe Coupee | 3 hr |
| Aug 25, 7:28 PM CDT | Flash Flood Warning | LCH | Acadia, Lafayette | 3 hr |
| Aug 26, 5:50 AM CDT | Flash Flood Warning | JAN | Concordia | 3 hr |
| Aug 26, 8:43 AM CDT | Flash Flood Warning | LIX | Pointe Coupee | 82 min |
| Aug 26, 4:41 PM CDT | Flash Flood Warning | LCH | Calcasieu | 3 hr |
| Aug 26, 6:17 PM CDT | Flash Flood Warning | LIX | East Feliciana | 73 min |
| Sep 3, 10:31 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Bernard | 34 min |
| Sep 3, 12:54 PM CDT | Flash Flood Warning | LCH | Acadia, Lafayette, Saint Landry, Saint Martin | 3 hr |
| Sep 3, 2:01 PM CDT | Flash Flood Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis | 119 min |
| Sep 3, 2:56 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 3 hr |
| Sep 3, 3:56 PM CDT | Flash Flood Warning | LCH | Lafayette, Saint Landry, Saint Martin | 3 hr |
| Sep 3, 6:35 PM CDT | Flash Flood Warning | SHV | Natchitoches | 3 hr |
| Sep 3, 7:50 PM CDT | Flash Flood Warning | JAN | Franklin, Tensas | 107 min |
| Nov 24, 4:50 PM CST | Flash Flood Warning | LCH | Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis | 2 hr |
| Nov 30, 3:36 AM CST | Flash Flood Warning | LIX | Saint Tammany, Tangipahoa, Washington | 2 hr |
| Dec 10, 9:48 PM CST | Flash Flood Warning | SHV | Sabine | 3 hr |
| Dec 11, 1:49 AM CST | Flash Flood Warning | LCH | Acadia, Evangeline, Saint Landry | 3 hr |
| Dec 11, 2:40 AM CST | Flash Flood Warning | LCH | Avoyelles, Saint Landry | 2 hr |
| Dec 11, 4:26 AM CST | Flash Flood Warning | LCH | Acadia, Jefferson Davis, Saint Landry | 2 hr |
| Dec 11, 5:35 AM CST | Flash Flood Warning | LCH | Allen, Evangeline, Jefferson Davis, Saint Landry | 55 min |
| Dec 11, 6:28 AM CST | Flash Flood Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis, Saint Landry | 3 hr |
| Dec 13, 9:52 PM CST | Flash Flood Warning | JAN | Morehouse, West Carroll | 3 hr |
| Dec 14, 12:55 AM CST | Flash Flood Warning | JAN | East Carroll, Madison | 3 hr |
| Dec 14, 1:13 AM CST | Flash Flood Warning | LCH | Allen, Avoyelles, Rapides | 3 hr |
| Dec 14, 1:27 AM CST | Flash Flood Warning | JAN | Catahoula, Concordia | 3 hr |
| Dec 14, 2:01 AM CST | Flash Flood Warning | JAN | Tensas | 3 hr |
| Dec 14, 2:54 AM CST | Flash Flood Warning | LCH | Allen, Calcasieu, Jefferson Davis | 4 hr |
| Dec 14, 3:05 AM CST | Flash Flood Warning | JAN | Concordia | 3 hr |
| Dec 14, 3:35 AM CST | Flash Flood Warning | LCH | Allen, Avoyelles, Evangeline, Saint Landry | 3 hr |
| Dec 14, 4:25 AM CST | Flash Flood Warning | LCH | Acadia, Allen, Calcasieu, Evangeline, Jefferson Davis | 2 hr |
| Dec 14, 5:29 AM CST | Flash Flood Warning | LIX | Pointe Coupee, West Feliciana | 7 hr |
| Dec 14, 6:29 AM CST | Flash Flood Warning | LCH | Acadia, Allen, Avoyelles, Evangeline, Jefferson Davis, Saint Landry | 8 hr |
| Dec 14, 10:37 AM CST | Flash Flood Warning | JAN | Concordia | 3 hr |
| Dec 14, 12:10 PM CST | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Saint Helena, West Baton Rouge | 3 hr |
| Dec 14, 1:12 PM CST | Flash Flood Warning | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint James | 3 hr |
| Dec 14, 1:41 PM CST | Flash Flood Warning | LIX | Livingston, Saint Helena, Saint Tammany, Tangipahoa, Washington | 3 hr |
| Dec 14, 2:52 PM CST | Flash Flood Warning | LIX | Saint Tammany, Tangipahoa, Washington | 3 hr |
| Dec 14, 3:11 PM CST | Flash Flood Warning | LIX | Saint Charles, Saint John the Baptist | 2 hr |
| Dec 14, 4:23 PM CST | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Bernard, Saint Charles | 2 hr |
| Dec 30, 9:34 AM CST | Flash Flood Warning | LIX | Ascension, Lafourche, Saint Charles, Saint James, Saint John the Baptist | 3 hr |
| Dec 30, 9:46 AM CST | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 3 hr |
| Dec 30, 10:16 AM CST | Flash Flood Warning | LIX | East Baton Rouge, Livingston, Saint John the Baptist, Saint Tammany, Tangipahoa | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Orleans Parish20
- Jefferson Parish19
- Saint Landry Parish16
- East Baton Rouge Parish16
- Saint Bernard Parish13
- Allen Parish13
- Avoyelles Parish12
- Evangeline Parish12
- Jefferson Davis Parish12
- Saint Tammany Parish11
- Tangipahoa Parish11
- Saint Charles Parish11
- Acadia Parish11
- West Baton Rouge Parish10
- Saint Martin Parish9
- Saint Helena Parish9
- Livingston Parish9
- Calcasieu Parish8
- Saint John the Baptist Parish8
- Ascension Parish8
- Iberville Parish8
- Washington Parish7
- Saint James Parish7
- Plaquemines Parish7
- Rapides Parish7
- Pointe Coupee Parish7
- Lafayette Parish7
- Iberia Parish7
- Catahoula Parish5
- Franklin Parish5
- Tensas Parish5
- Concordia Parish5
- Beauregard Parish4
- Bossier Parish4
- Caddo Parish4
- De Soto Parish4
- Sabine Parish4
- East Feliciana Parish4
- Assumption Parish4
- Lafourche Parish3
23 more counties
- Bienville Parish3
- Natchitoches Parish3
- Vermilion Parish3
- Cameron Parish3
- East Carroll Parish3
- Madison Parish3
- Claiborne Parish2
- Red River Parish2
- Vernon Parish2
- West Feliciana Parish2
- Winn Parish2
- Caldwell Parish2
- Grant Parish2
- LaSalle Parish2
- Morehouse Parish2
- Terrebonne Parish1
- Webster Parish1
- St. Mary Parish1
- Union Parish1
- Jackson Parish1
- Ouachita Parish1
- Richland Parish1
- West Carroll Parish1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20212023
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.