Alert archive / Louisiana / Flash Flood Warnings
Flash Flood Warnings in Louisiana, 2019
136 flash flood warnings in 2019. 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 2019. Tap one for its archive.
- Flash Flood Warnings
- 136
- Busiest month
- May53 flash flood warnings
- Busiest day
- May 9, 201920 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.
74 of 136 flash flood warnings covering Louisiana in 2019 had a flash flood report inside them; 134 of 159 flash flood reports fell inside a warning, on average 98 minutes after it went out.
Louisiana, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 136 | 74 | 46% | 159 | 84% | 98 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: flash flood warnings | 117 | 78 | 33% | 278 | 81% | 88 min |
| NWS New Orleans, LA: flash flood warnings | 41 | 14 | 66% | 27 | 81% | 71 min |
| NWS Shreveport, LA: flash flood warnings | 47 | 32 | 32% | 90 | 82% | 115 min |
| NWS Lake Charles, LA: flash flood warnings | 99 | 56 | 43% | 131 | 91% | 97 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 3, 10:11 AM CST | Flash Flood Warning | SHV | Grant, Natchitoches, Sabine | 3 hr |
| Feb 20, 12:44 AM CST | Flash Flood Warning | JAN | East Carroll, West Carroll | 2 hr |
| Apr 4, 6:22 AM CDT | Flash Flood Warning | LCH | Calcasieu, Cameron, Jefferson Davis, St. Mary | 5 hr |
| Apr 4, 7:51 AM CDT | Flash Flood Warning | LCH | Acadia, Cameron, Jefferson Davis, Vermilion | 3 hr |
| Apr 4, 7:53 AM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Calcasieu, Jefferson Davis | 2 hr |
| Apr 4, 8:33 AM CDT | Flash Flood Warning | LCH | Iberia, Lafayette, Saint Martin, St. Mary, Vermilion | 117 min |
| Apr 4, 9:19 AM CDT | Flash Flood Warning | LCH | Calcasieu | 116 min |
| Apr 4, 10:44 AM CDT | Flash Flood Warning | LCH | Acadia, Iberia, Lafayette, Saint Martin, St. Mary, Vermilion | 2 hr |
| Apr 4, 11:58 AM CDT | Flash Flood Warning | LCH | Calcasieu | 2 hr |
| Apr 4, 12:42 PM CDT | Flash Flood Warning | LCH | Acadia, Cameron, Iberia, Jefferson Davis, Lafayette, Saint Martin and 2 more | 2 hr |
| Apr 6, 7:42 PM CDT | Flash Flood Warning | SHV | Jackson, Lincoln, Union | 3 hr |
| Apr 7, 5:14 PM CDT | Flash Flood Warning | LCH | Acadia, Avoyelles, Evangeline, Rapides, Saint Landry | 3 hr |
| Apr 7, 5:26 PM CDT | Flash Flood Warning | SHV | Claiborne, Webster | 6 hr |
| Apr 13, 11:11 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo, De Soto | 3 hr |
| Apr 13, 12:34 PM CDT | Flash Flood Warning | SHV | Bienville, Claiborne, De Soto, Lincoln, Natchitoches, Red River and 1 more | 5 hr |
| Apr 13, 2:09 PM CDT | Flash Flood Warning | JAN | Morehouse, West Carroll | 6 hr |
| Apr 13, 3:43 PM CDT | Flash Flood Warning | SHV | Caldwell, Claiborne, Jackson, Lincoln, Ouachita, Union and 1 more | 3 hr |
| Apr 13, 4:47 PM CDT | Flash Flood Warning | JAN | Catahoula, Franklin, Madison, Richland, Tensas | 3 hr |
| Apr 18, 12:02 PM CDT | Flash Flood Warning | LCH | Acadia, Evangeline, Jefferson Davis, Saint Landry | 3 hr |
| Apr 18, 12:35 PM CDT | Flash Flood Warning | LCH | Avoyelles | 2 hr |
| Apr 18, 1:22 PM CDT | Flash Flood Warning | LIX | Pointe Coupee, West Feliciana | 3 hr |
| Apr 18, 1:57 PM CDT | Flash Flood Warning | LCH | Lafayette, Saint Landry, Saint Martin | 3 hr |
| Apr 25, 7:00 AM CDT | Flash Flood Warning | JAN | Madison | 3 hr |
| May 8, 3:52 PM CDT | Flash Flood Warning | SHV | Webster | 3 hr |
| May 8, 5:18 PM CDT | Flash Flood Warning | SHV | Natchitoches, Sabine | 3 hr |
| May 8, 7:02 PM CDT | Flash Flood Warning | SHV | Grant, LaSalle | 3 hr |
| May 8, 11:59 PM CDT | Flash Flood Warning | SHV | Bossier, Caddo | 5 hr |
| May 9, 12:03 AM CDT | Flash Flood Warning | SHV | Bossier, Caddo, Claiborne, Webster | 5 hr |
| May 9, 4:31 AM CDT | Flash Flood Warning | JAN | Morehouse | 4 hr |
| May 9, 4:34 AM CDT | Flash Flood Warning | SHV | Grant, Natchitoches, Red River, Sabine, Winn | 4 hr |
| May 9, 7:48 AM CDT | Flash Flood Warning | JAN | Catahoula, Franklin, Madison, Tensas | 117 min |
| May 9, 11:31 AM CDT | Flash Flood Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis | 119 min |
| May 9, 12:02 PM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Rapides, Vernon | 6 hr |
| May 9, 12:13 PM CDT | Flash Flood Warning | LCH | Acadia, Evangeline, Saint Landry | 4 hr |
| May 9, 1:31 PM CDT | Flash Flood Warning | LCH | Acadia, Allen, Evangeline, Jefferson Davis | 3 hr |
| May 9, 2:23 PM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Calcasieu, Evangeline, Jefferson Davis | 2 hr |
| May 9, 2:52 PM CDT | Flash Flood Warning | LIX | East Baton Rouge, East Feliciana, Livingston, Saint Helena | 3 hr |
| May 9, 3:15 PM CDT | Flash Flood Warning | LCH | Acadia, Jefferson Davis, Vermilion | 4 hr |
| May 9, 3:30 PM CDT | Flash Flood Warning | LIX | Livingston, Saint Tammany, Tangipahoa, Washington | 6 hr |
| May 9, 3:59 PM CDT | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge | 8 hr |
| May 9, 4:17 PM CDT | Flash Flood Warning | LCH | Acadia, Allen, Beauregard, Calcasieu, Evangeline, Jefferson Davis and 1 more | 2 hr |
| May 9, 4:47 PM CDT | Flash Flood Warning | LCH | Lafayette, Saint Martin | 2 hr |
| May 9, 5:13 PM CDT | Flash Flood Warning | LCH | Acadia, Lafayette, Saint Landry | 2 hr |
| May 9, 5:44 PM CDT | Flash Flood Warning | LIX | East Baton Rouge, East Feliciana, Livingston, Saint Helena | 5 hr |
| May 9, 6:31 PM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin | 3 hr |
| May 9, 7:07 PM CDT | Flash Flood Warning | LCH | Acadia, Jefferson Davis, Saint Landry | 3 hr |
| May 9, 7:09 PM CDT | Flash Flood Warning | LCH | Lafayette, Saint Martin | 3 hr |
| May 9, 9:28 PM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin | 3 hr |
| May 9, 10:16 PM CDT | Flash Flood Warning | LCH | Lafayette, Saint Martin | 3 hr |
| May 10, 12:54 AM CDT | Flash Flood Warning | LCH | Calcasieu | 2 hr |
| May 10, 12:56 AM CDT | Flash Flood Warning | LCH | Beauregard | 2 hr |
| May 10, 2:27 AM CDT | Flash Flood Warning | LCH | Acadia, Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis | 3 hr |
| May 10, 2:43 AM CDT | Flash Flood Warning | LCH | Beauregard, Calcasieu | 3 hr |
| May 10, 6:15 AM CDT | Flash Flood Warning | LCH | Acadia, Evangeline, Iberia, Lafayette, Saint Landry, Saint Martin and 1 more | 2 hr |
| May 10, 7:58 AM CDT | Flash Flood Warning | LIX | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 3 more | 2 hr |
| May 11, 10:18 AM CDT | Flash Flood Warning | LIX | Washington | 3 hr |
| May 11, 1:10 PM CDT | Flash Flood Warning | LCH | Beauregard, Calcasieu | 2 hr |
| May 11, 1:13 PM CDT | Flash Flood Warning | LIX | Washington | 6 hr |
| May 11, 1:43 PM CDT | Flash Flood Warning | LCH | Allen, Calcasieu, Cameron, Jefferson Davis | 92 min |
| May 11, 2:33 PM CDT | Flash Flood Warning | LIX | East Feliciana, Pointe Coupee, West Baton Rouge, West Feliciana | 3 hr |
| May 11, 3:15 PM CDT | Flash Flood Warning | LCH | Acadia, Allen, Calcasieu, Cameron, Evangeline, Jefferson Davis and 4 more | 4 hr |
| May 11, 4:07 PM CDT | Flash Flood Warning | LIX | Iberville, Pointe Coupee, West Baton Rouge | 83 min |
| May 11, 4:34 PM CDT | Flash Flood Warning | SHV | Bienville, De Soto, Jackson, Natchitoches, Red River, Sabine and 1 more | 2 hr |
| May 11, 5:16 PM CDT | Flash Flood Warning | LIX | Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 3 more | 119 min |
| May 11, 6:36 PM CDT | Flash Flood Warning | LIX | Saint Tammany, Washington | 114 min |
| May 12, 12:47 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 118 min |
| May 12, 5:35 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles | 3 hr |
| May 12, 8:42 AM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Charles | 2 hr |
| May 19, 12:21 AM CDT | Flash Flood Warning | SHV | De Soto, Red River, Sabine | 3 hr |
| May 19, 1:26 AM CDT | Flash Flood Warning | SHV | Bienville, Natchitoches, Red River, Winn | 3 hr |
| May 19, 1:34 AM CDT | Flash Flood Warning | SHV | Sabine | 3 hr |
| May 19, 2:52 AM CDT | Flash Flood Warning | SHV | Grant, Natchitoches, Winn | 2 hr |
| May 19, 4:24 AM CDT | Flash Flood Warning | JAN | Catahoula, Concordia | 3 hr |
| May 19, 6:54 AM CDT | Flash Flood Warning | LCH | Acadia, Allen, Beauregard, Calcasieu, Jefferson Davis | 3 hr |
| May 19, 3:17 PM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Vernon | 118 min |
| May 19, 5:17 PM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Vernon | 118 min |
| Jun 5, 9:11 PM CDT | Flash Flood Warning | LCH | Calcasieu, Cameron | 4 hr |
| Jun 5, 11:17 PM CDT | Flash Flood Warning | LCH | Acadia, Cameron, Jefferson Davis, Vermilion | 4 hr |
| Jun 6, 3:04 AM CDT | Flash Flood Warning | LCH | Acadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 3 more | 3 hr |
| Jun 6, 5:38 AM CDT | Flash Flood Warning | LCH | Acadia, Evangeline, Lafayette, Saint Landry, Vermilion | 67 min |
| Jun 6, 6:27 AM CDT | Flash Flood Warning | LIX | East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana | 3 hr |
| Jun 6, 6:36 AM CDT | Flash Flood Warning | LCH | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 6 more | 114 min |
| Jun 6, 7:54 AM CDT | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge | 6 hr |
| Jun 6, 8:33 AM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin, St. Mary | 3 hr |
| Jun 6, 9:48 AM CDT | Flash Flood Warning | LIX | Livingston, Saint Helena, Tangipahoa | 3 hr |
| Jun 7, 12:02 PM CDT | Flash Flood Warning | LCH | Saint Martin, St. Mary | 118 min |
| Jun 23, 10:04 PM CDT | Flash Flood Warning | SHV | Union | 4 hr |
| Jul 10, 7:41 AM CDT | Flash Flood Warning | LIX | Orleans | 6 hr |
| Jul 10, 8:42 AM CDT | Flash Flood Warning | LIX | Jefferson | 3 hr |
| Jul 13, 8:00 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Plaquemines, Saint Bernard | 94 min |
| Jul 14, 6:54 AM CDT | Flash Flood Warning | LCH | Iberia, Lafayette, Saint Martin, St. Mary, Vermilion | 2 hr |
| Jul 14, 9:05 AM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin, St. Mary | 7 hr |
| Jul 14, 9:46 AM CDT | Flash Flood Warning | LCH | Iberia, Lafayette, Saint Martin, Vermilion | 3 hr |
| Jul 14, 12:35 PM CDT | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Saint Helena | 3 hr |
| Jul 14, 3:32 PM CDT | Flash Flood Warning | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Saint Helena and 1 more | 3 hr |
| Jul 14, 3:53 PM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin, St. Mary | 5 hr |
| Jul 14, 5:27 PM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Calcasieu, Evangeline, Jefferson Davis, Rapides and 1 more | 2 hr |
| Jul 14, 5:58 PM CDT | Flash Flood Warning | LCH | Cameron | 92 min |
| Jul 14, 7:24 PM CDT | Flash Flood Warning | LCH | Iberia, Lafayette, Saint Martin, St. Mary, Vermilion | 36 min |
| Jul 14, 7:28 PM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Calcasieu, Cameron, Evangeline, Jefferson Davis and 2 more | 3 hr |
| Jul 14, 9:50 PM CDT | Flash Flood Warning | LCH | Iberia, Saint Martin, St. Mary | 3 hr |
| Jul 14, 10:10 PM CDT | Flash Flood Warning | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, West Baton Rouge and 1 more | 3 hr |
| Jul 14, 10:28 PM CDT | Flash Flood Warning | LCH | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Evangeline and 2 more | 4 hr |
| Jul 15, 12:18 AM CDT | Flash Flood Warning | LCH | Beauregard, Calcasieu | 3 hr |
| Jul 15, 2:21 AM CDT | Flash Flood Warning | LCH | Allen, Beauregard, Calcasieu, Jefferson Davis | 8 hr |
| Jul 15, 2:26 AM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides, Saint Landry | 4 hr |
| Jul 15, 2:41 AM CDT | Flash Flood Warning | JAN | Concordia | 4 hr |
| Jul 15, 3:27 AM CDT | Flash Flood Warning | JAN | Catahoula, Concordia | 4 hr |
| Jul 15, 4:29 AM CDT | Flash Flood Warning | JAN | Concordia, Madison, Tensas | 3 hr |
| Jul 15, 6:13 AM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides, Saint Landry | 4 hr |
| Jul 15, 6:48 AM CDT | Flash Flood Warning | JAN | Catahoula, Concordia | 117 min |
| Jul 15, 9:58 AM CDT | Flash Flood Warning | LIX | Pointe Coupee, West Feliciana | 3 hr |
| Jul 15, 10:09 AM CDT | Flash Flood Warning | JAN | Concordia | 3 hr |
| Jul 15, 10:14 AM CDT | Flash Flood Warning | LCH | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Evangeline and 3 more | 5 hr |
| Jul 22, 1:56 PM CDT | Flash Flood Warning | LIX | Saint Charles | 106 min |
| Jul 22, 7:31 PM CDT | Flash Flood Warning | SHV | Caldwell | 3 hr |
| Jul 22, 10:47 PM CDT | Flash Flood Warning | JAN | East Carroll | 3 hr |
| Jul 23, 7:08 PM CDT | Flash Flood Warning | LIX | Jefferson, Lafourche, Saint Charles | 3 hr |
| Jul 30, 7:34 AM CDT | Flash Flood Warning | LCH | Avoyelles | 3 hr |
| Jul 30, 7:35 AM CDT | Flash Flood Warning | JAN | Catahoula, Concordia | 3 hr |
| Jul 30, 9:47 AM CDT | Flash Flood Warning | LCH | Avoyelles, Evangeline, Rapides, Saint Landry | 58 min |
| Jul 30, 10:35 AM CDT | Flash Flood Warning | SHV | Grant, LaSalle | 4 hr |
| Jul 30, 10:41 AM CDT | Flash Flood Warning | LCH | Allen, Avoyelles, Evangeline, Rapides, Saint Landry, Vernon | 2 hr |
| Jul 30, 12:45 PM CDT | Flash Flood Warning | LCH | Allen, Avoyelles, Evangeline, Rapides, Saint Landry, Vernon | 2 hr |
| Jul 30, 2:45 PM CDT | Flash Flood Warning | LCH | Allen, Avoyelles, Beauregard, Evangeline, Rapides, Saint Landry and 1 more | 3 hr |
| Aug 25, 3:24 PM CDT | Flash Flood Warning | LCH | Calcasieu | 3 hr |
| Aug 26, 3:47 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans, Saint Bernard | 118 min |
| Sep 19, 8:53 AM CDT | Flash Flood Warning | LCH | Beauregard, Calcasieu | 7 hr |
| Sep 19, 10:29 AM CDT | Flash Flood Warning | LCH | Cameron | 6 hr |
| Sep 20, 8:45 AM CDT | Flash Flood Warning | LCH | Calcasieu, Cameron | 3 hr |
| Sep 20, 11:43 AM CDT | Flash Flood Warning | LCH | Calcasieu, Cameron | 3 hr |
| Oct 10, 6:57 PM CDT | Flash Flood Warning | LIX | Saint Charles | 3 hr |
| Oct 25, 11:04 PM CDT | Flash Flood Warning | LIX | Terrebonne | 3 hr |
| Oct 26, 1:42 AM CDT | Flash Flood Warning | LIX | Assumption, Lafourche, Saint James, Saint John the Baptist, Terrebonne | 3 hr |
| Oct 26, 2:48 AM CDT | Flash Flood Warning | LIX | Lafourche, Terrebonne | 3 hr |
| Oct 26, 2:56 AM CDT | Flash Flood Warning | LIX | Ascension, Saint Charles, Saint James, Saint John the Baptist | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Calcasieu Parish26
- Jefferson Davis Parish23
- Acadia Parish22
- Allen Parish22
- Evangeline Parish22
- Beauregard Parish21
- Saint Martin Parish20
- Saint Landry Parish19
- Cameron Parish15
- Lafayette Parish15
- Vermilion Parish14
- Iberia Parish13
- Avoyelles Parish12
- Rapides Parish12
- St. Mary Parish11
- East Baton Rouge Parish10
- Livingston Parish10
- Iberville Parish9
- West Baton Rouge Parish9
- Pointe Coupee Parish8
- Vernon Parish8
- Natchitoches Parish7
- West Feliciana Parish7
- East Feliciana Parish7
- Ascension Parish7
- Jefferson Parish7
- Concordia Parish7
- Sabine Parish6
- Catahoula Parish6
- Saint Helena Parish6
- Orleans Parish6
- Saint Charles Parish6
- Grant Parish5
- Red River Parish5
- Winn Parish5
- Claiborne Parish4
- Webster Parish4
- De Soto Parish4
- Madison Parish4
- Washington Parish4
24 more counties
- Assumption Parish4
- Saint Bernard Parish4
- Jackson Parish3
- Lincoln Parish3
- Union Parish3
- Bossier Parish3
- Caddo Parish3
- Bienville Parish3
- Tensas Parish3
- Plaquemines Parish3
- Lafourche Parish3
- Terrebonne Parish3
- East Carroll Parish2
- West Carroll Parish2
- Morehouse Parish2
- Caldwell Parish2
- Franklin Parish2
- LaSalle Parish2
- Saint Tammany Parish2
- Tangipahoa Parish2
- Saint James Parish2
- Saint John the Baptist Parish2
- Ouachita Parish1
- Richland Parish1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.