Alert archive / Louisiana / Flash Flood Watches in 2021
Flash Flood Watch 1, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood watch at Mar 22, 2021, 12:37 PM CDT for 13 parishes in Louisiana; 5 counties in Mississippi. It took effect at Mar 23, 2021, 8:00 AM CDT. It was in force for 43 hr.
The area
The counties it named.
The facts
- Issued
- Mar 22, 2021, 12:37 PM CDT (17:37 UTC)
- In effect from
- Mar 23, 2021, 8:00 AM CDT
- Expired
- Mar 25, 2021, 3:23 AM CDT
- In force
- 43 hr
- Issued by
- NWS New Orleans, LA
- Flood severity
- None
Counties Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Pearl River County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 5.6 hours before the alert went out and 108 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
971 WGUS64 KLIX 221737 FFALIX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service New Orleans LA 1237 PM CDT Mon Mar 22 2021 .A cold front will move into the region Tuesday. This front will move very slowly through the area and is expected to stall over southeast Louisiana and coastal Mississippi. This front will remain over the area through Wednesday before lifting north Thursday with a cold front finally pushing through late Thursday or Thursday evening. Multiple rounds of moderate to heavy rain are expected with widespread 4 to 8 inches of rain with locally higher amounts possible. LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-230145- /O.NEW.KLIX.FF.A.0001.210323T1300Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension- Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche- St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Amite, Pascagoula, Raceland, Wakefield, Gloster, Waveland, Easleyville, McComb, McNeil, Montpelier, Livonia, Darlington, Gillsberg, Gulfport, Jackson, Spillman, Greensburg, Liberty, Port Allen, Diamondhead, Roseland, Hammond, Metairie, Salem, Boothville, Galliano, Chauvin, Kenner, St. Francisville, Enon, St. Martin, Clinton, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Dolorosa, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Centreville, Destrehan, Baton Rouge, New Roads, Lettsworth, Picayune, Paincourtville, Pointe A La Hache, Bay St. Louis, Leeville, Franklinton, Gautier, Slidell, Walker, Felps, Laplace, Woodville, Denham Springs, New Orleans, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Fort Adams, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Smithdale, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Port Sulphur, and Empire 1237 PM CDT Mon Mar 22 2021 ...FLASH FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY EVENING... The National Weather Service in New Orleans has issued a * Flash Flood Watch for portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Pointe Coupee, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge and West Feliciana. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson. * From Tuesday morning through Thursday evening * Multiple rounds of moderate to heavy rain is expected across southeast Louisiana along with southern and coastal Mississippi. This could lead to flash flooding. * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ CAB
8 follow-up statements
234 WGUS64 KLIX 230021 FFALIX Flood Watch National Weather Service New Orleans LA 721 PM CDT Mon Mar 22 2021 .A slow-moving cold front will move into the region Tuesday and will stall over southeast Louisiana and coastal Mississippi through Wednesday. It will lift north again Thursday and a cold front will finally push through late Thursday or Thursday evening. Multiple rounds of moderate to heavy rain are expected with widespread rainfall totals of 4 to 8 inches. Locally higher amounts will be possible. LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-231030- /O.CON.KLIX.FF.A.0001.210323T1300Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension- Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche- St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Amite, Pascagoula, Raceland, Wakefield, Gloster, Waveland, Easleyville, McComb, McNeil, Montpelier, Livonia, Darlington, Gillsberg, Gulfport, Jackson, Spillman, Greensburg, Liberty, Port Allen, Diamondhead, Roseland, Hammond, Metairie, Salem, Boothville, Galliano, Chauvin, Kenner, St. Francisville, Enon, St. Martin, Clinton, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Dolorosa, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Centreville, Destrehan, Baton Rouge, New Roads, Lettsworth, Picayune, Paincourtville, Pointe A La Hache, Bay St. Louis, Leeville, Franklinton, Gautier, Slidell, Walker, Felps, Laplace, Woodville, Denham Springs, New Orleans, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Fort Adams, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Smithdale, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Port Sulphur, and Empire 721 PM CDT Mon Mar 22 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY EVENING... The Flash Flood Watch continues for * Portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Pointe Coupee, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge and West Feliciana. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson. * From Tuesday morning through Thursday evening * Multiple rounds of moderate to heavy rain are expected across southeast Louisiana as well as soutwestern and coastal Mississippi. This could lead to flash flooding. * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ DM
253 WGUS64 KLIX 230842 FFALIX Flood Watch National Weather Service New Orleans LA 342 AM CDT Tue Mar 23 2021 .A slow-moving cold front will move into the region today and stall over southeast Louisiana and coastal Mississippi through Wednesday. It will lift north Thursday and a second cold front will finally push through late Thursday or Thursday evening. Multiple rounds of moderate to heavy rain are expected with widespread rainfall totals of 4 to 8 inches. Locally higher amounts will be possible. LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-232030- /O.CON.KLIX.FF.A.0001.210323T1300Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension- Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche- St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Amite, Pascagoula, Raceland, Wakefield, Gloster, Waveland, Easleyville, McComb, McNeil, Montpelier, Livonia, Darlington, Gillsberg, Gulfport, Jackson, Spillman, Greensburg, Liberty, Port Allen, Diamondhead, Roseland, Hammond, Metairie, Salem, Boothville, Galliano, Chauvin, Kenner, St. Francisville, Enon, St. Martin, Clinton, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Dolorosa, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Centreville, Destrehan, Baton Rouge, New Roads, Lettsworth, Picayune, Paincourtville, Pointe A La Hache, Bay St. Louis, Leeville, Franklinton, Gautier, Slidell, Walker, Felps, Laplace, Woodville, Denham Springs, New Orleans, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Fort Adams, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Smithdale, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Port Sulphur, and Empire 342 AM CDT Tue Mar 23 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 8 AM CDT THIS MORNING THROUGH THURSDAY EVENING... The Flash Flood Watch continues for * Portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Pointe Coupee, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge and West Feliciana. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson. * From 8 AM CDT this morning through Thursday evening * Multiple rounds of moderate to heavy rain are expected across southeast Louisiana as well as soutwestern and coastal Mississippi. This could lead to flash flooding. * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ TE
171 WGUS64 KLIX 231537 FFALIX Flood Watch National Weather Service New Orleans LA 1037 AM CDT Tue Mar 23 2021 .A slow-moving cold front will move into the region today and stall over southeast Louisiana and coastal Mississippi through Wednesday. It will lift north Thursday and a second cold front will finally push through late Thursday or Thursday evening. Multiple rounds of moderate to heavy rain are expected with widespread rainfall totals of 4 to 8 inches. Locally higher amounts will be possible. LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-232345- /O.CON.KLIX.FF.A.0001.000000T0000Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension- Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche- St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Amite, Pascagoula, Raceland, Wakefield, Gloster, Waveland, Easleyville, McComb, McNeil, Montpelier, Livonia, Darlington, Gillsberg, Gulfport, Jackson, Spillman, Greensburg, Liberty, Port Allen, Diamondhead, Roseland, Hammond, Metairie, Salem, Boothville, Galliano, Chauvin, Kenner, St. Francisville, Enon, St. Martin, Clinton, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Dolorosa, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Centreville, Destrehan, Baton Rouge, New Roads, Lettsworth, Picayune, Paincourtville, Pointe A La Hache, Bay St. Louis, Leeville, Franklinton, Gautier, Slidell, Walker, Felps, Laplace, Woodville, Denham Springs, New Orleans, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Fort Adams, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Smithdale, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Port Sulphur, and Empire 1037 AM CDT Tue Mar 23 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING... The Flash Flood Watch continues for * Portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Pointe Coupee, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge and West Feliciana. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson. * Through Thursday evening * * Multiple rounds of moderate to heavy rain are expected across southeast Louisiana as well as southwestern and coastal Mississippi. This could lead to flash flooding. * * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ GP
795 WGUS64 KLIX 232127 FFALIX Flood Watch National Weather Service New Orleans LA 427 PM CDT Tue Mar 23 2021 .A slow-moving cold front has stalled over the region today. It will lift northward as a warm front on Wednesday. A secondary cold front will move into the area on Thursday. The second cold front will finally push through late Thursday. Multiple rounds of moderate to heavy rain are expected with widespread rainfall totals of 4 to 8 inches. Locally higher amounts will be possible. LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-240530- /O.CON.KLIX.FF.A.0001.000000T0000Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension- Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche- St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Amite, Pascagoula, Raceland, Wakefield, Gloster, Waveland, Easleyville, McComb, McNeil, Montpelier, Livonia, Darlington, Gillsberg, Gulfport, Jackson, Spillman, Greensburg, Liberty, Port Allen, Diamondhead, Roseland, Hammond, Metairie, Salem, Boothville, Galliano, Chauvin, Kenner, St. Francisville, Enon, St. Martin, Clinton, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Dolorosa, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Centreville, Destrehan, Baton Rouge, New Roads, Lettsworth, Picayune, Paincourtville, Pointe A La Hache, Bay St. Louis, Leeville, Franklinton, Gautier, Slidell, Walker, Felps, Laplace, Woodville, Denham Springs, New Orleans, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Fort Adams, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Smithdale, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Port Sulphur, and Empire 427 PM CDT Tue Mar 23 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING... The Flash Flood Watch continues for * Portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Pointe Coupee, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge and West Feliciana. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson. * Through Thursday evening * * Multiple rounds of moderate to heavy rain are expected across southeast Louisiana as well as southwestern and coastal MS. Mississippi. This could lead to flash flooding. * * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ GP
957 WGUS64 KLIX 240944 FFALIX Flood Watch National Weather Service New Orleans LA 444 AM CDT Wed Mar 24 2021 .A slow-moving cold front has stalled near the Louisiana coast. It will lift northward as a warm front tonight. A secondary cold front will move into the area on Thursday. The second cold front will finally push through late Thursday. Additional rounds of moderate to heavy rain are expected to produce an additional 1 to 3 inches. Locally higher amounts will be possible. LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-242300- /O.CON.KLIX.FF.A.0001.000000T0000Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension- Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche- St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Amite, Pascagoula, Raceland, Wakefield, Gloster, Waveland, Easleyville, McComb, McNeil, Montpelier, Livonia, Darlington, Gillsberg, Gulfport, Jackson, Spillman, Greensburg, Liberty, Port Allen, Diamondhead, Roseland, Hammond, Metairie, Salem, Boothville, Galliano, Chauvin, Kenner, St. Francisville, Enon, St. Martin, Clinton, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Dolorosa, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Centreville, Destrehan, Baton Rouge, New Roads, Lettsworth, Picayune, Paincourtville, Pointe A La Hache, Bay St. Louis, Leeville, Franklinton, Gautier, Slidell, Walker, Felps, Laplace, Woodville, Denham Springs, New Orleans, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Fort Adams, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Smithdale, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Port Sulphur, and Empire 444 AM CDT Wed Mar 24 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING... The Flash Flood Watch continues for * Portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Pointe Coupee, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge and West Feliciana. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson. * Through Thursday evening * Multiple rounds of moderate to heavy rain are expected across southeast Louisiana as well as southwestern and coastal MS. Mississippi. This could lead to flash flooding. * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ BW
507 WGUS64 KLIX 241703 FFALIX Flood Watch National Weather Service New Orleans LA 1203 PM CDT Wed Mar 24 2021 .A slow moving cold front has stalled near the Louisiana coast. It will lift northward as a warm front tonight. A secondary cold front will move into the area on Thursday. The second cold front will finally push through late Thursday. Additional rounds of moderate to heavy rain are expected to produce an additional 1 to 3 inches. Locally higher amounts will be possible. LAZ034>036-MSZ068-069-241815- /O.CAN.KLIX.FF.A.0001.000000T0000Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-Wilkinson-Amite- Including the cities of New Roads, Lettsworth, Livonia, Spillman, St. Francisville, Wakefield, Jackson, Clinton, Felps, Centreville, Dolorosa, Fort Adams, Woodville, Gillsberg, Gloster, Smithdale, and Liberty 1203 PM CDT Wed Mar 24 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of east central Louisiana and southwest Mississippi has been cancelled. Areas northwest of a line from metro Baton Rouge to McComb are not expecting widespread heavy rainfall that would result in flash flooding through Thursday night. $$ LAZ037-039-040-046>050-056>072-MSZ070-071-077-080>082-251715- /O.CON.KLIX.FF.A.0001.000000T0000Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ St. Helena-Washington-St. Tammany-Iberville-West Baton Rouge- East Baton Rouge-Ascension-Livingston-Assumption-St. James- St. John The Baptist-Upper Lafourche-St. Charles-Upper Jefferson- Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne- Lower Terrebonne-Lower Lafourche-Lower Jefferson- Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Pike-Walthall-Pearl River-Hancock-Harrison- Jackson- Including the cities of Darlington, Easleyville, Greensburg, Montpelier, Bogalusa, Enon, Franklinton, Slidell, Mandeville, Covington, Lacombe, Bayou Sorrel, Plaquemine, White Castle, Port Allen, Addis, Brusly, Baton Rouge, Gonzales, Donaldsonville, Prairieville, Denham Springs, Watson, Walker, Pierre Part, Labadieville, Paincourtville, Convent, Lutcher, Gramercy, Laplace, Reserve, Thibodaux, Raceland, Larose, Destrehan, Norco, Metairie, Kenner, East New Orleans, New Orleans, Belle Chasse, Chalmette, Violet, Houma, Bayou Cane, Chauvin, Cocodrie, Dulac, Montegut, Galliano, Cut Off, Golden Meadow, Leeville, Buras, Pointe A La Hache, Port Sulphur, Boothville, Venice, Empire, Myrtle Grove, Yscloskey, Amite, Kentwood, Roseland, Wilmer, Hammond, Robert, Ponchatoula, McComb, Dexter, Salem, Tylertown, Crossroads, McNeil, Poplarville, Picayune, Bay St. Louis, Waveland, Diamondhead, Gulfport, Pascagoula, Ocean Springs, Moss Point, Gautier, and St. Martin 1203 PM CDT Wed Mar 24 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING... The Flash Flood Watch continues for * portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, and West Baton Rouge. In Mississippi, Hancock, Harrison, Jackson, Pearl River, Pike, and Walthall. * through Thursday evening * Additional rounds of moderate to heavy rain are expected across much of southeast Louisiana as well as southeastern and coastal Mississippi through Thursday evening. This could lead to flash flooding. * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ TD
789 WGUS64 KLIX 250251 FFALIX Flood Watch National Weather Service New Orleans LA 951 PM CDT Wed Mar 24 2021 LAZ037-039-040-046>050-056>072-MSZ070-071-077-080>082-251200- /O.CON.KLIX.FF.A.0001.000000T0000Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ St. Helena-Washington-St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension-Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche-St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne- Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Northern Tangipahoa-Southern Tangipahoa-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Franklinton, Pascagoula, Raceland, Waveland, Easleyville, McComb, McNeil, Montpelier, Darlington, Gulfport, Greensburg, Port Allen, Diamondhead, Roseland, Hammond, Metairie, New Orleans, Boothville, Galliano, Chauvin, Kenner, Enon, St. Martin, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Destrehan, Baton Rouge, Picayune, Paincourtville, Pointe A La Hache, Port Sulphur, Leeville, Amite, Gautier, Slidell, Walker, Laplace, Denham Springs, Salem, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Bay St. Louis, and Empire 951 PM CDT Wed Mar 24 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY EVENING... The Flash Flood Watch continues for * Portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington and West Baton Rouge. In Mississippi, Hancock, Harrison, Jackson, Pearl River, Pike and Walthall. * Through Thursday evening * Even though widespread heavy rain is now unlikely there will still be pockets of heavy rain possible and given the highly saturated soils, isolated flash flooding is still possible. * Flooding of low lying and flood prone areas is possible with localized flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not enter or cross flowing water or water of unknown depth. Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ CAB
777 WGUS64 KLIX 250823 FFALIX Flood Watch National Weather Service New Orleans LA 323 AM CDT Thu Mar 25 2021 LAZ037-039-040-046>050-056>072-MSZ070-071-077-080>082-250930- /O.CAN.KLIX.FF.A.0001.000000T0000Z-210326T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ St. Helena-Washington-St. Tammany-Iberville-West Baton Rouge-East Baton Rouge-Ascension-Livingston-Assumption-St. James-St. John The Baptist-Upper Lafourche-St. Charles-Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne- Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard- Northern Tangipahoa-Southern Tangipahoa-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- Including the cities of Convent, Gonzales, Dexter, Chalmette, Covington, Buras, Cut Off, Belle Chasse, White Castle, East New Orleans, Gramercy, Bayou Cane, Franklinton, Pascagoula, Raceland, Waveland, Easleyville, McComb, McNeil, Montpelier, Darlington, Gulfport, Greensburg, Port Allen, Diamondhead, Roseland, Hammond, Metairie, New Orleans, Boothville, Galliano, Chauvin, Kenner, Enon, St. Martin, Labadieville, Dulac, Thibodaux, Yscloskey, Myrtle Grove, Mandeville, Prairieville, Violet, Donaldsonville, Lutcher, Ocean Springs, Robert, Bogalusa, Larose, Poplarville, Tylertown, Destrehan, Baton Rouge, Picayune, Paincourtville, Pointe A La Hache, Port Sulphur, Leeville, Amite, Gautier, Slidell, Walker, Laplace, Denham Springs, Salem, Montegut, Wilmer, Golden Meadow, Cocodrie, Venice, Lacombe, Plaquemine, Brusly, Bayou Sorrel, Kentwood, Pierre Part, Watson, Houma, Addis, Moss Point, Ponchatoula, Crossroads, Norco, Reserve, Bay St. Louis, and Empire 323 AM CDT Thu Mar 25 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of southeast Louisiana and Mississippi, including the following areas, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Orleans, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, St. Tammany, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington and West Baton Rouge. In Mississippi, Hancock, Harrison, Jackson, Pearl River, Pike and Walthall has been cancelled. The Flash Flood Watch is cancelled. Although scattered thunderstorms this afternoon could produce localized heavy rainfall, widespread heavy rain is no longer expected. Please continue to heed any remaining road closures. $$
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New Orleans, LA wrote its last area forecast discussion before this flash flood watch went out at Mar 22, 4:09 AM CDT, 8 hours 28 minutes earlier.
Area forecast discussion, Mar 22, 4:09 AM CDT, 8 hours 28 minutes before
Area Forecast Discussion National Weather Service New Orleans LA 409 AM CDT Mon Mar 22 2021 .SHORT TERM (Monday through Wednesday)... Biggest concern for the short term will be the potential for several rounds of heavy rain for the area. Overall current pattern has the current ridging over the southeast pushing eastward as low pressure intensifies as it moves into the Great Plains Tuesday then into the Upper Midwest/Great Lakes region on Wednesday. Strong moisture advection from the Gulf will start on Tuesday, and PWs quickly rise to the 1.75 inch range. Looking at SPC's climatology page, would be right near record highs for this time of the year. This rich moist air will hang around through around Thursday, setting the stage up for the aforementioned heavy rainfall threat. Rainfall efficient thunderstorms along with them training is also a concern Tuesday and Wednesday. Rainfall totals are looking at the 5 to 8 inches with locally heavier amounts possible over through Thursday. A non zero severe weather threat does exist for a limited time on Tuesday. Instability would be at its greatest when storms are forecast to fire fire up with models having up to 1200 J/kg for southeast Louisiana and coastal MS. Effective shear in the 30 to 40 kt range would be able to support severe storms, but winds are predominantly unidirectional so tornadoes are not as big as of a concern. Main convective mode would be linear. Biggest concern would be straight line wind gusts and maybe hail, on top of the heavy rain threat. -BL .LONG TERM (Thursday through Sunday)... The secondary shortwave trough is expected to move northeast from Texas across the middle to lower Mississippi Valley Thursday and Thursday night. The associated surface low, now trending quite a bit weaker on consecutive model runs, is fairly elongated from the western Gulf coast to the Arklatex to middle Mississippi Valley region through the day with the models having differing locations. Much of the jet stream level energy that will impact this system is still over a poorly sampled area of the north Pacific, so there will likely be some additional model shifts with regards to timing, position and strength of the major features and the placement of the heavier rainfall. The one thing that remains consistent is the analog guidance continues to show a strong signal for very heavy rainfall across the central Gulf coast, but confidence right now is highest with the heavy rainfall in our area Tuesday through Wednesday night, but less so Thursday and Thursday night. The same thing can be said with regards to severe weather potential on Thursday for the same reasons, but at least a low end (5-15%) probability of severe thunderstorms within 25 miles of a point seems about right at this time. Storm total rainfall of 5-8 inches is still expected on Mississippi coast and near Lake Pontchartrain from Monday night through Thursday night. A weak cold front will finally push through the region Thursday night, however this will only bring some drier air and not much cooler temperatures. Drier (not as wet) weather, but still some low rain chances from time to time, will persist Friday through the weekend, and hopefully additional rainfall will remain light since the area will be more than water-logged by that point with river flooding likely ongoing or worsening on some rivers at that point. A more substantial push of drier air with some cooler temperatures may finally arrive Sunday night. 22/TD && .AVIATION... VFR conditions will remain for the rest of this morning. Clouds will begin to build up and ceilings will to lower down to MVFR late this afternoon. The light and northeast to easterly winds will begin to move to southeasterly and will increase into the 10 to 15 knot range. -BL && .MARINE... Winds will be turning to onshore flow starting late tonight and will remain onshore for the majority of the week. Small craft exercise caution headlines may be necessary starting tonight as winds begin to pick up to the 15 to 20 kt range. Winds will remain elevated through Thursday. A weak cold front will then turn winds to an offshore flow for Friday before returning back to onshore for the weekend. -BL && .PRELIMINARY POINT TEMPS/POPS... MCB 74 57 71 61 / 0 20 90 60 BTR 75 61 75 63 / 0 40 80 60 ASD 74 60 74 63 / 0 20 90 80 MSY 75 63 75 65 / 0 10 90 80 GPT 72 61 72 63 / 0 10 90 90 PQL 72 58 72 61 / 0 0 80 90 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...None. GM...None. MS...None. GM...None. &&
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 4:19 PM CDT | Small Craft Advisory | LIX | 3 days | |
| Mar 22, 10:22 AM CDT | River Flood Warning | LIX | Harrison | 5 days |
| Mar 22, 10:30 AM CDT | River Flood Warning | LIX | Pearl River | 4 days |
Nearby
Flash Flood Watches in Louisiana, 2021Flash Flood Watches in Mississippi, 2021Every flash flood watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.