Alert archive / Louisiana / Flood Watches in 2021
Flood Watch 2, NWS New Orleans, LA
NWS New Orleans, LA issued this flood watch at Aug 28, 2021, 2:36 AM CDT for 5 counties in Mississippi; 15 parishes in Louisiana. It took effect at Aug 29, 2021, 7:00 AM CDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Aug 28, 2021, 2:36 AM CDT (07:36 UTC)
- In effect from
- Aug 29, 2021, 7:00 AM CDT
- Expired
- Aug 28, 2021, 2:47 AM CDT
- In force
- 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, Orleans Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany 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 00:00Z, 7.6 hours before the alert went out and 100 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
- 83 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 709 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted.
694 WGUS64 KLIX 280736 FFALIX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service New Orleans LA 236 AM CDT Sat Aug 28 2021 LAZ034>037-039-046>050-056>061-063>072-075>078-MSZ068>071-077- 080>082-281545- /O.NEW.KLIX.FA.A.0002.210829T1200Z-210831T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- Iberville-West Baton Rouge-East Baton Rouge-Ascension-Livingston- Assumption-St. James-St. John The Baptist-Upper Lafourche-St. Charles-Upper Jefferson-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa-Southern Tangipahoa-Northwest St. Tammany-Southeast St. Tammany-Western Orleans-Eastern Orleans-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 236 AM CDT Sat Aug 28 2021 ...FLOOD WATCH IN EFFECT FROM SUNDAY MORNING THROUGH TUESDAY MORNING... The National Weather Service in New Orleans has issued a * Flood Watch for portions of southeast Louisiana and Mississippi, including the following areas and parishes, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Eastern Orleans, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Northwest St. Tammany, Pointe Coupee, Southeast St. Tammany, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge, West Feliciana and Western Orleans. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson. * From Sunday morning through Tuesday morning. * Excessive rainfall associated with Hurricane Ida will lead to flash flooding in most areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ TDB
1 follow-up statement
803 WGUS64 KLIX 280747 FFALIX Flood Watch National Weather Service New Orleans LA 247 AM CDT Sat Aug 28 2021 LAZ034>037-039-046>050-056>061-063>072-075>078-MSZ068>071-077- 080>082-280900- /O.CAN.KLIX.FA.A.0002.210829T1200Z-210831T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pointe Coupee-West Feliciana-East Feliciana-St. Helena-Washington- Iberville-West Baton Rouge-East Baton Rouge-Ascension-Livingston- Assumption-St. James-St. John The Baptist-Upper Lafourche-St. Charles-Upper Jefferson-Upper Plaquemines-Upper St. Bernard-Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa-Southern Tangipahoa-Northwest St. Tammany-Southeast St. Tammany-Western Orleans-Eastern Orleans-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 247 AM CDT Sat Aug 28 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for portions of southeast Louisiana and Mississippi, including the following areas and parishes, in southeast Louisiana, Ascension, Assumption, East Baton Rouge, East Feliciana, Eastern Orleans, Iberville, Livingston, Lower Jefferson, Lower Lafourche, Lower Plaquemines, Lower St. Bernard, Lower Terrebonne, Northern Tangipahoa, Northwest St. Tammany, Pointe Coupee, Southeast St. Tammany, Southern Tangipahoa, St. Charles, St. Helena, St. James, St. John The Baptist, Upper Jefferson, Upper Lafourche, Upper Plaquemines, Upper St. Bernard, Upper Terrebonne, Washington, West Baton Rouge, West Feliciana and Western Orleans. In Mississippi, Amite, Hancock, Harrison, Jackson, Pearl River, Pike, Walthall and Wilkinson has been cancelled. This Flood Watch will be replaced by a Flash Flood Watch $$ TDB
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 3:13 AM CDT | Flash Flood Watch | LIX | Amite, Pearl River, Pike, Walthall, Wilkinson | 61 hr |
| Aug 28, 10:24 AM CDT | River Flood Warning | LIX | Pike | 4 days |
| Aug 28, 11:34 AM CDT | River Flood Warning | LIX | Pearl River | 4 days |
| Aug 28, 11:34 AM CDT | River Flood Warning | LIX | Pearl River | 4 days |
| Aug 28, 10:05 AM CDT | River Flood Warning | LIX | East Baton Rouge, Livingston | 3 days |
| Aug 28, 10:05 AM CDT | River Flood Warning | LIX | East Baton Rouge | 3 days |
| Aug 28, 10:05 AM CDT | River Flood Warning | LIX | Saint Helena | 4 days |
| Aug 28, 10:05 AM CDT | River Flood Warning | LIX | East Baton Rouge | 5 days |
| Aug 28, 10:05 AM CDT | River Flood Warning | LIX | Ascension, Livingston | 3 days |
| Aug 28, 10:09 AM CDT | River Flood Warning | LIX | East Baton Rouge | 4 days |
| Aug 28, 10:24 AM CDT | River Flood Warning | LIX | Tangipahoa | 7 days |
| Aug 28, 10:24 AM CDT | River Flood Warning | LIX | Tangipahoa | 5 days |
| Aug 28, 10:24 AM CDT | River Flood Warning | LIX | Tangipahoa | 4 days |
| Aug 28, 10:24 AM CDT | River Flood Warning | LIX | Tangipahoa | 4 days |
| Aug 28, 10:47 AM CDT | River Flood Warning | LIX | Saint Tammany | 6 days |
| Aug 28, 10:47 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Aug 28, 10:52 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Aug 28, 10:52 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Aug 28, 11:06 AM CDT | River Flood Warning | LIX | Saint Helena | 4 days |
| Aug 28, 11:06 AM CDT | River Flood Warning | LIX | Saint Helena | 5 days |
| Aug 28, 11:06 AM CDT | River Flood Warning | LIX | Livingston | 6 days |
| Aug 28, 1:40 PM CDT | River Flood Warning | LIX | Livingston | 7 days |
| Aug 28, 1:40 PM CDT | River Flood Warning | LIX | Ascension, Livingston | 7 days |
Nearby
Flood Watches in Louisiana, 2021Flood Watches in Mississippi, 2021Every 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.