Alert archive / Louisiana / Flash Flood Warnings in 2021
Flash Flood Warning 3, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Mar 23, 2021, 1:08 PM CDT for Jefferson Parish, Orleans Parish, Louisiana. It was in force for 2 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 23, 2021, 1:08 PM CDT (18:08 UTC)
- Expired
- Mar 23, 2021, 3:35 PM CDT
- In force
- 2 hr
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jefferson Parish, LA, Orleans Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 23, 2:00 PM CDT | FLASH FLOOD | New Orleans, LA | NUMEROUS STREETS FLOODED AND SOME IMPASSIBLE. FLOOD REPORTS INCLUDE THE FOLLOWING: DAUPHINE/IBERVILLE, CHIPPEWA/THIRD, TCHOUPITOULAS/LOUISIANA, CHARTERS/HOMER, PARIS/GENTILLY, HAYNES/DOWNMAN, OAK/CARROLLTON, POYDRAS/CAMP, CARROLLTON/MAPLE, CARROLLTON/HAMPSON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.1 hours before the alert went out and 40 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
- 13 J/kg
- Mixed-layer CIN
- -246 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
071
WGUS54 KLIX 231808
FFWLIX
LAC051-071-232115-
/O.NEW.KLIX.FF.W.0003.210323T1808Z-210323T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
108 PM CDT Tue Mar 23 2021
The National Weather Service in New Orleans has issued a
* Flash Flood Warning for...
Northwestern Jefferson Parish in southeastern Louisiana...
Western Orleans Parish in southeastern Louisiana...
* Until 415 PM CDT.
* At 108 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 2 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
New Orleans, Harvey, Marrero, Metairie, Avondale, East New
Orleans, Jefferson, Gretna, Harahan, Westwego, Arabi, Terrytown,
Bridge City, Elmwood, River Ridge, Waggaman, Lakefront Airport and
New Orleans Armstrong Airport.
Additional rainfall amounts up to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 2986 9024 3005 9027 3002 9016 3003 9003
3005 9003 3004 9001 3006 8997 3012 8991
3004 8982 3000 8986 2999 8986 2999 8988
3000 8989 3000 8991 2998 8995 2999 8997
2999 8999 2995 9001 2992 8998
FLASH FLOOD...RADAR INDICATED
$$
MW1 follow-up statement
383
WGUS74 KLIX 232035 RRA
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
335 PM CDT Tue Mar 23 2021
LAC051-071-232045-
/O.CAN.KLIX.FF.W.0003.000000T0000Z-210323T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jefferson LA-Orleans LA-
335 PM CDT Tue Mar 23 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN JEFFERSON AND
WESTERN ORLEANS PARISHES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 1200 AM CDT Friday for
portions of southeast Louisiana and Mississippi.
LAT...LON 2986 9024 3005 9027 3002 9016 3003 9003
3005 9003 3004 9001 3006 8997 3012 8991
3004 8982 3000 8986 2999 8986 2999 8988
3000 8989 3000 8991 2998 8995 2999 8997
2999 8999 2995 9001 2992 8998
$$
MWThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 3:57 AM CDT | Wind Advisory | LIX | Saint Bernard, Saint John the Baptist | 11 hr |
| Mar 23, 6:24 AM CDT | Special Weather Statement | LIX | Pointe Coupee, West Feliciana | 66 min |
| Mar 23, 6:40 AM CDT | Severe Thunderstorm Warning | LIX | Pointe Coupee, West Feliciana | 35 min |
| Mar 23, 7:09 AM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, Pointe Coupee, West Feliciana | 51 min |
| Mar 23, 7:47 AM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, West Feliciana | 43 min |
| Mar 23, 8:00 AM CDT | Special Weather Statement | LIX | Pointe Coupee | 30 min |
| Mar 23, 8:33 AM CDT | Special Weather Statement | LIX | West Feliciana | 27 min |
| Mar 23, 9:00 AM CDT | Special Weather Statement | LIX | East Feliciana | 30 min |
| Mar 23, 9:11 AM CDT | Special Weather Statement | LIX | Pointe Coupee | 34 min |
| Mar 23, 9:29 AM CDT | Special Weather Statement | LIX | Saint Helena | 31 min |
| Mar 23, 9:42 AM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Iberville, Livingston, Pointe Coupee, West Baton Rouge | 34 min |
| Mar 23, 10:41 AM CDT | River Flood Warning | LIX | Saint Tammany | 65 days |
| Mar 23, 10:41 AM CDT | River Flood Warning | LIX | Saint Tammany | 7 days |
| Mar 23, 10:51 AM CDT | River Flood Warning | LIX | Saint Helena | 62 hr |
| Mar 23, 10:54 AM CDT | River Flood Warning | LIX | Tangipahoa | 6 days |
| Mar 23, 10:57 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Mar 23, 11:01 AM CDT | River Flood Warning | LIX | Saint Tammany | 4 days |
| Mar 23, 11:22 AM CDT | Special Weather Statement | LIX | Assumption | 23 min |
| Mar 23, 11:25 AM CDT | Special Weather Statement | LIX | Saint Tammany | 35 min |
| Mar 23, 11:39 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 51 min |
| Mar 23, 11:46 AM CDT | River Flood Warning | LIX | East Baton Rouge, West Baton Rouge | 35 days |
| Mar 23, 11:49 AM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany | 41 min |
| Mar 23, 12:06 PM CDT | Special Marine Warning | LIX | 54 min | |
| Mar 23, 12:47 PM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Saint Bernard | 3 hr |
| Mar 23, 12:55 PM CDT | Areal Flood Advisory | LIX | Saint Tammany | 3 hr |
| Mar 23, 1:18 PM CDT | Flash Flood Warning | LIX | Saint Bernard | 2 hr |
| Mar 23, 1:20 PM CDT | Special Marine Warning | LIX | 85 min | |
| Mar 23, 1:48 PM CDT | Areal Flood Advisory | LIX | Jefferson, Saint Charles | 3 hr |
| Mar 23, 2:38 PM CDT | Special Marine Warning | LIX | 97 min | |
| Mar 23, 3:25 PM CDT | Areal Flood Advisory | LIX | Lafourche | 3 hr |
| Mar 23, 3:27 PM CDT | Areal Flood Advisory | LIX | Lafourche, Terrebonne | 3 hr |
| Mar 23, 3:38 PM CDT | Areal Flood Advisory | LIX | Lafourche, Terrebonne | 3 hr |
| Mar 23, 4:05 PM CDT | Flash Flood Warning | LIX | Lafourche, Terrebonne | 9 hr |
| Mar 23, 4:09 PM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Saint Bernard | 3 hr |
Nearby
Flash Flood Warnings in Louisiana, 2021Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.