Alert archive / Louisiana / Flash Flood Warnings in 2021
Flash Flood Warning 83, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Aug 10, 2021, 2:05 PM CDT for Jefferson Parish, Louisiana. It was in force for 81 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 10, 2021, 2:05 PM CDT (19:05 UTC)
- Expired
- Aug 10, 2021, 3:26 PM CDT
- In force
- 81 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
County Jefferson Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.1 hours before the alert went out and 54 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
- 3054 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 686 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
402
WGUS54 KLIX 101905
FFWLIX
LAC051-102130-
/O.NEW.KLIX.FF.W.0083.210810T1905Z-210810T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
205 PM CDT Tue Aug 10 2021
The National Weather Service in New Orleans has issued a
* Flash Flood Warning for...
North Central Jefferson Parish in southeastern Louisiana...
* Until 430 PM CDT.
* At 205 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Metairie, Jefferson, Elmwood and Bridge City.
This includes the following Interstates...
Interstate 10 in Louisiana near mile marker 228.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 2995 9014 2996 9019 2997 9020 2998 9020
2999 9020 3000 9020 3000 9019 3000 9017
2999 9014 2998 9013 2997 9013 2996 9014
FLASH FLOOD...RADAR INDICATED
$$
TD1 follow-up statement
613
WGUS74 KLIX 102026
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
326 PM CDT Tue Aug 10 2021
LAC051-102036-
/O.CAN.KLIX.FF.W.0083.000000T0000Z-210810T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jefferson LA-
326 PM CDT Tue Aug 10 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTH CENTRAL JEFFERSON
PARISH...
Flooding is no longer expected to pose a threat.
LAT...LON 2995 9014 2996 9019 2997 9020 2998 9020
2999 9020 3000 9020 3000 9019 3000 9017
2999 9014 2998 9013 2997 9013 2996 9014
$$
TDThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 1:41 PM CDT | Special Weather Statement | LIX | Saint Charles | 49 min |
| Aug 10, 1:54 PM CDT | Special Weather Statement | LIX | Saint Charles | 36 min |
| Aug 10, 2:13 PM CDT | Special Weather Statement | LIX | Tangipahoa | 32 min |
| Aug 10, 2:27 PM CDT | Special Weather Statement | LIX | Saint Charles | 33 min |
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; the sounding from the Mesonet's radiosonde archive.