Alert archive / Louisiana / Flash Flood Warnings in 2021
Flash Flood Warning 131, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Dec 6, 2021, 2:51 PM CST for Ascension Parish, East Baton Rouge Parish, West Baton Rouge Parish, Louisiana. It was in force for 116 min. 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
- Dec 6, 2021, 2:51 PM CST (20:51 UTC)
- Expired
- Dec 6, 2021, 4:47 PM CST
- In force
- 116 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ascension Parish, LA, East Baton Rouge Parish, LA, West Baton Rouge Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 6, 2:55 PM CST | FLASH FLOOD | 3 Wnw Baton Rouge, LA | EM REPORTS I-10 AT THE GOVERNORS MANSION IS CLOSED DUE TO HIGH WATER. |
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, 8.9 hours before the alert went out and 137 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
- 720 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 680 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.4
The text
As transmitted.
301
WGUS54 KLIX 062051
FFWLIX
LAC005-033-121-070000-
/O.NEW.KLIX.FF.W.0131.211206T2051Z-211207T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New Orleans LA
251 PM CST Mon Dec 6 2021
The National Weather Service in New Orleans has issued a
* Flash Flood Warning for...
Northwestern Ascension Parish in southeastern Louisiana...
South Central East Baton Rouge Parish in southeastern Louisiana...
Southeastern West Baton Rouge Parish in southeastern Louisiana...
* Until 600 PM CST.
* At 251 PM CST, 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.
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...
Baton Rouge, Denham Springs, Port Allen, Oak Hills Place,
Westminster, Inniswold, Gardere, Village St. George, Old Jefferson
and Shenandoah.
This includes the following Interstates...
Interstate 10 in Louisiana between mile markers 154 and 168.
Interstate 12 between mile markers 1 and 8.
Interstate 110 in Louisiana between mile markers 1 and 3.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3048 9122 3048 9120 3048 9104 3048 9099
3046 9099 3033 9099 3032 9114 3032 9115
3032 9122
FLASH FLOOD...RADAR INDICATED
$$
MW1 follow-up statement
798
WGUS74 KLIX 062247
FFSLIX
Flash Flood Statement
National Weather Service New Orleans LA
447 PM CST Mon Dec 6 2021
LAC005-033-121-062257-
/O.CAN.KLIX.FF.W.0131.000000T0000Z-211207T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ascension LA-East Baton Rouge LA-West Baton Rouge LA-
447 PM CST Mon Dec 6 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN ASCENSION,
SOUTH CENTRAL EAST BATON ROUGE AND SOUTHEASTERN WEST BATON ROUGE
PARISHES...
The heavy rain has ended. Light rain will continue, but flooding is
no longer expected to pose a threat. Please continue to heed any
remaining road closures.
LAT...LON 3048 9122 3048 9120 3048 9104 3048 9099
3046 9099 3033 9099 3032 9114 3032 9115
3032 9122
$$
DMThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 6, 11:08 AM CST | Special Weather Statement | LIX | East Feliciana | 67 min |
| Dec 6, 12:01 PM CST | Special Weather Statement | LIX | Saint Helena | 74 min |
| Dec 6, 12:21 PM CST | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena | 54 min |
| Dec 6, 12:46 PM CST | Severe Thunderstorm Warning | LIX | Tangipahoa, Washington | 59 min |
| Dec 6, 1:22 PM CST | Tornado Warning | LIX | Tangipahoa, Washington | 68 min |
| Dec 6, 1:29 PM CST | Severe Thunderstorm Warning | LIX | Saint Helena, Tangipahoa, Washington | 61 min |
| Dec 6, 1:40 PM CST | Special Weather Statement | LIX | Saint Helena | 65 min |
| Dec 6, 1:44 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint Helena | 61 min |
| Dec 6, 1:54 PM CST | Severe Thunderstorm Warning | LIX | Saint Helena, Tangipahoa | 66 min |
| Dec 6, 2:21 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany, Washington | 39 min |
| Dec 6, 2:24 PM CST | Tornado Warning | LIX | Washington | 21 min |
| Dec 6, 2:30 PM CST | Severe Thunderstorm Warning | LIX | Livingston, Saint Tammany, Tangipahoa | 60 min |
| Dec 6, 2:35 PM CST | Tornado Warning | LIX | Saint Tammany, Washington | 55 min |
| Dec 6, 2:41 PM CST | Special Marine Warning | LIX | 64 min | |
| Dec 6, 2:51 PM CST | Tornado Warning | LIX | Saint Tammany | 39 min |
| Dec 6, 2:56 PM CST | Tornado Warning | LIX | Saint Tammany | 49 min |
| Dec 6, 3:09 PM CST | Severe Thunderstorm Warning | LIX | Saint Tammany | 66 min |
| Dec 6, 3:20 PM CST | Tornado Warning | LIX | Saint Tammany | 30 min |
| Dec 6, 3:26 PM CST | Special Marine Warning | LIX | 64 min | |
| Dec 6, 4:14 PM CST | Special Marine Warning | LIX | 91 min | |
| Dec 6, 5:24 PM CST | Special Marine Warning | LIX | 66 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.