Alert archive / Louisiana / Flash Flood Warnings in 2022
Flash Flood Warning 57, NWS New Orleans, LA
NWS New Orleans, LA issued this flash flood warning at Aug 10, 2022, 12:58 PM CDT for Jefferson Parish, Orleans Parish, Plaquemines Parish, Louisiana. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 10, 2022, 12:58 PM CDT (17:58 UTC)
- Expired
- Aug 10, 2022, 2:59 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, Plaquemines Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.0 hours before the alert went out and 59 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
- 1766 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 609 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- -27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood warning 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 warning went out at Aug 10, 12:56 PM CDT, 2 minutes earlier.
Area forecast discussion, Aug 10, 12:56 PM CDT, 2 minutes before
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Local storm report, Aug 10, 9:05 AM CDT, 3 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
905 AM CDT WED AUG 10 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0847 AM FLASH FLOOD MOSS POINT 30.43N 88.53W
08/10/2022 JACKSON MS EMERGENCY MNGR
MULTIPLE FLOODED ROADWAYS REPORTED.
&&Local storm report, Aug 10, 9:52 AM CDT, 3 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
952 AM CDT WED AUG 10 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0903 AM FLASH FLOOD 2 SSE MOSS POINT 30.40N 88.52W
08/10/2022 JACKSON MS FIRE DEPT/RESCUE
REPORTS OF ROAD FLOODING AT FREDERIK ST AND
ROSE DR.
&&
CABSpecial weather statement, Aug 10, 12:48 PM CDT, 10 minutes before
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</html>The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:49 PM CDT | Special Weather Statement | LIX | Pointe Coupee | 41 min |
| Aug 9, 9:28 PM CDT | Special Weather Statement | LIX | East Feliciana | 32 min |
| Aug 9, 9:58 PM CDT | Areal Flood Advisory | LIX | East Baton Rouge, East Feliciana, West Feliciana | 3 hr |
| Aug 10, 8:53 AM CDT | Special Marine Warning | LIX | 97 min | |
| Aug 10, 10:31 AM CDT | Special Marine Warning | LIX | 119 min | |
| Aug 10, 11:21 AM CDT | Special Marine Warning | LIX | 84 min | |
| Aug 10, 12:17 PM CDT | Flash Flood Warning | LIX | Jefferson, Orleans | 3 hr |
| Aug 10, 12:48 PM CDT | Special Weather Statement | LIX | Orleans | 27 min |
| Aug 10, 1:24 PM CDT | Areal Flood Advisory | LIX | Jefferson, Saint Charles, Saint John the Baptist | 3 hr |
| Aug 10, 2:05 PM CDT | Flash Flood Warning | LIX | East Baton Rouge | 2 hr |
| Aug 10, 2:13 PM CDT | Areal Flood Advisory | LIX | Saint Tammany | 3 hr |
| Aug 10, 2:59 PM CDT | Areal Flood Advisory | LIX | Jefferson, Orleans, Plaquemines | 61 min |
| Aug 9, 7:50 PM CDT | Special Weather Statement | LIX | Pearl River | 25 min |
| Aug 10, 5:50 AM CDT | Areal Flood Advisory | LIX | Jackson | 3 hr |
| Aug 10, 8:49 AM CDT | Flash Flood Warning | LIX | Jackson | 3 hr |
| Aug 10, 11:40 AM CDT | Areal Flood Advisory | LIX | Jackson | 2 hr |
Nearby
Flash Flood Warnings in Louisiana, 2022Every flash flood warning in 2022
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.