Alert archive / Louisiana / Flash Flood Warnings in 2022

Flash Flood Warning 20, NWS New Orleans, LA

April 13, 2022Saint Charles Parish, Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at Apr 13, 2022, 11:36 PM CDT for Saint Charles Parish, Saint John the Baptist Parish, Louisiana. It was in force for 109 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 13, 2022, 11:36 PM CDT (04:36 UTC)
Expired
Apr 14, 2022, 1:25 AM CDT
In force
109 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

Counties Saint Charles Parish, LA, Saint John the Baptist Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 4.6 hours before the alert went out and 73 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2022-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1037 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2022-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1037 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
816 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
259 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.3

Open this sounding in Storm Lab

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 7:33 PM CDTSpecial Weather StatementLIXSaint Helena42 min
Apr 13, 8:09 PM CDTSpecial Weather StatementLIXEast Feliciana, Pointe Coupee, West Feliciana51 min
Apr 13, 8:16 PM CDTSevere Thunderstorm WarningLIXEast Feliciana, Pointe Coupee, West Feliciana29 min
Apr 13, 8:56 PM CDTSpecial Weather StatementLIXEast Feliciana, Saint Helena, Tangipahoa64 min
Apr 13, 9:11 PM CDTSpecial Weather StatementLIXPointe Coupee, West Baton Rouge49 min
Apr 13, 9:37 PM CDTSpecial Weather StatementLIXTangipahoa, Washington38 min
Apr 13, 10:12 PM CDTSpecial Weather StatementLIXLivingston, Saint Tammany, Tangipahoa, Washington48 min
Apr 13, 10:14 PM CDTSpecial Marine WarningLIX31 min
Apr 13, 10:21 PM CDTSpecial Weather StatementLIXAssumption, Saint James24 min
Apr 13, 10:32 PM CDTSpecial Marine WarningLIX58 min
Apr 13, 11:15 PM CDTSpecial Weather StatementLIXOrleans30 min
Apr 13, 11:36 PM CDTSpecial Marine WarningLIX54 min
Apr 13, 11:54 PM CDTSpecial Weather StatementLIXOrleans, Saint Bernard, Saint Charles66 min
Apr 13, 11:58 PM CDTSpecial Marine WarningLIX92 min
Apr 14, 12:00 AM CDTFlash Flood WarningLIXJefferson, Orleans90 min
Apr 14, 12:33 AM CDTSpecial Marine WarningLIX57 min
Apr 14, 1:21 AM CDTSpecial Marine WarningLIX84 min
Apr 14, 1:30 AM CDTSpecial Marine WarningLIX60 min
Apr 14, 2:30 AM CDTSpecial Marine WarningLIX90 min
Apr 14, 2:45 AM CDTSpecial Marine WarningLIX90 min
Apr 14, 4:00 AM CDTSpecial Marine WarningLIX2 hr
Apr 14, 7:59 AM CDTSpecial Marine WarningLIX91 min
Apr 14, 8:52 AM CDTRiver Flood WarningLIXSaint Tammany11 hr
Apr 14, 8:52 AM CDTRiver Flood WarningLIXSaint Tammany25 hr
Apr 14, 9:03 AM CDTRiver Flood WarningLIXTangipahoa49 hr
Apr 14, 9:07 AM CDTRiver Flood WarningLIXSaint Tammany3 days
Apr 13, 7:10 PM CDTSpecial Weather StatementLIXAmite, Wilkinson65 min
Apr 13, 7:59 PM CDTSevere Thunderstorm WarningLIXAmite, Wilkinson46 min
Apr 13, 11:21 PM CDTSpecial Weather StatementLIXHarrison, Jackson54 min
Apr 13, 11:25 PM CDTSevere Thunderstorm WarningLIXJackson35 min
Apr 14, 12:15 AM CDTSpecial Weather StatementLIXHarrison, Jackson30 min

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.