Alert archive / Louisiana / Flash Flood Warnings in 2022

Flash Flood Warning 60, NWS New Orleans, LA

August 19, 2022East Baton Rouge Parish, West Baton Rouge Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at Aug 19, 2022, 5:55 PM CDT for East Baton Rouge Parish, West Baton Rouge Parish, Louisiana. It was in force for 40 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
Aug 19, 2022, 5:55 PM CDT (22:55 UTC)
Expired
Aug 19, 2022, 6:35 PM CDT
In force
40 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Flood severity
None

Counties East Baton Rouge Parish, LA, West Baton Rouge Parish, LA

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.9 hours before the alert went out and 196 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, Lake Charles Mun, LA at 12:00Z on 2022-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1657 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, Lake Charles Mun, LA at 12:00Z on 2022-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -58 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
1657 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
658 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-58 m²/s²
0-3 km storm-relative helicity
-62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 7:54 AM CDTSpecial Marine WarningLIX66 min
Aug 19, 9:15 AM CDTSpecial Weather StatementLIXSaint Tammany30 min
Aug 19, 12:44 PM CDTSpecial Marine WarningLIX91 min
Aug 19, 12:56 PM CDTSpecial Marine WarningLIX99 min
Aug 19, 1:55 PM CDTAreal Flood AdvisoryLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles3 hr
Aug 19, 2:29 PM CDTSpecial Marine WarningLIX91 min
Aug 19, 2:41 PM CDTSpecial Marine WarningLIX114 min
Aug 19, 3:02 PM CDTSpecial Weather StatementLIXSaint Charles28 min
Aug 19, 4:37 PM CDTSpecial Weather StatementLIXJefferson38 min
Aug 19, 4:49 PM CDTSpecial Weather StatementLIXTangipahoa41 min
Aug 19, 5:12 PM CDTAreal Flood AdvisoryLIXEast Baton Rouge, West Baton Rouge43 min
Aug 19, 6:35 PM CDTAreal Flood AdvisoryLIXEast Baton Rouge, West Baton Rouge55 min
Aug 19, 9:37 AM CDTSpecial Weather StatementLIXHancock23 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.