Alert archive / Louisiana / Flash Flood Warnings in 1997

Flash Flood Warning 4, NWS New Orleans, LA

April 27, 1997East Feliciana Parish, Pointe Coupee Parish, West Feliciana Parish, Louisiana

NWS New Orleans, LA issued this flash flood warning at Apr 27, 1997, 3:50 AM CDT for East Feliciana Parish, Pointe Coupee Parish, West Feliciana Parish, Louisiana. It was in force for 3 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
Apr 27, 1997, 3:50 AM CDT (08:50 UTC)
Expired
Apr 27, 1997, 6:30 AM CDT
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties East Feliciana Parish, LA, Pointe Coupee Parish, LA, West Feliciana Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.8 hours before the alert went out and 170 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 1997-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 96 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 1997-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 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
96 J/kg
Mixed-layer CIN
-414 J/kg
Mixed-layer LCL
887 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
371 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 10:57 PM CDTSevere Thunderstorm WarningLIXPointe Coupee33 min
Apr 26, 11:15 PM CDTSevere Thunderstorm WarningLIXWest Feliciana30 min
Apr 27, 12:44 AM CDTSevere Thunderstorm WarningLIXPointe Coupee46 min
Apr 27, 1:15 AM CDTSevere Thunderstorm WarningLIXWest Feliciana30 min
Apr 27, 1:33 AM CDTSevere Thunderstorm WarningLIXWest Feliciana27 min
Apr 27, 1:40 AM CDTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana20 min
Apr 27, 1:53 AM CDTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana37 min
Apr 27, 2:33 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana42 min
Apr 27, 3:24 AM CDTFlash Flood WarningLIXEast Feliciana, Pointe Coupee, West Feliciana3 hr
Apr 27, 8:59 AM CDTSevere Thunderstorm WarningLIXEast Baton Rouge, Iberville, West Baton Rouge61 min
Apr 27, 9:32 AM CDTSevere Thunderstorm WarningLIXAscension, Livingston58 min
Apr 27, 9:32 AM CDTSevere Thunderstorm WarningLIXSaint Helena58 min
Apr 27, 10:38 AM CDTFlash Flood WarningLIXIberville4 hr
Apr 27, 10:38 AM CDTFlash Flood WarningLIXEast Feliciana4 hr
Apr 27, 10:46 AM CDTFlash Flood WarningLIXIberville4 hr
Apr 27, 10:46 AM CDTFlash Flood WarningLIXEast Feliciana4 hr
Apr 27, 11:09 AM CDTSevere Thunderstorm WarningLIXSaint Tammany, Washington66 min
Apr 27, 12:29 PM CDTFlash Flood WarningLIXTerrebonne2 hr

Nearby

Flash Flood Warnings in Louisiana, 1997Every flash flood warning in 1997

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.