Alert archive / Louisiana / Flash Flood Warnings in 2001

Flash Flood Warning 2, NWS New Orleans, LA

February 27, 2001East Feliciana Parish, Saint Helena Parish, Louisiana; Amite County, Mississippi

NWS New Orleans, LA issued this flash flood warning at Feb 27, 2001, 6:25 PM CST for East Feliciana Parish, Saint Helena Parish, Louisiana; Amite County, Mississippi. 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
Feb 27, 2001, 6:25 PM CST (00:25 UTC)
Expired
Feb 27, 2001, 9:30 PM CST
In force
3 hr
Issued by
NWS New Orleans, LA
Area
Whole counties

Counties East Feliciana Parish, LA, Saint Helena Parish, LA, Amite County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.4 hours before the alert went out and 135 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 2001-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1418 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 2001-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 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
1418 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS54 KLIX 280048 COR
FFWLIX
LAC037-091-MSC005-280330-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTION TO HEADING...
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
ISSUED BY JACKSON MS
625 PM CST TUE FEB 27 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ST. HELENA PARISH IN SOUTHEAST LOUISIANA
  EAST FELICIANA PARISH IN SOUTHEAST LOUISIANA
  AMITE COUNTY IN SOUTHERN MISSISSIPPI

* UNTIL 930 PM CST

* AT 625 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN 14 MILES SOUTHWEST OF LIBERTY...OR ABOUT 20 MILES NORTHEAST OF
  JACKSON...MOVING EAST AT 40 MPH.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DAN>GERS OF FLOODS AND FLASH FLOODS.

82

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 4:59 AM CSTSevere Thunderstorm WarningLIXAssumption31 min
Feb 28, 6:17 AM CSTTornado WarningLIXLafourche28 min
Feb 28, 9:43 AM CSTSevere Thunderstorm WarningLIXJefferson, Plaquemines47 min

Nearby

Flash Flood Warnings in Louisiana, 2001Flash Flood Warnings in Mississippi, 2001Every flash flood warning in 2001

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.