Alert archive / Louisiana / Tornado Warnings in 2001

Tornado Warning 7, NWS Shreveport, LA

November 24, 2001Grant Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Nov 24, 2001, 12:24 AM CST for Grant Parish, Louisiana. It was in force for 51 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Nov 24, 2001, 12:24 AM CST (06:24 UTC)
Expired
Nov 24, 2001, 1:15 AM CST
In force
51 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County Grant Parish, LA

What was reported inside it

TimeReportWhereRemark
Nov 24, 12:43 AM CSTTornado F1Colfax, LAA supercell developed in a favorable environment which produced a weak tornado. Damage was confined to small trees and tree limbs.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 6.4 hours before the alert went out and 149 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, Shreveport, LA at 00:00Z on 2001-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1386 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 00:00Z on 2001-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939Sfc1 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
1386 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1160 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

498 
WFUS54 KSHV 240626
TORSHV
LAC043-240715-
/NEW.KSHV.TO.W.0004.240624-240715/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1224 AM CST SAT NOV 24 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  GRANT PARISH IN NORTH CENTRAL LOUISIANA

* UNTIL 115 AM CST

* AT 1224 AM CST...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER   
RADAR INDICATED A TORNADO OVER COLFAX...MOVING NORTHEAST NEAR 30 
MPH. 

* THE TORNADO IS EXPECTED TO AFFECT THE TOWNS OF WILLIANA AND
DRY PRONG. IF YOU LIVE IN COLFAX...TAKE COVER IMMEDIATELY.

IF YOU ARE IN A MOBILE HOME...ABANDON IT FOR A STURDY BUILDING...OR
GET IN A DITCH OR CULVERT.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  GRANT PARISH IN NORTH CENTRAL LOUISIANA
UNTIL 115 AM CST.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 23, 11:34 PM CSTTornado WarningSHVJackson56 min
Nov 23, 11:47 PM CSTTornado WarningSHVOuachita58 min
Nov 24, 1:02 AM CSTTornado WarningSHVWinn28 min
Nov 24, 1:20 AM CSTTornado WarningSHVCaldwell40 min

Nearby

Tornado Warnings in Louisiana, 2001Every tornado warning in 2001Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.