Alert archive / Louisiana / Tornado Warnings in 2003

Tornado Warning 38, NWS Shreveport, LA

November 17, 2003Sabine Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Nov 17, 2003, 10:34 PM CST for Sabine Parish, Louisiana. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Nov 17, 2003, 10:34 PM CST (04:34 UTC)
Expired
Nov 17, 2003, 11:15 PM CST
In force
41 min
Issued by
NWS Shreveport, LA
Area
Counties, with a storm outline in the text

County Sabine Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Nov 17, 9:25 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 4.6 hours before the alert went out and 94 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 2003-11-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 512 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, Shreveport, LA at 00:00Z on 2003-11-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 231 square meters per square second.1939587897117Sfc1 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
512 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
231 m²/s²
0-3 km storm-relative helicity
284 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.6

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 180434
TORSHV
LAC085-180515-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1034 PM CST MON NOV 17 2003

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  SABINE PARISH IN NORTHWEST LOUISIANA

* UNTIL 1115 PM CST

* AT 1034 PM CST...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A TORNADO 7 MILES SOUTHWEST OF ZWOLLE...OR ABOUT 14
  MILES WEST OF MANY...MOVING NORTHEAST AT 45 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  ZWOLLE AT 1040 PM CST

DURING A TORNADO...SEEK SHELTER IN AN INTERIOR HALLWAY OR ROOM...ON
THE LOWEST FLOOR OF YOUR HOME...OR BUSINESS. STAY AWAY FROM WINDOWS.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  SABINE PARISH IN NORTHWEST LOUISIANA
UNTIL 1115 PM CST.

LAT...LON 3154 9376 3168 9380 3180 9368 3183 9345
          3171 9345 3171 9334 3157 9334 3141 9366

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 17, 9:12 PM CSTFlash Flood WarningSHVDe Soto6 hr
Nov 17, 9:57 PM CSTTornado WarningSHVNatchitoches, Winn48 min
Nov 18, 12:24 AM CSTSevere Thunderstorm WarningSHVBienville51 min
Nov 18, 1:01 AM CSTSevere Thunderstorm WarningSHVNatchitoches29 min
Nov 18, 3:05 AM CSTSevere Thunderstorm WarningSHVLaSalle40 min

Nearby

Tornado Warnings in Louisiana, 2003Every tornado warning in 2003Tornadoes in 2003

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.