Alert archive / Louisiana / Tornado Warnings in 2001

Tornado Warning 159, NWS Jackson, MS

December 12, 2001Franklin Parish, Tensas Parish, Louisiana

NWS Jackson, MS issued this tornado warning at Dec 12, 2001, 2:27 PM CST for Franklin Parish, Tensas Parish, Louisiana. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Dec 12, 2001, 2:27 PM CST (20:27 UTC)
Expired: Dec 12, 2001, 3:30 PM CST
In force: 63 min
Issued by: NWS Jackson, MS
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Franklin Parish, LA, Tensas Parish, LA

The watch it was issued in

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

Issued	Product	Office	Lasted
Dec 12, 11:00 AM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.5 hours before the alert went out and 134 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1218 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 325 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.

386 
WFUS54 KJAN 122028
TORJAN
LAC041-107-122130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
227 PM CST WED DEC 12 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  FRANKLIN PARISH IN NORTHEAST LOUISIANA
  TENSAS PARISH IN NORTHEAST LOUISIANA

* UNTIL 330 PM CST

* AT 227 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A TORNADO 29 MILES SOUTHWEST OF NEWELLTON...MOVING NORTHEAST AT 35 
  MPH.

* THE TORNADO IS EXPECTED TO...
  BE NEAR NEWELLTON AT 310 PM CST

IF NO UNDERGROUND SHELTER IS AVAILABLE...GO TO AN INTERIOR ROOM ON
THE LOWEST FLOOR. MOBILE HOMES AND VEHICLES ARE NOT SAFE.

LAT...LON 3190 9180 3175 9167 3210 9109 3215 9118
          3223 9119

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 12, 12:57 PM CST	Flash Flood Warning	JAN	Morehouse	2 hr
Dec 12, 1:55 PM CST	Tornado Warning	JAN	Catahoula	50 min
Dec 12, 3:00 PM CST	Flash Flood Warning	JAN	Morehouse	2 hr
Dec 12, 3:20 PM CST	Tornado Warning	JAN	Madison	55 min
Dec 12, 3:30 PM CST	Tornado Warning	JAN	Tensas	45 min
Dec 12, 4:15 PM CST	Tornado Warning	JAN	Madison	45 min

Nearby

Tornado Warnings in Louisiana, 2001 Every tornado warning in 2001 Tornadoes 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.