Alert archive / Louisiana / Tornado Warnings in 2002

Tornado Warning 28, NWS Shreveport, LA

December 19, 2002Jackson Parish, Lincoln Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Dec 19, 2002, 4:18 AM CST for Jackson Parish, Lincoln Parish, Louisiana. It was in force for 42 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: Dec 19, 2002, 4:18 AM CST (10:18 UTC)
Expired: Dec 19, 2002, 5:00 AM CST
In force: 42 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

Counties Jackson Parish, LA, Lincoln Parish, LA

The radar

The Shreveport radar (KSHV), 112 km from the middle of the area, began a volume at 10:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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 19, 2:25 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 10.3 hours before the alert went out and 104 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: 1623 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 618 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 354 m²/s²
Significant tornado parameter: 3.8
Supercell composite: 12.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 191018
TORSHV
LAC049-061-191100-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
417 AM CST THU DEC 19 2002

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA
  LINCOLN PARISH IN NORTH CENTRAL LOUISIANA

* UNTIL 500 AM CST

* AT 417 AM CST...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER    
  RADAR INDICATED A TORNADO ABOUT 5 MILES SOUTH OF RUSTON...MOVING   
  NORTHEAST AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  QUITMAN AT 425 AM CST

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A CULVERT...DITCH...OR
LOW SPOT...AND COVER YOUR HEAD.

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...
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA
  LINCOLN PARISH IN NORTH CENTRAL LOUISIANA
UNTIL 500 AM CST.

LAT...LON 3247 9278 3234 9263 3255 9243 3271 9260

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 18, 6:42 PM CST	Tornado Warning	SHV	Caddo	33 min
Dec 18, 7:15 PM CST	Tornado Warning	SHV	Bossier, Caddo	45 min
Dec 18, 8:50 PM CST	Severe Thunderstorm Warning	SHV	Webster	25 min
Dec 18, 9:14 PM CST	Flash Flood Warning	SHV	Bossier, Caddo	4 hr
Dec 18, 9:21 PM CST	Flash Flood Warning	SHV	Webster	4 hr
Dec 19, 3:18 AM CST	Tornado Warning	SHV	Bienville, Lincoln	42 min
Dec 19, 3:53 AM CST	Tornado Warning	SHV	Bienville, Natchitoches	52 min
Dec 19, 6:26 AM CST	Tornado Warning	SHV	Grant	64 min

Nearby

Tornado Warnings in Louisiana, 2002 Every tornado warning in 2002 Tornadoes in 2002

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; radar from the NEXRAD Level II archive.