Alert archive / Arkansas / Tornado Warnings in 2002

Tornado Warning 25, NWS Shreveport, LA

December 19, 2002Union County, Arkansas

NWS Shreveport, LA issued this tornado warning at Dec 19, 2002, 12:00 AM CST for Union County, Arkansas. It was in force for 30 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, 12:00 AM CST (06:00 UTC)
Expired: Dec 19, 2002, 12:30 AM CST
In force: 30 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Union County, AR

The radar

The Shreveport radar (KSHV), 147 km from the middle of the area, began a volume at 06:01 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 18, 8:55 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 6.0 hours before the alert went out and 138 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.

288 
WFUS54 KSHV 190600
TORSHV
ARC139-190630-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1158 PM CST WED DEC 18 2002

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  UNION COUNTY IN SOUTH CENTRAL ARKANSAS

* UNTIL 1230 AM CST

* AT 1158 PM CST...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A TORNADO OVER CENTRAL UNION COUNTY...OR ABOUT 8
  MILES SOUTHEAST OF EL DORADO...MOVING NORTHEAST AT 40 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  WILMINGTON AT 1210 AM CST

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...
  UNION COUNTY IN SOUTH CENTRAL ARKANSAS
UNTIL 1230 AM CST.

LAT...LON 3318 9268 3304 9255 3322 9226 3334 9250

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 18, 8:14 PM CST	Tornado Warning	SHV	Columbia	46 min
Dec 18, 9:06 PM CST	Severe Thunderstorm Warning	SHV	Columbia	54 min
Dec 18, 9:21 PM CST	Flash Flood Warning	SHV	Columbia, Lafayette	4 hr
Dec 18, 11:24 PM CST	Severe Thunderstorm Warning	SHV	Union	66 min
Dec 19, 1:16 AM CST	Flash Flood Warning	SHV	Union	4 hr
Dec 19, 2:10 AM CST	Severe Thunderstorm Warning	SHV	Union	35 min

Nearby

Tornado Warnings in Arkansas, 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.