Alert archive / Arkansas / Tornado Warnings in 2007

Tornado Warning 3, NWS Shreveport, LA

February 24, 2007Columbia County, Union County, Arkansas

NWS Shreveport, LA issued this tornado warning at Feb 24, 2007, 11:28 AM CST for Columbia County, Union County, Arkansas. It was in force for 47 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: Feb 24, 2007, 11:28 AM CST (17:28 UTC)
Expired: Feb 24, 2007, 12:15 PM CST
In force: 47 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

Counties Columbia County, AR, Union County, AR

The radar

The Shreveport radar (KSHV), 135 km from the middle of the area, began a volume at 17:28 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
Feb 24, 8:47 AM CST	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 5.5 hours before the alert went out and 126 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: 144 J/kg
Mixed-layer CIN: -313 J/kg
Mixed-layer LCL: 511 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 513 m²/s²
0-3 km storm-relative helicity: 661 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.2

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 241729
TORSHV
ARC027-139-241815-
/O.NEW.KSHV.TO.W.0003.070224T1728Z-070224T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1128 AM CST SAT FEB 24 2007

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

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

* UNTIL 1215 PM CST

* AT 1124 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 28 MILES
  SOUTHWEST OF SMACKOVER...OR ABOUT 17 MILES SOUTHEAST OF MAGNOLIA...
  MOVING NORTHEAST AT 55 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  SMACKOVER AND NORPHLET BY 1155 AM CST

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  UNION COUNTY IN SOUTH CENTRAL ARKANSAS
  COLUMBIA COUNTY IN SOUTHWEST ARKANSAS
UNTIL 1215 PM CST.

LAT...LON 3335 9265 3337 9263 3337 9255 3335 9254
      3303 9297 3303 9306 3311 9315 3337 9287
      3339 9272

$$

17

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 5:34 AM CST	Red Flag Warning	SHV	Howard, Little River, Sevier	12 hr
Feb 24, 10:44 AM CST	Tornado Warning	SHV	Hempstead	31 min
Feb 24, 10:59 AM CST	Tornado Warning	SHV	Nevada	46 min
Feb 24, 11:20 AM CST	Severe Thunderstorm Warning	SHV	Columbia, Union	55 min
Feb 24, 12:15 PM CST	Severe Thunderstorm Warning	SHV	Lafayette, Nevada	60 min
Feb 24, 1:28 PM CST	Tornado Warning	SHV	Union	53 min
Feb 24, 3:11 PM CST	Tornado Warning	SHV	Union	49 min
Feb 24, 3:57 PM CST	Severe Thunderstorm Warning	SHV	Union	33 min

Nearby

Tornado Warnings in Arkansas, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.