Alert archive / Arkansas / Tornado Warnings in 2008

Tornado Warning 49, NWS Shreveport, LA

May 10, 20084 counties in Arkansas

NWS Shreveport, LA issued this tornado warning at May 10, 2008, 9:55 PM CDT for 4 counties in Arkansas. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 10, 2008, 9:55 PM CDT (02:55 UTC)
Expired: May 10, 2008, 10:30 PM CDT
In force: 35 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Columbia County, AR, Hempstead County, AR, Lafayette County, AR, Nevada County, AR

The radar

The Shreveport radar (KSHV), 120 km from the middle of the area, began a volume at 02:55 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.

What was reported inside it

Time	Report	Where	Remark
May 10, 10:00 PM CDT	TSTM WND DMG	Stamps, AR	TREE DOWN ON A POWER LINE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 10, 6:51 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 2.9 hours before the alert went out and 113 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: 2721 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 833 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 13.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 110255
TORSHV
ARC027-057-073-099-110330-
/O.NEW.KSHV.TO.W.0049.080511T0255Z-080511T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
955 PM CDT SAT MAY 10 2008

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN COLUMBIA COUNTY IN SOUTHWEST ARKANSAS...
  THIS INCLUDES THE CITIES OF...WALDO...MCNEIL...MAGNOLIA...
  EXTREME SOUTHEASTERN HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS...
  NORTHEASTERN LAFAYETTE COUNTY IN SOUTHWEST ARKANSAS...
  THIS INCLUDES THE CITY OF STAMPS...
  SOUTHWESTERN NEVADA COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 1030 PM CDT

* AT 955 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR BUCKNER...
  OR ABOUT 6 MILES NORTHEAST OF STAMPS...MOVING SOUTHEAST AT 59 MPH.

* THE TORNADO WILL BE NEAR...
  WALDO BY 1000 PM CDT...
  MCNEIL AND 6 MILES NORTH OF MAGNOLIA BY 1005 PM CDT...
  VILLAGE BY 1015 PM CDT...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SUNDAY MORNING FOR
SOUTHWESTERN ARKANSAS.

LAT...LON 3343 9308 3339 9308 3340 9297 3308 9297
      3331 9355 3355 9346
TIME...MOT...LOC 0255Z 291DEG 51KT 3341 9335

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 7:46 PM CDT	Tornado Warning	SHV	Little River, Sevier	59 min
May 10, 8:37 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Nevada	53 min
May 10, 8:46 PM CDT	Tornado Warning	SHV	Hempstead, Howard, Little River, Miller, Sevier	44 min
May 10, 8:50 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	40 min
May 10, 8:56 PM CDT	Tornado Warning	SHV	Hempstead, Nevada	49 min
May 10, 9:25 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Miller, Sevier	46 min
May 10, 9:30 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Lafayette, Nevada	60 min
May 10, 9:52 PM CDT	Severe Thunderstorm Warning	SHV	Columbia, Lafayette, Miller, Union	53 min
May 10, 10:00 PM CDT	Severe Thunderstorm Warning	SHV	Union	60 min
May 10, 10:57 PM CDT	Severe Thunderstorm Warning	SHV	Union	63 min

Nearby

Tornado Warnings in Arkansas, 2008 Every tornado warning in 2008 Tornadoes in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.