Alert archive / Louisiana / Tornado Warnings in 2007

Tornado Warning 8, NWS Shreveport, LA

February 24, 2007Claiborne Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Feb 24, 2007, 3:00 PM CST for Claiborne Parish, Louisiana. It was in force for 30 min. 2 reports 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: Feb 24, 2007, 3:00 PM CST (21:00 UTC)
Expired: Feb 24, 2007, 3:30 PM CST
In force: 30 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Claiborne Parish, LA

The radar

The Shreveport radar (KSHV), 101 km from the middle of the area, began a volume at 21:00 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
Feb 24, 3:05 PM CST	FUNNEL CLOUD	10 Ssw Junction City, LA	THOUGHT TO HAVE BRIEFLY TOUCHED DOWN AND CROSSED LA HWY 9 EAST OF SUMMERFIELD.
Feb 24, 3:05 PM CST	HAIL 1	10 Nw Bernice, LA	QUARTER SIZED HAIL REPORTED ALONG BARBER CREEK ROAD SOUTH OF HIGHWAY 9 ABOUT 2 MILES SOUTHEAST OF SUMMERFIELD. REPORT GATHERED FROM NWS STORM SURVEY.

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
Feb 24, 8:47 AM CST	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.0 hours before the alert went out and 92 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 242101
TORSHV
LAC027-242130-
/O.NEW.KSHV.TO.W.0008.070224T2100Z-070224T2130Z/

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

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  CLAIBORNE PARISH IN NORTHWEST LOUISIANA

* UNTIL 330 PM CST

* AT 300 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 16 MILES
  SOUTHWEST OF JUNCTION CITY...OR ABOUT 9 MILES NORTHEAST OF HOMER...
  MOVING NORTHEAST AT 60 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  SUMMERFIELD BY 305 PM CST 
  JUNCTION CITY BY 310 PM CST

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

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...
  CLAIBORNE PARISH IN NORTHWEST LOUISIANA
UNTIL 330 PM CST.

LAT...LON 3284 9309 3277 9272 3301 9272 3301 9286

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 9:59 AM CST	Severe Thunderstorm Warning	SHV	Caddo	61 min
Feb 24, 12:22 PM CST	Tornado Warning	SHV	Caddo, De Soto	20 min
Feb 24, 1:10 PM CST	Tornado Warning	SHV	Claiborne	50 min
Feb 24, 1:28 PM CST	Tornado Warning	SHV	Union	53 min
Feb 24, 2:24 PM CST	Tornado Warning	SHV	De Soto	36 min
Feb 24, 2:41 PM CST	Severe Thunderstorm Warning	SHV	Claiborne	49 min
Feb 24, 2:58 PM CST	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Red River, Webster	32 min
Feb 24, 3:11 PM CST	Tornado Warning	SHV	Union	49 min
Feb 24, 3:36 PM CST	Severe Thunderstorm Warning	SHV	Bienville	24 min
Feb 24, 4:19 PM CST	Severe Thunderstorm Warning	SHV	Union	56 min
Feb 24, 5:09 PM CST	Severe Thunderstorm Warning	SHV	Ouachita	51 min
Feb 24, 5:15 PM CST	Severe Thunderstorm Warning	SHV	Jackson	30 min

Nearby

Tornado Warnings in Louisiana, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.