Alert archive / Oklahoma / Tornado Warnings in 2006

Tornado Warning 9, NWS Shreveport, LA

September 21, 2006McCurtain County, Oklahoma

NWS Shreveport, LA issued this tornado warning at Sep 21, 2006, 9:02 PM CDT for McCurtain County, Oklahoma. It was in force for 58 min. 5 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
Sep 21, 2006, 9:02 PM CDT (02:02 UTC)
Expired
Sep 21, 2006, 10:00 PM CDT
In force
58 min
Issued by
NWS Shreveport, LA
Area
Counties, with a storm outline in the text

County McCurtain County, OK

The radar

The Western Arkansas radar (KSRX), 135 km from the middle of the area, began a volume at 02:02 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

TimeReportWhereRemark
Sep 21, 9:23 PM CDTTSTM WND DMG1 S Pickens, OKA FEW TREES DOWN.
Sep 21, 9:23 PM CDTTORNADOPickens, OKTORNADO ON GROUND.
Sep 21, 9:50 PM CDTHAIL 0.75Battiest, OK
Sep 21, 10:02 PM CDTTSTM WND DMG15 N Broken Bow, OKTWO DOZEN TREES DOWNED NEAR AND JUST EAST OF THE COMMUNITY OF MT HERMAN. TWO STRUCTURES ALSO SUFFERED DAMAGE.
Sep 21, 10:02 PM CDTTORNADO10 N Broken Bow, OKTREES DOWN.

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.

IssuedProductOfficeLasted
Sep 21, 2:51 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.0 hours before the alert went out and 225 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2006-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1270 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2006-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1270 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1512 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
254 m²/s²
Significant tornado parameter
0.5
Supercell composite
6.6

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 220205
TORSHV
OKC089-220300-
/O.NEW.KSHV.TO.W.0009.060922T0202Z-060922T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
902 PM CDT THU SEP 21 2006

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 1000 PM CDT

* AT 902 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 11 MILES
  NORTHWEST OF RINGOLD...OR 10 MILES WEST OF PICKENS...MOVING
  EAST AT 40 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  PICKENS BY 920 PM CDT
  BATTIEST BY 925 PM CDT
  BETHEL BY 930 PM CDT
  SMITHVILLE BY 955 PM CDT

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. 

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY 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...
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA
UNTIL 1000 PM CDT.

LAT...LON 3435 9580 3417 9578 3412 9511 3412 9450
      3450 9448 3449 9500

$$
1 follow-up statement
000 
WWUS54 KSHV 220253
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
948 PM CDT THU SEP 21 2006

OKC089-220300-
/O.CON.KSHV.TO.W.0009.000000T0000Z-060922T0300Z/
MCCURTAIN OK-
948 PM CDT THU SEP 21 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
MCCURTAIN COUNTY...

AT 948 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR IN SHREVEPORT
CONTINUED TO INDICATE A TORNADIC THUNDERSTORM NEAR BETHYL...MOVING
EAST AT 40 MPH. A TORNADO WAS REPORTED ON THE GROUND EARLIER NEAR
PICKENS OKLAHOMA. THIS TORNADO WILL EFFECT THE TOWN OF BETHEL AND
MOVE NEAR SMITHVILLE AND WATSON OKLAHOMA. IF YOU LIVE IN NORTHERN
MCCURTAIN COUNTY...TAKE COVER IMMEDIATELY. THIS IS A DANGEROUS 
THUNDERSTORM.  

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT FRIDAY MORNING
FOR SOUTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA. 

LAT...LON 3435 9580 3417 9578 3412 9511 3412 9450
      3450 9448 3449 9500

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 9:55 PM CDTTornado WarningSHVMcCurtain35 min
Sep 22, 3:43 AM CDTLake Wind AdvisorySHVMcCurtain15 hr

Nearby

Tornado Warnings in Oklahoma, 2006Every tornado warning in 2006Tornadoes in 2006

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.