Alert archive / Arkansas / Tornado Warnings in 2009

Tornado Warning 30, NWS Tulsa, OK

June 12, 2009Benton County, Arkansas

NWS Tulsa, OK issued this tornado warning at Jun 12, 2009, 11:41 AM CDT for Benton County, Arkansas. It was in force for 49 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
Jun 12, 2009, 11:41 AM CDT (16:41 UTC)
Expired
Jun 12, 2009, 12:30 PM CDT
In force
49 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

County Benton County, AR

The radar

The Tulsa radar (KINX), 115 km from the middle of the area, began a volume at 16:42 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
Jun 12, 12:10 PM CDTTSTM WND GST 85Rogers, AR
Jun 12, 12:24 PM CDTTSTM WND DMGBella Vista, ARTREES AND POWERLINES 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
Jun 12, 7:46 AM CDTSevere Thunderstorm WatchSPC7 hr
Jun 12, 11:35 AM CDTSevere Thunderstorm Watch PDSSPC9 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 4.7 hours before the alert went out and 74 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, Springfield, MO at 12:00Z on 2009-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 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, Springfield, MO at 12:00Z on 2009-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 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
28 J/kg
Mixed-layer CIN
-191 J/kg
Mixed-layer LCL
843 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KTSA 121641
TORTSA
ARC007-121730-
/O.NEW.KTSA.TO.W.0030.090612T1641Z-090612T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
1141 AM CDT FRI JUN 12 2009

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN BENTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 1230 PM CDT

* AT 1140 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 5 MILES
  NORTHWEST OF GENTRY...MOVING EAST AT 35 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...GENTRY...
  DECATUR...GRAVETTE...HIWASSE...BELLA VISTA...BENTONVILLE AND
  ROGERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

&&

LAT...LON 3629 9408 3625 9458 3640 9460 3650 9433
      3650 9417
TIME...MOT...LOC 1641Z 255DEG 31KT 3632 9454

$$
3 follow-up statements
000 
WWUS54 KTSA 121656
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1156 AM CDT FRI JUN 12 2009

ARC007-121730-
/O.CON.KTSA.TO.W.0030.000000T0000Z-090612T1730Z/
BENTON AR-
1156 AM CDT FRI JUN 12 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT FOR CENTRAL
BENTON COUNTY...

AT 1156 AM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED 6 MILES SOUTHEAST OF GRAVETTE...MOVING EAST AT 30 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...VAUGHN...
HIWASSE...CENTERTON...MILLER...BELLA VISTA...BENTONVILLE AND ROGERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

&&

LAT...LON 3629 9408 3628 9444 3645 9446 3650 9433
      3650 9417
TIME...MOT...LOC 1656Z 253DEG 26KT 3635 9441

$$
000 
WWUS54 KTSA 121711
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1211 PM CDT FRI JUN 12 2009

ARC007-121730-
/O.CON.KTSA.TO.W.0030.000000T0000Z-090612T1730Z/
BENTON AR-
1211 PM CDT FRI JUN 12 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT FOR NORTHERN
BENTON COUNTY...

AT 1211 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED NEAR BELLA VISTA...MOVING NORTHEAST AT 30 MPH.

THE WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED
COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS

&&

LAT...LON 3636 9411 3633 9423 3650 9427 3650 9417
TIME...MOT...LOC 1711Z 234DEG 28KT 3643 9420

$$
000 
WWUS54 KTSA 121729
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1229 PM CDT FRI JUN 12 2009

ARC007-121738-
/O.EXP.KTSA.TO.W.0030.000000T0000Z-090612T1730Z/
BENTON AR-
1229 PM CDT FRI JUN 12 2009

...THE TORNADO WARNING FOR NORTHERN BENTON COUNTY EXPIRES AT 1230 PM
CDT...

THE THUNDERSTORM CIRCULATION THAT PROMPTED THE TORNADO WARNING HAS 
WEAKENED AND WAS MOVING OUT OF THE WARNED AREA....THEREFORE THE 
TORNADO WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 7 PM.

LAT...LON 3636 9411 3633 9423 3650 9427 3650 9417
TIME...MOT...LOC 1728Z 234DEG 28KT 3651 9407

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 11:06 AM CDTSevere Thunderstorm WarningTSABenton, Washington54 min
Jun 12, 11:36 AM CDTSevere Thunderstorm WarningTSABenton, Crawford, Madison, Washington54 min
Jun 12, 12:05 PM CDTSevere Thunderstorm WarningTSASebastian55 min
Jun 12, 12:16 PM CDTSevere Thunderstorm WarningTSACrawford, Sebastian59 min
Jun 12, 12:22 PM CDTSevere Thunderstorm WarningTSABenton, Carroll, Crawford, Franklin, Madison, Washington68 min
Jun 12, 12:41 PM CDTSevere Thunderstorm WarningTSACrawford, Franklin, Sebastian47 min
Jun 12, 1:04 PM CDTTornado WarningTSAFranklin26 min
Jun 12, 1:24 PM CDTSevere Thunderstorm WarningTSACarroll23 min

Nearby

Tornado Warnings in Arkansas, 2009Every tornado warning in 2009Tornadoes in 2009

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.