Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Tulsa, OK

August 19, 2012Adair County, Cherokee County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 19, 2012, 3:21 PM CDT for Adair County, Cherokee County, Oklahoma. It was in force for 24 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
Aug 19, 2012, 3:21 PM CDT (20:21 UTC)
Expired
Aug 19, 2012, 3:45 PM CDT
In force
24 min
Issued by
NWS Tulsa, OK

Counties Adair County, OK, Cherokee County, OK

The radar

The Western Arkansas radar (KSRX), 51 km from the middle of the area, began a volume at 20:23 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 nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.4 hours before the alert went out and 145 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 2012-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 478 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 2012-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
478 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
975 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

312 
WWUS84 KTSA 192021
SPSTSA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
321 PM CDT SUN AUG 19 2012

ARZ010-019-OKZ068-069-192045-
ADAIR OK-CHEROKEE OK-CRAWFORD AR-WASHINGTON AR-
321 PM CDT SUN AUG 19 2012

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 345 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     NORTHERN CRAWFORD AND SOUTHWESTERN WASHINGTON

IN EAST CENTRAL OKLAHOMA
     SOUTHEASTERN CHEROKEE

IN NORTHEAST OKLAHOMA
     SOUTHERN ADAIR

AT 322 PM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 4 MILES SOUTHEAST OF TAHLEQUAH TO 4 MILES NORTHWEST OF
MARIETTA TO ODELL...MOVING SOUTHEAST AT 15 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THESE STORMS INCLUDE...MARIETTA...STILWELL...
BUNCH...TAHLEQUAH...COOKSON...ELDON...ODELL...STRICKLER...MORROW...
MOUNTAINBURG...NATURAL DAM...CHESTER...LEE CREEK...CHEROKEE LANDING
STATE PARK...ADAIR STATE PARK AND DEVILS DEN STATE PARK.

THESE STORMS WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH.

LAT...LON 3558 9407 3564 9440 3564 9497 3591 9505
      3595 9478 3583 9427
TIME...MOT...LOC 2022Z 313DEG 13KT 3585 9493 3589 9469
          3577 9439

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 2:33 PM CDTSpecial Weather StatementTSACherokee27 min
Aug 19, 2:57 PM CDTSpecial Weather StatementTSAAdair, Cherokee33 min
Aug 19, 3:30 PM CDTSpecial Weather StatementTSASequoyah30 min
Aug 19, 3:43 PM CDTSpecial Weather StatementTSAWagoner32 min
Aug 19, 3:57 PM CDTSevere Thunderstorm WarningTSASequoyah33 min
Aug 19, 4:26 PM CDTSpecial Weather StatementTSASequoyah34 min
Aug 19, 5:43 PM CDTSpecial Weather StatementTSAHaskell32 min
Aug 19, 2:35 PM CDTSpecial Weather StatementTSAMadison25 min
Aug 19, 2:47 PM CDTSpecial Weather StatementTSAFranklin28 min
Aug 19, 3:06 PM CDTSpecial Weather StatementTSACrawford24 min
Aug 19, 3:46 PM CDTSpecial Weather StatementTSACrawford29 min

Nearby

Special Weather Statements in Oklahoma, 2012Every special weather statement in 2012

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.