Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Tulsa, OK

August 30, 2012Pittsburg County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 30, 2012, 5:21 PM CDT for Pittsburg County, Oklahoma. It was in force for 54 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 30, 2012, 5:21 PM CDT (22:21 UTC)
Expired
Aug 30, 2012, 6:15 PM CDT
In force
54 min
Issued by
NWS Tulsa, OK

County Pittsburg County, OK

The radar

The Western Arkansas radar (KSRX), 101 km from the middle of the area, began a volume at 22:22 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

Norman, OK (KOUN), launched 12:00Z, 10.4 hours before the alert went out and 176 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 12:00Z on 2012-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2012-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2065 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
172 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.

416 
WWUS84 KTSA 302221
SPSTSA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
521 PM CDT THU AUG 30 2012

OKZ069>075-302315-
ADAIR OK-HASKELL OK-LATIMER OK-MCINTOSH OK-MUSKOGEE OK-PITTSBURG
OK-SEQUOYAH OK-
521 PM CDT THU AUG 30 2012

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 615 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     WESTERN HASKELL...EASTERN MCINTOSH...PITTSBURG AND NORTHWESTERN
     LATIMER

IN EAST CENTRAL OKLAHOMA
     SOUTHEASTERN MUSKOGEE AND WESTERN SEQUOYAH

IN NORTHEAST OKLAHOMA
     SOUTHWESTERN ADAIR

AT 520 PM CDT...A BAND OF SHOWERS ON THE OUTER FRINGES OF TROPICAL 
DEPRESSION ISSAC WERE LOCATED ALONG A LINE EXTENDING FROM MARBLE 
CITY TO TAMAHA TO STIGLER TO 4 MILES SOUTH OF FEATHERSTON TO 8 MILES 
EAST OF BLANCO...MOVING WEST AT 30 MPH. SOME LOCATIONS THAT WILL BE 
AFFECTED BY THESE SHOWERS 
INCLUDE...STIGLER...ENTERPRISE...WHITEFIELD...TAMAHA...MC 
KEY...VIAN...GORE...MARBLE 
CITY...BOX...EUFAULA...ONAPA...MCALESTER...KIOWA...PITTSBURG...BLANCO
...ASHLAND...SAVANNA...HARTSHORNE...HAILEYVILLE...DOW...HAYWOOD...BAC
HE...ALDERSON...KREBS...ARPELAR...BLOCKER...FEATHERSTON...CROWDER...Q
UINTON...INDIANOLA...CANADIAN...BRIARTOWN...PORUM...WARNER...WEBBERS 
FALLS...ARROWHEAD STATE PARK...LAKE TENKILLER STATE PARK AND BRUSHY 
LAKE STATE PARK.

THESE SHOWERS WILL BE CAPABLE OF PRODUCING WIND GUSTS OF 40 TO 50 
MPH.

LAT...LON 3513 9585 3529 9567 3557 9543 3564 9492
      3564 9481 3566 9481 3568 9463 3529 9505
      3505 9538 3470 9561 3463 9589 3468 9589
      3468 9610 3480 9610
TIME...MOT...LOC 2220Z 072DEG 25KT 3558 9482 3541 9499
          3527 9516 3502 9549 3474 9565

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 3:32 PM CDTWind AdvisoryTSAAdair, Haskell, Latimer12 hr
Aug 30, 6:24 PM CDTSpecial Weather StatementTSAMcIntosh51 min
Aug 30, 4:16 PM CDTSpecial Weather StatementTSAFranklin, Sebastian59 min
Aug 30, 6:04 PM CDTSpecial Weather StatementTSACarroll, Madison56 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.