Alert archive / Oklahoma / Special Weather Statements in 2013

Special Weather Statement, NWS Tulsa, OK

August 7, 2013Osage County, Pawnee County, Washington County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 7, 2013, 1:06 AM CDT for Osage County, Pawnee County, Washington County, Oklahoma. It was in force for 39 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 7, 2013, 1:06 AM CDT (06:06 UTC)
Expired: Aug 7, 2013, 1:45 AM CDT
In force: 39 min
Issued by: NWS Tulsa, OK

Counties Osage County, OK, Pawnee County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 76 km from the middle of the area, began a volume at 06:08 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 00:00Z, 6.1 hours before the alert went out and 230 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: 860 J/kg
Mixed-layer CIN: -203 J/kg
Mixed-layer LCL: 1527 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 205 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this special weather statement went out at Aug 6, 11:52 PM CDT, 1 hour 14 minutes earlier.

Area forecast discussion, Aug 6, 11:52 PM CDT, 1 hour 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1152 PM CDT TUE AUG 6 2013

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM.

FOR THE 6Z TAFS... THUNDERSTORMS CURRENTLY MOVING EASTWARD ACROSS
NORTHEAST OKLAHOMA COULD TEMPORARILY AFFECT KBVO... KTUL AND KRVS
OVER THE NEXT 3 HOURS OR SO. OTHERWISE... VFR CONDITIONS ARE
EXPECTED TO PREVAIL AT ALL TAF SITES THROUGH THE 24 HOUR FORECAST
PERIOD. THUNDERSTORM CHANCES WILL INCREASE ACROSS NORTHEAST
OKLAHOMA AND POSSIBLY NORTHWEST ARKANSAS AGAIN WEDNESDAY EVENING.

&&

.PREV DISCUSSION... /ISSUED 926 PM CDT TUE AUG 6 2013/

..UPDATE...

DISCUSSION...
ORGANIZED MCS UNDERWAY ACROSS NW OK / SW KS TILL CONTINUE TO TRACK
E-NE PER LATEST SHORT RANGE DATA. THIS ACTIVITY WILL SKIRT ACROSS
LOCATIONS NEAR THE OK/KS BORDER...SIMILAR TO RECENT NIGHTS.
UPDATED FORECAST WILL INCREASE PRECIP CHANCES ALONG THIS
ZONE...WHILE MILD OVERNIGHT LOW TEMPS LOOK ON TRACK. THUNDERSTORM
OUTFLOW COULD COOL NORTHERN LOCATIONS BUT UNCERTAINTY IN COVERAGE
OF PRECIP WARRANTS THE MORE MILD OVERNIGHT LOW TEMPS.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...EXCESSIVE HEAT WARNING UNTIL 7 PM WEDNESDAY FOR OKZ053-OKZ060-
     OKZ071-OKZ073-OKZ074-OKZ075-OKZ076.

     HEAT ADVISORY FROM 7 AM WEDNESDAY TO 7 PM WEDNESDAY FOR OKZ049-
     OKZ061-OKZ064-OKZ065-OKZ066-OKZ067-OKZ070-OKZ072.

AR...HEAT ADVISORY FROM 7 AM WEDNESDAY TO 7 PM WEDNESDAY FOR ARZ019-
     ARZ020.

     EXCESSIVE HEAT WARNING UNTIL 7 PM WEDNESDAY FOR ARZ029.

&&

AVIATION...06

Hazardous weather outlook, Aug 6, 9:46 PM CDT, 3 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
946 PM CDT TUE AUG 6 2013

ARZ001-002-010-011-019-020-029-OKZ049-053>076-071000-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
945 PM CDT TUE AUG 6 2013

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA...PRIMARILY NEAR THE OKLAHOMA
        KANSAS BORDER.
	ONSET...AFTER MIDNIGHT.

DANGEROUS HEAT.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
A LARGE THUNDERSTORM COMPLEX CURRENTLY ACROSS NORTHWEST OKLAHOMA
WILL CONTINUE TO TRACK EAST-NORTHEAST OVERNIGHT.  A PORTION
OF THESE THUNDERSTORMS WILL LIKELY PASS ACROSS NORTHEAST OKLAHOMA
...WITH THE HIGHEST CHANCES BEING TOWARD THE OKLAHOMA KANSAS
BORDER.  A LIMITED RISK OF SEVERE WINDS WILL ACCOMPANY THESE
STORMS...ALONG WITH PERIODS OF HEAVY RAINFALL.

ADDITIONALLY...WARM OVERNIGHT LOW TEMPERATURES WILL MAINTAIN
THE ONGOING HEAT STRESS ACROSS THE REGION...ESPECIALLY ACROSS
SOUTHEAST OKLAHOMA AND WITH THE TULSA AND FORT SMITH METRO AREAS.
TEMPERATURES WILL QUICKLY WARM AFTER SUNRISE WEDNESDAY.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
LOCAL SPOTTER ACTIVATION MAY BE NEEDED ACROSS NORTHEAST
OKLAHOMA LATER TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
WEDNESDAY THROUGH SATURDAY...SEVERE THUNDERSTORM POTENTIAL...
DANGEROUS HEAT POTENTIAL.
SUNDAY AND MONDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
A WEAK FRONTAL BOUNDARY WILL PUSH INTO NORTHEAST OKLAHOMA LATE
WEDNESDAY...AND MOVE ONLY SLOWLY SOUTHWARD THROUGH SATURDAY.
THIS BOUNDARY WILL SERVE AS A FOCUS FOR CONTINUED THUNDERSTORM
CHANCES...WHILE LOCATIONS NEAR AND SOUTH OF THE BOUNDARY WILL
CONTINUE TO BE HOT AND HUMID.  COOLER TEMPERATURES AND CONTINUED
THUNDERSTORM CHANCES WILL PREVAIL FOR LATE IN THE WEEKEND
INTO EARLY NEXT WEEK.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Special weather statement, Aug 7, 12:21 AM CDT, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1221 AM CDT WED AUG 7 2013

OKZ054-059-070600-
OSAGE OK-PAWNEE OK-
1221 AM CDT WED AUG 7 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 100 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     WESTERN OSAGE AND PAWNEE

AT 1222 AM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 18 MILES WEST OF GRAINOLA TO 15 MILES WEST OF
RALSTON...MOVING EAST AT 30 MPH. SOME LOCATIONS THAT WILL BE AFFECTED
BY THESE STORMS INCLUDE...SHIDLER...FAIRFAX...BURBANK...APPERSON...
WEBB CITY...FORAKER...GRAINOLA AND RALSTON.

THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT
WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3700 9648 3638 9654 3650 9704 3654 9699
      3656 9690 3659 9692 3658 9700 3658 9705
      3670 9704 3669 9695 3675 9689 3675 9683
      3677 9682 3679 9676 3701 9675
TIME...MOT...LOC 0522Z 270DEG 26KT 3698 9694 3652 9698

Special weather statement, Aug 7, 1:06 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
106 AM CDT WED AUG 7 2013

OKZ054-055-059-070645-
OSAGE OK-PAWNEE OK-WASHINGTON OK-
106 AM CDT WED AUG 7 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 145 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     OSAGE...PAWNEE AND WASHINGTON

AT 106 AM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 12 MILES NORTHWEST OF BIGHEART TO 14 MILES SOUTHWEST
OF PAWNEE...MOVING EAST AT 30 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THESE STORMS INCLUDE...PAWHUSKA...OSAGE...HOMINY...
AVANT...WYNONA...WOLCO...FAIRFAX...BARNSDALL...PERSHING...TALLANT...
NELAGONEY...OKESA...PEARSONIA...BIGHEART...HULAH...SKIATOOK...
BARTLESVILLE...OCHELATA...DEWEY...COPAN...PAWNEE...JENNINGS...
TERLTON...HALLETT...MARAMEC...BLACKBURN...SKEDEE...CLEVELAND...
RALSTON...WESTPORT...OSAGE HILLS STATE PARK...WALNUT CREEK STATE
PARK...WAH SHA SHE STATE PARK...BARTLESVILLE MUNICIPAL AIRPORT AND
SUNSET LAKE.

THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT
WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3701 9580 3642 9597 3642 9600 3636 9600
      3619 9607 3616 9683 3624 9682 3624 9692
      3626 9693 3701 9643
TIME...MOT...LOC 0606Z 292DEG 24KT 3698 9635 3618 9695

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 12:21 AM CDT	Special Weather Statement	TSA	Osage	39 min
Aug 7, 2:30 AM CDT	Special Weather Statement	TSA	Craig, Ottawa	60 min
Aug 7, 3:49 AM CDT	River Flood Warning	TSA	Nowata	65 hr

Nearby

Special Weather Statements in Oklahoma, 2013 Every special weather statement in 2013

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.