Alert archive / Oklahoma / Special Weather Statements in 2013

Special Weather Statement, NWS Tulsa, OK

August 6, 2013Craig County, Nowata County, Washington County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 6, 2013, 12:19 AM CDT for Craig County, Nowata County, Washington County, Oklahoma. It was in force for 56 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 6, 2013, 12:19 AM CDT (05:19 UTC)
Expired: Aug 6, 2013, 1:15 AM CDT
In force: 56 min
Issued by: NWS Tulsa, OK

Counties Craig County, OK, Nowata County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 59 km from the middle of the area, began a volume at 05:23 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 00:00Z, 5.3 hours before the alert went out and 144 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: 2876 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 723 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 311 m²/s²
Significant tornado parameter: 3.6
Supercell composite: 17.1

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, 12:01 AM CDT, 18 minutes earlier.

Area forecast discussion, Aug 6, 12:01 AM CDT, 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1201 AM CDT TUE AUG 6 2013

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM.
OR THE 6Z TAFS... STRONG CONVECTION ONGOING ACROSS SOUTHERN
KANSAS WILL SKIRT THE AREA OVER THE NEXT FEW HOURS. THERE IS A
POSSIBILITY THAT THIS ACTIVITY COULD AFFECT KBVO... KXNA OR KFYV.
IF IT DOES... HEAVY RAINFALL AND STRONG GUSTY WINDS CAN BE
EXPECTED. OTHER THAN THIS ACTIVITY... VFR CONDITIONS WILL PREVAIL
AT ALL TAF SITES OVER THE 24 HOUR FORECAST PERIOD.

&&

.PREV DISCUSSION... /ISSUED 925 PM CDT MON AUG 5 2013/

..UPDATE...

DISCUSSION...
STATIONARY FRONTAL BOUNDARY NEAR THE OK/KS BORDER ARCHING
SOUTHEASTWARD THROUGH NORTHERN AR REMAINS THE FOCUS FOR EVENING
CONVECTION. A LARGE AND INTENSE MCS IS UNDERWAY ACROSS CENTRAL
KS...WITH LATEST DATA SUGGESTING THE SOUTHERN PERIPHERY OF THIS
SYSTEM WILL SKIRT THE OK/KS BORDER. FURTHER EAST...A SMALLER
CONVECTIVE CLUSTER HAS MOVED INTO NORTH CENTRAL AR WITH TRAILING
LIGHT PRECIP EXTENDING INTO FAR NW AR. THIS ZONE OF CONVECTION MAY
PERSIST AND POSSIBLY FILL-IN AHEAD OF THE APPROACHING LARGER MCS.
EITHER WAY...POPS WERE INCREASED ALONG THE IMMEDIATE OK/KS BORDER
INTO EXTREME NW AR. A LIMITED SVR THREAT WILL ALSO REMAIN
OVERNIGHT HOWEVER THE BULK OF ORGANIZED SVR WEATHER IS LIKELY TO
REMAIN FURTHER NORTH INTO KS.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...HEAT ADVISORY UNTIL 7 PM TUESDAY FOR OKZ049-OKZ053-OKZ054-OKZ055-
     OKZ056-OKZ057-OKZ059-OKZ060-OKZ061-OKZ062-OKZ064-OKZ065-
     OKZ066-OKZ067-OKZ068-OKZ070-OKZ071-OKZ072-OKZ073-OKZ074-
     OKZ075-OKZ076.

AR...HEAT ADVISORY UNTIL 7 PM TUESDAY FOR ARZ019-ARZ020-ARZ029.

&&

AVIATION...06

Hazardous weather outlook, Aug 5, 5:11 PM CDT, 7 hours 8 minutes before

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In the hours before

Special weather statement, Aug 6, 12:19 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1219 AM CDT TUE AUG 6 2013

OKZ055>057-060615-
CRAIG OK-NOWATA OK-WASHINGTON OK-
1219 AM CDT TUE AUG 6 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 115 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     CRAIG...NOWATA AND WASHINGTON

AT 1220 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 10 MILES NORTH OF
COPAN...MOVING EAST AT 25 MPH. SOME LOCATIONS THAT WILL BE AFFECTED
BY THIS STORM INCLUDE...NOWATA...DELAWARE...LENAPAH...WANN...
WATOVA...NEW ALLUWE...BARTLESVILLE...DEWEY...COPAN...VINITA...WHITE
OAK...CENTRALIA...HOLLOW...PYRAMID CORNERS...BLUEJACKET...
CENTRAILIA...WELCH AND SOUTH COFFEYVILLE.

THIS STORM 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 3655 9502 3658 9533 3660 9533 3659 9544
      3664 9600 3700 9600 3701 9505
TIME...MOT...LOC 0520Z 282DEG 23KT 3703 9596

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 1:12 AM CDT	Special Weather Statement	TSA	Craig, Nowata, Ottawa	48 min
Aug 6, 3:50 AM CDT	River Flood Advisory	TSA	Nowata	36 hr
Aug 6, 4:04 AM CDT	Excessive Heat Warning	TSA	Choctaw, Haskell, Latimer, McIntosh, Pittsburg, Tulsa	40 hr
Aug 6, 4:04 AM CDT	Heat Advisory	TSA	Cherokee, Creek, Muskogee, Okfuskee, Okmulgee, Pawnee and 3 more	40 hr
Aug 6, 5:32 AM CDT	Special Weather Statement	TSA	Pawnee	28 min

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.