Alert archive / Oklahoma / Special Weather Statements in 2011

Special Weather Statement, NWS Tulsa, OK

July 29, 2011Washington County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Jul 29, 2011, 3:50 PM CDT for Washington County, Oklahoma. It was in force for 25 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: Jul 29, 2011, 3:50 PM CDT (20:50 UTC)
Expired: Jul 29, 2011, 4:15 PM CDT
In force: 25 min
Issued by: NWS Tulsa, OK

County Washington County, OK

The radar

The Tulsa radar (KINX), 58 km from the middle of the area, began a volume at 20:50 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

Lamont, OK (KLMN), launched 12:00Z, 8.8 hours before the alert went out and 140 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: 139 J/kg
Mixed-layer CIN: -265 J/kg
Mixed-layer LCL: 1828 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -42 m²/s²
0-3 km storm-relative helicity: 39 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.

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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 Jul 29, 3:01 PM CDT, 49 minutes earlier.

Area forecast discussion, Jul 29, 3:01 PM CDT, 49 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
301 PM CDT FRI JUL 29 2011

.DISCUSSION...
SEMI PERMANENT HIGH PRESSURE ALOFT SEEMS TO HAVE INHABITED THE
REGION FOR THE SUMMER. THIS IS EXPECTED TO CONTINUE AT LEAST OVER
THE NEXT 7 DAYS. IN FACT... WE WILL BE SITUATED CLOSE TO THE CENTER
OF THE DOME OF HIGH PRESSURE... WHICH WILL MEAN VERY LITTLE AIR
MOVEMENT. THIS WILL PROVIDE LITTLE OPPORTUNITY FOR DAY TO DAY CHANGE
IN CONDITIONS.

THE BEST CHANCES FOR PRECIPITATION CONTINUE TO BE THIS AFTERNOON AND
AGAIN TOMORROW AFTERNOON. AT MOST... ONLY SCATTERED COVERAGE OF SHOWERS
AND THUNDERSTORMS IS EXPECTED. SLOW STORM MOVEMENT WILL AT LEAST
AID THOSE AREAS LUCKY ENOUGH TO EXPERIENCE A SHOWER TO MAXIMIZE
THE EFFECTS.

HIGH PRESSURE IS EXPECTED TO STRENGTHEN AFTER SATURDAY...
SQUELCHING RAIN CHANCES FOR THE REMAINDER OF THE FORECAST
PERIOD... AND CONTINUING THE WIDESPREAD HOT AND DRY CONDITIONS.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   79 101  79 103 /  20  20   0  10
FSM   77  99  77 100 /  50  30  10  10
MLC   77  99  76 101 /  40  20  10  10
BVO   73 101  74 101 /  20  30   0  10
FYV   72  95  72  95 /  50  30  10  10
BYV   73  93  72  93 /  50  40  10  10
MKO   76  99  77 101 /  40  30  10  10
MIO   76  97  75  99 /  30  30  10  10
F10   77 101  78 101 /  30  20  10  10
HHW   76  95  77  98 /  50  20  10  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...EXCESSIVE HEAT WARNING UNTIL 9 PM SUNDAY FOR OKZ049-OKZ053-
     OKZ054-OKZ055-OKZ056-OKZ057-OKZ058-OKZ059-OKZ060-OKZ061-
     OKZ062-OKZ063-OKZ064-OKZ065-OKZ066-OKZ067-OKZ068-OKZ070-
     OKZ071-OKZ072-OKZ073-OKZ074-OKZ075-OKZ076.

     EXCESSIVE HEAT WATCH FROM NOON MONDAY TO 9 PM THURSDAY FOR
     OKZ049-OKZ053-OKZ054-OKZ055-OKZ056-OKZ057-OKZ058-OKZ059-
     OKZ060-OKZ061-OKZ062-OKZ063-OKZ064-OKZ065-OKZ066-OKZ067-
     OKZ068-OKZ070-OKZ071-OKZ072-OKZ073-OKZ074-OKZ075-OKZ076.

     HEAT ADVISORY UNTIL 9 PM SUNDAY FOR OKZ069.

AR...HEAT ADVISORY UNTIL 9 PM SUNDAY FOR ARZ001-ARZ002-ARZ010-ARZ011.

     EXCESSIVE HEAT WARNING UNTIL 9 PM SUNDAY FOR ARZ019-ARZ020-
     ARZ029.

     EXCESSIVE HEAT WATCH FROM NOON MONDAY TO 9 PM THURSDAY FOR
     ARZ019-ARZ020-ARZ029.

&&

SHORT TERM...12
LONG TERM....06

Hazardous weather outlook, Jul 29, 1:06 PM CDT, 2 hours 44 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
106 PM CDT FRI JUL 29 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-301000-
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-
100 PM CDT FRI JUL 29 2011

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

.DAY ONE...TODAY AND TONIGHT.
SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...SOUTHEAST OKLAHOMA WEST CENTRAL AND NORTHWEST ARKANSAS.
	ONSET...MID AFTERNOON.

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

	AREA AT GREATEST RISK...URBAN AREAS.

FIRE WEATHER DANGER.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA.
	ONSET...ONGOING.

DISCUSSION...
HEAT WILL PERSIST TODAY AS AN UPPER LEVEL RIDGE PREVAILS.
HIGH TEMPERATURES THIS AFTERNOON WILL BE IN THE 95 TO 105
RANGE WITH HEAT INDEX VALUES FROM AROUND 100 TO 110 DEGREES.

THE ONLY RELIEF FROM THE HEAT WILL BE SCATTERED SHOWERS AND
THUNDERSTORMS. THOSE WILL BE MOST NUMEROUS OVER SOUTHEAST
OKLAHOMA AND WEST CENTRAL AND NORTHWEST ARKANSAS THIS AFTERNOON
INTO EARLY EVENING. A FEW ISOLATED STORMS MAY HAVE THE POTENTIAL
TO GENERATE 70 MPH DOWNBURST WINDS.

DROUGHT CONDITIONS OVER MUCH OF THE AREA HAVE RESULTED IN
CURED VEGETATION...WHICH IGNITES VERY EASILY. AREAS OF EASTERN
OKLAHOMA ALONG AND NORTH OF I-44 WILL BE MOST VULNERABLE FOR
FIRES THIS AFTERNOON AND EARLY EVENING AS RELATIVE HUMIDITY
VALUES SINK TO NEAR 20 PERCENT AND SOUTHEAST WINDS REACH 10
TO 15 MPH.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
LOCAL SPOTTER ACTIVATION MAY BE NEEDED.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
SATURDAY...THUNDERSTORM POTENTIAL...DANGEROUS HEAT POTENTIAL.
SUNDAY...DANGEROUS HEAT POTENTIAL.
MONDAY...DANGEROUS HEAT POTENTIAL.
TUESDAY...DANGEROUS HEAT POTENTIAL.
WEDNESDAY...DANGEROUS HEAT POTENTIAL.
THURSDAY...DANGEROUS HEAT POTENTIAL.

EXTENDED DISCUSSION...
THE HEAT WAVE WILL CONTINUE INTO NEXT WEEK AS THE UPPER LEVEL
RIDGE LINGERS OVER THE PLAINS. CURRENT INDICATIONS ARE THAT
NEXT WEEK WILL BE AS HOT...IF NOT HOTTER...THAN THE PAST FEW DAYS.
THE ONLY RELIEF FROM THE HEAT WILL BE ISOLATED AFTERNOON AND EVENING
THUNDERSTORMS OVER THE WEEKEND.

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

In the hours before

Special weather statement, Jul 29, 2:18 PM CDT, 1 hour 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
218 PM CDT FRI JUL 29 2011

ARZ010-019-OKZ069-291945-
ADAIR OK-CRAWFORD AR-WASHINGTON AR-
218 PM CDT FRI JUL 29 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 245 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     NORTHWESTERN CRAWFORD AND SOUTHWESTERN WASHINGTON

IN NORTHEAST OKLAHOMA
     SOUTHEASTERN ADAIR

AT 218 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES EAST OF
ODELL...MOVING SOUTH AT 5 MPH. SOME LOCATIONS THAT WILL BE AFFECTED
BY THIS STORM INCLUDE...ODELL...BLACKBURN...STRICKLER...MORROW...
CLYDE...CANEHILL...NATURAL DAM...LEE CREEK AND DEVILS DEN STATE PARK.

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 3583 9414 3559 9434 3574 9459 3592 9441
TIME...MOT...LOC 1918Z 013DEG 3KT 3578 9436

Special weather statement, Jul 29, 3:23 PM CDT, 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
323 PM CDT FRI JUL 29 2011

OKZ056-057-292100-
CRAIG OK-NOWATA OK-
323 PM CDT FRI JUL 29 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 400 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHWESTERN CRAIG AND NORTHEASTERN NOWATA

AT 323 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTHEAST
OF SOUTH COFFEYVILLE...MOVING NORTHWEST AT 5 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...SOUTH COFFEYVILLE.

THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.

LAT...LON 3699 9527 3687 9551 3695 9570 3701 9565
      3701 9529
TIME...MOT...LOC 2023Z 135DEG 4KT 3696 9554

Special weather statement, Jul 29, 3:25 PM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
325 PM CDT FRI JUL 29 2011

OKZ054-055-292100-
OSAGE OK-WASHINGTON OK-
325 PM CDT FRI JUL 29 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 400 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     EASTERN OSAGE AND WASHINGTON

AT 325 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTHWEST
OF BARTLESVILLE...MOVING SOUTHEAST AT 5 MPH. SOME LOCATIONS THAT WILL
BE AFFECTED BY THIS STORM INCLUDE...OKESA AND BARTLESVILLE.

THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3669 9619 3678 9600 3668 9588 3655 9605
TIME...MOT...LOC 2025Z 321DEG 5KT 3669 9603

Special weather statement, Jul 29, 3:26 PM CDT, 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
326 PM CDT FRI JUL 29 2011

OKZ062-292100-
MAYES OK-
326 PM CDT FRI JUL 29 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 400 PM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHEAST OKLAHOMA
     EASTERN MAYES

AT 327 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES SOUTH OF
SPAVINAW STATE PARK...STATIONARY. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...SALINA...SPAVINAW...STRANG...
SNOWDALE STATE PARK AND SPAVINAW STATE PARK.

THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3643 9502 3629 9500 3628 9520 3642 9521
TIME...MOT...LOC 2027Z 104DEG 1KT 3636 9508

Special weather statement, Jul 29, 3:50 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
350 PM CDT FRI JUL 29 2011

OKZ054-055-292115-
OSAGE OK-WASHINGTON OK-
350 PM CDT FRI JUL 29 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 415 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     EASTERN OSAGE AND WASHINGTON

AT 350 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES NORTHWEST
OF OCHELATA...MOVING EAST AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...RAMONA AND OCHELATA.

THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3664 9581 3662 9581 3647 9588 3659 9616
      3675 9602
TIME...MOT...LOC 2050Z 288DEG 7KT 3662 9601

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 4:06 AM CDT	Excessive Heat Watch	TSA	Adair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more	11 days
Jul 29, 3:23 PM CDT	Special Weather Statement	TSA	Nowata	37 min
Jul 29, 3:25 PM CDT	Special Weather Statement	TSA	Washington	35 min
Jul 29, 3:26 PM CDT	Special Weather Statement	TSA	Mayes	34 min
Jul 29, 4:21 PM CDT	Special Weather Statement	TSA	Cherokee	24 min
Jul 29, 4:33 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes	42 min
Jul 29, 5:05 PM CDT	Special Weather Statement	TSA	Delaware	25 min
Jul 29, 5:17 PM CDT	Special Weather Statement	TSA	Rogers	28 min
Jul 29, 5:23 PM CDT	Special Weather Statement	TSA	LeFlore	67 min
Jul 29, 5:38 PM CDT	Special Weather Statement	TSA	Cherokee	52 min
Jul 29, 5:41 PM CDT	Special Weather Statement	TSA	Ottawa	34 min
Jul 29, 6:02 PM CDT	Special Weather Statement	TSA	Pittsburg	28 min
Jul 29, 6:21 PM CDT	Special Weather Statement	TSA	Latimer	24 min
Jul 29, 2:18 PM CDT	Special Weather Statement	TSA	Crawford	27 min
Jul 29, 5:14 PM CDT	Special Weather Statement	TSA	Johnson	31 min
Jul 29, 5:40 PM CDT	Special Weather Statement	TSA	Benton	35 min

Nearby

Special Weather Statements in Oklahoma, 2011 Every special weather statement in 2011

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.