Alert archive / Oklahoma / Special Weather Statements in 2009

Special Weather Statement, NWS Tulsa, OK

August 10, 2009Okmulgee County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 10, 2009, 6:49 PM CDT for Okmulgee County, Oklahoma. It was in force for 26 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 10, 2009, 6:49 PM CDT (23:49 UTC)
Expired: Aug 10, 2009, 7:15 PM CDT
In force: 26 min
Issued by: NWS Tulsa, OK

County Okmulgee County, OK

The radar

The Tulsa radar (KINX), 68 km from the middle of the area, began a volume at 23:49 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, 11.8 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-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: 1877 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 1105 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 70 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.

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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 10, 6:40 PM CDT, 9 minutes earlier.

Area forecast discussion, Aug 10, 6:40 PM CDT, 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
640 PM CDT MON AUG 10 2009

...AVIATION...

.DISCUSSION...
CLUSTERS OF STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO IMPACT
MUCH OF NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS...ESPECIALLY IN THE
TUL/RVS AREAS WHERE GUSTY WINDS TO 40 KTS AND MVFR CONDITIONS WILL
BE POSSIBLE IN THE HEAVIER DOWNPOURS.  THUNDERSTORM COMPLEX
SHOULD BEGIN TO SLOWLY WEAKEN OVERNIGHT AS ACTIVITY PUSHES EAST
SOUTHEAST...POSSIBLY MOVING INTO THE MLC/FSM AREAS LATER TONIGHT.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
AR...NONE.

&&

AVIATION...12

Hazardous weather outlook, Aug 10, 5:07 PM CDT, 1 hour 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
507 PM CDT MON AUG 10 2009

ARZ001-002-010-011-019-020-029-OKZ049-053>076-111000-
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-
507 PM CDT MON AUG 10 2009

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

.DAY ONE...TODAY AND TONIGHT.
TORNADO.
RISK...NIL.

SEVERE THUNDERSTORM.
RISK...SIGNIFICANT.
AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
ONSET...ONGOING.

AREA AT GREATEST RISK...NORTH OF INTERSTATE 40.

FLASH FLOOD.
RISK...LIMITED.
AREA...NORTH OF INTERSTATE 40.
ONSET...THIS EVENING.

HEAVY RAIN.
RISK...LIMITED.
AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
ONSET...ONGOING.

DANGEROUS HEAT.
RISK...ELEVATED.
AREA...NORTHEAST OKLAHOMA.
ONSET...ONGOING.

DISCUSSION...
A MYRIAD OF OUTFLOW BOUNDARIES ARE ACTING ON STRONG INTSTABILITY
TO PRODUCE STRONG TO SEVERE THUNDERSTORMS ACROSS PRIMARILY NORTHEAST
OKLAHOMA AND THE NORTHWEST CORNER OF ARKANSAS THIS AFTERNOON.  THE
SHEAR IS RELATIVELY WEAK SO THE THUNDERSTORMS ARE OF A PULSE TO
WEAKLY ORGANIZED MULTICELL CHARACTER.  DAMAGING WINDS ARE THE
PRIMARY RISK BUT SOME HAIL WILL BE POSSIBLE.

THE THUNDERSTORMS ARE ALSO CAPABLE OF PRODUCING HEAVY RAIN. LOCALIZED
FLASH FLOODING WILL BE POSSIBLE.  IF THE THUNDERSTORMS ORGANIZE MORE
AS A COLD FRONT MOVE SOUTH INTO THE AREA FROM SOUTHERN KANSAS. FLASH
FLOODING COULD BE MORE WIDESPREAD.

THE THUNDERSTORMS ARE EXPECTED TO CONTINUE TO SPREAD SOUTH OVERNIGHT.
AS THE NIGHT PROGRESSES THE RISK FOR SEVERE THUNDERSTORMS SHOULD
DECREASE BUT THE RISK OF FLASH FLOODING WILL LIKELY INCREASE.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
ACTIVATION OF THE REGIONAL SPOTTER NETWORK EXPECTED.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...NO HAZARDS.
THURSDAY...NO HAZARDS.
FRIDAY...NO HAZARDS.
SATURDAY...NO HAZARDS.
SUNDAY...NO HAZARDS.

EXTENDED DISCUSSION...
THE COLD FRONT WILL CONTINUE TO MOVE SOUTH ACROSS THE AREA
TUESDAY.  THUNDERSTORMS WILL LIKELY BE ONGOING AS THE MORNING
BEGINS.  FLASH FLOODING MAY STILL BE A RISK.  THE THUNDERSTORMS
ARE EXPECTED TO END FROM THE NORTH DURING THE DAY OR TUESDAY
NIGHT.

DRY WEATHER IS EXPECTED FOR THE REMAINDER OF THE UPCOMING WEEK
AS HIGH PRESSURE AT THE SURFACE AND ALOFT DOMINATE THE WEATHER.

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

In the hours before

Local storm report, Aug 10, 6:08 PM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
608 PM CDT MON AUG 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0537 PM     TSTM WND GST     BROKEN ARROW            36.05N 95.79W
08/10/2009  E60 MPH          TULSA              OK   NWS EMPLOYEE

            131ST AND ASPEN

&&

PBS

Special weather statement, Aug 10, 6:16 PM CDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
616 PM CDT MON AUG 10 2009

OKZ060-065>067-070-102345-
MUSKOGEE OK-OKFUSKEE OK-OKMULGEE OK-TULSA OK-WAGONER OK-
616 PM CDT MON AUG 10 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 645 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     OKMULGEE...WESTERN WAGONER AND TULSA

IN EAST CENTRAL OKLAHOMA
     NORTHWESTERN MUSKOGEE AND NORTHERN OKFUSKEE

AT 613 PM CDT...DOPPLER RADAR INDICATED A ISOLATED STRONG
THUNDERSTORMS OVER PORTIONS OF TULSA...WAGONER...AND OKMULGEE
COUNTIES.  THE STRONGEST STORMS WERE LOCATED OVER NEAR OKMULGEE AND
10 MILES WEST OF OKMULGEE...ALSO NEAR GLENPOOL...AND OVER BIXBY.
THESE STORMS WERE DRIFTING EAST AT ABOUT 10 MPH.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
50 MPH...ALONG WITH VERY HEAVY RAIN. MOTORISTS SHOULD USE CAUTION IF
DRIVING THROUGH THESE AREAS OF HEAVY RAIN AND WIND.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

LAT...LON 3565 9620 3565 9619 3567 9619 3586 9607
      3586 9603 3593 9603 3598 9600 3608 9576
      3608 9560 3556 9571 3559 9624
TIME...MOT...LOC 2313Z 257DEG 15KT 3589 9588

Local storm report, Aug 10, 6:28 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
628 PM CDT MON AUG 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0623 PM     FLASH FLOOD      TULSA                   36.13N 95.92W
08/10/2009                   TULSA              OK   AMATEUR RADIO

            ADMIRAL AND 193RD, SEVERAL INCHES OF WATER COVERING
            ROADWAY

&&

PBS

Special weather statement, Aug 10, 6:29 PM CDT, 20 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
629 PM CDT MON AUG 10 2009

OKZ064>066-071-110000-
CREEK OK-MCINTOSH OK-OKFUSKEE OK-OKMULGEE OK-
629 PM CDT MON AUG 10 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 700 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     SOUTHWESTERN OKMULGEE AND SOUTHERN CREEK

IN EAST CENTRAL OKLAHOMA
     OKFUSKEE

IN SOUTHEAST OKLAHOMA
     WESTERN MCINTOSH

AT 625 PM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORM
OUTFLOW WINDS MOVING SOUTH AND SOUTHWEST THROUGH CREEK
OKFUSKEE AND OKMULGEE COUNTIES. THESE WINDS WILL BE IN THE
40 TO 50 MILE AN HOUR RANGE...AND MAY BRING DOWN SMALL TREE
LIMBS.

LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS
INCLUDE...WILSON...OKEMAH...WELEETKA...BEARDEN...CLEARVIEW...PHAROAH.
..CASTLE...BOLEY...MASON...OKFUSKEE...WELTY...HENRYETTA...BRYANT...DE
WAR...SCHULTER...BRISTOW...MILFAY...SLICK...DEPEW AND SHAMROCK.

LAT...LON 3594 9662 3599 9633 3542 9588 3529 9598
      3529 9635 3530 9644 3545 9644 3545 9647
      3542 9649 3542 9651 3566 9662
TIME...MOT...LOC 2325Z 078DEG 15KT 3597 9649 3585 9644
          3575 9628 3564 9619 3555 9615 3552 9603
          3552 9586

Local storm report, Aug 10, 6:42 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
642 PM CDT MON AUG 10 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0639 PM     FLASH FLOOD      MANNFORD                36.13N 96.35W
08/10/2009                   CREEK              OK   BROADCAST MEDIA

            MINOR FLOODING ON ROADWAYS

&&

PBS

Special weather statement, Aug 10, 6:49 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
649 PM CDT MON AUG 10 2009

OKZ066-110015-
OKMULGEE OK-
649 PM CDT MON AUG 10 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 715 PM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHEAST OKLAHOMA
     CENTRAL OKMULGEE

AT 647 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM ABOUT
10 MILES IN DIAMETER LOCATED OVER OKMULGEE...MOVING EAST AT 20 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM
INCLUDE...OKMULGEE...MORRIS AND ERAM.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
50 MPH...ALONG WITH TORRENTIAL RAIN.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT
WEATHER ALERT IS UPGRADED TO A WARNING. MOTORISTS SHOULD USE EXTREME
CAUTION IF DRIVING THROUGH THIS THUNDERSTORM...DUE TO LOW
VISIBILITIES AND WATER ON THE ROADS.

LAT...LON 3569 9612 3574 9575 3573 9572 3556 9571
      3555 9579 3556 9582 3555 9582 3554 9608
TIME...MOT...LOC 2347Z 263DEG 17KT 3563 9595

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 3:43 PM CDT	Special Weather Statement	TSA	Delaware	47 min
Aug 10, 3:51 PM CDT	Special Weather Statement	TSA	Nowata	39 min
Aug 10, 3:58 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	47 min
Aug 10, 4:14 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Wagoner	46 min
Aug 10, 5:03 PM CDT	Special Weather Statement	TSA	Mayes	27 min
Aug 10, 5:03 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee	41 min
Aug 10, 5:12 PM CDT	Special Weather Statement	TSA	Nowata	33 min
Aug 10, 5:13 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	34 min
Aug 10, 5:25 PM CDT	Areal Flood Advisory	TSA	Delaware, Mayes, Muskogee, Rogers, Wagoner	3 hr
Aug 10, 5:34 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa, Wagoner	26 min
Aug 10, 5:40 PM CDT	Special Weather Statement	TSA	Delaware	35 min
Aug 10, 5:45 PM CDT	Special Weather Statement	TSA	Pawnee	30 min
Aug 10, 5:51 PM CDT	Special Weather Statement	TSA	Okmulgee	24 min
Aug 10, 5:59 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	61 min
Aug 10, 6:16 PM CDT	Special Weather Statement	TSA	Okmulgee	29 min
Aug 10, 6:18 PM CDT	Areal Flood Advisory	TSA	Creek, Tulsa, Wagoner	3 hr
Aug 10, 6:20 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	55 min
Aug 10, 6:28 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	47 min
Aug 10, 6:29 PM CDT	Special Weather Statement	TSA	Creek, Okfuskee	31 min
Aug 10, 6:42 PM CDT	Areal Flood Advisory	TSA	Creek, Osage, Pawnee, Tulsa	63 min
Aug 10, 6:54 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Muskogee, Okmulgee, Osage, Rogers, Tulsa and 2 more	66 min
Aug 10, 1:56 PM CDT	Special Weather Statement	TSA	Benton	49 min
Aug 10, 2:38 PM CDT	Severe Thunderstorm Warning	TSA	Benton	52 min

Nearby

Special Weather Statements in Oklahoma, 2009 Every special weather statement in 2009

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.