Alert archive / Arkansas / Special Weather Statements in 2011

Special Weather Statement, NWS Tulsa, OK

August 10, 2011Washington County, Arkansas

NWS Tulsa, OK issued this special weather statement at Aug 10, 2011, 9:13 PM CDT for Washington County, Arkansas. It was in force for 32 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, 2011, 9:13 PM CDT (02:13 UTC)
Expired: Aug 10, 2011, 9:45 PM CDT
In force: 32 min
Issued by: NWS Tulsa, OK

County Washington County, AR

The radar

The Western Arkansas radar (KSRX), 67 km from the middle of the area, began a volume at 02:15 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 00:00Z, 2.2 hours before the alert went out and 316 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: 2693 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 2039 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 456 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.1

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 10, 6:39 PM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Aug 10, 6:39 PM CDT, 2 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
639 PM CDT WED AUG 10 2011

.DISCUSSION...

THE 00Z AVIATION DISCUSSION IS INCLUDED BELOW.

&&

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM.
OUTFLOW BOUNDARIES LEFT FROM PREVIOUS AND ONGOING STORMS WILL
CONTINUE TO KEEP POTENTIAL FOR TSRA AT ANY TAF SITE THE NEXT 24
HRS. THE SCT NATURE DOES NOT WARRANT ANY TEMPOS...AND THE TAFS
WILL BE AMENDED IF CONFIDENCE THAT A PARTICULAR TERMINAL WILL BE
AFFECTED BY A STORM INCREASES.

LACY

&&

.PREV DISCUSSION... /ISSUED 405 PM CDT WED AUG 10 2011/

DISCUSSION...
HEAT RELIEF HAS BEEN SEEN TODAY ACROSS ALL BUT FAR SOUTHEAST
OKLAHOMA BEHIND OUTFLOW BOUNDARY FROM OVERNIGHT CONVECTION.
SHOWERS AND THUNDERSTORMS CONTINUE ACROSS PARTS OF FAR NORTHEAST
OKLAHOMA AND NORTHWEST ARKANSAS AT THIS TIME AND EXPECT THIS
ACTIVITY TO EITHER DIE OUT OR MOVE OUT OF THE AREA BY EARLY THIS
EVENING.

POTENTIAL EXISTS FOR ANOTHER MCS OR TWO TO AFFECT THE AREA
TONIGHT. THE INITIAL CONCERN MAY BE ACROSS PARTS OF SOUTHEAST
OKLAHOMA AS STORMS MAY DEVELOP SHORTLY ACROSS WESTERN OKLAHOMA AND
MOVE SOUTHEAST INTO THAT AREA. OVERNIGHT...NORTHEAST OKLAHOMA AND
NORTHWEST ARKANSAS MAY AGAIN BECOME THE MAIN FOCAL POINT FOR
ACTIVITY.

WILL ALLOW THE HEAT HEADLINES TO EXPIRE ON SCHEDULE AT 8 PM. HEAT
INDICES ARE NEAR 105 IN FAR SOUTHEAST OKLAHOMA AT THIS TIME...AND
EXPECT A BIT COOLER AIR THURSDAY TO KEEP HEAT INDICES A BIT BELOW
105 IN MOST PLACES.

THE BOUNDARY TO THE SOUTH WILL RETRUN NORTH BY FRIDAY ALTHOUGH
POTENTIAL MCS DEVELOPMENT THURSDAY NIGHT MAY HAVE AN IMPACT ON
JUST HOW FAR NORTH IT RETREATS. HEAT HEADLINES MAY AGAIN BE
REQUIRED FRIDAY FOR PARTS OF THE AREA.

A COLD FRONT WILL SWEEP ACROSS THE AREA FRIDAY NIGHT AND EARLY
SATURDAY PRECEDED BY ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS.
SLIGHTLY COOLER AND DRIER AIR WILL FOLLOW THIS FRONT OVER THE
WEEKEND.

THE FRONT WILL RETURN NORTH AS A WARM FRONT MONDAY BRINGING A
SMALL CHANCE OF SHOWERS AND THUNDERSTORMS. THE UPPER RIDGE WILL BE
BUILDING BACK OVER THE AREA EARLY NEXT WEEK SO THE HEAT WILL BEGIN
TO BUILD AGAIN AS A RESULT. RECENT RAINS WILL TEMPER THE HIGHS A
BIT THOUGH SO EXPECT MOST READINGS TO TOP OUT NEAR THE CENTURY
MARK AS OPPOSED TO THE EXTREME LEVELS WE SAW LAST WEEK.

STAYED CLOSE TO GUIDANCE TEMPERATURES THE NEXT COUPLE DAYS WITH
CLOUDS/RAIN UNCERTAINTIES PLAYING A SIGNIFICANT ROLE IN THIS
REGARD.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   70  88  73  97 /  50  40  30  40
FSM   70  90  72 100 /  40  60  20  40
MLC   70  94  74 102 /  30  40  20  30
BVO   67  88  70  96 /  50  40  30  40
FYV   65  85  67  93 /  50  60  20  50
BYV   65  85  67  92 /  50  60  20  50
MKO   69  89  72  98 /  40  50  20  40
MIO   65  86  69  94 /  40  40  30  40
F10   69  91  73  99 /  40  40  20  40
HHW   73  98  75 102 /  20  30  20  30

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...EXCESSIVE HEAT WARNING UNTIL 8 PM WEDNESDAY FOR OKZ049-OKZ053.

AR...NONE.
&&

AVIATION...30

Hazardous weather outlook, Aug 10, 5:18 PM CDT, 3 hours 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
518 PM CDT WED AUG 10 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-111030-
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-
518 PM CDT WED AUG 10 2011

...SHOWERS AND THUNDERSTORMS POSSIBLE THROUGH SATURDAY...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

FLASH FLOOD.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

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

DANGEROUS HEAT.
	RISK...LIMITED.
	AREA...SOUTHEAST OKLAHOMA.
	ONSET...ONGOING.

FIRE WEATHER DANGER.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS.
	ONSET...ONGOING.

        AREA OF GREATEST RISK...ALONG AND SOUTH OF A BURBANK TO FORT SMITH LINE.

DISCUSSION...
SHOWERS AND THUNDERSTORMS CONTINUE TO PUSH ACROSS FAR NORTHEAST
OKLAHOMA AND FAR NORTHWEST ARKANSAS THIS AFTERNOON. THIS ACTIVITY
IS EXPECTED TO MOVE OUT OF THE REGION THIS EVENING BEFORE ANOTHER
THUNDERSTORM COMPLEX DEVELOPS OUT WEST AND PROGRESSES TOWARD THE
REGION. SOME OF THE THUNDERSTORMS WILL HAVE THE POTENTIAL TO
BECOME STRONG TO SEVERE WITH LARGE HAIL AND DAMAGING WINDS BEING
THE MAIN THREATS. LOCALLY HEAVY RAINFALL WITH A THREAT FOR FLASH
FLOODING WILL ALSO EXIST AS THUNDERSTORMS PUSH THROUGH THE REGION
TONIGHT AND INTO THURSDAY.

HOT TEMPERATURES CONTINUE ACROSS PORTIONS OF SOUTHEAST OKLAHOMA
THIS AFTERNOON AS THE RECENT RAINS HAVE REMAINED TO THE NORTH OF
THESE AREAS. HEAT INDEX VALUES AROUND 100 TO 105 DEGREES HAVE BEEN
OBSERVED. THESE CONDITIONS ARE EXPECTED TO DECREASE THIS EVENING
AND OVERNIGHT AS TEMPERATURES DECREASE WITH CHANCES OF SHOWERS AND
THUNDERSTORMS.

OVERALL DRY CONDITIONS ACROSS MOST OF THE REGION CONTINUES TO
CREATE LIMITED FIRE WEATHER DANGERS ACROSS LOCATIONS ALONG AND
SOUTH OF A BURBANK TO FORT SMITH LINE. THESE CONDITIONS SHOULD
DECREASE THIS EVENING AS RELATIVE HUMIDITY VALUES INCREASE.

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

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THURSDAY AND FRIDAY...THUNDERSTORM POTENTIAL...VERY HIGH FIRE WEATHER
                      POTENTIAL...DANGEROUS HEAT POTENTIAL...HEAVY RAIN POTENTIAL.
SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...NO HAZARDS.
MONDAY...THUNDERSTORM POTENTIAL.
TUESDAY...NO HAZARDS.

EXTENDED DISCUSSION...
A THUNDERSTORM COMPLEX IS EXPECTED TO BE CONTINUING THURSDAY
ACROSS THE REGION...WITH ANOTHER POSSIBLE COMPLEX DEVELOPING INTO
FRIDAY. LOCALIZED HEAVY RAINFALL WILL ALSO CONTINUE TO BE POSSIBLE
AS THESE COMPLEXES MOVE THROUGH. A FRONTAL BOUNDARY LOOKS TO PUSH
INTO THE REGION FRIDAY NIGHT AND SATURDAY WITH CONTINUING CHANCES
FOR THUNDERSTORMS OVER THE REGION. THIS FRONT SHOULD RETREAT BACK
NORTHWARD DURING THE MONDAY TIME FRAME ALLOWING FOR THUNDERSTORM
POTENTIAL TO REDEVELOP.

HOT TEMPERATURES LOOK TO REMAIN POSSIBLE ACROSS FAR SOUTHEAST
OKLAHOMA THURSDAY AND FRIDAY AS THESE LOCATIONS REMAIN SOUTH OF A
FRONTAL BOUNDARY CURRENTLY STRETCHED ACROSS THE REGION. HEAT
INDICES ARE EXPECTED TO BE SLIGHTLY COOLER WITH AROUND 100 DEGREES
POSSIBLE. HOT TEMPERATURES AND OVERALL DRY CONDITIONS WILL ALLOW
FOR LIMITED TO ELEVATED FIRE WEATHER DANGERS THROUGH FRIDAY.

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

In the hours before

Special weather statement, Aug 10, 8:21 PM CDT, 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
821 PM CDT WED AUG 10 2011

OKZ060-064-110145-
CREEK OK-TULSA OK-
821 PM CDT WED AUG 10 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 845 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     EASTERN CREEK AND SOUTHERN TULSA

AT 821 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER SAPULPA...
MOVING EAST AT 30 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THIS
STORM INCLUDE...TULSA...BIXBY...JENKS...GLENPOOL...KIEFER AND
SAPULPA.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL.

LAT...LON 3603 9583 3586 9585 3592 9621 3609 9618
TIME...MOT...LOC 0121Z 281DEG 24KT 3599 9613

Local storm report, Aug 10, 8:34 PM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
834 PM CDT WED AUG 10 2011

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

0823 PM     TSTM WND GST     MORRIS                  35.61N 95.86W
08/10/2011  E60 MPH          OKMULGEE           OK   PUBLIC

            50-60 MPH WINDS. SMALL HAIL NORTH OF TOWN.

&&

JDS

Special weather statement, Aug 10, 8:34 PM CDT, 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
834 PM CDT WED AUG 10 2011

ARZ010-011-019-020-110200-
CRAWFORD AR-FRANKLIN AR-MADISON AR-WASHINGTON AR-
834 PM CDT WED AUG 10 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 900 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     NORTHEASTERN CRAWFORD...SOUTHWESTERN MADISON AND SOUTHEASTERN
     WASHINGTON

IN WEST CENTRAL ARKANSAS
     NORTHERN FRANKLIN

AT 834 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER WOOLSEY...
MOVING EAST AT 35 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THIS
STORM INCLUDE...BIDVILLE...PATRICK...DELANEY...CROSSES...WINSLOW...
BLACKBURN...BRENTWOOD...WOOLSEY...WYOLA...ARNETT AND MOUNT GAYLER.

THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL. RESIDENTS IN
THESE AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT WEATHER
ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3587 9382 3563 9395 3584 9427 3595 9416
TIME...MOT...LOC 0134Z 285DEG 32KT 3585 9414

Local storm report, Aug 10, 8:40 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
840 PM CDT WED AUG 10 2011

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

0823 PM     TSTM WND GST     4 NE MORRIS             35.65N 95.81W
08/10/2011  E60 MPH          OKMULGEE           OK   PUBLIC

&&

JDS

Local storm report, Aug 10, 8:57 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
857 PM CDT WED AUG 10 2011

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

0841 PM     TSTM WND GST     HITCHITA                35.52N 95.75W
08/10/2011  E60 MPH          MCINTOSH           OK   PUBLIC

            THUNDERSTORM WIND GUST ESTIMATED TO 60 WITH TREE DAMAGE.
            ALSO HAD DIME AND NICKEL SIZE HAIL.

&&

JDS

Special weather statement, Aug 10, 9:13 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
913 PM CDT WED AUG 10 2011

ARZ010-011-110245-
MADISON AR-WASHINGTON AR-
913 PM CDT WED AUG 10 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 945 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     SOUTHWESTERN MADISON AND SOUTHEASTERN WASHINGTON

AT 913 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES WEST OF
BRENTWOOD...MOVING EAST AT 25 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...HICKS...PATRICK...DELANEY...
CROSSES...WINSLOW...WEST FORK...BLACKBURN...BRENTWOOD...WOOLSEY...
WYOLA AND ARNETT.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL.

LAT...LON 3577 9387 3577 9391 3576 9392 3576 9396
      3577 9427 3595 9423 3593 9387
TIME...MOT...LOC 0213Z 279DEG 22KT 3585 9414

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 7:02 PM CDT	Severe Thunderstorm Warning	TSA	Creek	28 min
Aug 10, 7:26 PM CDT	Severe Thunderstorm Warning	TSA	Creek	42 min
Aug 10, 8:02 PM CDT	Special Weather Statement	TSA	Okmulgee	28 min
Aug 10, 8:19 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	56 min
Aug 10, 8:21 PM CDT	Special Weather Statement	TSA	Tulsa	24 min
Aug 10, 9:08 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, McIntosh, Pittsburg	36 min
Aug 10, 9:52 PM CDT	Special Weather Statement	TSA	Wagoner	38 min
Aug 10, 9:58 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Wagoner	37 min
Aug 10, 10:45 PM CDT	Special Weather Statement	TSA	Tulsa	30 min
Aug 10, 11:06 PM CDT	Special Weather Statement	TSA	Tulsa	24 min
Aug 11, 12:06 AM CDT	Special Weather Statement	TSA	Cherokee	24 min
Aug 11, 12:09 AM CDT	Special Weather Statement	TSA	Delaware	36 min
Aug 11, 3:29 AM CDT	Special Weather Statement	TSA	Craig	31 min
Aug 11, 4:22 AM CDT	Special Weather Statement	TSA	Craig, Ottawa	38 min
Aug 11, 4:49 AM CDT	Special Weather Statement	TSA	Ottawa	41 min
Aug 11, 6:55 AM CDT	Special Weather Statement	TSA	Delaware	35 min
Aug 11, 8:48 AM CDT	Special Weather Statement	TSA	Osage	27 min
Aug 11, 10:24 AM CDT	Special Weather Statement	TSA	Tulsa	51 min
Aug 11, 12:13 PM CDT	Special Weather Statement	TSA	Pittsburg	62 min
Aug 11, 12:46 PM CDT	Special Weather Statement	TSA	Latimer, Pushmataha	59 min
Aug 11, 1:37 PM CDT	Special Weather Statement	TSA	Pushmataha	53 min
Aug 11, 1:55 PM CDT	Special Weather Statement	TSA	LeFlore	65 min
Aug 11, 2:30 PM CDT	Special Weather Statement	TSA	Choctaw	30 min
Aug 10, 8:34 PM CDT	Special Weather Statement	TSA	Washington	26 min
Aug 10, 9:14 PM CDT	Special Weather Statement	TSA	Washington	31 min
Aug 10, 9:40 PM CDT	Special Weather Statement	TSA	Madison	35 min
Aug 11, 1:17 AM CDT	Special Weather Statement	TSA	Carroll	28 min
Aug 11, 3:33 AM CDT	Special Weather Statement	TSA	Franklin	42 min
Aug 11, 4:04 AM CDT	Areal Flood Advisory	TSA	Franklin	116 min
Aug 11, 4:18 AM CDT	Special Weather Statement	TSA	Franklin	27 min
Aug 11, 4:25 AM CDT	Special Weather Statement	TSA	Benton	35 min
Aug 11, 5:46 AM CDT	Special Weather Statement	TSA	Madison	44 min
Aug 11, 6:06 AM CDT	Special Weather Statement	TSA	Franklin	39 min
Aug 11, 2:13 PM CDT	Special Weather Statement	TSA	Crawford, Franklin, Sebastian	62 min

Nearby

Special Weather Statements in Arkansas, 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.