Alert archive / Arkansas / Special Weather Statements in 2011

Special Weather Statement, NWS Tulsa, OK

July 12, 2011Crawford County, Arkansas

NWS Tulsa, OK issued this special weather statement at Jul 12, 2011, 9:40 PM CDT for Crawford County, Arkansas. It was in force for 65 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 12, 2011, 9:40 PM CDT (02:40 UTC)
Expired: Jul 12, 2011, 10:45 PM CDT
In force: 65 min
Issued by: NWS Tulsa, OK

County Crawford County, AR

The radar

The Western Arkansas radar (KSRX), 49 km from the middle of the area, began a volume at 02:43 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, 2.7 hours before the alert went out and 139 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: 1117 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 2434 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 32 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 Jul 12, 9:37 PM CDT, 3 minutes earlier.

Area forecast discussion, Jul 12, 9:37 PM CDT, 3 minutes before

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Hazardous weather outlook, Jul 12, 3:27 PM CDT, 6 hours 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
327 PM CDT TUE JUL 12 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-131000-
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-
327 PM CDT TUE JUL 12 2011

...SCATTERED THUNDERSTORMS THROUGH TONIGHT OTHERWISE THE HEAT
   CONTINUES...

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...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

DANGEROUS HEAT.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

FIRE WEATHER DANGER.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA WEST OF HIGHWAY 75.
	ONSET...ONGOING.

DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS NORTHEAST
OKLAHOMA THIS AFTERNOON...SPREADING SLOWLY EAST INTO NORTHWEST
ARKANSAS OVERNIGHT. A FEW OF THE STRONGER STORMS COULD PRODUCE BRIEF
DAMAGING WINDS AND HEAVY RAIN THROUGH THE EVENING HOURS.

OTHERWISE...THE HEAT WILL CONTINUE...WITH MOST LOCATIONS TOPPING OUT
WELL ABOVE 100 DEGREES THIS AFTERNOON. EXCESSIVE HEAT WARNINGS
AND HEAT ADVISORIES REMAIN IN EFFECT ACROSS EASTERN OKLAHOMA AND
NORTHWEST ARKANSAS. SEE /OKCNPWTSA/ FOR FURTHER DETAILS.

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

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

EXTENDED DISCUSSION...
HOT AFTERNOON TEMPERATURES WITH HEAT INDEX VALUES IN THE 100 TO
AROUND 110 DEGREE RANGE ARE EXPECTED TO CONTINUE FOR THE NEXT
SEVERAL DAYS WITH LITTLE RELIEF. ISOLATED TO SCATTERED SHOWERS AND
THUNDERSTORMS WILL REMAIN POSSIBLE THE REMAINDER OF THE WEEK.
HIGH PRESSURE ALOFT THEN BUILDS BACK INTO THE REGION FOR THE
WEEKEND...ALLOWING FOR THE DANGEROUS HEAT TO CONTINUE.

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

In the hours before

Special weather statement, Jul 12, 7:37 PM CDT, 2 hours 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
737 PM CDT TUE JUL 12 2011

OKZ066-070-071-073-074-130130-
HASKELL OK-MCINTOSH OK-MUSKOGEE OK-OKMULGEE OK-PITTSBURG OK-
737 PM CDT TUE JUL 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 830 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     WESTERN HASKELL...MCINTOSH AND NORTHEASTERN PITTSBURG

IN EAST CENTRAL OKLAHOMA
     SOUTHEASTERN MUSKOGEE

IN NORTHEAST OKLAHOMA
     SOUTHEASTERN OKMULGEE

AT 737 PM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM VERNON TO LAKE EUFAULA STATE PARK...MOVING NORTHEAST
AT 15 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS
INCLUDE...ENTERPRISE...HENRYETTA...DEWAR...HOFFMAN...GRAYSON...
EUFAULA...CHECOTAH...HANNA...VERNON...RAIFORD...VIVIAN...STIDHAM...
ONAPA...PIERCE...HITCHITA...RENTIESVILLE...INDIANOLA...CANADIAN...
COUNCIL HILL...WARNER...OKTAHA...KEEFETON AND LAKE EUFAULA STATE
PARK.

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 3564 9530 3524 9526 3512 9603 3514 9602
      3516 9599 3529 9599 3530 9598 3537 9598
      3538 9604 3550 9604
TIME...MOT...LOC 0037Z 237DEG 11KT 3521 9592 3539 9559

Special weather statement, Jul 12, 8:15 PM CDT, 1 hour 25 minutes before

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Special weather statement, Jul 12, 8:40 PM CDT, 1 hour before

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Special weather statement, Jul 12, 8:48 PM CDT, 52 minutes before

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Special weather statement, Jul 12, 9:07 PM CDT, 33 minutes before

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Special weather statement, Jul 12, 9:40 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 7:00 PM CDT	Special Weather Statement	TSA	McIntosh	60 min
Jul 12, 7:35 PM CDT	Special Weather Statement	TSA	Muskogee	40 min
Jul 12, 7:37 PM CDT	Special Weather Statement	TSA	McIntosh, Muskogee	53 min
Jul 12, 8:02 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Muskogee, Sequoyah	58 min
Jul 12, 8:15 PM CDT	Special Weather Statement	TSA	Cherokee	45 min
Jul 12, 8:48 PM CDT	Special Weather Statement	TSA	Sequoyah	57 min
Jul 12, 11:22 PM CDT	Special Weather Statement	TSA	Osage	38 min
Jul 13, 5:24 AM CDT	Areal Flood Advisory	TSA	Osage	3 hr
Jul 13, 1:28 PM CDT	Special Weather Statement	TSA	Sequoyah	47 min
Jul 13, 1:31 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	44 min
Jul 13, 2:06 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	39 min
Jul 13, 2:55 PM CDT	Special Weather Statement	TSA	Pittsburg	35 min
Jul 13, 3:23 PM CDT	Special Weather Statement	TSA	Pittsburg	37 min
Jul 13, 3:59 PM CDT	Excessive Heat Watch	TSA	Cherokee, Choctaw, Craig, Creek, Delaware, Haskell and 15 more	60 hr
Jul 13, 4:21 PM CDT	Special Weather Statement	TSA	LeFlore	24 min
Jul 13, 4:44 PM CDT	Special Weather Statement	TSA	Okfuskee	31 min
Jul 12, 8:40 PM CDT	Special Weather Statement	TSA	Crawford	35 min
Jul 12, 9:07 PM CDT	Special Weather Statement	TSA	Crawford	23 min
Jul 12, 11:07 PM CDT	Special Weather Statement	TSA	Carroll	38 min
Jul 13, 2:14 PM CDT	Special Weather Statement	TSA	Sebastian	31 min
Jul 13, 2:17 PM CDT	Special Weather Statement	TSA	Franklin	28 min
Jul 13, 2:38 PM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	26 min
Jul 13, 2:46 PM CDT	Special Weather Statement	TSA	Franklin	29 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.