Alert archive / Arkansas / Special Weather Statements in 2012

Special Weather Statement, NWS Tulsa, OK

August 13, 2012Benton County, Arkansas

NWS Tulsa, OK issued this special weather statement at Aug 13, 2012, 2:01 AM CDT for Benton County, Arkansas. It was in force for 29 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 13, 2012, 2:01 AM CDT (07:01 UTC)
Expired
Aug 13, 2012, 2:30 AM CDT
In force
29 min
Issued by
NWS Tulsa, OK

County Benton County, AR

The radar

The Western Arkansas radar (KSRX), 103 km from the middle of the area, began a volume at 07:04 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, 7.0 hours before the alert went out and 83 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2012-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 338 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2012-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
338 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
1933 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
328 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

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 12, 11:53 PM CDT, 2 hours 8 minutes earlier.

Area forecast discussion, Aug 12, 11:53 PM CDT, 2 hours 8 minutes before
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Hazardous weather outlook, Aug 12, 8:48 PM CDT, 5 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
848 PM CDT SUN AUG 12 2012

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-
848 PM CDT SUN AUG 12 2012

...SEVERE STORM POTENTIAL CONTINUES THIS EVENING...

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

.DAY ONE...TONIGHT.

SEVERE THUNDERSTORM.
	RISK...SIGNIFICANT.
	AREA...SOUTH AND EAST OF INTERSTATE 44.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...EXTREME SOUTHEAST OKLAHOMA.

FIRE WEATHER DANGER.
	RISK...LIMITED.
	AREA...WEST OF AN OKEMAH TO TULSA TO BARTLESVILLE LINE.
	ONSET...ONGOING.

DISCUSSION...

SCATTERED STRONG TO SEVERE STORMS ARE MOVING EAST ACROSS FAR
SOUTHEAST OKLAHOMA WITH A CONTINUED THREAT OF LARGE HAIL AND
DAMAGING WINDS THIS EVENING. ISOLATED TO WIDELY SCATTERED STORMS
REMAIN POSSIBLE ACCORDING TO THE LATEST DATA AHEAD OF THE FRONT
OVER EASTERN OKLAHOMA WITH STORMS MOVING INTO NORTHWEST ARKANSAS
LATER ON. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY
THREATS. A LIMITED FIRE DANGER CONTINUES THIS EVENING BEHIND THE
FRONT WHERE NORTHWEST WINDS ARE GUSTING IN THE 10 TO 15 MPH RANGE.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
ACTIVATION OF LOCAL SPOTTER NETWORKS MAY CONTINUE TO BE NEEDED
OVER SOUTHEAST OKLAHOMA AND LATER ON FOR NORTHEAST OKLAHOMA AND
NORTHWEST ARKANSAS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
MONDAY...VERY HIGH FIRE WEATHER POTENTIAL.
TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...THUNDERSTORM POTENTIAL...VERY HIGH FIRE WEATHER POTENTIAL.
THURSDAY...THUNDERSTORM POTENTIAL.
FRIDAY...THUNDERSTORM POTENTIAL.
SATURDAY...NO HAZARDS.

EXTENDED DISCUSSION...

BREEZY NORTH WINDS AND VERY DRY CONDITIONS WILL YIELD AN ELEVATED
FIRE DANGER ON MONDAY. DATA CONTINUES TO INDICATE THAT A
THUNDERSTORM COMPLEX WILL DEVELOP ACROSS THE HIGH PLAINS AND MOVE
INTO THE AREA ON TUESDAY. THE BOUNDARY THAT IS PRODUCED FROM THIS
THUNDERSTORM COMPLEX WILL REMAIN IN THE AREA ON WEDNESDAY AND MAY
SUPPORT ADDITIONAL STORM DEVELOPMENT. AN ELEVATED FIRE DANGER DAY
IS EXPECTED ON WEDNESDAY AS WELL AHEAD OF ANOTHER FRONT. A STRONG
COLD FRONT IS STILL EXPECTED TO ARRIVE ON THURSDAY...BRINGING
COOLER TEMPERATURES AND HIGHER RAIN AND STORM CHANCES THROUGH
FRIDAY.

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

In the hours before

Local storm report, Aug 13, 12:04 AM CDT, 1 hour 57 minutes before
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Local storm report, Aug 13, 12:06 AM CDT, 1 hour 55 minutes before
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Special weather statement, Aug 13, 12:29 AM CDT, 1 hour 32 minutes before
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Special weather statement, Aug 13, 1:06 AM CDT, 55 minutes before
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Local storm report, Aug 13, 1:08 AM CDT, 53 minutes before
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Special weather statement, Aug 13, 2:01 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 7:14 PM CDTSpecial Weather StatementTSAPushmataha46 min
Aug 12, 7:42 PM CDTSevere Thunderstorm WarningTSAPushmataha33 min
Aug 12, 7:48 PM CDTSevere Thunderstorm WarningTSAChoctaw, Pushmataha57 min
Aug 12, 7:57 PM CDTSevere Thunderstorm WarningTSAPushmataha47 min
Aug 12, 8:36 PM CDTSpecial Weather StatementTSAMcIntosh24 min
Aug 12, 8:42 PM CDTSevere Thunderstorm WarningTSAPushmataha34 min
Aug 12, 9:50 PM CDTSevere Thunderstorm WarningTSAMuskogee40 min
Aug 12, 9:57 PM CDTSevere Thunderstorm WarningTSAHaskell, Muskogee48 min
Aug 12, 10:14 PM CDTSpecial Weather StatementTSAAdair31 min
Aug 12, 10:21 PM CDTSevere Thunderstorm WarningTSACraig54 min
Aug 12, 10:27 PM CDTSevere Thunderstorm WarningTSAMuskogee, Sequoyah48 min
Aug 12, 10:28 PM CDTSevere Thunderstorm WarningTSAAdair47 min
Aug 12, 10:41 PM CDTSevere Thunderstorm WarningTSAHaskell12 min
Aug 12, 10:42 PM CDTSpecial Weather StatementTSADelaware33 min
Aug 12, 10:57 PM CDTSpecial Weather StatementTSAOttawa33 min
Aug 12, 11:05 PM CDTSevere Thunderstorm WarningTSAOttawa25 min
Aug 12, 11:11 PM CDTSevere Thunderstorm WarningTSAAdair37 min
Aug 12, 11:16 PM CDTSevere Thunderstorm WarningTSACraig, Mayes13 min
Aug 12, 11:30 PM CDTSevere Thunderstorm WarningTSAAdair, Delaware25 min
Aug 13, 12:29 AM CDTSpecial Weather StatementTSADelaware46 min
Aug 12, 11:07 PM CDTSevere Thunderstorm WarningTSABenton, Washington53 min
Aug 12, 11:36 PM CDTSevere Thunderstorm WarningTSACrawford, Franklin, Sebastian54 min
Aug 12, 11:58 PM CDTSpecial Weather StatementTSAWashington32 min
Aug 13, 12:01 AM CDTSpecial Weather StatementTSAFranklin29 min
Aug 13, 1:06 AM CDTSpecial Weather StatementTSABenton, Carroll24 min

Nearby

Special Weather Statements in Arkansas, 2012Every special weather statement in 2012

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.