Alert archive / Texas / Special Weather Statements in 2013

Special Weather Statement, NWS Norman, OK

August 8, 2013Hardeman County, Texas

NWS Norman, OK issued this special weather statement at Aug 8, 2013, 5:53 PM CDT for Hardeman County, Texas. It was in force for 22 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 8, 2013, 5:53 PM CDT (22:53 UTC)
Expired
Aug 8, 2013, 6:15 PM CDT
In force
22 min
Issued by
NWS Norman, OK

County Hardeman County, TX

The radar

The Altus AFB radar (KFDR), 92 km from the middle of the area, began a volume at 22:53 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, 10.9 hours before the alert went out and 259 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, Norman, OK at 12:00Z on 2013-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 696 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, Norman, OK at 12:00Z on 2013-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 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
696 J/kg
Mixed-layer CIN
-239 J/kg
Mixed-layer LCL
819 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.8

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 Norman, OK wrote its last area forecast discussion before this special weather statement went out at Aug 8, 3:28 PM CDT, 2 hours 25 minutes earlier.

Area forecast discussion, Aug 8, 3:28 PM CDT, 2 hours 25 minutes before
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Hazardous weather outlook, Aug 8, 12:05 PM CDT, 5 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1205 PM CDT THU AUG 8 2013

OKZ004>048-050>052-TXZ083>090-091200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1205 PM CDT THU AUG 8 2013

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING ACROSS MUCH OF OKLAHOMA AND PORTIONS OF WESTERN NORTH TEXAS.

LOCATION...
THE SLIGHT RISK AREA COVERS LOCATIONS NORTH OF A LINE FROM BENJAMIN TO
WICHITA FALLS IN WESTERN NORTH TEXAS...TO ARDMORE AND COALGATE IN SOUTH
CENTRAL OKLAHOMA.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM 5 PM THIS
AFTERNOON THROUGH EARLY FRIDAY MORNING.

IMPACTS...
THE MAIN CONCERN WITH ANY SEVERE THUNDERSTORM WILL BE DAMAGING
WIND GUSTS UP TO 70 MPH...GOLFBALL SIZE HAIL AND TORRENTIAL RAINFALL.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
THE RISK AREA SHOULD BE PREPARED FOR SEVERE WEATHER OPERATIONS
LATE THIS AFTERNOON AND TONIGHT.

DISCUSSION...
A FEW SHOWERS WILL CONTINUE THROUGH MID TO LATE AFTERNOON OVER PARTS
OF NORTHERN AND CENTRAL OKLAHOMA. THIS ACTIVITY WILL GENERALLY REMAIN
RELATIVELY WEAK...THOUGH A FEW RUMBLES OF THUNDER MAY ACCOMPANY STRONGER
CELLS.

A GREATER THREAT OF SEVERE STORMS WILL DEVELOP LATE THIS AFTERNOON AND LAST
WELL INTO THE OVERNIGHT HOURS. SEVERAL SURFACE BOUNDARIES FROM OVERNIGHT
CONVECTION WILL LINGER ACROSS OKLAHOMA TODAY. THESE BOUNDARIES WILL ACT AS FOCI
FOR ADDITIONAL THUNDERSTORM DEVELOPMENT LATER THIS AFTERNOON. SUFFICIENT
INSTABILITY AND WIND SHEAR WILL BE PRESENT ACROSS THE SLIGHT RISK AREA FOR A FEW
SEVERE STORMS TO DEVELOP WITH DAMAGING WIND GUSTS AND LARGE HAIL AS WELL AS
VERY HEAVY RAINFALL. THESE STORMS WILL FORM INTO MULTIPLE CLUSTERS DURING THE
EVENING AND OVERNIGHT PERIOD AS THEY MOVE TOWARD THE EAST AND CONTINUE TO POSE A
THREAT FOR DAMAGING WIND GUSTS.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT FRIDAY AUG 8.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...70 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
STORM CHANCES WILL CONTINUE ACROSS THE AREA FRIDAY INTO THE
WEEKEND AND THE EARLY PART OF NEXT WEEK AS A WEAK COLD FRONT REMAINS
OVER THE AREA. THERE WILL BE A CHANCE FOR A FEW STRONG THUNDERSTORMS
ON FRIDAY ACROSS OKLAHOMA AND WESTERN NORTH TEXAS. HEAVY RAINFALL AND
LOCALIZED FLOODING WILL ALSO BE POSSIBLE.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY 5AM
FRIDAY.

30/AUSTIN

In the hours before

Special weather statement, Aug 8, 4:45 PM CDT, 1 hour 8 minutes before
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Special weather statement, Aug 8, 5:02 PM CDT, 51 minutes before
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Special weather statement, Aug 8, 5:23 PM CDT, 30 minutes before
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Local storm report, Aug 8, 5:50 PM CDT, 3 minutes before
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Special weather statement, Aug 8, 5:51 PM CDT, 2 minutes before
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Special weather statement, Aug 8, 5:53 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 10:10 PM CDTSevere Thunderstorm WarningOUNJackson, Tillman50 min
Aug 7, 10:50 PM CDTSpecial Weather StatementOUNGreer, Tillman25 min
Aug 7, 11:03 PM CDTSpecial Weather StatementOUNOklahoma27 min
Aug 7, 11:18 PM CDTSpecial Weather StatementOUNHarper27 min
Aug 7, 11:23 PM CDTSpecial Weather StatementOUNBeckham, Kiowa, Washita37 min
Aug 7, 11:42 PM CDTSevere Thunderstorm WarningOUNEllis, Harper48 min
Aug 8, 12:10 AM CDTSpecial Weather StatementOUNCaddo, Kiowa, Washita35 min
Aug 8, 12:32 AM CDTSpecial Weather StatementOUNEllis, Harper28 min
Aug 8, 12:52 AM CDTSpecial Weather StatementOUNCuster, Roger Mills23 min
Aug 8, 12:56 AM CDTSevere Thunderstorm WarningOUNCuster, Dewey, Roger Mills49 min
Aug 8, 1:39 AM CDTSpecial Weather StatementOUNMajor21 min
Aug 8, 2:02 AM CDTSpecial Weather StatementOUNAlfalfa, Blaine, Kingfisher, Major, Woods43 min
Aug 8, 2:12 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Blaine, Garfield, Grant, Major, Woods48 min
Aug 8, 2:50 AM CDTAreal Flood AdvisoryOUNAlfalfa, Woods3 hr
Aug 8, 3:00 AM CDTSevere Thunderstorm WarningOUNGrant45 min
Aug 8, 3:23 AM CDTSevere Thunderstorm WarningOUNGrant, Kay52 min
Aug 8, 11:46 AM CDTRiver Flood WarningOUNMajor, Woods, Woodward10 hr
Aug 8, 3:38 PM CDTFlood WatchOUNAlfalfa, Garfield, Grant, Harper, Kay, Major and 3 more21 hr
Aug 8, 4:45 PM CDTSpecial Weather StatementOUNCotton15 min
Aug 8, 5:02 PM CDTSpecial Weather StatementOUNCotton28 min
Aug 8, 5:23 PM CDTSpecial Weather StatementOUNCotton22 min
Aug 8, 5:51 PM CDTSpecial Weather StatementOUNCotton24 min
Aug 8, 6:14 PM CDTSpecial Weather StatementOUNHarper31 min
Aug 8, 6:20 PM CDTSpecial Weather StatementOUNCotton25 min
Aug 8, 6:37 PM CDTSpecial Weather StatementOUNKiowa23 min
Aug 8, 6:53 PM CDTSevere Thunderstorm WarningOUNKiowa52 min
Aug 8, 3:40 PM CDTSpecial Weather StatementOUNBaylor35 min
Aug 8, 4:10 PM CDTSpecial Weather StatementOUNBaylor20 min
Aug 8, 4:17 PM CDTSevere Thunderstorm WarningOUNBaylor43 min
Aug 8, 5:56 PM CDTSpecial Weather StatementOUNBaylor19 min
Aug 8, 6:11 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman49 min
Aug 8, 6:31 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor, Knox59 min
Aug 8, 6:57 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman, Wilbarger48 min

Nearby

Special Weather Statements in Texas, 2013Every special weather statement in 2013

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.