Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 515, NWS Norman, OK

June 9, 20136 counties in Texas

NWS Norman, OK issued this severe thunderstorm warning at Jun 9, 2013, 12:44 AM CDT for 6 counties in Texas. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 9, 2013, 12:44 AM CDT (05:44 UTC)
Expired
Jun 9, 2013, 1:45 AM CDT
In force
61 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Archer County, TX, Baylor County, TX, Foard County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 65 km from the middle of the area, began a volume at 05:47 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 5.7 hours before the alert went out and 276 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, Amarillo Airport, TX at 00:00Z on 2013-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1603 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, Amarillo Airport, TX at 00:00Z on 2013-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
1603 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
1891 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.2
Supercell composite
5.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 8, 11:59 PM CDT, 45 minutes earlier.

Area forecast discussion, Jun 8, 11:59 PM CDT, 45 minutes before
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Hazardous weather outlook, Jun 8, 10:06 PM CDT, 2 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
1006 PM CDT SAT JUN 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-
1006 PM CDT SAT JUN 8 2013

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

.DAY ONE...REST OF TONIGHT...

THUNDERSTORM OUTLOOK...
A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH 2 AM TONIGHT ACROSS
PARTS OF WESTERN OKLAHOMA AND SOUTHWESTERN OKLAHOMA...AS WELL AS WESTERN
NORTH TEXAS...MAINLY SOUTHWEST OF A CHEYENNE TO WATONGA TO CHICKASHA
TO WAURIKA LINE.

THE MAIN HAZARD WITH ANY SEVERE STORM IS DAMAGING WIND GUSTS AROUND
60 MPH.

THUNDERSTORMS ARE POSSIBLE FOR THE REST OF TONIGHT OVER MUCH OF
OKLAHOMA AND WESTERN NORTH TEXAS.

DISCUSSION...
A BAND OF SHOWERS AND THUNDERSTORMS WILL GENERALLY CONTINUE TO
DECREASE IN INTENSITY AS IT MOVES SOUTH ACROSS OKLAHOMA INTO
WESTERN NORTH TEXAS THROUGHOUT THE NIGHT TONIGHT.

A FEW STORMS MAY BE SEVERE WITH DAMAGING WIND GUSTS UP TO 60 MPH
ACROSS WESTERN AND SOUTHWESTERN OKLAHOMA...AS WELL AS WESTERN
NORTH TEXAS THROUGH 2 AM WHERE BEST INSTABILITY AND STRONGEST
SHEAR ARE LOCATED.

ACROSS THE I-35 CORRIDOR INCLUDING THE OKLAHOMA CITY METRO...PONCA
CITY...ARDMORE...AND DURANT AREAS...WEAKER INSTABILITY AND SHEAR
SHOULD NOT ALLOW FOR SEVERE THUNDERSTORM DEVELOPMENT FOR THE
REST OF TONIGHT.

LOCALLY HEAVY DOWNPOURS AND CLOUD TO GROUND LIGHTNING STRIKES
ARE POSSIBLE WITH ANY THUNDERSTORM FOR THE REMAINDER OF TONIGHT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SUNDAY JUN 9.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...30 PERCENT.

OTHER HAZARDOUS WEATHER...
AFTER SEVERAL DAYS OF HEAVY RAIN LAST WEEK...THE GROUND IN MANY AREAS
ACROSS CENTRAL AND SOUTHERN OKLAHOMA ARE SATURATED. HEAVY RAINFALL
OVERNIGHT MAY LEAD TO A LOCALIZED FLOOD THREAT. MONITOR THE WEATHER
CLOSELY IN CASE FLOODING DEVELOPS IN YOUR AREA...AND REMEMBER...BE
SMART...TURN AROUND DONT DROWN.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE EXPECTED TO LINGER INTO SUNDAY MORNING OVER CENTRAL
AND SOUTHERN OKLAHOMA...AND PERHAPS WESTERN NORTH TEXAS. HOWEVER...
WITH LITTLE INSTABILITY DURING THE MORNING HOURS...EXPECT STORMS TO
REMAIN NON SEVERE. THOUGH GUSTY WINDS TO 50 MPH MAY ACCOMPANY THE
STRONGER STORMS. OTHER ISOLATED STORMS MAY DEVELOP SUNDAY AFTERNOON IN
THE VICINITY OF A WEAK FRONTAL BOUNDARY ACROSS SOUTHERN OKLAHOMA. THIS
WILL ALSO SERVE AS A FOCUS FOR ISOLATED SHOWERS AND STORMS FROM LATE
SUNDAY NIGHT INTO MONDAY. WHILE A FEW STRONG STORMS WILL BE POSSIBLE...
THE THREAT OF SEVERE WEATHER WILL BE LOW.

OTHER HAZARDOUS WEATHER...
AS MID LEVEL RIDGING BUILDS INTO THE SOUTHERN PLAINS...A PERIOD OF HOT
AND HUMID WEATHER APPEARS LIKELY FROM MID WEEK THROUGH NEXT WEEKEND.
TAKE CARE OF ANY OUTDOOR WORK NOW WHILE THE WEATHER IS RELATIVELY MILD.

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

AUSTIN/KURTZ/MBS

In the hours before

Special weather statement, Jun 8, 11:19 PM CDT, 1 hour 25 minutes before
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Local storm report, Jun 8, 11:24 PM CDT, 1 hour 20 minutes before
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Local storm report, Jun 9, 12:05 AM CDT, 39 minutes before
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Local storm report, Jun 9, 12:22 AM CDT, 22 minutes before
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Local storm report, Jun 9, 12:27 AM CDT, 17 minutes before
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Local storm report, Jun 9, 12:28 AM CDT, 16 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 7:24 PM CDTSpecial Weather StatementOUNWoods51 min
Jun 8, 7:31 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods59 min
Jun 8, 7:33 PM CDTSpecial Weather StatementOUNEllis57 min
Jun 8, 7:48 PM CDTSevere Thunderstorm WarningOUNEllis57 min
Jun 8, 8:07 PM CDTSpecial Weather StatementOUNHarper53 min
Jun 8, 8:17 PM CDTSpecial Weather StatementOUNDewey28 min
Jun 8, 8:36 PM CDTSpecial Weather StatementOUNRoger Mills54 min
Jun 8, 8:54 PM CDTSpecial Weather StatementOUNCuster66 min
Jun 8, 9:23 PM CDTSpecial Weather StatementOUNCuster67 min
Jun 8, 9:24 PM CDTSpecial Weather StatementOUNBeckham66 min
Jun 8, 9:53 PM CDTSpecial Weather StatementOUNBeckham, Washita67 min
Jun 8, 10:05 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Greer, Jackson, Kiowa, Washita55 min
Jun 8, 10:19 PM CDTSpecial Weather StatementOUNHarmon56 min
Jun 8, 10:52 PM CDTSevere Thunderstorm WarningOUNComanche, Greer, Jackson, Kiowa, Tillman53 min
Jun 8, 11:08 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson52 min
Jun 8, 11:19 PM CDTSpecial Weather StatementOUNCaddo, Comanche, Grady56 min
Jun 8, 11:41 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Jackson, Kiowa, Tillman64 min
Jun 9, 12:13 AM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Grady, Jefferson, Stephens62 min
Jun 9, 1:08 AM CDTSpecial Weather StatementOUNJefferson, Stephens52 min
Jun 9, 2:32 AM CDTSpecial Weather StatementOUNLincoln, Oklahoma43 min
Jun 9, 3:11 AM CDTSpecial Weather StatementOUNCleveland, McClain, Pottawatomie49 min
Jun 9, 3:54 AM CDTSpecial Weather StatementOUNBryan, Marshall51 min
Jun 9, 5:05 AM CDTSpecial Weather StatementOUNBryan25 min
Jun 8, 11:54 PM CDTSevere Thunderstorm WarningOUNFoard, Hardeman, Knox66 min
Jun 9, 1:44 AM CDTSevere Thunderstorm WarningOUNArcher, Baylor46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013Every severe thunderstorm warning 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.