Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 516, NWS Norman, OK

June 9, 2013Archer County, Baylor County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Jun 9, 2013, 1:44 AM CDT for Archer County, Baylor County, Texas. It was in force for 46 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, 1:44 AM CDT (06:44 UTC)
Expired: Jun 9, 2013, 2:30 AM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Archer County, TX, Baylor County, TX

The radar

The Altus AFB radar (KFDR), 83 km from the middle of the area, began a volume at 06:47 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, 6.7 hours before the alert went out and 310 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: 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, 1 hour 45 minutes earlier.

Area forecast discussion, Jun 8, 11:59 PM CDT, 1 hour 45 minutes before

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Hazardous weather outlook, Jun 8, 10:06 PM CDT, 3 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

Local storm report, Jun 8, 11:24 PM CDT, 2 hours 20 minutes before

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Local storm report, Jun 9, 12:05 AM CDT, 1 hour 39 minutes before

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Local storm report, Jun 9, 12:22 AM CDT, 1 hour 22 minutes before

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Local storm report, Jun 9, 12:27 AM CDT, 1 hour 17 minutes before

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Local storm report, Jun 9, 12:28 AM CDT, 1 hour 16 minutes before

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Special weather statement, Jun 9, 1:08 AM CDT, 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 7:24 PM CDT	Special Weather Statement	OUN	Woods	51 min
Jun 8, 7:31 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	59 min
Jun 8, 7:33 PM CDT	Special Weather Statement	OUN	Ellis	57 min
Jun 8, 7:48 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	57 min
Jun 8, 8:07 PM CDT	Special Weather Statement	OUN	Harper	53 min
Jun 8, 8:17 PM CDT	Special Weather Statement	OUN	Dewey	28 min
Jun 8, 8:36 PM CDT	Special Weather Statement	OUN	Roger Mills	54 min
Jun 8, 8:54 PM CDT	Special Weather Statement	OUN	Custer	66 min
Jun 8, 9:23 PM CDT	Special Weather Statement	OUN	Custer	67 min
Jun 8, 9:24 PM CDT	Special Weather Statement	OUN	Beckham	66 min
Jun 8, 9:53 PM CDT	Special Weather Statement	OUN	Beckham, Washita	67 min
Jun 8, 10:05 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Greer, Jackson, Kiowa, Washita	55 min
Jun 8, 10:19 PM CDT	Special Weather Statement	OUN	Harmon	56 min
Jun 8, 10:52 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Greer, Jackson, Kiowa, Tillman	53 min
Jun 8, 11:08 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	52 min
Jun 8, 11:19 PM CDT	Special Weather Statement	OUN	Caddo, Comanche, Grady	56 min
Jun 8, 11:41 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Jackson, Kiowa, Tillman	64 min
Jun 9, 12:13 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Jefferson, Stephens	62 min
Jun 9, 1:08 AM CDT	Special Weather Statement	OUN	Jefferson, Stephens	52 min
Jun 9, 2:32 AM CDT	Special Weather Statement	OUN	Lincoln, Oklahoma	43 min
Jun 9, 3:11 AM CDT	Special Weather Statement	OUN	Cleveland, McClain, Pottawatomie	49 min
Jun 9, 3:54 AM CDT	Special Weather Statement	OUN	Bryan, Marshall	51 min
Jun 9, 5:05 AM CDT	Special Weather Statement	OUN	Bryan	25 min
Jun 8, 11:54 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Knox	66 min
Jun 9, 12:44 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Foard, Knox, Wichita, Wilbarger	61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Every 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.