Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 313, NWS Norman, OK

October 12, 20144 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Oct 12, 2014, 8:11 PM CDT for 4 counties in Oklahoma. It was in force for 49 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
Oct 12, 2014, 8:11 PM CDT (01:11 UTC)
Expired
Oct 12, 2014, 9:00 PM CDT
In force
49 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Blaine County, OK, Caddo County, OK, Custer County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 128 km from the middle of the area, began a volume at 01:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 12, 3:48 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.2 hours before the alert went out and 122 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 00:00Z on 2014-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 51 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 00:00Z on 2014-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 352 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
51 J/kg
Mixed-layer CIN
-430 J/kg
Mixed-layer LCL
1221 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
352 m²/s²
0-3 km storm-relative helicity
337 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Oct 12, 6:29 PM CDT, 1 hour 42 minutes earlier.

Area forecast discussion, Oct 12, 6:29 PM CDT, 1 hour 42 minutes before
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Hazardous weather outlook, Oct 12, 7:59 PM CDT, 12 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
759 PM CDT SUN OCT 12 2014

OKZ004>048-050>052-TXZ083>090-140100-
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-
759 PM CDT SUN OCT 12 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

.DAY ONE...TONIGHT...

.THUNDERSTORMS...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS
OKLAHOMA AND WESTERN NORTH TEXAS.

TIMING...
STORMS HAVE DEVELOPED ACROSS WESTERN OKLAHOMA...AND WILL
SPREAD EAST AND SOUTHEAST THROUGH THE EVENING AND OVERNIGHT
HOURS...EXITING FAR SOUTHEAST OKLAHOMA BY SUNRISE MONDAY.

IMPACTS...
DAMAGING WIND GUSTS OF 60 MPH TO 80 MPH...
HAIL UP TO THE SIZE OF HALF-DOLLARS...

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD CONTINUE TO PLAN FOR SEVERE WEATHER OPERATIONS
TONIGHT.

DISCUSSION...
A POTENT STORM SYSTEM WILL DIVE SOUTHWARD INTO THE SOUTHERN
PLAINS TONIGHT INTO MONDAY. AS THIS OCCURS...A FRONT WILL
SURGE SOUTHWARD OVER OKLAHOMA AND NORTHERN TEXAS...SETTING THE
STAGE FOR WIDESPREAD THUNDERSTORMS.

ISOLATED TO NUMEROUS THUNDERSTORMS OVER WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS WILL DEVELOP INTO A SOUTHWEST TO NORTHEAST
ORIENTED SQUALL LINE BY MIDNIGHT. MOST OF THE SEVERE WIND GUSTS
ARE EXPECTED WITH THE SQUALL LINE...WHICH IS EXPECTED TO MOVE INTO
CENTRAL PORTIONS OF OKLAHOMA BY MIDNIGHT.

GREATER MOISTURE AND INSTABILITY WILL BE SEEN ACROSS SOUTH-CENTRAL
AND SOUTHEAST OKLAHOMA. THIS WILL PROMOTE THE HIGHEST POTENTIAL FOR
SEVERE THUNDERSTORM ACTIVITY TONIGHT...MAINLY AFTER MIDNIGHT.

.STRONG WINDS LATE TONIGHT...
STRONG NORTHERLY WINDS ARE EXPECTED BEHIND THE COLD FRONT LATE
TONIGHT...AFTER 4 AM IN WESTERN OKLAHOMA AND WESTERN NORTH
TEXAS. SUSTAINED NORTH TO NORTHWEST WINDS OF 30 TO 35 MPH ARE
EXPECTED...ALONG WITH OCCASIONAL GUSTS OF 40 TO 50 MPH.
THIS MAY MAKE TRAVEL ON EAST TO WEST ORIENTED ROADWAYS DIFFICULT
MUCH OF THE DAY ON MONDAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

.THUNDERSTORMS...
SHOWERS AND A FEW STORMS WILL BE ONGOING MAINLY EAST OF
INTERSTATE-35 EARLY MONDAY MORNING. SEVERE WEATHER CHANCES WILL
BE DIMINISHING QUICKLY DURING THE MORNING HOURS.

.STRONG WINDS MONDAY...
STRONG NORTHERLY WINDS ARE EXPECTED ON MONDAY. SUSTAINED WINDS OF
30 TO 35 MPH ARE EXPECTED...ALONG WITH OCCASIONAL GUSTS OF 40 TO
50 MPH. THIS WILL ESPECIALLY BE TRUE WEST OF INTERSTATE 35. THIS
MAY MAKE TRAVEL ON EAST TO WEST ORIENTED ROADWAYS DIFFICULT MUCH
OF THE DAY ON MONDAY.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

AUSTIN/11/MBS

In the hours before

Special weather statement, Oct 12, 6:55 PM CDT, 1 hour 16 minutes before
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Special weather statement, Oct 12, 7:16 PM CDT, 55 minutes before
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Special weather statement, Oct 12, 7:17 PM CDT, 54 minutes before
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Local storm report, Oct 12, 7:44 PM CDT, 27 minutes before
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Special weather statement, Oct 12, 7:46 PM CDT, 25 minutes before
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Special weather statement, Oct 12, 7:57 PM CDT, 14 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 7:16 PM CDTSpecial Weather StatementOUNEllis, Harper44 min
Oct 12, 7:17 PM CDTSpecial Weather StatementOUNBeckham43 min
Oct 12, 7:22 PM CDTSevere Thunderstorm WarningOUNCuster, Washita53 min
Oct 12, 7:46 PM CDTSpecial Weather StatementOUNBeckham, Greer, Harmon, Jackson59 min
Oct 12, 7:57 PM CDTSpecial Weather StatementOUNWoodward48 min
Oct 12, 8:22 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Kiowa53 min
Oct 12, 8:24 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson51 min
Oct 12, 8:27 PM CDTSpecial Weather StatementOUNWoods33 min
Oct 12, 8:37 PM CDTSpecial Weather StatementOUNWashita38 min
Oct 12, 8:44 PM CDTSpecial Weather StatementOUNCanadian46 min
Oct 12, 8:52 PM CDTSevere Thunderstorm WarningOUNGreer, Jackson, Kiowa, Tillman53 min
Oct 12, 8:58 PM CDTSevere Thunderstorm WarningOUNCuster, Greer, Kiowa, Washita47 min
Oct 12, 9:26 PM CDTSevere Thunderstorm WarningOUNComanche, Kiowa, Tillman64 min
Oct 12, 9:35 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Canadian, Kingfisher40 min
Oct 12, 9:46 PM CDTSevere Thunderstorm WarningOUNCaddo, Kiowa, Washita44 min
Oct 12, 9:50 PM CDTSevere Thunderstorm WarningOUNCotton, Tillman40 min
Oct 12, 10:00 PM CDTSevere Thunderstorm WarningOUNTillman30 min
Oct 12, 10:09 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Canadian, Comanche, Cotton, Grady and 2 more68 min
Oct 12, 10:25 PM CDTSevere Thunderstorm WarningOUNCotton, Jefferson, Stephens, Tillman50 min
Oct 12, 10:56 PM CDTSpecial Weather StatementOUNCleveland, Logan, McClain, Noble, Oklahoma64 min
Oct 12, 11:14 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Grady, Jefferson, McClain, Murray and 1 more31 min
Oct 12, 11:49 PM CDTSpecial Weather StatementOUNCarter, Cleveland, Garvin, Johnston, Love, Marshall and 4 more56 min
Oct 13, 12:43 AM CDTSpecial Weather StatementOUNAtoka, Bryan, Coal, Hughes, Johnston47 min
Oct 13, 12:47 AM CDTSevere Thunderstorm WarningOUNCarter, Love, Marshall43 min
Oct 13, 1:03 AM CDTAreal Flood AdvisoryOUNBryan, Carter, Coal, Johnston, Love, Marshall117 min
Oct 13, 1:28 AM CDTSevere Thunderstorm WarningOUNAtoka, Bryan, Coal, Johnston, Love, Marshall62 min
Oct 13, 1:49 AM CDTAreal Flood AdvisoryOUNAtoka, Bryan, Coal, Johnston116 min
Oct 13, 2:25 AM CDTSevere Thunderstorm WarningOUNAtoka, Bryan50 min
Oct 12, 8:53 PM CDTSevere Thunderstorm WarningOUNBaylor, Knox52 min
Oct 12, 9:14 PM CDTSpecial Weather StatementOUNBaylor31 min
Oct 12, 9:27 PM CDTSevere Thunderstorm WarningOUNBaylor, Foard, Knox, Wilbarger34 min
Oct 12, 9:33 PM CDTSpecial Weather StatementOUNBaylor27 min
Oct 12, 9:43 PM CDTSpecial Weather StatementOUNWilbarger32 min
Oct 12, 10:16 PM CDTSpecial Weather StatementOUNArcher, Clay, Wichita44 min
Oct 12, 11:05 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor25 min
Oct 12, 11:31 PM CDTSpecial Weather StatementOUNArcher, Clay29 min
Oct 13, 12:01 AM CDTSpecial Weather StatementOUNClay29 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2014Every severe thunderstorm warning in 2014

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.