Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 393, NWS Norman, OK

May 27, 20135 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 27, 2013, 8:03 PM CDT for 5 counties in Oklahoma. It was in force for 42 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
May 27, 2013, 8:03 PM CDT (01:03 UTC)
Expired
May 27, 2013, 8:45 PM CDT
In force
42 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Blaine County, OK, Custer County, OK, Dewey County, OK, Kingfisher County, OK, Major County, OK

The radar

The Vance AFB radar (KVNX), 97 km from the middle of the area, began a volume at 01:06 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
May 27, 3:47 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 1.1 hours before the alert went out and 234 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, Dodge City, at 00:00Z on 2013-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Dodge City, at 00:00Z on 2013-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4754 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
23 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 May 27, 6:45 PM CDT, 1 hour 18 minutes earlier.

Area forecast discussion, May 27, 6:45 PM CDT, 1 hour 18 minutes before
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Hazardous weather outlook, May 27, 4:00 PM CDT, 4 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
400 PM CDT MON MAY 27 2013

OKZ004>048-050>052-TXZ083>090-281200-
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-
400 PM CDT MON MAY 27 2013

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

.DAY ONE...THIS EVENING AND TONIGHT...

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

LOCATION...
THE SLIGHT RISK AREA IS WEST OF A LINE FROM BLACKWELL TO KINGFISHER
TO FREDERICK OKLAHOMA...EXTENDING SOUTHWARD TO WICHITA FALLS AND ARCHER
CITY IN WESTERN NORTH TEXAS.

IMPACTS...
THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING HAIL UP TO THE
SIZE OF TENNIS BALLS AND WIND GUSTS OF 65 TO 70 MPH.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM NOW THROUGH
11 PM TONIGHT.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS THROUGH THIS
EVENING.

DISCUSSION...
A DRYLINE CONTINUES TO SHARPEN THIS AFTERNOON ACROSS WEST TEXAS. WITH
STRONG SURFACE HEATING...ISOLATED SHOWERS AND STORMS HAVE BEGUN TO DEVELOP.
IF THESE STORMS MANAGE TO PERSIST INTO THIS EVENING...A FEW OF THEM MAY
MOVE INTO FAR SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS...POSING A THREAT
OF LARGE DAMAGING HAIL AND DESTRUCTIVE WIND GUSTS.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY MAY 28.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...90 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...80 PERCENT.

OTHER HAZARDOUS WEATHER...
BREEZY SOUTH WINDS WILL CONTINUE INTO THE EVENING HOURS. WIND GUSTS
OF 35 TO 40 MPH WILL MAKE TRAVEL ON EAST TO WEST ROADWAYS DIFFICULT...
ESPECIALLY IN HIGH PROFILE VEHICLES. USE CAUTION IF TRAVELING THROUGH
THIS EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORM CHANCES WILL PERSIST THROUGH THE WEEK AND THE WEEKEND.
THERE WILL BE A CHANCE FOR SEVERE WEATHER AGAIN ACROSS WESTERN OKLAHOMA
AND WESTERN NORTH TEXAS ON TUESDAY... AND SPREAD EAST TO INCLUDE CENTRAL
OKLAHOMA ON WEDNESDAY. SEVERE WEATHER WILL REMAIN POSSIBLE ACROSS THE
AREA THROUGH THE WEEK.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
TUESDAY.

02/AUSTIN

In the hours before

Local storm report, May 27, 7:32 PM CDT, 31 minutes before
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Local storm report, May 27, 7:33 PM CDT, 30 minutes before
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Special weather statement, May 27, 7:35 PM CDT, 28 minutes before
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Local storm report, May 27, 7:41 PM CDT, 22 minutes before
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Local storm report, May 27, 7:59 PM CDT, 4 minutes before
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Local storm report, May 27, 8:00 PM CDT, 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 7:21 PM CDTSpecial Weather StatementOUNKiowa24 min
May 27, 7:23 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Dewey, Washita67 min
May 27, 7:55 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Canadian, Kingfisher50 min
May 28, 4:55 PM CDTSpecial Weather StatementOUNHarper35 min
May 28, 5:00 PM CDTSevere Thunderstorm WarningOUNHarper45 min
May 28, 5:43 PM CDTSevere Thunderstorm WarningOUNHarper32 min
May 28, 5:59 PM CDTSpecial Weather StatementOUNWoods31 min
May 28, 6:28 PM CDTSevere Thunderstorm WarningOUNHarper32 min
May 27, 7:35 PM CDTSpecial Weather StatementOUNFoard40 min
May 27, 8:15 PM CDTSpecial Weather StatementOUNFoard, Knox45 min
May 28, 5:21 PM CDTSpecial Weather StatementOUNBaylor39 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.