Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 445, NWS Norman, OK

June 10, 2009Payne County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 10, 2009, 3:28 PM CDT for Payne County, Oklahoma. It was in force for 32 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 10, 2009, 3:28 PM CDT (20:28 UTC)
Expired
Jun 10, 2009, 4:00 PM CDT
In force
32 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

County Payne County, OK

The radar

The Norman radar (KTLX), 87 km from the middle of the area, began a volume at 20:28 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

Lamont, OK (KLMN), launched 12:00Z, 8.5 hours before the alert went out and 75 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, Lamont, OK at 12:00Z on 2009-06-10Temperature 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, Lamont, OK at 12:00Z on 2009-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2256 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
95 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 Jun 10, 3:01 PM CDT, 27 minutes earlier.

Area forecast discussion, Jun 10, 3:01 PM CDT, 27 minutes before
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Hazardous weather outlook, Jun 10, 11:45 AM CDT, 3 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1145 AM CDT WED JUN 10 2009

OKZ004>048-050>052-TXZ083>090-111200-
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-
1145 AM CDT WED JUN 10 2009

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT ACROSS ALL OF WESTERN NORTH TEXAS AND OKLAHOMA.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE AFTER 1 PM.

IMPACTS...
DAMAGE TO AUTOMOBILES...ROOFTOPS... AND VEGETATION FROM HAIL UP TO
TWO-INCHES IN DIAMETER.  DAMAGING WIND GUSTS TO 65 MPH.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
OKLAHOMA AND WESTERN NORTH TEXAS SHOULD PLAN FOR SEVERE WEATHER
OPERATIONS THROUGH TONIGHT.

DISCUSSION...
AN UPPER-LEVEL DISTURBANCE WILL MOVE ACROSS THE SOUTHERN PLAINS LATE
TODAY AND TONIGHT... AS A WEAK COLD FRONT MOVES SLOWLY SOUTH FROM
NORTHWEST INTO SOUTHERN OKLAHOMA. OTHER SURFACE BOUNDARIES...
INCLUDING A WEAK DRYLINE... WILL ALSO BE PRESENT ACROSS WESTERN
OKLAHOMA AND WESTERN NORTH TEXAS. THESE BOUNDARIES WILL LIKELY BE
POINTS FOR STORM INITIATION THIS AFTERNOON AND TONIGHT. HOWEVER...
ADDITIONAL THUNDERSTORM DEVELOPMENT WILL BE POSSIBLE ELSEWHERE THIS
AFTERNOON AS THE CAPPING INVERSION THAT LIMITED DEVELOPMENT ON
TUESDAY IS NO LONGER PRESENT. MODERATE TO HIGH INSTABILITY AND WIND
SHEAR WILL SUPPORT THE DEVELOPMENT OF SUPERCELL THUNDERSTORMS WITH
LARGE HAIL AND DAMAGING WIND GUSTS BEING THE MAIN THREATS.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT THURSDAY JUN 11.
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...THURSDAY THROUGH TUESDAY...

THUNDERSTORM OUTLOOK...
THE MENTIONED FRONTAL BOUNDARY IS FORECAST TO REMAIN OVER OR NEAR
OKLAHOMA AND NORTH TEXAS THROUGH THE WEEKEND. WITH THE BOUNDARY
CLOSE BY...ALONG WITH PLENTY OF MOISTURE AND MODERATE TO STRONG JET
STREAM FLOW...CHANCES FOR THUNDERSTORMS WILL CONTINUE INTO EARLY
NEXT WEEK.

OTHER HAZARDOUS WEATHER...
NONE.

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

30

In the hours before

Local storm report, Jun 10, 1:58 PM CDT, 1 hour 30 minutes before
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Local storm report, Jun 10, 2:42 PM CDT, 46 minutes before
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Special weather statement, Jun 10, 2:44 PM CDT, 44 minutes before
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Local storm report, Jun 10, 2:52 PM CDT, 36 minutes before
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Local storm report, Jun 10, 3:03 PM CDT, 25 minutes before
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Local storm report, Jun 10, 3:26 PM CDT, 2 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 11:45 AM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Harmon, Roger Mills47 min
Jun 10, 12:26 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson49 min
Jun 10, 12:52 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Canadian, Custer, Kiowa, Washita68 min
Jun 10, 12:56 PM CDTSevere Thunderstorm WarningOUNHarmon, Jackson, Tillman49 min
Jun 10, 1:40 PM CDTSevere Thunderstorm WarningOUNCanadian, Kingfisher, Logan, Oklahoma50 min
Jun 10, 1:46 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Greer, Jackson, Kiowa, Tillman44 min
Jun 10, 2:20 PM CDTSevere Thunderstorm WarningOUNCarter, Comanche, Cotton, Garvin, Jefferson, Love and 1 more55 min
Jun 10, 3:14 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Grady, Jefferson, Love, McClain and 3 more61 min
Jun 10, 4:04 PM CDTAreal Flood AdvisoryOUNStephens3 hr
Jun 10, 4:07 PM CDTSevere Thunderstorm WarningOUNAtoka, Carter, Coal, Garvin, Hughes, Johnston and 6 more38 min
Jun 10, 4:43 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Hughes, Johnston, Pontotoc, Seminole47 min
Jun 10, 5:25 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal44 min
Jun 10, 6:44 PM CDTSevere Thunderstorm WarningOUNBryan46 min
Jun 10, 2:28 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor47 min
Jun 10, 3:15 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor45 min
Jun 10, 4:13 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor47 min
Jun 10, 4:44 PM CDTAreal Flood AdvisoryOUNArcher, Baylor3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2009Every severe thunderstorm warning in 2009

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.