Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 384, NWS Norman, OK

June 22, 2006Ellis County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 22, 2006, 11:29 PM CDT for Ellis County, Oklahoma. It was in force for 31 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 22, 2006, 11:29 PM CDT (04:29 UTC)
Expired: Jun 23, 2006, 12:00 AM CDT
In force: 31 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Ellis County, OK

The radar

The Vance AFB radar (KVNX), 157 km from the middle of the area, began a volume at 04:29 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

Dodge City, (KDDC), launched 00:00Z, 4.5 hours before the alert went out and 173 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: 506 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 2033 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 22, 10:10 PM CDT, 1 hour 19 minutes earlier.

Area forecast discussion, Jun 22, 10:10 PM CDT, 1 hour 19 minutes before

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Hazardous weather outlook, Jun 22, 9:10 PM CDT, 2 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
910 PM CDT THU JUN 22 2006

OKZ004>048-050>052-TXZ083>090-231200-
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-
910 PM CDT THU JUN 22 2006

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

.DAY ONE...OVERNIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS WESTERN
OKLAHOMA.

LOCATION...
MAINLY WEST AND NORTH OF A LINE FROM MEDFORD...TO PIEDMONT...
MARLOW...WAURIKA...GRANDFIELD AND HOLLIS.

TIMING...
THROUGH THE OVERNIGHT HOURS.

IMPACTS...
WINDS TO 70 MPH AND QUARTER SIZE HAIL WILL BE THE PRIMARY IMPACTS.

DISCUSSION...
THUNDERSTORMS DEVELOPING ACROSS SOUTHWEST KANSAS AND THE OKLAHOMA
AND TEXAS PANHANDLES...WILL OVERSPREAD THE WESTERN HALF OF
OKLAHOMA...AND NORTH TEXAS OVERNIGHT...WITH WINDS OF 60 TO 70 MPH
POSSIBLE ALONG THE LEADING EDGE OF STORMS IN THE SLIGHT RISK AREA. A
FEW STORMS MAY ALSO BE ACCOMPANIED BY NICKEL TO QUARTER SIZE HAIL.
STORMS ARE EXPECTED TO WEAKEN LATER TONIGHT AS THEY ENCOUNTER LESS
INSTABILITY SOUTH OF THE RED RIVER.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT FRIDAY JUN 23.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...40 PERCENT.

OTHER HAZARDOUS WEATHER...
VERY HEAVY RAIN ACCOMPANYING OVERNIGHT STORMS MAY RESULT IN
LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORM CHANCES WILL DECREASE OVER THE WEEKEND INTO EARLY NEXT
WEEK.

OTHER HAZARDOUS WEATHER...
NONE.

JAMES

In the hours before

Special weather statement, Jun 22, 10:02 PM CDT, 1 hour 27 minutes before

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Special weather statement, Jun 22, 10:40 PM CDT, 49 minutes before

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Special weather statement, Jun 22, 10:56 PM CDT, 33 minutes before

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Special weather statement, Jun 22, 11:01 PM CDT, 28 minutes before

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Special weather statement, Jun 22, 11:14 PM CDT, 15 minutes before

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Special weather statement, Jun 22, 11:22 PM CDT, 7 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 22, 7:32 PM CDT	Severe Thunderstorm Warning	OUN	Pontotoc	43 min
Jun 22, 9:17 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods	58 min
Jun 22, 9:57 PM CDT	Severe Thunderstorm Warning	OUN	Woods	33 min
Jun 22, 10:31 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	44 min
Jun 22, 11:33 PM CDT	Severe Thunderstorm Warning	OUN	Woods	27 min
Jun 22, 11:44 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	46 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2006 Every severe thunderstorm warning in 2006

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.