Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 556, NWS Norman, OK

June 3, 2008Grant County, Kay County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 3, 2008, 9:06 PM CDT for Grant County, Kay County, Oklahoma. It was in force for 54 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 3, 2008, 9:06 PM CDT (02:06 UTC)
Expired: Jun 3, 2008, 10:00 PM CDT
In force: 54 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Grant County, OK, Kay County, OK

The radar

The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 02:09 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.

Issued	Product	Office	Lasted
Jun 3, 7:23 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 2.1 hours before the alert went out and 21 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: 3235 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1929 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 14.7

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 3, 3:47 PM CDT, 5 hours 19 minutes earlier.

Area forecast discussion, Jun 3, 3:47 PM CDT, 5 hours 19 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
347 PM CDT TUE JUN 3 2008

.DISCUSSION...A RIDGE OF VERY WARM AIR WILL REMAIN OVER THE SOUTHERN
PLAINS...BUT WILL YIELD TEMPORARILY TO AN UPPER TROUGH AND SURFACE
FRONT LATE THURSDAY INTO FRIDAY. THE MAIN WEATHER IMPACTS OVER THE
NEXT FEW DAYS APPEAR TO BE WIND AND HEAT...ALTHOUGH SEVERE
THUNDERSTORMS ARE ALSO LIKELY OVER PARTS OF THE REGION.

TONIGHT...LOW LEVEL JET WILL AGAIN KEEP THE ATMOSPHERE WELL MIXED
WITH TEMPERATURES SLOW TO FALL. A WEAK COLD FRONT STALLED EARLIER
TODAY FROM ABOUT ALVA TO GAGE AND INTO THE NORTHERN TEXAS PANHANDLE.
UPSLOPE FLOW NORTH OF THE FRONT WILL SUPPORT DEVELOPMENT OF STRONG
THUNDERSTORMS ALONG THE HIGHER TERRAIN OUT WEST...WITH ACTIVITY
APPROACHING NORTHWEST OKLAHOMA THIS EVENING. THE STORMS MAY
SURVIVE JUST A FEW TENS OF MILES TO THE EAST AND SOUTH OF THE
FRONTAL BOUNDARY WITH HELP FROM A STOUT LOW LEVEL JET. IF THIS
EVENT MATERIALIZES...IT SHOULD AFFECT A RELATIVELY SMALL
AREA...BUT SOME SEVERE HAIL/WIND IS POSSIBLE.

ATTENTION THEN TURNS TO THE UPPER TROUGH DIGGING TO OUR WEST AND
EJECTING OVER THE PLAINS. WEDNESDAY FEATURES THE GREATEST
CYCLOGENESIS OF LOW PRESSURE IN SOUTHEAST COLORADO. TIGHTENING
PRESSURE GRADIENT WILL MAINTAIN GUSTY WINDS...WHILE THE WEAK FRONT
LIFTS OUT OF NORTHERN OKLAHOMA...ALLOWING THE DRYLINE TO SHARPEN
AND PUSH INTO NORTHWEST OKLAHOMA. IN COORDINATION WITH STATE FIRE
OFFICIALS...WILL ISSUE A FIRE WEATHER WATCH FOR THOSE COUNTIES
THAT HAVE SIGNIFICANT COVERAGE OF NEAR DORMANT VEGETATION. STOPPED
JUST SHORT OF ISSUING A WIND ADVISORY FOR THE AFTERNOON/EVENING...
AS THERE IS SOME CONFLICTING EVIDENCE RIGHT NOW. RAPID DEEPENING
OF THE LOW...DEEP MIXING AND MAV GUIDANCE SUPPORT AN
ADVISORY...BUT THE UNUSUALLY WARM ATMOSPHERE WILL KEEP THE LOW
LEVEL JET WELL ABOVE THE GROUND WITH A VEERING PROFILE AND LARGE
SCALE ASCENT AT LOW LEVELS. WILL LET THE NEXT SHIFT ASSESS
GUIDANCE AND OBSERVATIONAL TRENDS BEFORE ISSUING A WIND ADVISORY.

DO NOT ANTICIPATE ANY THUNDERSTORMS WEDNESDAY...GIVEN PLACEMENT OF
ANOMALOUSLY WARM 700 MB TEMPS. THE DEEPENING LOW LEVEL
SOUTHEASTERLIES WILL...HOWEVER...INCREASE MOISTURE TO THE EAST OF
THE DRYLINE...LEADING TO A BETTER CHANCE FOR STORMS THURSDAY
EVENING/NIGHT WITH THE EJECTING TROUGH. GREATEST CHANCE FOR RAIN
AND STRONG STORMS WILL BE FROM NORTHERN INTO CENTRAL
OKLAHOMA...WITH PROGRESSIVELY LESS MID LEVEL COOLING AND LIFT
TOWARD WESTERN NORTH TEXAS.

LOOKS AS THOUGH THIS CYCLE WILL REPEAT EARLY NEXT WEEK AS THE RIDGE
POPS BACK UP...FOLLOWED BY ANOTHER TROUGH PASSING NEAR AND NORTH
OF OKLAHOMA/NORTH TEXAS. NO CHANGES TO GRIDDED FORECAST BEYOND
DAY THREE.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  74  95  73  93 /  10  10  10  10
HOBART OK         74 104  73  99 /  10  10  10  10
WICHITA FALLS TX  75 100  73  97 /   0   0  10  10
GAGE OK           66 102  70  97 /  20  10  10  20
PONCA CITY OK     74  95  79  90 /  20  10  10  10
DURANT OK         74  93  73  91 /   0   0  10  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...FIRE WEATHER WATCH FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY
     EVENING FOR OKZ004-009-010.

TX...NONE.
&&

BURKE/02

Hazardous weather outlook, Jun 3, 8:47 PM CDT, 19 minutes before

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In the hours before

Local storm report, Jun 3, 7:33 PM CDT, 1 hour 33 minutes before

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Local storm report, Jun 3, 7:37 PM CDT, 1 hour 29 minutes before

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Local storm report, Jun 3, 7:47 PM CDT, 1 hour 19 minutes before

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Local storm report, Jun 3, 8:22 PM CDT, 44 minutes before

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Local storm report, Jun 3, 8:29 PM CDT, 37 minutes before

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Local storm report, Jun 3, 8:59 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 3, 7:27 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	48 min
Jun 3, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	64 min
Jun 3, 8:19 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant	56 min
Jun 4, 4:23 AM CDT	Wind Advisory	OUN	Alfalfa, Atoka, Beckham, Blaine, Bryan, Caddo and 42 more	43 hr
Jun 4, 4:30 AM CDT	Red Flag Warning	OUN	Ellis, Harper, Woodward	17 hr
Jun 4, 4:26 PM CDT	Fire Weather Watch	OUN	Ellis, Harper, Woodward	12 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2008 Every severe thunderstorm warning in 2008

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.