Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 744, NWS Norman, OK

June 27, 2008Alfalfa County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 27, 2008, 10:02 PM CDT for Alfalfa County, Oklahoma. It was in force for 43 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 27, 2008, 10:02 PM CDT (03:02 UTC)
Expired: Jun 27, 2008, 10:45 PM CDT
In force: 43 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

County Alfalfa County, OK

The radar

The Vance AFB radar (KVNX), 18 km from the middle of the area, began a volume at 03:03 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 00:00Z, 3.0 hours before the alert went out and 76 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: 2892 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1738 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 320 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 21.2

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 27, 9:51 PM CDT, 11 minutes earlier.

Area forecast discussion, Jun 27, 9:51 PM CDT, 11 minutes before

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Hazardous weather outlook, Jun 27, 8:15 PM CDT, 1 hour 47 minutes before

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In the hours before

Special weather statement, Jun 27, 7:31 PM CDT, 2 hours 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
731 PM CDT FRI JUN 27 2008

OKZ006-007-280100-
ALFALFA OK-GRANT OK-
731 PM CDT FRI JUN 27 2008

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR ALFALFA AND GRANT COUNTIES.

A STRONG THUNDERSTORM WAS LOCATED 4 MILES SOUTHWEST OF MANCHESTER AT
731 PM CDT...MOVING EAST AT 14 MPH.

SMALL HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE.

Local storm report, Jun 27, 8:20 PM CDT, 1 hour 42 minutes before

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Local storm report, Jun 27, 9:02 PM CDT, 1 hour before

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Special weather statement, Jun 27, 9:21 PM CDT, 41 minutes before

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Special weather statement, Jun 27, 9:40 PM CDT, 22 minutes before

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Special weather statement, Jun 27, 9:57 PM CDT, 5 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 27, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant	48 min
Jun 27, 8:27 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	48 min
Jun 27, 9:14 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	46 min
Jun 28, 6:51 AM CDT	Wind Advisory	OUN	Beckham, Blaine, Caddo, Canadian, Custer, Dewey and 5 more	2 hr
Jun 28, 2:02 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	43 min
Jun 28, 2:45 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	45 min
Jun 28, 2:53 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love	67 min
Jun 28, 2:55 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	50 min
Jun 28, 3:32 PM CDT	Severe Thunderstorm Warning	OUN	Johnston	43 min
Jun 28, 3:52 PM CDT	Special Weather Statement	OUN	Carter	10 min
Jun 28, 2:18 PM CDT	Severe Thunderstorm Warning	OUN	Clay, Wichita	42 min
Jun 28, 2:21 PM CDT	Severe Thunderstorm Warning	OUN	Foard	39 min
Jun 28, 2:39 PM CDT	Severe Thunderstorm Warning	OUN	Baylor	51 min
Jun 28, 2:41 PM CDT	Severe Thunderstorm Warning	OUN	Knox	49 min
Jun 28, 2:56 PM CDT	Severe Thunderstorm Warning	OUN	Foard	64 min
Jun 28, 3:30 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	60 min
Jun 28, 3:35 PM CDT	Severe Thunderstorm Warning	OUN	Baylor	55 min
Jun 28, 3:45 PM CDT	Severe Thunderstorm Warning	OUN	Archer	60 min
Jun 28, 4:44 PM CDT	Areal Flood Advisory	OUN	Archer, Clay	3 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.