Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 314, NWS Norman, OK

April 23, 2008Garfield County, Logan County, Noble County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 23, 2008, 7:09 PM CDT for Garfield County, Logan County, Noble County, Oklahoma. It was in force for 44 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: Apr 23, 2008, 7:09 PM CDT (00:09 UTC)
Expired: Apr 23, 2008, 7:53 PM CDT
In force: 44 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Garfield County, OK, Logan County, OK, Noble County, OK

The radar

The Vance AFB radar (KVNX), 81 km from the middle of the area, began a volume at 00:11 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, 0.2 hours before the alert went out and 43 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: 1327 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 739 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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 Apr 23, 3:37 PM CDT, 3 hours 32 minutes earlier.

Area forecast discussion, Apr 23, 3:37 PM CDT, 3 hours 32 minutes before

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In the hours before

Special weather statement, Apr 23, 6:35 PM CDT, 34 minutes before

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Local storm report, Apr 23, 6:44 PM CDT, 25 minutes before

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Local storm report, Apr 23, 6:59 PM CDT, 10 minutes before

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Special weather statement, Apr 23, 6:59 PM CDT, 10 minutes before

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Special weather statement, Apr 23, 7:00 PM CDT, 9 minutes before

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Special weather statement, Apr 23, 7:02 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
Apr 23, 7:38 PM CDT	Severe Thunderstorm Warning	OUN	Atoka	52 min
Apr 23, 7:49 PM CDT	Severe Thunderstorm Warning	OUN	Noble	26 min
Apr 23, 9:40 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	50 min
Apr 23, 9:56 PM CDT	Severe Thunderstorm Warning	OUN	Atoka	49 min
Apr 23, 10:38 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	19 min
Apr 24, 10:52 AM CDT	Red Flag Warning	OUN	Beckham, Ellis, Greer, Harmon, Harper, Jackson and 1 more	8 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.