Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Norman, OK

August 6, 2012Custer County, Oklahoma

NWS Norman, OK issued this special weather statement at Aug 6, 2012, 4:45 PM CDT for Custer County, Oklahoma. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 6, 2012, 4:45 PM CDT (21:45 UTC)
Expired: Aug 6, 2012, 5:15 PM CDT
In force: 30 min
Issued by: NWS Norman, OK

County Custer County, OK

The radar

The Vance AFB radar (KVNX), 136 km from the middle of the area, began a volume at 21:48 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

Norman, OK (KOUN), launched 12:00Z, 9.8 hours before the alert went out and 140 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: 78 J/kg
Mixed-layer CIN: -236 J/kg
Mixed-layer LCL: 1858 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: 40 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

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 6, 3:59 PM CDT, 46 minutes earlier.

Area forecast discussion, Aug 6, 3:59 PM CDT, 46 minutes before

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Hazardous weather outlook, Aug 6, 12:49 PM CDT, 3 hours 56 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
1249 PM CDT MON AUG 6 2012

OKZ004>048-050>052-TXZ083>090-071800-
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-
1249 PM CDT MON AUG 6 2012

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

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE TODAY AND
TONIGHT...BUT CHANCES FOR ORGANIZED SEVERE STORMS ARE LOW.

DISCUSSION...
A MAJORITY OF THE REGION WILL REMAIN DRY TODAY...BUT WIDELY
SCATTERED THUNDERSTORMS WILL BE POSSIBLE MAINLY WEST OF I35 AND
SOUTH OF I40. ALTHOUGH SMALL HAIL AND STRONG WIND GUSTS WILL BE
POSSIBLE WITH THE STRONGER STORMS...THE CHANCE OF ORGANIZED SEVERE
WEATHER IS FAIRLY LOW.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY AUG 7.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...40 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...20 PERCENT.

OTHER HAZARDOUS WEATHER...
HIGH FIRE DANGER WILL PERSIST ACROSS PORTIONS OF THE AREA DUE TO
A COMBINATION HOT AND DRY WEATHER AND DRY VEGETATION.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

THUNDERSTORM OUTLOOK...
THERE WILL BE A CHANCE OF THUNDERSTORMS NEAR A COLD FRONT ON
TUESDAY AND WEDNESDAY. ALTHOUGH WIDESPREAD SEVERE WEATHER IS NOT
ANTICIPATED...SOME OF THE STRONGER STORMS WILL BE CAPABLE OF
PRODUCING VERY STRONG WIND GUSTS...SMALL HAIL AND BRIEF HEAVY
RAINFALL.

OTHER HAZARDOUS WEATHER...
WHILE RED FLAG FIRE CONDITIONS ARE NOT ANTICIPATED THROUGH THE
WEEK...THE ONGOING DROUGHT AND CONTINUED HOT TEMPERATURES WILL
KEEP FIRE DANGER MODERATE TO HIGH.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5
AM CDT TUESDAY.

In the hours before

Special weather statement, Aug 6, 4:10 PM CDT, 35 minutes before

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Local storm report, Aug 6, 4:12 PM CDT, 33 minutes before

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Special weather statement, Aug 6, 4:14 PM CDT, 31 minutes before

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Special weather statement, Aug 6, 4:15 PM CDT, 30 minutes before

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Special weather statement, Aug 6, 4:44 PM CDT, 1 minute before

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Special weather statement, Aug 6, 4:45 PM CDT, 0 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
Aug 5, 7:42 PM CDT	Special Weather Statement	OUN	Bryan	33 min
Aug 5, 10:39 PM CDT	Special Weather Statement	OUN	Love	36 min
Aug 6, 2:46 PM CDT	Special Weather Statement	OUN	Bryan	44 min
Aug 6, 3:11 PM CDT	Heat Advisory	OUN	Atoka, Blaine, Bryan, Caddo, Canadian, Carter and 25 more	31 hr
Aug 6, 3:33 PM CDT	Special Weather Statement	OUN	Bryan, Johnston, Marshall	27 min
Aug 6, 3:46 PM CDT	Special Weather Statement	OUN	Custer, Washita	29 min
Aug 6, 4:00 PM CDT	Special Weather Statement	OUN	Canadian	30 min
Aug 6, 4:10 PM CDT	Special Weather Statement	OUN	Bryan, Johnston, Marshall	50 min
Aug 6, 4:14 PM CDT	Special Weather Statement	OUN	Washita	46 min
Aug 6, 4:44 PM CDT	Special Weather Statement	OUN	Beckham	31 min
Aug 6, 5:16 PM CDT	Special Weather Statement	OUN	Bryan	29 min
Aug 6, 5:17 PM CDT	Special Weather Statement	OUN	Cotton	28 min
Aug 6, 5:18 PM CDT	Special Weather Statement	OUN	Blaine	27 min
Aug 6, 5:19 PM CDT	Special Weather Statement	OUN	Roger Mills	26 min
Aug 6, 5:47 PM CDT	Special Weather Statement	OUN	Caddo	28 min
Aug 6, 5:48 PM CDT	Special Weather Statement	OUN	Comanche	27 min
Aug 6, 6:32 PM CDT	Special Weather Statement	OUN	Blaine	28 min
Aug 6, 6:35 PM CDT	Special Weather Statement	OUN	Comanche	25 min
Aug 6, 4:15 PM CDT	Special Weather Statement	OUN	Clay	45 min
Aug 6, 6:33 PM CDT	Special Weather Statement	OUN	Archer, Wichita	27 min

Nearby

Special Weather Statements in Oklahoma, 2012 Every special weather statement in 2012

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.