Alert archive / Oklahoma / Special Weather Statements in 2011

Special Weather Statement, NWS Norman, OK

August 6, 2011Noble County, Payne County, Oklahoma

NWS Norman, OK issued this special weather statement at Aug 6, 2011, 8:21 PM CDT for Noble County, Payne County, Oklahoma. It was in force for 24 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, 2011, 8:21 PM CDT (01:21 UTC)
Expired
Aug 6, 2011, 8:45 PM CDT
In force
24 min
Issued by
NWS Norman, OK

Counties Noble County, OK, Payne County, OK

The radar

The Vance AFB radar (KVNX), 103 km from the middle of the area, began a volume at 01:24 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, 1.4 hours before the alert went out and 49 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-pSkew-T log-p diagram, Lamont, OK at 00:00Z on 2011-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 805 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lamont, OK at 00:00Z on 2011-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
805 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
2723 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

560 
WWUS84 KOUN 070121
SPSOUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
821 PM CDT SAT AUG 6 2011

OKZ012-013-019-020-070145-
GARFIELD OK-LOGAN OK-NOBLE OK-PAYNE OK-
821 PM CDT SAT AUG 6 2011

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR GARFIELD...LOGAN...NOBLE AND
PAYNE COUNTIES.

AT 820 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM NEAR 
BISON AND WAUKOMIS...TO JUST NORTH OF STILLWATER...MOVING EAST AT
20 MPH. ALONG WITH STRONG WIND GUSTS...FREQUENT CLOUD TO GROUND 
LIGHTNING WILL OCCUR.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

LAT...LON 3649 9703 3634 9702 3634 9693 3626 9692
      3625 9683 3622 9681 3617 9681 3616 9679
      3600 9682 3615 9767 3617 9768 3623 9807
      3640 9755 3652 9700

$$

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 6, 7:00 PM CDTSpecial Weather StatementOUNKingfisher45 min
Aug 6, 7:13 PM CDTSpecial Weather StatementOUNAlfalfa, Garfield32 min
Aug 6, 7:25 PM CDTSpecial Weather StatementOUNGarfield, Grant35 min
Aug 6, 7:32 PM CDTSpecial Weather StatementOUNOklahoma28 min
Aug 6, 7:34 PM CDTSpecial Weather StatementOUNGarfield26 min
Aug 6, 7:55 PM CDTSpecial Weather StatementOUNLogan, Oklahoma20 min
Aug 6, 7:58 PM CDTSpecial Weather StatementOUNNoble, Payne17 min
Aug 6, 8:06 PM CDTSpecial Weather StatementOUNGarvin, Pottawatomie, Seminole24 min
Aug 6, 8:18 PM CDTSpecial Weather StatementOUNOklahoma12 min
Aug 7, 1:53 AM CDTSpecial Weather StatementOUNWashita22 min
Aug 7, 2:02 PM CDTSpecial Weather StatementOUNEllis, Woodward28 min
Aug 7, 2:23 PM CDTHeat AdvisoryOUNAtoka, Beckham, Bryan, Caddo, Canadian, Carter and 28 more5 days
Aug 7, 2:26 PM CDTSpecial Weather StatementOUNEllis34 min
Aug 7, 2:58 PM CDTSpecial Weather StatementOUNEllis32 min
Aug 7, 3:25 PM CDTSpecial Weather StatementOUNEllis35 min
Aug 7, 3:55 PM CDTSpecial Weather StatementOUNRoger Mills20 min
Aug 7, 4:28 PM CDTSpecial Weather StatementOUNRoger Mills17 min
Aug 7, 4:47 PM CDTSpecial Weather StatementOUNRoger Mills13 min
Aug 7, 4:54 PM CDTSpecial Weather StatementOUNWoods21 min
Aug 7, 5:01 PM CDTSpecial Weather StatementOUNRoger Mills29 min
Aug 7, 5:03 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods42 min
Aug 7, 5:33 PM CDTSpecial Weather StatementOUNRoger Mills12 min
Aug 7, 5:50 PM CDTSpecial Weather StatementOUNBeckham25 min

Nearby

Special Weather Statements in Oklahoma, 2011Every special weather statement in 2011

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.