Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Norman, OK

August 18, 2012Lincoln County, Oklahoma County, Oklahoma

NWS Norman, OK issued this special weather statement at Aug 18, 2012, 10:21 AM CDT for Lincoln County, Oklahoma County, Oklahoma. It was in force for 39 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 18, 2012, 10:21 AM CDT (15:21 UTC)
Expired
Aug 18, 2012, 11:00 AM CDT
In force
39 min
Issued by
NWS Norman, OK

Counties Lincoln County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 31 km from the middle of the area, began a volume at 15:23 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, 3.4 hours before the alert went out and 46 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, Norman, OK at 12:00Z on 2012-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 884 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, Norman, OK at 12:00Z on 2012-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 square meters per square second.193958Sfc1 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
884 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
892 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
395 m²/s²
Significant tornado parameter
0.0
Supercell composite
13.2

Open this sounding in Storm Lab

The text

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

164 
WWUS84 KOUN 181522
SPSOUN

SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 1021 AM 
CDT SAT AUG 18 2012

OKZ019-024>026-181600-
LOGAN OK-LINCOLN OK-OKLAHOMA OK-CANADIAN OK-
1021 AM CDT SAT AUG 18 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LOGAN...LINCOLN...
OKLAHOMA AND EASTERN CANADIAN COUNTIES UNTIL 1100 AM CDT...

AT 1018 AM CDT...STRONG THUNDERSTORMS WERE LOCATED FROM FROM 5 MILES 
SOUTHEAST OF MERIDIAN TO 4 MILES SOUTHEAST OF PIEDMONT AND 
WERE MOVING SOUTHEAST AT 40 MPH. WIND GUSTS OF 40 TO 50 MPH...BRIEF 
HEAVY DOWPOURS AND FREQUENT LIGHTNING CAN BE EXPECTED. SMALL HAIL 
WILL ALSO BE POSSIBLE.

LOCATIONS IMPACTED INCLUDE...
OKLAHOMA CITY...EDMOND...MIDWEST CITY...DEL CITY...YUKON...BETHANY...
MUSTANG...THE VILLAGE...WARR ACRES...CHOCTAW...HARRAH...NICHOLS
HILLS...SPENCER...PIEDMONT...CHANDLER...JONES...NICOMA PARK...
DAVENPORT...WELLSTON AND CARNEY.

LAT...LON 3559 9682 3546 9719 3538 9760 3538 9767
      3535 9773 3563 9781 3590 9718 3593 9662
      3586 9662
TIME...MOT...LOC 1518Z 276DEG 35KT 3578 9717 3561 9767 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 6:36 AM CDTSpecial Weather StatementOUNHarper24 min
Aug 18, 7:08 AM CDTSpecial Weather StatementOUNWoods52 min
Aug 18, 7:57 AM CDTSpecial Weather StatementOUNAlfalfa, Major, Woods48 min
Aug 18, 8:12 AM CDTSpecial Weather StatementOUNHarper33 min
Aug 18, 8:25 AM CDTSpecial Weather StatementOUNGarfield, Kay, Major50 min
Aug 18, 8:31 AM CDTSpecial Weather StatementOUNOklahoma29 min
Aug 18, 8:42 AM CDTSpecial Weather StatementOUNOklahoma33 min
Aug 18, 9:16 AM CDTSpecial Weather StatementOUNKingfisher, Logan44 min
Aug 18, 9:36 AM CDTSpecial Weather StatementOUNOklahoma24 min
Aug 18, 9:41 AM CDTSpecial Weather StatementOUNWoods49 min
Aug 18, 9:57 AM CDTSpecial Weather StatementOUNLogan48 min
Aug 18, 10:26 AM CDTSpecial Weather StatementOUNWoodward49 min
Aug 18, 10:45 AM CDTSevere Thunderstorm WarningOUNWoodward32 min
Aug 18, 11:16 AM CDTSpecial Weather StatementOUNBlaine29 min
Aug 18, 11:24 AM CDTSevere Thunderstorm WarningOUNBlaine, Dewey, Kingfisher, Major36 min
Aug 18, 12:21 PM CDTSpecial Weather StatementOUNBlaine, Canadian39 min
Aug 18, 12:52 PM CDTSpecial Weather StatementOUNCaddo, Canadian, Cleveland, Oklahoma53 min
Aug 18, 12:56 PM CDTSpecial Weather StatementOUNGarvin64 min
Aug 18, 2:01 PM CDTSpecial Weather StatementOUNCarter, Jefferson44 min
Aug 18, 2:22 PM CDTSpecial Weather StatementOUNTillman38 min
Aug 18, 2:27 PM CDTSpecial Weather StatementOUNTillman33 min
Aug 18, 2:42 PM CDTSpecial Weather StatementOUNStephens33 min
Aug 18, 2:56 PM CDTSpecial Weather StatementOUNLove49 min
Aug 18, 3:16 PM CDTSpecial Weather StatementOUNStephens29 min
Aug 18, 3:22 PM CDTSpecial Weather StatementOUNCotton23 min
Aug 18, 2:52 PM CDTSpecial Weather StatementOUNFoard38 min
Aug 18, 3:33 PM CDTSpecial Weather StatementOUNBaylor27 min
Aug 18, 3:55 PM CDTSpecial Weather StatementOUNWichita35 min

Nearby

Special Weather Statements in Oklahoma, 2012Every 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.