HAZARDOUS WEATHER OUTLOOK
Issue Date: 1205 PM CST TUE DEC 22 2009
Expiration: 500 AM CST WED DEC 23 2009

Expires:200912231100;;
FLUS44 KOUN 221802
HWOOUN
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1145 AM CST TUE DEC 22 2009
OKZ004>048-050>052-TXZ083>090-231100-
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-
1145 AM CST TUE DEC 22 2009
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...THROUGH TONIGHT...
THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE POSSIBLE IN SOUTHEAST OKLAHOMA...MAINLY OVERNIGHT.
SEVERE THUNDERSTORMS ARE NOT EXPECTED.
DISCUSSION...
SURFACE LOW PRESSURE WILL INTENSIFY IN WEST TEXAS AND SOUTH WINDS
WILL PULL GULF MOISTURE NORTHWARD INTO SOUTHERN AND EASTERN OKLAHOMA
THROUGH TONIGHT. A STRENGTHENING LOW LEVEL JET MAY AID IN THE
DEVELOPMENT OF A FEW THUNDERSTORMS IN SOUTHEAST OKLAHOMA WHERE LOW
LEVEL MOISTURE WILL BE THE DEEPEST. HOWEVER...INSTABILITY WILL
REMAIN LIMITED AND SEVERE THUNDERSTORMS ARE NOT EXPECTED.
PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY DEC 23.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...50 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...
THUNDERSTORM OUTLOOK...
STRONG THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF CENTRAL AND
SOUTHEAST OKLAHOMA WEDNESDAY. MOISTURE AND INSTABILITY WILL CONTINUE
TO INCREASE AS SOUTHERLY WINDS PREVAIL TO THE EAST OF A COLD FRONT
ACROSS NORTHWEST OKLAHOMA. WIND SHEAR WILL ALSO INCREASE AS THE
UPPER LEVEL STORM SYSTEM NEARS THE AREA. THE INCREASING INSTABILITY
AND SHEAR WILL BE FAVORABLE FOR A FEW SEVERE THUNDERSTORMS OVER
PARTS OF SOUTHEAST OKLAHOMA. THE MAIN THREAT WILL BE LARGE HAIL.
OTHER HAZARDOUS WEATHER...
A WINTER STORM WILL AFFECT THE SOUTHERN PLAINS FROM LATE TUESDAY
THROUGH AT LEAST THURSDAY. RAIN COULD CHANGE TO SNOW WEDNESDAY NIGHT
INTO THURSDAY... RESULTING IN HAZARDOUS TRAVEL CONDITIONS. SOME SNOW
ACCUMULATIONS WILL BE POSSIBLE...MAINLY OVER NORTHERN OKLAHOMA.
HOWEVER...ALL AREAS WILL BE IMPACTED BY THE COMBINATION OF COLD
TEMPERATURES AND STRONG NORTHERLY WINDS... WHICH WILL RESULT IN LOW
WIND CHILL VALUES. IN AREAS THAT DO SEE SNOW ACCUMULATIONS...THE
STRONG WINDS WILL LIKELY RESULT IN AREAS OF BLOWING SNOW AND LOWER
VISIBILITY.
AS THE STORM EXITS... A LARGE MASS OF ARCTIC AIR WILL OVERSPREAD THE
SOUTHERN PLAINS. THE COLD AIRMASS COMBINED WITH STRONG WINDS WILL
RESULT IN DANGEROUSLY LOW WIND CHILL TEMPERATURES BOTH THURSDAY AND
FRIDAY.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
WEDNESDAY.
$$