HAZARDOUS WEATHER OUTLOOK
Issue Date: 503 AM CST TUE DEC 22 2009
Expiration: 500 AM CST WED DEC 23 2009

...STRONG STORM SYSTEM BEGINS TO IMPACT THE REGION TODAY...
THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.
.DAY ONE...TODAY AND TONIGHT.
SEVERE THUNDERSTORM.
RISK...LIMITED.
AREA...SOUTHEAST OF INTERSTATE 44.
ONSET...AFTER 6 PM.
DISCUSSION...
THUNDERSTORMS WILL INCREASE IN COVERAGE THIS EVENING AND
ESPECIALLY LATE TONIGHT...PRIMARILY OVER SOUTHEAST OKLAHOMA
AND WEST CENTRAL ARKANSAS.  A STRONG LOW LEVEL JET WILL
RAPIDLY SPREAD MOISTURE INTO THE REGION ALONG WITH PROVIDING
A SOURCE OF LIFT FOR THUNDERSTORM DEVELOPMENT.  INSTABILITY
WILL ALSO GRADUALLY INCREASE AND A FEW STRONG TO SEVERE
THUNDERSTORMS ARE POSSIBLE...WITH LARGE HAIL BEING THE
PRIMARY SEVERE WEATHER IMPACT.
SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
LOCAL SPOTTER ACTIVATION MAY BE NEEDED LATER TONIGHT.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
WEDNESDAY...SEVERE THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL.
THURSDAY...WINTER WEATHER AND HIGH WIND POTENTIAL.
CHRISTMAS DAY...HIGH WIND AND DANGEROUS WIND CHILL POTENTIAL.
SATURDAY THROUGH MONDAY...NO HAZARDS.
EXTENDED DISCUSSION...
THE FORECAST FOR A STRONG STORM SYSTEM TO IMPACT THE AREA
WEDNESDAY THROUGH FRIDAY CONTINUES. THUNDERSTORMS WILL BE ONGOING
EARLY WEDNESDAY MORNING...BEFORE SHIFTING FURTHER EAST BY
EARLY AFTERNOON.  ADDITIONAL THUNDERSTORMS ARE LIKELY TO FORM
BY WEDNESDAY AFTERNOON AND EVENING...WITH THESE STORMS IMPACTING
ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.  SEVERE WEATHER
POTENTIAL WILL HAVE INCREASE BY THIS TIME AS THE STORM SYSTEM
APPROACHES...WITH BOTH LARGE HAIL AND DAMAGING WINDS POSSIBLE
WITH THE WEDNESDAY EVENING STORMS.  IN ADDITION TO THE SEVERE
WEATHER POTENTIAL...HEAVY RAINFALL ALSO APPEARS LIKELY ESPECIALLY
OVER FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.  THIS ROUND OF
STORMS WILL SHIFT EAST OF THE FORECAST AREA BY LATE WEDNESDAY NIGHT.
THE ATTENTION WILL THEN FOCUS ON THE MUCH COLDER TEMPERATURES
FOLLOWING THE COLD FRONT...AND THE TRANSITION OF ANY LIGHT RAIN
TO LIGHT SNOW DURING THE DAY ON THURSDAY.  CURRENTLY THE MOST LIKELY
AREAS FOR ACCUMULATING SNOWFALL APPEAR NORTH OF HIGHWAY 412.  THE
TRACK OF THE STORM SYSTEM ACROSS THE AREA WILL HAVE A LARGE IMPACT
ON THE SNOWFALL POTENTIAL...AND LATER FORECASTS WILL CONTINUALLY
UPDATE SNOW AMOUNTS AND PLACEMENT.
STRONG NORTHWESTERLY WINDS WILL DEVELOP ON THURSDAY AND PERSIST
INTO SATURDAY AS THE STRONG STORM MOVES SLOWLY NORTHWARD INTO THE
UPPER MIDWEST.  THIS COULD RESULT IN DANGEROUS WIND CHILLS EARLY
CHRISTMAS MORNING.
EMERGENCY MANAGEMENT PLANNING STATEMENT...
SEVERE WEATHER OPERATIONS SHOULD BE ANTICIPATED FOR WEDNESDAY...
AND CONSIDER POSSIBLE TRAVEL IMPACTS FOR THURSDAY.
WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.
$$