HAZARDOUS WEATHER OUTLOOK
Issue Date: 507 AM CST SAT DEC 19 2009
Expiration: 1200 PM CST SAT DEC 19 2009
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TODAY AND TONIGHT...
THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED THROUGH TONIGHT.
DISCUSSION...
PERSISTENT NORTHERLY WINDS WILL KEEP DRY AND STABLE AIR FLOWING
THROUGH THE REGION THROUGH TONIGHT.
PROBABILITY TABLE...
VALID THROUGH 700 AM CST SUNDAY DEC 20.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...ZERO PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...
THUNDERSTORM OUTLOOK...
AN UPPER LEVEL TROUGH WILL STRENGTHEN OVER THE PLAINS BETWEEN LATE
TUESDAY AND EARLY THURSDAY. DURING THAT PERIOD...LIFT MAY BECOME
STRONG ENOUGH TO PRODUCE ISOLATED THUNDERSTORMS. THE MOST LIKELY
AREA FOR THUNDERSTORMS WILL BE EAST OF INTERSTATE 35 IN OKLAHOMA.
OTHER HAZARDOUS WEATHER...
IN RESPONSE TO THE UPPER LEVEL TROUGH ARRIVING AT MID WEEK...ARCTIC
HIGH PRESSURE WILL MOVE INTO THE NORTHERN ROCKIES...WHILE A SURFACE
LOW STRENGTHENS OVER THE PLAINS. BEGINNING EITHER LATE TUESDAY...OR
ON WEDNESDAY...COLD AIR WILL RUSH INTO OKLAHOMA AND WESTERN NORTH
TEXAS. BLUSTERY NORTH WINDS COULD YIELD VERY LOW WIND CHILL
TEMPERATURES...LASTING INTO THURSDAY OR FRIDAY.
IT IS ALSO LIKELY THAT PART OF THE REGION WILL EXPERIENCE ICE AND
SNOW. THE STORM IS COMING TOGETHER SUCH THAT ICE AND SNOW MAY
ACCUMULATE AND CAUSE SIGNIFICANT IMPACTS. WHETHER THIS WILL OCCUR...
AND HOW LARGE AN AREA WILL BE AFFECTED...IS NOT CURRENTLY KNOWN. THE
FORECAST WILL BECOME MORE DETAILED AS CONFIDENCE INCREASES GOING
INTO THE UPCOMING WEEK. AT A MINIMUM...PEOPLE SHOULD PREPARE FOR
COLD WEATHER AND POSSIBLE IMPACTS TO TRAVEL BETWEEN LATE TUESDAY AND
THURSDAY.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT NOON
TODAY.
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