HAZARDOUS WEATHER OUTLOOK
Issue Date: 507 AM CST THU DEC 24 2009
Expiration: 500 AM CST FRI DEC 25 2009
...DANGEROUS WINTER STORM TO IMPACT THE REGION TODAY AND TONIGHT...
THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.
.DAY ONE...TODAY AND TONIGHT.
FLASH FLOOD.
RISK...LIMITED.
AREA...FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
ONSET...ONGOING.
THUNDERSTORMS WITH DANGEROUS LIGHTNING.
RISK...LIMITED.
AREA...FAR SOUTHEAST OKLAHOMA.
ONSET...ONGOING...ENDING BY MID AFTERNOON.
WINTER WEATHER.
SNOW ACCUMULATION.
RISK...SIGNIFICANT.
AREA...ALL EASTERN OKLAHOMA AND NORTHWEST ARKANSAS...
WITH HIGHEST ACCUMULATIONS NORTHEAST OKLAHOMA
AND FAR NORTHWEST ARKANSAS.
ONSET...LATE MORNING WEST...EARLY EVENING EAST.
SIGNIFICANT WINDS.
RISK...ELEVATED.
AREA...ALL EASTERN OKLAHOMA AND PORTIONS OF NORTHWEST ARKANSAS.
ONSET...ONGOING...INCREASING THROUGHOUT THE DAY.
DISCUSSION...
WIDESPREAD RAIN AND ISOLATED THUNDERSTORMS WILL CONTINUE THROUGH
THE MORNING HOURS...AS PRECIPITATION EXPANDS AHEAD OF AN INTENSE
STORM SYSTEM CURRENTLY CENTERED OVER WEST TEXAS. TEMPERATURES
WILL STEADILY FALL THROUGHOUT THE DAY...WITH SUB-FREEZING
TEMPERATURES EXPANDING EASTWARD. RAIN SHOWERS WILL CHANGE TO
SLEET...AND THEN TO SNOW BY LATE MORNING FOR AREAS WEST OF HIGHWAY
75. THIS CHANGE TO FROZEN PRECIPITATION WILL ALSO SPREAD
EASTWARD DURING THE DAY...WITH SLEET AND SNOW LIKELY ACROSS
NORTHWEST ARKANSAS BY LATE AFTERNOON OR EARLY EVENING.
ONE OR MORE BANDS OF HEAVY SNOW ARE EXPECTED TODAY INTO
TONIGHT. THE CURRENT FORECAST PLACES THE HIGHEST AMOUNTS ACROSS
FAR NORTHEAST OKLAHOMA INTO FAR NORTHWEST ARKANSAS. WHILE
THE EXACT LOCATION OF THE HEAVIEST SNOW BAND MAY CHANGE...THERE
IS HIGH CONFIDENCE THAT SIGNIFICANT SNOWFALL WILL IMPACT A LARGE
PORTION OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS BY LATE
TONIGHT. ADDITIONALLY...STRONG NORTHWESTERLY WINDS OF 20 TO 40 MPH
WILL PREVAIL FOR MUCH OF TODAY AND TONIGHT. THE COMBINATION
OF HEAVY SNOW AND STRONG WINDS WILL CREATE NEAR BLIZZARD CONDITIONS
ACROSS PORTIONS OF THE AREA.
TRAVEL CONDITIONS WILL DETERIORATE THROUGHOUT THE DAY...AND BECOME
DANGEROUS BY TONIGHT. POWER OUTAGES ARE POSSIBLE AND VERY COLD
WIND CHILLS VALUES WILL MAKE ANY OUTDOOR EXPOSURE HAZARDOUS.
SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION IS REQUESTED ONCE PRECIPITATION CHANGES TO
SLEET OR SNOW...ALONG WITH FREQUENT SNOW ACCUMULATION AMOUNTS.
PLEASE RELAY THESE REPORTS TO THE NATIONAL WEATHER SERVICE IN TULSA.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...HIGH WIND POTENTIAL.
SATURDAY THROUGH MONDAY...NO HAZARDS.
TUESDAY AND WEDNESDAY...WINTER WEATHER POTENTIAL.
EXTENDED DISCUSSION...
STRONG NORTHWESTERLY WINDS WILL CONTINUE ON FRIDAY ALONG WITH A
FEW FLURRIES POSSIBLE NEAR THE KANSAS OKLAHOMA BORDER. WIND CHILL
VALUES WILL REMAIN VERY LOW AND OUTDOOR EXPOSURE SHOULD BE LIMITED
ON FRIDAY. COLD AND DRY WEATHER WILL PREVAIL SATURDAY THROUGH
MONDAY...WITH THE NEXT CHANCE OF SNOW ARRIVING BY TUESDAY.
WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.
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