Area Forecast Discussion
Issued by NWS Boise, ID

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000
FXUS65 KBOI 271045
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
345 AM MST THU NOV 27 2014

.SHORT TERM...TODAY THROUGH FRIDAY...ALOFT...A WEAKENING RIDGE
AXIS IS PASSING OVER THE AREA AT THIS TIME. THIS WILL ALLOW SW
FLOW ALOFT TO BEGIN TO BRING INCREASING MOISTURE TO THE REGION IN
THE SHORT TERM. AFTER A VERY WARM WED...THANKSGIVING WILL NOT BE
QUITE AS MILD...ALTHOUGH TEMPS WILL STILL BE AROUND 10 DEGREES
ABOVE NORMAL BOTH TODAY AND TOMORROW. TODAY...RAIN AND SNOW WILL
BE MAINLY CONFINED TO HIGHER ELEVATIONS IN THE NORTHERN HALF OF
THE CWA...MORE OR LESS NORTH OF A LINE FROM BURNS TO BOISE TO
FAIRFIELD. SNOW LEVEL RANGES FROM AROUND 8000 FEET IN THE SOUTH TO
6500 FEET IN THE NORTH TODAY...AND WILL COME DOWN TO A RANGE OF
FROM AROUND 7500 FEET IN THE SOUTH TO AROUND 5000 FEET IN THE
NORTH TOMORROW. TOMORROW...THE AREA OF PRECIPITATION WILL BE MUCH
LIKE TODAY...BUT THE LINE WILL CREEP SOUTH IN SE OREGON LATE
TONIGHT AND TOMORROW. WINDS WILL INCREASE FRIDAY AFTERNOON...
ESPECIALLY OVER THE HIGHER ELEVATIONS IN SE OREGON.

.LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY...MOIST SOUTHWESTERLY
FLOW AHEAD OF A VIGOROUS TROUGH DIVING SOUTH THROUGH BRITISH
COLUMBIA WILL BRING SIGNIFICANT PRECIPITATION TO THE MOUNTAINS
AHEAD OF AN ARCTIC COLD FRONT THROUGH SATURDAY. SIGNIFICANT SNOW
ACCUMULATION CAN BE EXPECTED ABOVE 6000 FEET WITH THIS SYSTEM
ESPECIALLY IN THE WEST CENTRAL AND BOISE MOUNTAINS. THE TIMING OF
THE ARCTIC COLD FRONT WILL BE SOMETIME SATURDAY NIGHT INTO SUNDAY
MORNING. FORECAST CONFIDENCE BEYOND MONDAY IS VERY LOW AS THE
MODELS DIFFER IN THE HANDLING OF THE CUTOFF LOW WEST OF CALIFORNIA
IN THE EXTENDED.

&&

.AVIATION...VFR UNDER BKN-OVC MID CLOUD DECKS. MOUNTAINS NORTH OF A
KBKE-KSUN LINE BECOMING OBSCURED AFTER 18Z THU WITH TERRAIN-INDUCED
PRECIPITATION. SNOW LEVELS AROUND 6500FT NEAR KMYL AND 8500FT NEAR
NEVADA BORDER. SURFACE WINDS 12KT OR LESS EXCEPT IN SOUTHEAST
OREGON SW 15-25KT. WINDS ALOFT NEAR 10K FEET MSL...WSW 35-50KT.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...NONE.
OR...NONE.

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...SP
LONG TERM....KA
AVIATION.....KA



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