Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 011042
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
342 AM MST SUN FEB 1 2015

.SHORT TERM...TODAY THROUGH MONDAY...BY MONDAY AFTERNOON EXPECT
VALLEY RAIN /SOME AREAS RAIN SHADOWED/ AND MOUNTAIN SNOW. A WEAK
DISTURBANCE WILL BRING NORTHERN ZONES A THREAT OF RAIN OR SNOW
TODAY AND ANOTHER BIT STRONGER SYSTEM CROSSES SE OREGON THIS
EVENING AND WEAKENS AS IT CROSSES SW IDAHO TONIGHT...DUE TO THE
LONG WAVE WESTERN U.S. RIDGE. TEMPERATURES WILL BE ABOVE NORMAL
BUT MOUNTAINS WILL COOL OFF FROM RECENT WELL ABOVE NORMAL TEMPS.
SNOW LEVELS GENERALLY 3500 TO 4500 NORTH AND 5500-6500 SOUTH.

.LONG TERM...MONDAY NIGHT THROUGH SUNDAY...WET CONDITIONS MONDAY
NIGHT THROUGH WEDNESDAY MORNING AS WESTERLY FLOW ALOFT PUMPS
MOISTURE INLAND. SNOW LEVELS WILL RANGE FROM 4500 FT TO 6500 FT
MSL FOR PERIODS OF BOTH RAIN AND SNOW ACROSS ELEVATED VALLEYS.
DRIER OVERALL ON THURSDAY...AS A PACIFIC RIDGE SHIFTS INLAND OVER
OREGON/IDAHO. HOWEVER...UPPER LEVEL PATTERN WILL REMAIN
PROGRESSIVE AS THE UPPER RIDGE SHIFTS QUICKLY EASTWARD AND MOIST
SOUTHWESTERLY FLOW /ON THE BACK SIDE OF THE RIDGE/ BRINGS MORE
PRECIPITATION BEGINNING LATE FRIDAY. WARM AIR ADVECTION WILL BE
NOTABLE...ALLOWING SNOW LEVELS TO RISE TO 6000 TO 7500 FT MSL.
EXPECT MILD TEMPERATURES AND RAIN /EVEN ACROSS HIGHER TERRAIN/
FRIDAY NIGHT THROUGH EARLY SUNDAY.

&&

.AVIATION...VFR THROUGH 20Z WITH INCREASING AND LOWERING CLOUDS
THROUGH THE MORNING. AFTER 20Z...WIDESPREAD MVFR-IFR CONDITIONS IN
VALLEY RAIN AND MOUNTAIN SNOW. SNOW LEVELS GENERALLY 4500-5500 FT
MSL NEAR THE NEVADA BORDER...LOWERING TO 3000-4000 FT MSL NEAR KBKE
AND KMYL. SE TO SW SURFACE WINDS GENERALLY 15 KTS OR LESS. WESTERLY
WINDS ALOFT WILL AVERAGE 20 KTS THROUGH 10K FT MSL.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...VM
LONG TERM....MT
AVIATION.....MT


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