Weather Service Report


592 
FXUS65 KBOI 121032
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
332 AM MST FRI FEB 12 2016

.SHORT TERM...TODAY THROUGH SATURDAY...SOUTHWEST FLOW ALOFT WILL
RESIDE OVER SE OREGON AND SW IDAHO TODAY AS THE UPPER RIDGE SHIFTS
TO THE EAST. THE INVERSION WILL LAST ANOTHER DAY...ALLOWING FOR
ANOTHER MORNING OF PATCHY VALLEY FOG. THE FOG MAY BE LOCALLY
DENSE. WINDS WILL REMAIN LIGHT THROUGH THIS AFTERNOON...ALTHOUGH
VISIBILITIES ARE STILL EXPECTED TO IMPROVE. TEMPERATURES WILL BE
ON PAR WITH THURSDAY...WITH HIGHS MAINLY IN THE 40S. A WEAK UPPER
TROUGH/COLD FRONT WILL PUSH THROUGH THE AREA TONIGHT THROUGH
SATURDAY MORNING. SHOWERS WILL BE LIMITED TO NORTHERN
AREAS...GENERALLY NORTH OF A BURNS-BOISE-FAIRFIELD LINE. PRECIP
AMOUNTS WILL BE LIGHT WITH SNOW LEVELS LOWERING FROM AROUND 7000
FEET THIS EVENING TO AROUND 5000 FEET SATURDAY MORNING. THE COLD
FRONT WILL BRING ENOUGH WIND AND COOLER TEMPERATURES ALOFT TO
REMOVE THE INVERSION. TEMPERATURES WILL ACTUALLY BE A LITTLE
WARMER IN THE VALLEYS /WHICH DOES HAPPEN ON OCCASION DURING THE
COLD SEASON FOLLOWING STRONG INVERSIONS/ AND COOLER IN THE
MOUNTAINS. THE SHOWERS IN THE NORTH WILL DECREASE DURING THE
AFTERNOON.

.LONG TERM...SATURDAY NIGHT THROUGH FRIDAY...CONTINUED MILD WITH
TEMPERATURES AVERAGING 5 TO 10 DEGREES ABOVE NORMAL. MODEL
AGREEMENT IS ABOVE AVERAGE THROUGH THURSDAY. A WARM FRONT WILL
BRING WIDESPREAD PRECIPITATION ON SUNDAY...WITH SNOW LEVELS RISING
TO ABOVE 7000 FT BY SUNDAY EVENING. A HIGH PRESSURE RIDGE WILL
KEEP MOST OF OUR AREA DRY MONDAY AND TUESDAY...BUT A DEEP LOW
PRESSURE SYSTEM WILL BRING PRECIPITATION TO MOST OF THE WESTERN
U.S. WEDNESDAY AND THURSDAY...WITH SNOW LEVELS LOWERING TO BETWEEN
4000 AND 5000 FEET ACROSS SOUTHEAST OREGON AND SOUTHWEST IDAHO ON
THURSDAY. FORECAST CONFIDENCE DECREASES ON FRIDAY AS MODEL
SOLUTIONS DIVERGE.

&&

.AVIATION...PATCHY IFR/LIFR VALLEY FOG IN THE KMYL AREA AND THE
TREASURE VALLEY WEST OF KBOI SHOULD DISSIPATE BY 18Z. OTHERWISE
CONDITIONS WILL BE VFR THROUGH THIS EVENING WITH SCATTERED TO
BROKEN MID LEVEL AND HIGH CLOUDS. SURFACE WINDS...VARIABLE 10 KTS
OR LESS. WINDS ALOFT...SOUTHWEST 10-20 KTS INCREASING TO 15-25 KTS
THROUGH 10K FT MSL.

WEEKEND OUTLOOK...FRIDAY NIGHT AND SATURDAY MORNING A WEAK LOW
PRESSURE TROUGH CROSSING WASHINGTON AND NORTHERN IDAHO WILL BRING
SCATTERED RAIN AND SNOW SHOWERS AS FAR SOUTH AS KBKE..KMYL..AND
THE CENTRAL IDAHO MOUNTAINS. SATURDAY NIGHT THROUGH SUNDAY A WARM
FRONT WILL BRING MORE WIDESPREAD PRECIPITATION...WITH SCATTERED TO
NUMEROUS RAIN AND SNOW SHOWERS AS FAR SOUTH AS THE NEVADA BORDER
ON SUNDAY.

&&

.AIR STAGNATION...THE INVERSION AND STAGNANT CONDITIONS WILL
CONTINUE TODAY...AND END ON SATURDAY WITH THE ARRIVAL OF A COLD
FRONT.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...BW
LONG TERM....JT
AVIATION.....JT
AIR STAGNATION...BW

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