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Area forecast discussion
National Weather Service Boise Idaho
314 PM MST Fri Dec 2 2016

Short term...tonight through Monday morning...mild temperatures and
partly cloudy skies will give way to increasing clouds from the
northwest to southeast. Expecting light precipitation in the
higher elevations generally north of a Burns-Ontario-Stanley line
through Saturday. By Sunday morning, a more potent and moist
system will move into the region from the northwest. This system
will bring significant snow totals to the west central and Boise
Mountains. A Winter Storm Watch has been issued for these areas.
Other areas and the valleys are expected to receive generally less
than one inch, with the Treasure valley potentially seeing a few
snowflakes Monday morning behind the passing cold front. The cold
front will enter southeast Oregon late Sunday afternoon and exit
southwest Idaho Monday morning. Temperatures will hover just above
normals ahead of this system through Sunday, dropping significantly
behind the frontal passage.

Long term...Sunday night through Friday...the unsettled pattern
continues through the extended period. Sunday night and into Monday
morning a disturbance pushes through the area. The majority of the
precipitation is forecast to occur up in the Boise Mountains and
west central mountains. Snow levels will drop to valley floors by
Monday afternoon as this disturbance passes through. Another
disturbance starts to make its way down into the County Warning Area Monday night
into Tuesday. Much more widespread precipitation with this
disturbance in the form of snow for all areas within the County Warning Area. Snow
totals in the valley will range from a half an inch to just below an
inch. With temperatures expected to remain at or below freezing
these accumulations could persist for a few days. By early Wednesday
morning this disturbance pushes out of the area as an upper level
ridge begins to build in from the west. Models are showing the next
disturbance lingering offshore Wednesday night. This next
disturbance makes its way into the County Warning Area by Friday with widespread
precipitation forecast. Precipitation will begin as snow for lower
elevations below 3000ft then switch over to rain by Friday afternoon
with snow at elevations above 3500ft. &&

Aviation...mostly VFR. Lingering stratus east of
kmuo and north of kjer that continues to dissipate, however once the
sun sets this is expected to reform in the same areas as was seen
Friday morning, the upper Treasure valley, western Magic Valley, and
southern Twin Falls County. Mid-upper level cloud cover pushing in
late Friday evening. Surface winds, light and variable.
Winds aloft to 10k feet msl, northeasterly 15-35kt.

Weekend outlook...chance of snow showers pushing in early Saturday
for Baker County, upper Weiser river, and the west central
mountains. Showers taper off by late Saturday, but return once more
by early Sunday morning and began to increase in coverage. By late
Sunday they spread down to the Nevada border. Surface winds mostly
light and variable through Sunday afternoon then becoming
southwesterly-westerly 10-20kt. Winds aloft to 10k feet msl,
northwesterly 25-35kt through Sunday morning then westerly 25-45kt.


Boi watches/warnings/advisories...




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