244 
FXUS65 KBOI 252145
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
245 PM MST Sun Feb 25 2018

.SHORT TERM...Tonight through Tuesday...Snowfall, heaviest over
the mountains, continues this afternoon. Light snowfall remains
present over the valleys, with light accumulations noted. Periods
of heavier snow possible along the foothills. The trough producing
this snowfall will see its axis approaching eastern Oregon early
Monday morning. As this axis moves through, showers will work to
taper off with a building northerly flow behind the trough.
Instability along the axis in the afternoon may generate a few
showers Monday afternoon, but any accumulation should be limited.
Drier conditions expected on Tuesday with warming temperatures 
over the mountains, though overall temperatures remain 10 to 15 
degrees below normal. A few showers may form over Baker County on 
Tuesday afternoon, though confidence in this development is low. 

.LONG TERM...Tuesday night through Sunday...Tuesday night and 
Wednesday precipitation will be mainly confined to the mountains of 
eastern Oregon and central Idaho. The next upper level low pressure 
trough will deepen as it moves out of Alaska and south along the 
coast. Ahead of this system, snow will spread across our area 
Wednesday night and continue on Friday as the low pressure center 
moves inland over the northwest states and western Canada. Scattered 
snow showers will continue through Sunday. Temperatures will average 
5 to 10 degrees below normal. 

&&

.AVIATION...Widespread snow through tonight with mountains obscured 
and areas of IFR/local LIFR conditions in snow. Conditions improving 
from the northwest starting late tonight following a cold front, 
with snow ending in the valleys by 26/18z. Surface winds southeast 
to southwest 10-20 kts except 15-25 kts over the higher terrain, 
shifting to west 10-20 kts after 26/12z. Winds aloft at 10k ft MSL 
west 30-40 kts.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...Winter Storm Warning until 5 AM MST Monday IDZ011-013-033.
     Winter Weather Advisory until 5 AM MST Monday IDZ014>016-028>030.
OR...Winter Weather Advisory until 5 AM MST /4 AM PST/ Monday 
     ORZ061-063.
     Winter Weather Advisory until 10 PM PST this evening ORZ062.

&&

$$

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SHORT TERM...KB
LONG TERM....JT
AVIATION.....JT