FXUS65 KBOI 272039

Area Forecast Discussion
National Weather Service Boise ID
239 PM MDT Thu Apr 27 2017

.SHORT TERM...Tonight through Saturday...Scattered showers (with
snow levels around 4500 feet) developed over the higher terrain
this afternoon, with little to no activity in the Treasure/Western
Magic Valleys. The showers will diminish in most areas after
sunset. The showers will persist in the SW Idaho mountains through
Friday as an upper trough lingers over the Intermountain West.
Dry weather returns late Friday night through Saturday as an upper
ridge builds into Oregon and SW Idaho. Winds will remain gusty,
reaching or exceeding advisory levels east of Boise, until around
sunset. The gusty winds return on Friday with the greatest winds
expected in the Upper Treasure Valley, where winds will approach
but not attain Wind Advisory levels. Lighter winds are expected
with the building ridge on Saturday. Temperatures will trend
warmer through the period - to near normal in SE Oregon and
slightly below normal in SW Idaho on Saturday.

.LONG TERM...Saturday night through Thursday...An upper level
ridge builds over the region beginning Sunday and remain in place
through Thursday. Except for two fast moving shortwaves bringing a
chance of showers to the region Sunday afternoon and Tuesday
morning, the region will see drier and warmer conditions, with
temperatures around normal. The ridge reaches peak amplitude on
Thursday with temperatures reaching the mid to upper 70s in the
lower valleys.


.AVIATION...VFR under mid-to-high level ceilings. Scattered rain
showers will continue through sunset tonight. Snow levels around
4500 feet for snow showers in the mountains. Surface winds: west
to northwest 15-25 kts, except 25-35 kts with gusts to 45 kts from
KMUO south and east through the Western Magic Valley through this
evening. Winds will diminish across the region around sunset.
Winds aloft near 10k ft MSL: northwest 20-35 kts.

Weekend Outlook...Showers continuing on Friday mainly for the
higher terrain. Saturday will be drier with mostly clear skies
followed by more showers on Sunday afternoon.


ID...Wind Advisory until 9 PM MDT this evening IDZ014-016-030.




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