Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 190853

Area Forecast Discussion
National Weather Service Boise ID
253 AM MDT Fri Oct 19 2018

.SHORT TERM...Today through Saturday...The much-referenced
approaching upper level ridge finally moves into and through the
CWA today through Saturday. This will bring a continuation of
warmer temperatures, clear skies, and light winds. Patchy fog is
possible again tomorrow morning near Baker City. Changes to the
forecast were minimal.

.LONG TERM...Saturday night through Thursday...A pattern change
during the coming week will bring an increasing chance of showers
and slightly cooler temperatures. The upper level high pressure
ridge will remain over the northern Intermountain Region Sunday
and Monday, then drift east of the Rockies starting Tuesday. A
weak upper level low pressure trough over California and the Great
Basin could circulate enough moisture northward for showers in
southern Twin Falls County and the Magic Valley as soon as Sunday
night, and over the central Idaho mountains by Tuesday night.
Models agree that increasing westerly flow over the northwest
states will spread showers across most of our area Wednesday night
and Thursday, with a continuing chance of showers through Friday.
Temperatures will remain above normal through the period, with a
gradual cooling trend starting Wednesday.


.AVIATION...VFR. Mostly clear with areas of smoke reducing
visibilities. Expect patchy fog in the Baker Valley until about
16z. Surface winds variable 10 kts or less. Winds aloft at 10k
feet MSL N- NE 5-10kt.





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