Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 292054

Area Forecast Discussion
National Weather Service Boise ID
254 PM MDT Sat Apr 29 2017

.SHORT TERM...Tonight through Monday...Upper ridge will shift
east tonight followed by a northwest flow aloft. A weak front will
bring a chance of showers across the far north and slight chance
of showers elsewhere from late tonight through Sunday. West-
northwest winds of 10-20 mph with gusts to 30 mph will develop
with the frontal passage Sunday afternoon. The showers and winds
will diminish Sunday evening as the frontal system pushes east.
Northwest flow aloft will remain over the area through Monday.
There will be enough moisture in the flow for some clouds, but no
precip. Winds will be lighter, except east of Boise where the
breezy northwest winds will continue on Monday. Low temps tonight
will not be as cool as last night, with little change in high
temps Sunday and Monday.

.LONG TERM...Monday night through Saturday...Weak shortwave moves
through the region Tuesday morning bringing a slight chance of
showers to the higher terrain. An upper level ridge moves over the
region Wednesday and Thursday for warm and dry conditions.
Temperatures will warm to the low 80s Thursday. The upper level
ridge breaks down on Friday as an upper level trough and cold
front move across the region. Models have been inconsistent with
the timing. However, they are in good agreement with the upper
level trough remaining over the Western U.S. through the weekend
for colder temperatures and chances for showers.


.AVIATION...VFR with clouds increasing from the northwest this
evening. Scattered showers beginning Sunday morning. Surface
winds: generally west/northwest 12 kts or less. Winds aloft near
10 KFT MSL northwest 10-15 kts.





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