Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 280917

Area Forecast Discussion
National Weather Service Boise ID
317 AM MDT Wed Jun 28 2017

.SHORT TERM...Today through Thursday...Isolated showers and
thunderstorms associated with an upper trough will continue
mainly in SW Idaho this morning. The showers and thunderstorms
will end by midday, except in eastern fringes of the forecast
area, which includes central ID east of McCall and Idaho City,
and along the ID/NV border. Drier air will arrive with the passage
of a cold front, except the isolated showers and thunderstorms
may continue in the West Central Mountains east of McCall this
evening. The upper trough will pass by to our northeast tonight
and will be followed by a dry N-NW flow aloft on Thursday. Gusty
northwest winds will develop this afternoon, with gusts up to 30
mph in the Upper Treasure Valley east of Boise. The winds will
diminish after sunset with lighter winds expected through
Thursday. Temperatures will be near normal through the period.

.LONG TERM...Thursday night through Wednesday...Upper level ridge
builds in over the region on Friday though it weakens as a weak
shortwave across the Pacific Northwest Saturday. Brief ridging on
Sunday gives way to Southwesterly flow as another upper level
trough sets up over Western Canada Monday through Wednesday. There
is a slight chance of afternoon showers/thunderstorms Saturday
night with the trough passage from the Wallowa Mountains east
through the West Central Mountains. Temperatures will remain a 2-5
degrees above normal through the July 4th holiday.


.AVIATION...VFR. Mostly clear. Isolated thunderstorms will
continue through this evening mainly north of a KBNO-KBOI-KJER
line. Surface winds northwest 10-20 kts. Gusts to 30 kts possible
in the Snake River Plain this afternoon. Winds aloft at 10k feet
msl west 10-20 kts.





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