Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 262031

Area Forecast Discussion
National Weather Service Boise ID
231 PM MDT Fri May 26 2017

.SHORT TERM...Tonight through Sunday...Upper low moving east of
Idaho this evening. A few showers and thunderstorms on the far
western edge of that low will bring showers and thunderstorms to
Idaho areas, mainly east of Boise through the early evening.
These should diminish rapidly by sunset. Forecast area left in
weak northerly flow on Saturday, which should be drier and near
normal temperatures. By Sunday a ridge pushes in from the west
for even more warming, taking temperatures about 10 degrees above
normal. Could be a few cloud buildups over the mountains both
Saturday and Sunday, but seems doubtful that any of them would
intensify enough to bring precip, even to the highest peaks.

.LONG TERM...Monday through Friday. Upper level ridge axis is
expected to be straight overhead Monday and into Tuesday.  This will
keep conditions dry and temperatures well above normal. The GFS and
ECMWF have come into a bit better agreement of a trough moving on
shore late Tuesday and splitting the energy northward and southward
on Wednesday.  The will leave little impacts for the CWA, as a
slight chance of showers in the mountains may be the worst of it.
And even still, the ECMWF is notably drier than the GFS.
Temperatures are expected to moderate during this time but may
remain above normal.

.AVIATION...Mostly VFR with scattered MVFR showers in, and possibly
a thunderstorm, across central and southern Idaho, ending rapidly
with sunset. Surface winds: Generally 10 kts or less, with some
gusts to 25 kts near stronger showers/thunderstorms. Winds aloft
near 10 kft msl: North/Northwest 10-15 kts.

Weekend Outlook...VFR with mostly clear skies and light winds both
Saturday and Sunday.




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