Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 240820
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
220 AM MDT Wed May 24 2017

.SHORT TERM...Today through Friday night.
An upper level system and associated cold front will move into
southeast Idaho and expect winds to increase this afternoon with
wind advisories in the Eastern Magic Valley and Snake River Plain
in effect today from noon through 9 pm. May see some blowing dust
reducing visibility along interstate 15 mainly north of Idaho
Falls. Expect mainly dry conditions with the front with the best
chance of showers and thunderstorms in the southern highlands near
the Utah and Wyoming borders. A second upper level system will
drop south from Canada Thursday and expect most shower and
thunderstorm activity in the central mountains and Upper Snake
Highlands. The convective activity will continue Friday and expect
more widespread coverage across all of southeast Idaho. After very
warm conditions today expect a significant drop in temperatures
Thursday into Friday with below normal readings expected.
GK

.LONG TERM...Saturday through Wednesday. Models in good agreement
with the pattern over the west being ridge dominant thru the
extended period. This means above normal temps and generally dry
conditions. Both GFS and ECMWF show some moisture being pulled into
the ridge...leading to isolated tstms during the aftn/eve hours each
day over the central mtns and upper Snake Highlands. Other than
that...the extended period looks pretty quiet. Hedges

&&

.AVIATION...An upper low and cold front will sweep thru eastern ID
this aftn bringing strong southwest winds to mainly the Snake
River Plain. VFR skies are expected...but some vis reductions are
possible due to blowing dust. This would be most likely at
KBYI...KPIH...and KIDA. Winds will settle down somewhat this eve.
Hedges

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Wind Advisory from noon today to 9 PM MDT this evening for
IDZ017-020-021.

&&

$$



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