Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 271946

Area Forecast Discussion
National Weather Service Pocatello ID
146 PM MDT Wed May 27 2020

.SHORT TERM...Tonight through Friday night.
Main feature in the short term will be continuing rising
temperatures with high temperatures Friday rising to around 20
degrees above normal. Should have dry conditions for the most part
with only some isolated thunderstorms in the Upper Snake Highlands
Friday afternoon and evening. Many low elevations will reach the
90s on Friday. Overall very little impacts in the short term
period. Wind impacts are not expected.

.LONG TERM...Saturday through Wednesday.
High pressure will still be in control of the local weather to
start the weekend with temperatures remaining well above seasonal
norms under mostly clear skies. Expecting widespread 90s on
Saturday with even some mid 90s possible in the lower Snake Plain
and across the Magic Valley. Ridge begins to break down on Sunday
as an upper low moves into northern California and eventually into
the Pacific NW. This will allow temps to drop by 7-12 degrees
compared on Sunday but still well above normal. As the low moves
into British Columbia, ridge amplifies a bit more so temps warm
back up a few degrees on Monday generally in the mid 80s across
the lower terrain. Beyond this, model agreement breaks down
significantly with GFS trying to establish troughing across the
Great Basin while the ECMWF allows the ridge to build back in for
a few more days. This disagreement is leading to huge
discrepancies in regards to precip chances and temps so for now
ran with the NBM guidance until greater agreement exists.

Expect VFR conditions through the period as high pressure is in
control of the weather across eastern Idaho. Only a few high clouds
expected with light winds, generally 10 knots or less. Winds become
lighter and more variable during the overnight hours. McKaughan





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