Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 171025

Area Forecast Discussion
National Weather Service Pocatello ID
325 AM MST Wed Jan 17 2018

.SHORT TERM...Today through Fri night. The last dry day before a
series of storms move through the Pacific Northwest and the
northern Rockies. The first one arrives Thu morning, bringing even
milder air into southern Idaho. So, in spite of increased cloud
cover and precipitation, the temperatures will continue either
about the same or even warmer than today`s high temperatures. This
pushes the snow level abnormally high in preparation for the brunt
of storm that hits Thu night. This is a slight slowing from
yesterday`s thinking, and so more precipitation will be arriving
for Fri and Fri night. And now the cold front does not get here
until late Fri night, so there is more rain at higher elevations
than previous expectations. So the cool down from Thu to Fri is
now less than 10 deg F, more like 4 to 7 deg instead. Fri still
expected to be a windy day, and Thu/Thu Night a breezy period.
Will let another forecast cycle take a look at the snow totals
since heavy snow areas are now limited to high elevations in the
central Idaho mountains (Galena Summit area) and the Island Park
corner. Messick

.LONG TERM...Saturday through Wednesday. Expect some lingering
snow mainly in southeast mountains Saturday as first system exits.
For the most part dry however Saturday through most of Sunday.
Next Pacific system begins to affect the central mountains Sunday
afternoon with snow spreading east through all of southeast Idaho
Sunday night into Monday. Could see some widespread accumulations
but not expecting significant amounts. Should be mainly dry Monday
night into Tuesday with another system bringing snow back into
the region Wednesday. High temperatures through the long term
should range from near to slightly above normal. GK


Expect widespread VFR conditions through this evening.   Large system
should bring MVFR and IFR conditions to most TAF sites from Thursday
afternoon through Friday.  Will have windy conditions at most sites
Friday as well behind cold frontal passage.




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