Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 230828

Area Forecast Discussion
National Weather Service Pocatello ID
228 AM MDT Tue May 23 2017

.SHORT TERM...Today through Thursday night.
An upper level ridge will move overhead today and provide another
warm and sunny day throughout southeast Idaho. Temperatures will
be well above average for late May with valley highs approaching
80 degrees or slightly above. Conditions will begin to change
dramatically Wednesday as a strong cold front pushes thorugh the
region. It will remain very warm but expect a significant increase
in winds especially in the Snake River Plain where 20 to 30 mph
sustained winds are expected. A wind advisory may be needed but
for now will hold off. Best chance for showers Wednesday will be
in the southern highlands. Expect much colder temperatures
Thursday with highs dropping about 15 degrees or so from Wednesday
with an upper trof over the region. Best chance for precipitation
will be in the central mountains and Upper Snake River Highlands
with wind speeds expected to be much less than Wednesday.

.LONG TERM...Friday through Tuesday. Models in general agreement Fri
with a backdoor upper trof moving thru the northern Rockies...
setting off sct showers/tstms into the eve. The upper trof moves off
to the east on Sat...but still close enough to result in isold tstms
over the mtns and upper Snake Plain Sat aftn/eve. For the rest of
the extended period...upper ridging will be the dominant pattern.
This will result in dry and warmer conditions. Isold tstms possible
over the mtns on Tue. Hedges


.AVIATION...Upper ridging will result in VFR conditions thru
tonight. An upper low dropping in on Wed is expected to result in
windy conditions Wed aftn/eve. Hedges



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