Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 180851

Area Forecast Discussion
National Weather Service Pocatello ID
251 AM MDT Sun Jun 18 2017

.SHORT TERM...Today through Wednesday. Upper ridging will push
temps up and humidity down...with Tue expected to be the warmest
day. The upper ridge flattens to more zonal flow on Tue...allowing
for some moisture to move in. Isold to widely scattered aftn/eve
tstms can be expected in the mtns on Tue...with the best chances
near the Divide. Limited moisture availability will result in
little rainfall from tstms. The moisture pushes east by Wed...with
only isold tstms possible over the southeast highlands. Temps will
be a few degrees cooler on Wed.

.LONG TERM...Thursday through Sunday. Ridge building over the
eastern Pac forces stronger northwest flow thru the weekend. This
will keep temps moderated. NW flow is normally a dry pattern...but
models showing a back door upper trof dropping southward thru the
northern Rockies on Fri. This brings a slight chance for tstms Fri
aftn/eve near the Divide. The rest of the fcst area remains dry.


.AVIATION...VFR scattered mid-layer clouds expected today. Some breezy winds
expected this afternoon with gusts around 20 mph. No thunderstorm or
visibility concerns today. NP/Hedges


.FIRE WEATHER... drying trend is expected this week. Some valley
locations will reach critical dryness in Central Idaho, including
Challis Monday afternoon. This trend will only spread to South
Central Idaho Tuesday and persist in Central Idaho. Eastern Idaho
zones are remaining in the 30 percent or so min RH range. Tuesday
afternoon has the potential to bring scattered thunderstorms to
Central Idaho.  Winds will start out westerly today for South
Central Idaho zones and shift more southwesterly at 15 to 20 mph.
Central Idaho will start out breezy from the northwest this morning
with decreasing speeds today. Fairly calm and varying wind speeds
are expected across Eastern Idaho zones. Winds are expected to be
less than 15 mph across all zones for Monday. NP/Hedges



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