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Area forecast discussion 
National Weather Service Pocatello Idaho
218 PM MST Thursday Nov 27 2014

Short term...tonight through Sunday. As the upper ridge over the
west flattens into more zonal flow...Pacific moisture is beginning to
stream into Idaho. As the moisture flow increases...precipitation will
become more wedespread over the central mountains on Friday due to upslope
enhancement. Precipitation will also spread to the upper snake Highlands
on Friday...but most will be squeezed out over the central mountains Friday
night... a northern stream upper trough will rotate southward out of
British Columbia. This will cause the polar front to sag southearn into Idaho. This
feature will enhance precipitation and spread it over the rest of the
forecast area by Sat morning. Temperatures will remain mild ahead of the
front...resulting in relatively high snow levels. Valley locations
will see rain until the front passes Sat night. The frontal
passage will clear out much of the precipitation from north to S late Sat
night. By sun...most precipitation will be confined to the southern and
eastern Highlands. Snowfall amounts of 5 to 10 inches expected in
the central mountains above 7000 feet...with lesser accumulations below.
Below 5000 feet should see mostly rain. The upper snake Highlands should
see 3 to 6 inches...and the eastern Highlands 2 to 4 inches. Windy
conditions at high elevations may result in blowing and drifting
snow in the central mountains temperatures will remain mild through Saturday...
falling on Sunday in the wake of the cold front. Hedges

Long term...Sunday night through Thursday. The GFS and European model (ecmwf) models
are in good agreement early in the period. Expect light to moderate
moisture moving into the area from our south on Monday and early
Tuesday. From here...the models have a different timing and
intensity on the next system. The GFS model shows ample moisture
with good precipitation chances moving into the area on Wednesday
with relatively drier conditions on Thursday. The European model (ecmwf) model shows
dry conditions on Wednesday with weak precipitation chances on
Thursday. Wyatt


Aviation...expect middle and upper level clouds and breezy south
southwest winds ahead of a Pacific storm system moving through the
area this weekend. Wyatt


Pih watches/warnings/advisories...
Winter Weather Advisory from 6 PM Friday to 6 am MST Sunday
above 7000 feet for the idz018-031.



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