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Area forecast discussion 
National Weather Service Pocatello Idaho
308 am MDT Thursday Oct 8 2015

Discussion...weak middle level disturbance combined with low to middle
level convergence within an area of adequate moisture aiding in
the development of showers across eastern Magic Valley and
portions of the southern Highlands early this morning. This
activity should continue to slide eastward across portions of the
southern snake plain and southern Highlands through the morning
while gradually diminishing.

Meanwhile...a ridge of high pressure will continue to strengthen
over the region during the next couple of days in response to
digging troughs over the British Columbia coast as well as over
the eastern United States. This will allow mainly dry conditions along
with near record highs through Saturday. The trough over British Columbia will
eventually flatten the ridge over the pacnw...allowing a return to
zonal flow by Sunday. In response...a cold front will slide across
the area early Sunday...allowing for temperatures to fall about 10
to 15 degrees compared to Saturday. Winds will become gusty in the
wake of the front...with gusts over 30 miles per hour possible Sunday
afternoon and evening. Little precipitation expected with this
front...with a few showers over the central mountains and upper
snake Highlands. High pressure will then bring a warming trend for
early week before another trough skirts by to the north during the
midweek period...bringing another drop in temperatures...albeit
likely still remaining above normal. Accompanying this trough will
be an increase in wind with showers possible over the high terrain
areas. Ad


Aviation...a shallow upper ridge was positioned over the northwest states
early this morning as a minor disturbance and associated moisture
sheared east-southeast through the northern rockies resulting in broken VFR ceilings across
the area. NE of Hawaii...hurricane oho was lifting NE and is
expected to help amplify the eastern Pacific trough and western states ridge
today/tonight resulting in drier conditions by Friday. Huston


Fire weather...a weak disturbance and associated moisture were
shearing east-southeast across the northern rockies early this morning with drier
conditions expected tonight as the upper ridge over the western states
amplifies in response to hurricane oho lifting north into the NE
Pacific. Record or near record temperatures are anticipated Friday
and Saturday as the ridge remains the dominant feature. The next Pacific
disturbance is expected to top the ridge and push east through the
northern rockies Sunday morning resulting in scattered precipitation
across the Salmon-Challis and targhee nf...and cooler and windy
conditions region-wide. The disturbance races quickly east Sunday
afternoon leaving a flat but mostly dry and breezy west flow in its
wake across southern Idaho through Wednesday. Huston


Pih watches/warnings/advisories...


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