Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 280808
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
208 AM MDT SAT MAY 28 2016

.DISCUSSION...Upper low is currently situated along coastal BC
with a weak shortwave to our east, and another just pushing into
Vancouver Island. Broad area of subsidence across Idaho today will
result in mostly clear skies and few, if any, showers. Best
chances will be along the MT border up around Island Park this
afternoon. The second shortwave will begin to make its way into
the area on Sunday, and may help trigger afternoon/evening
showers/thunderstorms.

Upper ridging will become the dominant feature over the West
early next week and should result in dry and warm conditions as we
head into next weekend. ECMWF is now much weaker with the strength
of the upper ridge. Previous runs showed a 592 high at 500mb over
the PAC NW. Most guidance are showing temps rising into the 80s
after mid-week. Hinsberger

&&

.AVIATION...A few showers linger along the divide this morning. Flat
flow aloft in place today for breezy conditions in the Snake Plain
and higher elevations. Stable air mass in place today most areas.
Exception is area along the divide. Gusty outflow winds remain main
threat in this region. The remainder of the region will remain VFR
through tonight. DMH

&&

.FIRE WEATHER...Flat flow aloft today with mainly stable air mass
over most of the region. A few showers and thunderstorms will be
possible along the divide. Gusty outflow winds will be the main
threat. Otherwise dry and breezy conditions can be expected today.
Another shortwave feature shifts through the PacNW states Sunday
into Monday. Convection is expected to redevelop Sunday afternoon
and last overnight mainly higher elevation areas. Monday should be
another breezy to windy day behind the shortwave axis. For Tuesday
through Friday, a ridge of high pressure will build into the region.
Look for temperatures to warm significantly by the end of the week.
DMH

&&

.PIH Watches/Warnings/Advisories...
None.
&&

$$



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