Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 252057

Area Forecast Discussion
National Weather Service Boise ID
257 PM MDT WED MAY 25 2016

.SHORT TERM...Tonight through Friday...Showers and thunderstorms
were scattered mainly across the mountains of southwest Idaho and
also the Southwest Highlands as of 245 PM MDT. These were
generally moving south or southeast, and the strongest storms were
over central Owyhee County. A large upper level trough axis is
centered overhead this afternoon, and as this feature moves east
overnight, it will take most of the convection with it. Tomorrow,
we will be left with showers and a slight chance of thunderstorms
mainly in our Idaho zones while the Oregon side dries out.
However...another trough will approach from the northwest late
Thursday and move into the area Friday. This will push a cold
front through the region Thursday night into early Friday. The
front will be mainly dry, with a chance of showers confined to the
West-Central and Boise mountains. Northwest winds will increase
Friday behind the front and gusts will range from 10-20 kts over
most of the area, up to 20-30 kts in the Upper Treasure and
Western Magic Valleys. Temperatures will warm a few degrees to
near normal tomorrow, and then cool back down 5 to 10 degrees
behind the cold front Friday.

.LONG TERM...Friday night through Wednesday...Upper level trough
still sits over the area which will keep a chance of showers for
the West Central Mountains through Sunday morning. The upper level
trough starts to push further east by Sunday afternoon, but
another shortwave passes through the area Sunday night into Monday
increasing the chances of precipitation for higher elevations in
Eastern Oregon and Western Idaho. The instability is not very
impressive this day so removed the chances of any convection from
the forecast. Monday afternoon, high pressure begins to push in
from the coast drying things out. This trend continues through the
end of the period. Temperatures start to climb to normal by Monday
and continue this trend becoming almost 10 degrees above normal by


.AVIATION...VFR. Isolated showers and thunderstorms, mostly near
the Idaho/Nevada border as well as higher elevations of Eastern
Oregon and Western Idaho, through late afternoon. BKN-OVC cloud
cover, 9K- 11K feet MSL in and around shower activity. Surface
winds mostly northwest 10-20kts. Winds aloft to 10K feet MSL,
northerly 10-15kts.





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