Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 291542
AFDBOI

Area Forecast Discussion
National Weather Service Boise ID
942 AM MDT SUN MAY 29 2016

.DISCUSSION...An area of mid and high clouds associated with an
approaching cold front is moving west to east across east-central
and southeast Oregon this morning. This area will move through
southwest Idaho this afternoon and evening. Showers and
thunderstorms are expected to develop along the higher terrain in
the northern portion of the CWA and also in southeast Owyhee
County, and most of Twin Falls and Jerome Counties.

&&

.AVIATION...VFR. Isolated afternoon and evening showers and
thunderstorms north of KMYL with isolated to scattered activity
southeast of KMUO. Surface winds becoming west to northwest
10-15kts after 00Z and continuing through Monday. Winds aloft to
10K feet MSL: southwest 10-15kts early Sunday, becoming northwest
10-20kts by 06Z Monday.

&&

.PREV DISCUSSION...
SHORT TERM...Today through Monday...Temperatures will be warmer
this afternoon ahead of a cold front, with valley highs in the
70s to lower 80s. Moisture ahead of the front will lead to
scattered showers and thunderstorms in Twin Falls County and far
southeastern Owyhee County this afternoon, and along the cold
front across the far north. The showers and thunderstorms will
diminish this evening and end by midnight. It will be a dry cold
front for most SE Oregon and SW Idaho as it moves southeastward
through the area this evening. Winds will be gusty with the front,
but are not expected to be strong. A dry northwest flow aloft will
follow from late tonight through Memorial Day. Temperatures will
average 3-6 degrees cooler along with breezy northwest winds in
the Treasure Valley and Western Magic Valley.

LONG TERM...Monday night through Sunday...Strong upper-level
ridge over the West Coast on Monday night moves slowly inland
through the week. Ridge axis gets east of the forecast on
Thursday, and should see temperatures well above normal for the
end of the week and into next weekend. As ridge axis gets east of
the area, and a cutoff low forms off the California Coast, some
moisture over the Sierras could get drawn northward by late in the
week. Current forecasts include a slight chance of afternoon
mountain thunderstorms for Thursday and beyond due to this
moisture.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...None.
OR...None.

&&

$$

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DISCUSSION...SP
AVIATION.....JS
PREV SHORT TERM...BW
PREV LONG TERM....TB



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