Area Forecast Discussion
Issued by NWS Seattle/Tacoma, WA

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FXUS66 KSEW 251541
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
900 AM PDT SAT JUN 25 2016

.SYNOPSIS...A weak upper ridge over the Pacific Northwest will
bring dry weather today, with morning clouds giving way to
sunshine. Dry weather should continue Sunday through next week,
with light west to southwest flow aloft and onshore low level
flow. Days should be mostly sunny and a little warmer than
normal with highs in the 70s to lower 80s.

&&

.SHORT TERM...A weak upper ridge will move east of the Cascades
today. A weak frontal system that extends southwest from Vancouver
Island will weaken further and move by to our north. The low level
moisture will dry, so mainly cloudy skies this morning should
gradually give way to partly to mostly sunny skies during the
afternoon for the lowlands. There could be just some spotty light
showers over the Cascades this afternoon. Light westerly flow aloft
will continue tonight and Sunday, and an upper ridge will start
building over the Pacific Northwest.

.LONG TERM...Models agree that light west or southwest flow aloft
will prevail Tuesday through Friday, with weak to moderate onshore
flow at the surface. This should be a period of fair weather, with
highs generally in the 70s to lower 80s and lows in the 50s to
lower 60s.

&&

.AVIATION...The air mass is moist and stable but drying will occur
with clouds scattering most areas in the afternoon or early evening.

KSEA...Clouds will lift and breakup this afternoon. A light north
wind should develop this afternoon.

&&

.MARINE...There is high pressure offshore and lower pressure inland.
Small craft advisory west winds are likely each evening in the
Central and Eastern Strait of Juan De Fuca. There will also be small
craft advisory northwest winds at times for the Coastal waters,
mainly late afternoons and evenings.

&&

.SEW Watches/Warnings/Advisories...
WA...None.
PZ...Small Craft Advisory from 2 PM this afternoon to 3 AM PDT Sunday
     for Central and East Entrance U.S. Waters Strait Of Juan De Fuca.

     Small Craft Advisory from 5 PM this afternoon to midnight PDT
     tonight for Coastal Waters from James Island to Cape Shoalwater
     and out 10nm.

&&

$$

www.weather.gov/seattle

You can see an illustrated version of this discussion at
www.weather.gov/seattle/gafd/latest_webafd.html



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