Area Forecast Discussion
Issued by NWS Seattle/Tacoma, WA

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000
FXUS66 KSEW 262123
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
230 PM PDT SUN JUN 26 2016

.SYNOPSIS...An upper ridge will bring sunny warm weather again on
Monday. Isolated thunderstorms are possible over the mountains
Monday afternoon and evening. Marine clouds will increase on the
coast Monday night and there will be areas of morning clouds on
Tuesday. Mostly sunny days are expected Wednesday through Friday
with some clouds at times on the coast. The weather will probably
be cooler and cloudier next weekend.

&&

.SHORT TERM...Fair weather is expected for most of Western Washington.
A weak shortwave could help touch off a thunderstorm or two over the
mountains Monday afternoon and evening. Marine stratus will deepen on
the coast Monday night. Temps will warm on Monday in the interior with
lower to mid 80s in the warm spots, but for Tuesday through Thursday
75 to 80 is more likely for the warm spots with mid 60s to mid 70s
elsewhere--coolest on the coast. Dry weather and pretty average temps.

.LONG TERM...Upper heights are likely to fall into the weekend and
at the least marine layer clouds should deepen and become more
persistent. The forecast was pushed in that direction. The weather
could end up with night and morning clouds, patchy drizzle, and then
some sunshine for the afternoon and evening hours.

&&

.AVIATION...An upper ridge will move over Eastern Washington tonight
with southwest flow aloft over Western Washington. At the surface,
onshore flow will prevail with high pressure offshore and lower
pressure inland. The air mass is dry and stable. Areas of stratus
will develop along the coast overnight. Otherwise, skies will be
clear.

KSEA...Clear. Northerly wind 7-14 knots this evening diminishing to
4 to 9 knots overnight. 13

&&

.MARINE...Onshore flow will prevail for the next five days with high
pressure offshore and lower pressure inland. There will be small
craft advisory west winds in the Central and Eastern Strait most
evenings. Onshore gradients will gradually increase Monday and
Tuesday and gales are likely by Tuesday evening. There will also be
small craft advisory northwest winds for the coastal waters at times
the next several days. 13

&&

.SEW Watches/Warnings/Advisories...
WA...None.
PZ...Small Craft Advisory from 3 PM this afternoon to 2 AM PDT Monday
     for Coastal Waters From James Island To Point Grenville 10
     To 60 Nm-Coastal Waters From James Island To Point
     Grenville Out 10 Nm-Coastal Waters From Point Grenville To
     Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point
     Grenville To Cape Shoalwater Out 10 Nm.

     Small Craft Advisory from 5 PM this afternoon to 2 AM PDT Monday
     for Coastal Waters From Cape Flattery To James Island 10 To
     60 Nm.

     Small Craft Advisory from 5 PM this afternoon to 1 AM PDT Monday
     for Central U.S. Waters Strait Of Juan De Fuca-East
     Entrance U.S. Waters Strait Of Juan De Fuca.

&&

$$

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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