Area Forecast Discussion
Issued by NWS Seattle/Tacoma, WA

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FXUS66 KSEW 151553
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
855 AM PDT Mon Oct 15 2018

.SYNOPSIS...Dry weather will continue for the next week with high
pressure aloft and low level offshore flow.

&&

.SHORT TERM...A strong upper ridge just offshore will move over
Western Washington today and Tuesday and then flatten and weaken a
bit on Wednesday as a system passes to the north. Low level
offshore will continue although it will weaken and turn somewhat
flat on Wednesday as the upper ridge weakens. The upshot is sunny
days with patchy morning fog in the usual valley locations. Highs
will be in the 60s with a few spots creeping into the lower 70s.
Lows will be mostly in the 40s.

.LONG TERM...An upper ridge will strengthen over the area
Thursday and Friday then shift slightly inland next weekend for
continued dry weather. Highs will cool a few degrees but it will
remain mostly in the 60s which is slightly above normal.

&&

.AVIATION...An upper level ridge offshore will move over western
Washington today and tonight with northerly flow aloft. At the
surface, offshore flow will continue. Dry and stable air will
preclude the formation of fog at TAF sites with some patchy fog in
the usual river valley locations again Tuesday morning.

KSEA...Clear skies outside of a few high clouds. Northerly wind 5
to 10 kts.


&&

.MARINE...High pressure remains in control over the region with
offshore winds at the surface for the next couple of days.
Marginal small craft advisory winds possible across the west
entrance to the Strait and adjacent coastal waters tonight into
Tuesday morning so small craft advisory remains in effect. Winds
will relax during the day Tuesday. By late Wednesday into
Thursday, flow will transition to weak onshore as high pressure
weakens. Lighter winds expected. CEO

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory from 11 PM this evening to 8 AM PDT Tuesday
     for Coastal Waters From Cape Flattery To James Island Out
     10 Nm-West Entrance U.S. Waters Strait Of Juan De Fuca.

&&

$$

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