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000 
FXUS66 KSEW 162236
AFDSEW

Area Forecast Discussion
National Weather Service Seattle WA
236 PM PST Sat Nov 16 2019

.SYNOPSIS...A frontal system will move through the area tonight and
Sunday. Another system will arrive Monday afternoon and night. An
upper ridge will keep weather systems away from the area Wednesday
through Saturday.

&&

.SHORT TERM /TONIGHT THROUGH TUESDAY/...A frontal system moving
into British Columbia will continue to brush the area tonight--
most of the heavier rain is well north of the area. What remains
of the front will finally reach Western Washington on Sunday--a
rainy and breezy day. Sunday night will see showery weather in the
post-frontal onshore flow. Another frontal system will reach the
area Monday afternoon and evening--this system is better
organized, but still not all that impressive for the middle of
November. That round of rain will turn over to post-frontal
decreasing showers on Tuesday.

.LONG TERM /WEDNESDAY THROUGH SATURDAY/...An upper ridge will keep
weather systems away from Western Washington. Skies will be mostly
clear. Patchy fog will probably form in the late night and morning
hours in the usual spots. Outlying areas will have frosty low
temps.

&&

.AVIATION...A warm front will bring rain mostly to the Olympic 
Peninsula and northern Cascades tonight, along with gusty south 
winds. The flow aloft is westerly. Rain will increase in coverage 
Sunday morning as the cold front shifts S/SE through the region - 
MVFR cigs are likely. 33

KSEA...Light rain possible in the vicinity this afternoon. Clouds
lowering and rain increasing Sunday morning. Gusty S winds 10 to 
20 kt expected by 12z. 33

&&

.MARINE...A strong frontal system will bring Small Craft Advisory
winds to most of the waters tonight, along with gale force winds
to the northern coastal waters. Seas will remain within a 9 to 11
ft range. This system will slowly weaken as it shifts through the
region on Sunday. A third system will arrive early next week.
Offshore flow will prevail over the latter half of the week. 33

&&

.HYDROLOGY...A mild frontal system will drag through the area
tonight and Sunday. Another system will arrive Monday afternoon
and evening. Rivers will rise but flooding is not forecast. Dry 
weather is expected from the middle of the week through next
weekend.

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Small Craft Advisory until 7 AM PST Sunday 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 for rough bar until 4 PM PST Sunday for 
     Grays Harbor Bar.

     Small Craft Advisory from 10 PM this evening to 7 AM PST Sunday 
     for Coastal Waters From Cape Flattery To James Island 10 To 
     60 Nm-Coastal Waters From Cape Flattery To James Island Out 
     10 Nm.

     Gale Warning until 10 PM PST this evening for Coastal Waters 
     From Cape Flattery To James Island 10 To 60 Nm-Coastal 
     Waters From Cape Flattery To James Island Out 10 Nm.

     Small Craft Advisory until 4 PM PST Sunday for Admiralty Inlet-
     East Entrance U.S. Waters Strait Of Juan De Fuca-Northern 
     Inland Waters Including The San Juan Islands-Puget Sound 
     and Hood Canal.

     Small Craft Advisory until 10 AM PST Sunday for West Entrance 
     U.S. Waters Strait Of Juan De Fuca.

&&

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