Marine Weather and Tide Forecast for Port Townsend, WA

SYNOPSIS
Upper level troughing will remain the dominant influence across western Washington through much of the week as an upper level low spins across the northeastern Pacific. This system will push a few weak fronts into the area Tuesday and Wednesday, bringing chances of showers to western Washington.
More notable chances of precipitation are expected Friday into the weekend as the upper low pushes inland over the region.

SHORT TERM /TODAY THROUGH WEDNESDAY/
Upper level troughing will continue to influence the region through the first half of the week as an upper level low spins across the northeastern Pacific.

An upper level shortwave will move across the region today, while a weak front approaches at the surface, breaking up as it gets closer to the coast. Overall, expect today to be a mostly dry day across western Washington. Onshore flow will continue in the low levels, with increased cloud cover expected this morning as the shortwave makes its way across the area. Clouds will make way for some sunshine this afternoon and afternoon high temperatures will be in the upper 60s to low 70s across the interior. Highs along the coast will be in the low 60s.

The next frontal system will approach the region on Tuesday, bringing chances of showers mainly to the coast. Overall rainfall amounts look to be light, with most coastal areas only expected to see a couple hundredths of an inch of rain. Afternoon highs will be similar to Monday's, with temperatures topping out in the upper 60s to mid 70s across the interior and low 60s along the coast.

The frontal system will then push inland Tuesday night into Wednesday, bringing chances of showers and cloudy skies to the interior. The bulk of the moisture with this system remains focused on the Olympic Peninsula and across the North Cascades, where up to a quarter of an inch of rain is possible. Most lowland locations will see lighter amounts of a few hundredths of an inch. High temperatures on Wednesday will be a few degrees cooler, with most spots likely only climbing into the 60s, though a few may make it into the low 70s.


LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/
A few post- frontal showers may linger into Thursday, but expect Thursday to be a drier day across western Washington as a whole. The most notable precipitation of the week is likely Friday into Saturday as the upper level low across the northeastern Pacific sinks southward and moves inland over the area Friday night into Saturday. Rainfall amounts across the lowlands at this time generally look to range between a tenth of an inch to a quarter of an inch. This cool system will bring snow levels down to 5000-6000 ft over the weekend and looks to bring light snow accumulations to the tallest mountain peaks. Those with plans for outdoor recreation in the mountains will want to make sure to stay tuned to the forecast over the coming days. High temperatures over the weekend will generally trend below normal as a result, with highs only expected to be in the 60s. 14

AVIATION
High clouds continue to move across most of Western Washington this morning. Low clouds at the coast bringing down ceilings to MVFR, with improvement expected by 19Z today. VFR for all terminals into the afternoon and evening hours. MVFR stratus will form again on the coast tonight, with the potential to drop down to IFR. The low stratus will move inland early Tuesday morning and possibly get as far east as South Puget Sound by 12Z Tuesday morning.

KSEA...High clouds at times today. Southwesterly surface flow around 5-8 kt. Winds will attempt to become northwesterly in the 21Z-0Z timeframe, but most likely will end up in the 250-280 degree range at 4 to 8 kt. Winds going back to southwest after 05Z Tuesday.
Felton/29

MARINE
Surface high pressure over the coastal waters will weaken tonight and Tuesday. A weak front will move through the waters Tuesday night into Wednesday morning. High pressure will rebuild Wednesday night and Thursday. Another system will move through the coastal waters Friday.

Westerly push through the Strait of Juan de Fuca tonight with small craft advisory westerly winds in the Central and Eastern Strait easing after midnight. Small craft advisory westerlies possible again in the Central and Eastern Strait each evening Wednesday through Friday. Felton

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Small Craft Advisory from 6 PM this evening to 2 AM PDT Tuesday for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca.