Sunrise 5:09 AM   Sunset 9:10 PM Moonrise 12:39 PM   Moonset 12:35 AM

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PZZ135 Puget Sound And Hood Canal- 845 Pm Pdt Thu Jun 13 2024
Tonight - N wind 10 to 15 kt, becoming E 5 to 10 kt late this evening, veering to S after midnight. Waves around 2 ft or less. Fri - S wind 5 to 10 kt, becoming sw 10 to 15 kt in the afternoon. Waves around 2 ft or less. A chance of showers in the afternoon. Fri night - W wind 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves around 2 ft or less. A chance of showers in the evening, then showers after midnight. Sat - SW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less. Showers in the morning, then showers with a chance of tstms in the afternoon. Sat night - W wind 5 to 10 kt, becoming S after midnight. Waves around 2 ft or less. A chance of showers in the evening. Sun - SW wind around 5 kt, veering to nw around 5 kt in the afternoon. Waves around 2 ft or less. A chance of showers. Sun night - N wind around 5 kt. Waves around 2 ft or less. Mon - SW wind around 5 kt. Waves around 2 ft or less. Mon night - S wind around 5 kt. Waves around 2 ft or less. Tue - S wind around 5 kt. Waves around 2 ft or less. Tue night - W wind around 5 kt. Waves around 2 ft or less.
winds and waves higher in and near tstms.

PZZ100 845 Pm Pdt Thu Jun 13 2024
Synopsis for the northern and central washington coastal and inland waters - Weak surface ridging over the coastal and inland waters will weaken tonight ahead of a weak frontal boundary that will move into the coastal waters on Friday. Broad troughing will remain over the waters on Saturday. A weak surface ridge rebuilds on Sunday. Heading into early next week, surface ridging offshore and lower pressure inland is expected to produce varying degrees of onshore flow.

FXUS66 KSEW 140350 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 850 PM PDT Thu Jun 13 2024

UPDATE
Evening forecast on track with increasing southwesterly flow aloft ahead of approaching upper level trough. Evening 00Z sounding from KUIL shows moisture remaining AOB 700 mb this evening and still mostly very dry in the lowest levels. Expecting temps to cool well into the 40s again in many areas for another comfortably cool mid-June night.

SYNOPSIS
Ridging will slide east with troughing developing offshore into Friday. A weak front will move through on Friday.
Troughing overhead over the weekend will bring unsettled weather, including potential thunderstorms. Troughing will then slide east into the middle of next week.



SHORT TERM /TONIGHT THROUGH MONDAY/
Dry weather this afternoon with high clouds overhead as southwesterly flow increases aloft.
Ridging over the area will continue to slide east tonight and Friday with troughing developing offshore. Clouds will increase later tonight into Friday morning, with a weakening front bringing light rain on Friday. Temperatures will be a few degrees cooler on Friday with highs in the upper 50s to mid 60s.

An upper low will slide over the Pacific Northwest on Saturday, with reinforcing troughing on Sunday. This will lead to continued unsettled weather and cooler temperatures over the weekend. Given the colder air aloft, precipitation on Saturday and Sunday will become more convective in nature. Instability will increase Saturday afternoon, with forecast sfc CAPE currently ranging 200 to 400 J/kg on NBM, sufficient for isolated thunderstorms.
Probabilities range 20 to 35% across Western Washington for t-storms Saturday, with highest probabilities across central Puget Sound, due to likely convergence activity during the afternoon and evening hours. The main threats for any storms that do form will be lightning, heavy rainfall, gusty winds, and small hail. Coverage in showers dissipates a bit on Sunday, with the highest likelihood for thunderstorms mainly south of I-90 and over the Olympics (probabilities less than 20%). Otherwise, locally breezy onshore winds over southern Puget Sound expected on Saturday. Temperatures over the weekend will be cooler in the mid 50s to low 60s.

LONG TERM /TUESDAY THROUGH FRIDAY/
Troughing will continue to deepen over the Pacific Northwest on Monday, with ensembles generally consistent on the location of troughing being interior Pacific Northwest. Continued shower potential will exist Monday and Tuesday as the trough moves slowly eastward, with the highest chance of precipitation over the Cascades. Uncertainty increases in ensembles Wednesday and Thursday, with ECMWF showing a bit more of a ridging influence, and continued weak troughing shown on GFS ensembles. Given this pattern, have continued with NBM guidance suggesting perhaps drier conditions at times, with precipitation potential mostly confined to the Cascades. Otherwise, a slow warming trend is likely Monday through Thursday, although the degree of warming continues to be uncertain given the fluctuation in guidance during this period. JD



AVIATION
An approaching upper level trough of low pressure will bring increasing southwesterly flow aloft over Western Washington overnight. While low level onshore flow will also strengthen, VFR conditions are expected to prevail with the moisture remaining at higher levels. A weak front will approach the area Friday, with some MVFR cigs along the coast but elsewhere it should remain primarily VFR with mid to high level cloudiness.
Shower activity will increase after 18Z Fri.

KSEA...VFR conditions. S/SW winds AOB 10kts will persist. Increasing mid to high level clouds tonight ahead of an incoming upper level low pressure system. Increasing shower activity in the 18Z Fri - 00Z Sat timeframe but largely remaining in VFR conditions.

Johnson

MARINE
A weak ridge of surface high pressure over the NE Pacific will gradually weaken through late Friday as a weak frontal boundary pushes into the area. Gale conditions in a strong onshore in the overnight hours in the central/eastern strait will be isolated as winds diminish early Friday morning. Aside from a chance of thunderstorms Saturday, marine conditions will be rather quiet for the next few days. Weak surface ridging rebuilds on Sunday ahead of another trough that is expected to pass well south of area waters.
Heading into early next week, surface ridging offshore and lower pressure inland is expected to produce varying degrees of onshore flow.

27/Johnson



SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Gale Warning until 1 AM PDT Friday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 1 AM PDT Friday for Admiralty Inlet.

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Duwamish Waterway
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Fri -- 12:00 AM PDT     10.87 feet High Tide
Fri -- 01:35 AM PDT     Moonset
Fri -- 05:11 AM PDT     Sunrise
Fri -- 06:59 AM PDT     4.21 feet Low Tide
Fri -- 11:52 AM PDT     6.72 feet High Tide
Fri -- 01:39 PM PDT     Moonrise
Fri -- 05:38 PM PDT     3.32 feet Low Tide
Fri -- 09:08 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Duwamish Waterway, Washington, Tide feet

Restoration Point
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Fri -- 01:36 AM PDT     Moonset
Fri -- 03:36 AM PDT     -0.70 knots Max Ebb
Fri -- 05:11 AM PDT     Sunrise
Fri -- 08:25 AM PDT     0.00 knots Slack
Fri -- 09:16 AM PDT     0.10 knots Max Flood
Fri -- 11:27 AM PDT     -0.00 knots Slack
Fri -- 01:39 PM PDT     Moonrise
Fri -- 03:11 PM PDT     -0.42 knots Max Ebb
Fri -- 06:30 PM PDT     0.00 knots Slack
Fri -- 08:54 PM PDT     0.40 knots Max Flood
Fri -- 09:09 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Restoration Point, 0.6 miles ESE of, Washington Current, knots

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