Sunrise 5:38 AM   Sunset 8:34 PM Moonrise 5:17 AM   Moonset 10:19 PM

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PZZ135 Puget Sound And Hood Canal- 208 Pm Pdt Thu May 9 2024
Tonight - N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less. Fri - N wind 5 to 15 kt. Wind waves 2 ft or less. Fri night - N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less. Sat - N wind to 10 kt becoming nw in the afternoon. Wind waves 1 ft or less. Sat night - NW wind to 10 kt. Wind waves 1 ft or less. Sun - SW wind 5 to 15 kt. Wind waves 2 ft or less. Sun night - NW wind 5 to 15 kt becoming S to 10 kt after midnight. Wind waves 2 ft or less. Mon - S wind to 10 kt becoming nw. Wind waves 1 ft or less. Tue - Light wind becoming N to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.

PZZ100 208 Pm Pdt Thu May 9 2024
Synopsis for the northern and central washington coastal and inland waters - High pressure will continue to build off the coast today through the end of the week. Thermally induced low pressure moving up the coast Thursday will shift over the inland waters Friday and east of the cascades Saturday.

FXUS66 KSEW 092120 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 220 PM PDT Thu May 9 2024

SYNOPSIS
An upper level ridge will continue to build over the region today and Friday with warm and clear conditions. The ridge will begin to break down Saturday. A weak upper level trough will move through Sunday night into Monday. Ridging looks to rebuild offshore into the middle of next week with an trough moving south from the Gulf of Alaska towards the region late Tuesday into Wednesday.

SHORT TERM /TONIGHT THROUGH SUNDAY/
Clear skies and temperatures warming into the low 70s early this afternoon as an upper-level ridge and surface thermal trough along the coast dominate the weather pattern for the next few days.

High temperatures today should reach the mid to upper 70s, with a few spots hitting close to 80, including the Southwest Interior and the Cascade valleys. Tonight with clear conditions should allow for efficient cooling and keep low temperatures into the low to mid 50s through the interior, though this will approach record maximum low temperatures across the area. Weak downslope flow over the mountains will keep the valleys and west-side foothills much warmer, in the mid to upper 50s to 60s.

Friday looks to be the warmest day for most, with temperatures reaching into the low 80s, perhaps the mid to upper 80s through the west-side foothills and valleys of the Cascades and Olympics.
Some high clouds may build in through the northern portions of the region. Low temperatures again in the low to mid 50s.

On Saturday the ridge will begin break down as the jet stream begins to move southward. Highs will be much cooler along the Pacific Coast, in the 60s along the immediate shoreline up to the 70s farther inland. Through the interior, highs similar if not a touch warmer, to the upper 70s to low 80s. Low temperatures in the upper 40s to low 50s.

Clouds will begin to increase in coverage Sunday as a weak upper level trough will dig and quickly move through the region late Sunday into Monday. A few light scattered showers may be possible, especially in the higher terrain, but generally expect to remain dry. High temperatures remain slightly above average, in the low to mid 70s, though cooler along the coast in the 60s.

Water temperatures remain cold across the region, with Lake Washington at 53, Lake Sammamish at 56, ocean temperatures in the upper 40s, and river temperatures ranging from the mid 40s to low 50s. Cold water shock can be fatal, even with air temperatures in the 80s. Dress accordingly for cold water and wear a life jacket.

LONG TERM /MONDAY THROUGH THURSDAY/
Models are in good agreement that a ridge will develop again just offshore over the eastern Pacific Ocean with a trough developing over the Gulf of Alaska and moving through British Columbia Wednesday into Thursday.
Models diverge on how far south the cold front from this system will develop and thus determine the chance for some potential rain showers, with the ECWMF 12Z deterministic and ensemble runs most optimistic for widespread rain, while the GFS and CMC 12Z runs show lesser chances for rain and the front much farther north. The current forecast reflects a slight chance of showers and high temperatures a touch below normal, in the upper 60s. Starting Wednesday, NBM shows a large spread in the high temperature forecast with a 15 degree spread between the 25th and 75th percentiles. NBM also shows a large spread in the precipitation forecast.

LH

AVIATION
Northeasterly winds aloft will transition more light tonight into early Friday with an upper ridge over the area. Clear skies this afternoon. Clear skies will continue into Friday with just a few high clouds at times. Brief, patchy fog can't be ruled out, mainly towards Whatcom County and Snohomish and Chehalis River Valleys, but confidence is low. Northerly winds into this evening will taper off tonight, before increasing Friday afternoon.

KSEA...Clear skies expected during the period with a few high clouds. North winds 8 to 14 kts into this evening will lighten to 5 to 8 kts tonight.

JD

MARINE
High pressure will continue over the waters and across the area into the weekend. A thermal trough will exist along the coast for predominately northerly and periods of offshore flow. Winds expected to remain generally below Small Craft Advisory threshold through Friday, although brief wind gusts near 20 kt may occur over Puget Sound and inner Coastal Waters. Northwest winds will increase over the Coastal Waters Saturday. Stronger west winds expected for the Strait of Juan de Fuca Saturday night and then again later Sunday with increasing onshore flow. Otherwise, an onshore flow pattern returns early next week.

Seas will generally range 5 to 7 feet into Saturday, briefly building to 8 to 9 feet for the outer Coastal Waters over the Saturday into Sunday.

JD

HYDROLOGY
The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated as needed.

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...None.

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Arletta
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Thu -- 12:16 AM PDT     6.50 feet Low Tide
Thu -- 05:41 AM PDT     Sunrise
Thu -- 05:48 AM PDT     13.42 feet High Tide
Thu -- 06:17 AM PDT     Moonrise
Thu -- 12:34 PM PDT     -3.10 feet Low Tide
Thu -- 08:26 PM PDT     14.18 feet High Tide
Thu -- 08:33 PM PDT     Sunset
Thu -- 11:19 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION

Arletta, Washington, Tide feet

Hale Passage
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Thu -- 01:31 AM PDT     0.01 knots Slack
Thu -- 02:40 AM PDT     1.06 knots Max Flood
Thu -- 04:01 AM PDT     -0.00 knots Slack
Thu -- 05:41 AM PDT     Sunrise
Thu -- 06:17 AM PDT     Moonrise
Thu -- 09:01 AM PDT     -2.86 knots Max Ebb
Thu -- 01:31 PM PDT     0.00 knots Slack
Thu -- 03:31 PM PDT     2.21 knots Max Flood
Thu -- 06:19 PM PDT     -0.00 knots Slack
Thu -- 08:33 PM PDT     Sunset
Thu -- 10:27 PM PDT     -1.60 knots Max Ebb
Thu -- 11:19 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION

Hale Passage, West end, Washington Current, knots

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