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PZZ135 Puget Sound And Hood Canal- 246 Am Pst Sun Dec 3 2023
.small craft advisory in effect from 1 pm pst this afternoon through late tonight...
Today..SE wind 5 to 15 kt becoming S 15 to 25 kt in the afternoon. Wind waves 2 ft or less building to 2 to 4 ft in the afternoon. Rain.
Tonight..S wind 15 to 25 kt easing to 5 to 15 kt after midnight. Wind waves 2 to 4 ft subsiding to 2 ft or less after midnight. Rain in the evening then rain likely after midnight.
Mon..SE wind 5 to 15 kt becoming S 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. Rain.
Mon night..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Tue..S wind 15 to 25 kt easing to 5 to 15 kt in the afternoon. Wind waves 2 to 4 ft subsiding to 2 ft or less in the afternoon.
Tue night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Wed..SW wind to 10 kt. Wind waves 1 ft or less.
Thu..S wind 5 to 15 kt. Wind waves 2 ft or less.

PZZ100 246 Am Pst Sun Dec 3 2023
Synopsis for the northern and central washington coastal and inland waters..A quick moving frontal system will move through the waters today. A warm front will move through Monday followed by a cold front Tuesday.

FXUS66 KSEW 031123 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 323 AM PST Sun Dec 3 2023

SYNOPSIS
A series of weather systems will impact the region over the next week. Rising snow levels and periods of heavy precipitation Monday and Tuesday will lead to an increased risk of river flooding across Western Washington. An upper level trough will cross the region late in the week for a shift toward showery precipitation, cooler temperatures, and lowering snow levels.

SHORT TERM /TODAY THROUGH TUESDAY/
A relatively fast moving frontal system will deliver another quick shot of precipitation to the region later this morning into this afternoon. In addition to the precipitation, snow levels will begin to creep upwards...reaching to 6000 to 7000 feet across the central Cascades by midday. A cold front will sweep eastward across the region by late afternoon...bringing another lull in the precipitation tonight and temporarily knocking snow levels back to around 4000 to 5000 feet. But the lull will be brief.

Moderate to heavy precipitation will spread back northward across Western Washington on Monday morning as a warm front lifts northward toward the area. As the warm front lifts northward across the region, this will send snow levels skyrocketing to 8000 to 9000 feet across most of the area. Breezy to locally windy conditions will also develop as the warm front lifts across the region. As the trailing cold front stalls offshore into Tuesday, a 130 knot jet stream will direct an atmospheric river into the region. The sustained moisture feed will result in 36 hour precip totals between 12Z Monday and 00Z Wednesday of 8 to 11 inches in the Olympics, 6 to 9 inches across the north/central Cascades, 3 to 5 inches along the coast, and 1.5 to 3 inches for the remainder of the lowlands. This will lead to sharp river rises and potential river flooding discussed in the hydrology section below.

LONG TERM /WEDNESDAY THROUGH SATURDAY/
A cold front will sag southward across the area by Wednesday with the axis of heavier precipitation shifting into Oregon. Precipitation is expected to turn more showery for the second half of the week as an upper trough shifts onshore. This will send snow levels back down to most pass levels. Weak upper ridging could lead to a drying trend toward the end of the week, but a significant spread in ensemble cluster plots leaves little confidence in the overall forecast picture by the weekend.

27

AVIATION
Frontal system moving through the area today.
Northwesterly flow aloft becoming westerly behind the front late this afternoon into tonight. Next system moving inland south of the area tonight lifting north over Western Washington Monday.

Ceilings near 6000 feet lowering to around 3500 feet with the onset of rain 12z-15z. Ceilings continuing to lower down to 1500 to 2500 feet in rain with local visibility 3-5sm in moderate rain 18z-20z. Ceilings improving behind the front back up to 4000-6000 feet 00z-03z tonight.

KSEA...Ceilings lowering to around 6000 feet around 12z and to 3500 feet in rain around 14z. Ceilings continuing to lower to around 2000 feet with visibility 3-5sm in rain by 19z. Ceilings lifting back up to 4000 to 6000 feet 00z-03z. Southeast wind 4 to 8 knots becoming southerly 10 to 15 knots around 18z. Winds easing overnight. Felton

MARINE
A quick moving frontal system will move through the waters today. A warm front will move through Monday followed by a cold front Tuesday.

Small craft advisories up for all of the waters today into tonight. Gales at the East Entrance to the Strait of Juan de Fuca Monday into Monday night and over the coastal waters Monday night with small craft advisories continuing over most of the remainder of the waters. Winds easing Tuesday.

Seas around 10 feet building to 13 to 16 feet Monday and to as high as 19 feet Tuesday night. Seas begin subsiding Wednesday dropping back down under 10 feet later Thursday. Felton

HYDROLOGY
Frontal system moving through the area today could push the Skokomish River near flood stage by tonight. The remainder of the rivers will remain below flood stage. The big event begins Monday morning and lasts into Tuesday. Rainfall amounts of 8 to 11 inches in the Olympics, 6 to 9 inches in the Cascades, 4 to 6 inches along the coast and 2 to 4 inches for the interior are possible between Monday and Tuesday. Snow levels will be on the rise starting out around 3500 feet today and ending up near 9000 feet by Monday night. A Flood Watch remains in effect for the area through late Wednesday night.

The combination of heavy precipitation and rising snow levels will most likely result in river flooding on many rivers across western Washington. The Skokomish will be the first one to flood stage possibly as early as tonight. Other rivers currently look to reach flood stage Monday night or Tuesday. Moderate flooding is possible on some of the bigger rivers like the Snoqualmie, Snohomish and Skagit as well as the lower reaches of the Chehalis.
While flooding looks likely across the region, there remains a degree of uncertainty in the scope and extent due to timing of the snow to rain switchover in the high elevations and uncertainty in the locations of the heaviest bands of precipitation. It will be important to stay up to date on the latest forecast developments.

In addition to the river flooding, burn scars in the Cascades will have to be monitored with the heavy precipitation forecast. Elevated risks of landslide and debris flows will also be possible especially later Monday through at least Tuesday. 14/Felton



SEW WATCHES/WARNINGS/ADVISORIES
WA...Flood Watch through late Wednesday night for Admiralty Inlet Area-Bellevue and Vicinity-Bremerton and Vicinity-Central Coast-East Puget Sound Lowlands-Eastern Strait of Juan de Fuca-Everett and Vicinity-Hood Canal Area-Lower Chehalis Valley Area-North Coast-Olympics-San Juan County-Seattle and Vicinity-Southwest Interior-Tacoma Area-West Slopes North Cascades and Passes-West Slopes North Central Cascades and Passes-West Slopes South Central Cascades and Passes-Western Skagit County-Western Strait of Juan De Fuca- Western Whatcom County.

PZ...Small Craft Advisory until 10 AM PST Monday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm-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-Grays Harbor Bar-West Entrance U.S.
Waters Strait Of Juan De Fuca.

Small Craft Advisory until 6 PM PST this evening for Admiralty Inlet-Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory from 10 AM this morning to 5 PM PST this afternoon for Puget Sound and Hood Canal.

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Des Moines
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Sun -- 02:24 AM PST     0.38 feet Low Tide
Sun -- 07:38 AM PST     Sunrise
Sun -- 10:15 AM PST     12.24 feet High Tide
Sun -- 12:36 PM PST     Moonset
Sun -- 04:19 PM PST     Sunset
Sun -- 04:28 PM PST     7.08 feet Low Tide
Sun -- 08:07 PM PST     8.13 feet High Tide
Sun -- 10:31 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Des Moines, Washington, Tide feet

Restoration Point
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Sun -- 03:15 AM PST     0.00 knots Slack
Sun -- 05:58 AM PST     0.63 knots Max Flood
Sun -- 07:39 AM PST     Sunrise
Sun -- 10:06 AM PST     -0.00 knots Slack
Sun -- 12:37 PM PST     Moonset
Sun -- 01:27 PM PST     -0.55 knots Max Ebb
Sun -- 04:19 PM PST     Sunset
Sun -- 06:51 PM PST     -0.06 knots Min Ebb
Sun -- 10:31 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

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

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