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Marine Weather and Tide Forecast for Bryn Mawr-Skyway, WA

December 7, 2024 6:17 AM PST (14:17 UTC) Change Location
Sunrise 7:41 AM   Sunset 4:19 PM
Moonrise 12:27 PM   Moonset 11:18 PM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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PZZ135 Puget Sound And Hood Canal- 246 Am Pst Sat Dec 7 2024

Today - SW wind 10 to 15 kt rising to 15 to 20 kt this afternoon. Waves around 2 ft or less. Rain, mainly this morning.

Tonight - S wind 10 to 20 kt. Waves 2 or 3 ft. Rain.

Sun - S wind 5 to 10 kt, becoming se in the afternoon. Waves around 2 ft or less. Rain.

Sun night - SE wind around 5 kt. Waves around 2 ft or less. Patchy fog after midnight.

Mon - N wind around 5 kt. Waves around 2 ft or less.

Mon night - N wind around 5 kt. Waves around 2 ft or less.

Tue - NE wind around 5 kt. Waves around 2 ft or less.

Tue night - S wind around 5 kt. Waves around 2 ft or less. A chance of rain.

Wed - S wind 5 to 10 kt. Waves around 2 ft or less. A chance of rain.

Wed night - S wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Waves around 2 ft or less. Rain.
PZZ100 246 Am Pst Sat Dec 7 2024

Synopsis for the northern and central washington coastal and inland waters - A pair of frontal systems will cross the waters in quick succession this morning and again tonight. Surface high pressure will rebuild across the waters Sunday afternoon and move inland Sunday night. The ridge will remain over the waters into Tuesday. Another front will reach the area Wednesday night.

7 Day Forecast for Marine Location Near Bryn Mawr-Skyway, WA
   
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Tide / Current for Duwamish Waterway, Washington
  
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Duwamish Waterway
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Sat -- 02:36 AM PST     0.00 feet Low Tide
Sat -- 07:43 AM PST     Sunrise
Sat -- 10:02 AM PST     12.15 feet High Tide
Sat -- 12:27 PM PST     Moonrise
Sat -- 04:18 PM PST     Sunset
Sat -- 04:31 PM PST     5.93 feet Low Tide
Sat -- 08:39 PM PST     7.82 feet High Tide
Sat -- 11:17 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
        
Sorry tide depth graphs only, please select another station.

Duwamish Waterway, Washington, Tide feet
12
am
2.8
1
am
1.2
2
am
0.2
3
am
0.1
4
am
1.1
5
am
3
6
am
5.5
7
am
8
8
am
10.2
9
am
11.6
10
am
12.1
11
am
11.8
12
pm
10.8
1
pm
9.4
2
pm
7.9
3
pm
6.6
4
pm
6
5
pm
6
6
pm
6.5
7
pm
7.1
8
pm
7.7
9
pm
7.8
10
pm
7.3
11
pm
6.3

Tide / Current for Restoration Point, 0.6 miles ESE of, Washington Current
  
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Restoration Point
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Sat -- 03:20 AM PST     0.00 knots Slack
Sat -- 06:02 AM PST     0.70 knots Max Flood
Sat -- 07:44 AM PST     Sunrise
Sat -- 10:05 AM PST     -0.00 knots Slack
Sat -- 12:28 PM PST     Moonrise
Sat -- 01:27 PM PST     -0.66 knots Max Ebb
Sat -- 04:18 PM PST     Sunset
Sat -- 06:13 PM PST     0.00 knots Slack
Sat -- 06:32 PM PST     0.05 knots Max Flood
Sat -- 08:07 PM PST     -0.00 knots Slack
Sat -- 11:17 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
        
Sorry tide depth graphs only, please select another station.

Restoration Point, 0.6 miles ESE of, Washington Current, knots
12
am
-0.8
1
am
-0.6
2
am
-0.4
3
am
-0.1
4
am
0.3
5
am
0.6
6
am
0.7
7
am
0.6
8
am
0.5
9
am
0.3
10
am
0
11
am
-0.3
12
pm
-0.5
1
pm
-0.7
2
pm
-0.6
3
pm
-0.5
4
pm
-0.4
5
pm
-0.2
6
pm
-0
7
pm
0
8
pm
0
9
pm
-0.1
10
pm
-0.3
11
pm
-0.5

Area Discussion for Seattle, WA
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FXUS66 KSEW 071122 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 322 AM PST Sat Dec 7 2024

SYNOPSIS
A trio of frontal boundaries will continue to produce widespread precipitation this weekend across Western Washington. Rain with high snow levels will transition to snow in the Cascades above 3,000 feet later today as cool air sinks in behind one of the cold fronts moving through. Breezy conditions are also expected at times Saturday, primarily in the morning. Once the last front sweeps through Saturday into Sunday, conditions will dry out Monday and Tuesday before additional systems return middle of next week.

SHORT TERM /TODAY THROUGH MONDAY/
Latest surface analysis shows a warm front positioned on the southwest side of Victoria Bay with a cold front trailing just offshore. An additional cold front also sits behind the previously mentioned fronts. This is all sitting below an upper level closed low, with the polar jet blowing strong winds above feeding moisture into the region. This low will track inland over British Columbia late today and begin to fill moving onto land.

Plenty of precipitation is already on radar this morning (primarily along the coast and up to the Northwest Interior). Most of the precipitation bands have been light, but a couple heavier pockets have been observed. Gusty winds have also been observed in pockets of the region with the initial warm front scooting by to the north. Expectation is that the southerly wind gusts will have already peaked early this morning (widespread 35-40 mph gusts and a couple isolated higher gusts), and begin coming down to around 20 to 30 mph late this morning into Sunday morning.

Precipitation coverage will increase more throughout the morning and afternoon. This will primarily be stratiform in nature, with some convective pockets able to produce moderate to heavier rates of precipitation. Coverage will drop off to just the Cascades (convergence zone) going into late this afternoon and evening, with another round of scattered showers coming in with the third front later Saturday evening/Sunday morning, covering the whole region. The precipitation with this system will wrap up Sunday afternoon and evening (Cascades will be the last region to clear out).

In terms of precipitation totals, most of the QPF will fall on Saturday. Lowland areas will see around three quarters to just over an inch of rain. The Olympics and Pacific Coast will see 1 to 2 and half inches of QPF (heaviest over the Olympic Mountains), and the Cascades will be hit with generally 2 to 3 inches of QPF (locally higher amounts of 4 to 5 inches are possible at the highest peaks). For Sunday, lowlands and Pacific Coast will only see around a tenth to a quarter more inch of QPF, with the Olympics seeing half an inch to an inch, and the Cascades seeing an additional 1-2 more inches through the day.

Cold air will bring snow levels down later Saturday afternoon to around 3,000 feet. This will transition the rain in the Cascades and Olympics to snow, with the majority of the snow falling in the Cascades. There is a very low chance that freezing rain mixes in during the precipitation transition period late this morning (this would primarily concern areas east of Snoqualmie and Stevens Pass with trace amounts). Otherwise the main threat will be snow, with the heaviest of accumulations expected to be in the northern Cascades (9 to 15 inches total Saturday through Sunday). The South Central Cascades will still see around 6 to 10 inches of snow over the same time period. There will be the potential for convective snow bands able to produce heavier snowfall rates. This may also impact trips through the passes, so be sure to check road conditions before traveling.

With precipitation wrapping up Sunday, the concern will shift more to high surf along the Pacific Coast Sunday morning, due to seas building to 20 feet. resulting in breaker waves to the shoreline, and possible localized coastal shoreline erosion.

The low will depart the region late Sunday, with ridging to follow on Monday behind the low. This will dry out the entire region, with some nice weather to follow Monday and into Tuesday. Patchy fog will be possible (in the morning), and temperatures will cool back down into the low 30s for overnight temperatures (with highs in the 40s).

LONG TERM /TUESDAY THROUGH FRIDAY/
The upper level ridge pattern will continue with dry weather on Tuesday. Behind the ridge, there's disagreements in the operational and ensemble models on what will follow, but a majority of members agree on troughing returning in the second half of the week. This has resulted in increased precipitation chances going into this timeframe. Check back for more details as more is known getting closer to the middle of the week next week.

HPR

AVIATION
A pair of fronts moving through today and tonight.
Southwesterly flow aloft today becoming northwesterly tonight.
Increasing low level onshore flow tonight behind second front.

MVFR ceilings into Sunday morning with pockets of IFR along the coast and over the Kitsap peninsula. Convergence zone developing near KPAE late afternoon into the evening hours with possible IFR ceilings in the convergence zone as well. VFR ceilings Central and South Puget Sound while convergence zone is intact.

KSEA.. MVFR ceilings with visibility 3-5sm in rain at times into this afternoon. VFR ceilings for a few hours late afternoon into the evening hours with convergence zone well north of the terminal. Ceilings lowering back down to MVFR overnight into Sunday morning. South wind 4 to 8 knots increasing to 10 to 15 knots this afternoon into Sunday morning. Felton

MARINE
A pair of frontal systems will cross the waters in quick succession this morning and again tonight. Surface high pressure will rebuild across the waters Sunday afternoon and move inland Sunday night. The ridge will remain over the waters into Tuesday. Another front will reach the area Wednesday night.

Small craft advisory winds Central and Eastern Strait later today into tonight. Small craft advisory winds over portions of the coastal waters tonight and Sunday.

Seas around 10 feet today building to 14 to 19 feet tonight.
Seas subsiding to 12 to 14 feet Sunday night and to below 10 feet Monday.

Another round of small craft advisory winds possible with frontal system in the middle of next week along with seas in the coastal waters in the 10 to 14 foot range. Felton

HYDROLOGY
Systems moving through the area today will bring significant precipitation to the area especially the mountains.
Snow levels climbing to 7000 to 9000 feet during the bulk of the heavier rain today. This combined with the heavier rainfall, will result in rises on rivers across the region. While the precipitation forecast continues to fluctuate a bit run to run, 2 to 3 inches of rainfall appears most likely result. However, high end potential amounts would reach into the 4 to 5 inch range across portions of the Olympics and the northern and central Cascades. As a result, a flood potential outlook (ESF) remains in effect for Whatcom, Skagit, and Snohomish counties. A Flood Watch remains in effect for Mason County for the Skokomish River.
Current forecast for the Skokomish has it cresting barely below flood stage Sunday morning. A brief period of drier conditions will allow for rivers to recede early next week, but another round of hydrologically significant precipitation may follow later next week. Bower/Felton

CLIMATE
The rain held off at Seattle-Tacoma airport with just a trace of rain right before midnight last night. This means the first 6 days of December had no measurable rain in Seattle. How rare is this event? Very rare. In 80 years of records at Seattle- Tacoma airport this is only the 3rd time there has been no measurable precipitation in the first 6 days of December at the airport ( other years 1997 and 1984 ). The longest dry streak in December in Seattle is 21 days during the infamous fog ridge of December 1985 that made a mess of holiday travel. In December 1985 there was no measurable rain at Seattle-Tacoma airport December 8th through the 28th. For 13 days in a row, December 16th through the 28th, Seattle-Tacoma airport reported visibility of a 1/4 of a mile or less at some point during the day. Felton

SEW WATCHES/WARNINGS/ADVISORIES
WA...Flood Watch from this afternoon through Sunday evening for Hood Canal Area-Lower Chehalis Valley Area-Olympics.

Winter Storm Warning from 4 PM this afternoon to 4 PM PST Sunday for West Slopes North Cascades and Passes-West Slopes North Central Cascades and Passes.

Winter Weather Advisory from 4 PM this afternoon to 4 PM PST Sunday for West Slopes South Central Cascades and Passes.

PZ...Small Craft Advisory until 4 AM PST Sunday for 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 from 10 AM this morning to 4 AM PST Sunday for Central U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 4 PM PST this afternoon for East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 4 AM PST early this morning for Admiralty Inlet-Northern Inland Waters Including The San Juan Islands-Puget Sound and Hood Canal.

Gale Warning until 4 AM PST early this morning 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.

Small Craft Advisory until 4 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-Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
WPOW1 - West Point, WA 14 mi18 minS 18G20 51°F 29.9951°F
TCMW1 - 9446482 - Tacoma Met, WA 19 mi48 minSSW 12G15 52°F
TCNW1 - 9446484 - Tacoma, WA 19 mi48 min 52°F30.03
BMTW1 20 mi48 minNNE 7G11 50°F 30.00
46121 30 mi158 minSSW 12 50°F 47°F
46125 33 mi168 min 50°F 47°F
PTWW1 - 9444900 - Port Townsend, WA 49 mi48 minE 6G7 50°F 49°F29.98


Wind History for Tacoma MET, WA
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Airport Reports
   
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KBFI BOEING FIELD/KING COUNTY INTL,WA 2 sm24 minS 08G166 smOvercast Lt Rain Mist 52°F48°F87%29.98
KRNT RENTON MUNI,WA 3 sm24 minSE 063 smOvercast Lt Rain Mist 50°F48°F94%30.00
KSEA SEATTLETACOMA INTL,WA 6 sm24 minSSW 12G195 smOvercast Lt Rain Mist 48°F48°F100%29.99
KTIW TACOMA NARROWS,WA 24 sm24 minSW 13G237 smOvercast Lt Rain 50°F48°F94%30.01

Weather Map
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GEOS Local Image of Pacific Northwest  
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Seattle/Tacoma, WA,





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