SeaTac, WA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for SeaTac, WA

April 15, 2024 5:35 PM PDT (00:35 UTC) Change Location
Sunrise 6:17 AM   Sunset 8:00 PM
Moonrise 10:19 AM   Moonset 2:23 AM 
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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.

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Marine Forecasts
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PZZ135 Puget Sound And Hood Canal- 245 Pm Pdt Mon Apr 15 2024

Tonight - NW wind 10 to 20 kt becoming W 5 to 15 kt after midnight. Wind waves 1 to 3 ft.

Tue - SW wind to 10 kt becoming N in the afternoon. Wind waves 1 ft or less.

Tue night - NW wind to 10 kt becoming sw after midnight. Wind waves 1 ft or less.

Wed - E wind to 10 kt becoming N 10 to 20 kt in the afternoon. Wind waves 1 ft or less building to 1 to 3 ft in the afternoon.

Wed night - N wind 10 to 20 kt becoming 5 to 15 kt after midnight. Wind waves 1 to 3 ft.

Thu - N wind 10 to 20 kt rising to 15 to 25 kt in the afternoon. Wind waves 1 to 3 ft building to 2 to 4 ft.

Thu night - N wind 15 to 25 kt easing to 10 kt after midnight. Wind waves 2 to 4 ft subsiding to 1 ft or less after midnight.

Fri - NE wind 5 to 15 kt. Wind waves 2 ft or less.

Sat - SE wind to 10 kt becoming sw. Wind waves 1 ft or less.

PZZ100 245 Pm Pdt Mon Apr 15 2024

Synopsis for the northern and central washington coastal and inland waters - Onshore flow will continue today in the wake of a frontal system. Gale-force westerlies will persist along the strait of juan de fuca this afternoon and evening. Surface high pressure will gradually build across the coastal waters Tuesday into Wednesday and will interact with lower pressure inland through Friday. Another frontal system will move into the area waters over the weekend.


7 Day Forecast for Marine Location Near SeaTac, WA
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Area Discussion for - Seattle, WA
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FXUS66 KSEW 152149 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 249 PM PDT Mon Apr 15 2024

SYNOPSIS
Upper level troughing continues to bring cooler temperatures and showers back to western Washington through Tuesday. Ridging will then return midweek for warmer and drier conditions, followed by a weak frontal passage over the weekend.

SHORT TERM /TONIGHT THROUGH THURSDAY/
Zonal flow aloft this afternoon as an upper level trough slides southeastward through British Columbia, maintaining cooler and showery conditions for our area. Recent radar imagery thid afternoon shows a developing convergence zone around southern Snohomish/northern King county this afternoon. This feature will likely stick around through much of the evening for central Puget Sound and start to dissipate late tonight. Scattered showers do look to stay around for majority of the area, but latest guidance really shows very spotty coverage with them. High temperatures today look to remain noticeably cooler from previous days, topping out in the mid 50s.

Snow levels around 3000-3500 feet look to fall to around 1500-2000 feet tonight, so a few inches of snow look to be possible in and around the mountain passes, maybe locally heavier in and around the convergence zone as it drifts eastward.

Weak troughing will linger into Tuesday as well as scattered showers and cooler temperatures (mid 50s). Most showers will most likely be confined to the mountains to due some orographic enhancement.

Troughing will progress away from the area on Wednesday, leaving room for an upper level ridge in the NE Pacific to shift eastward closer to our area, bringing drier and warmer conditions into Thursday. Temperatures will begin to warm starting on Wednesday into the lower 60s, then into the mid 60s on Thursday.

LONG TERM /FRIDAY THROUGH MONDAY/
Conditions continue to be warm and dry into Friday, with the ridge axis looking to move over western Washington. The exact location and intensity of the ridge continues to change, so uncertainty lies in how warm we get, but looks like mid to upper 60s is the best bet for Friday, with Friday looking like the warmest day of the week.

Ensemble members continue to show a weak front that may brush the area into Saturday, which would allow temperatures to moderate some heading into the weekend with the possibility of some showers around. Warmer conditions still look to remain, with temps in the long term looking to stay in the upper 50s/lower 60s.

Mazurkiewicz

AVIATION
Conditions are mainly VFR to MVFR this afternoon across the region in a post frontal environment. Westerly to northwesterly flow will continue aloft. Latest radar shows convergence zone showers persisting across the central Sound this afternoon along with some scattered light shower activity along the coast. With onshore flow increasing this evening, expect convergence zone activity to linger into Tuesday morning. As such, lower cigs and a brief shift in wind direction will be possible for interior terminals along the central Sound at times within its vicinity. Outside of the CZ activity, may see some lower MVFR cigs redevelop overnight into early Tuesday morning - mainly for terminals along the southern Sound (KOLM). Overall conditions then look to rebound to widespread VFR by late Tuesday morning.

KSEA...VFR conditions with southwesterly winds 4-8 kt. Convergence zone showers will continue to persist within the vicinity of the terminal into early Tuesday and may bring a brief wind shift to the north for the terminal and ceilings down to MVFR at times.
CZ showers will taper Tuesday morning, with VFR conditions expected by Tuesday afternoon. 14

MARINE
Gusty onshore flow will continue in the wake of a frontal passage tonight, with gales expected through Admiralty Inlet and the Central and Eastern Strait of Juan de Fuca.
Elsewhere, Small Craft Advisories remain in effect for portions of the coastal waters and for the West Entrance of the Strait through early Tuesday. Winds will ease Tuesday and high pressure builds into the coastal waters and interacts with lower pressure inland. This pattern will remain in place through much of the week for overall calmer conditions across the area waters. The next frontal system arrives over the weekend.

Seas over the coastal waters continue to hover between 8 and 10 feet this afternoon and will gradually lower back towards 7 to 9 feet tonight into Tuesday. Seas will continue to subside through the week, trending below 5 feet Thursday and Friday. Seas will then increase towards 6 to 8 feet again over the weekend. 14

HYDROLOGY
No river flooding is expected through the next seven days.

SEW WATCHES/WARNINGS/ADVISORIES
WA...None.
PZ...Small Craft Advisory until 5 AM PDT Tuesday 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-West Entrance U.S. Waters Strait Of Juan De Fuca.

Gale Warning until 5 AM PDT Tuesday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Gale Warning from 5 PM this afternoon to 5 AM PDT Tuesday for Admiralty Inlet.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
TCMW1 - 9446482 - Tacoma Met, WA 12 mi48 min WSW 15G21 54°F
TCNW1 - 9446484 - Tacoma, WA 13 mi48 min 50°F30.27
WPOW1 - West Point, WA 19 mi36 min N 15G16 49°F 30.2638°F
BMTW1 21 mi48 min 30.27


Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KSEA SEATTLETACOMA INTL,WA 3 sm42 minWSW 0610 smMostly Cloudy54°F36°F50%30.24
KRNT RENTON MUNI,WA 6 sm42 minNNW 0810 smOvercast54°F43°F67%30.24
KBFI BOEING FIELD/KING COUNTY INTL,WA 8 sm42 minNE 0610 smMostly Cloudy54°F39°F58%30.25
KTIW TACOMA NARROWS,WA 19 sm42 minSW 10G1710 smMostly Cloudy55°F30°F38%30.24
KPLU PIERCE COUNTY THUN FIELD,WA 22 sm20 minvar 05G1610 smMostly Cloudy55°F28°F35%30.25
KTCM MCCHORD FIELD (JOINT BASE LEWISMCCHORD),WA 22 sm40 minW 0810 smMostly Cloudy57°F30°F36%30.24
Link to 5 minute data for KSEA


Wind History from SEA
(wind in knots)
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Tide / Current for Des Moines, Washington
   
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Des Moines
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Mon -- 12:21 AM PDT     11.13 feet High Tide
Mon -- 03:23 AM PDT     Moonset
Mon -- 05:45 AM PDT     7.71 feet Low Tide
Mon -- 06:19 AM PDT     Sunrise
Mon -- 09:41 AM PDT     8.93 feet High Tide
Mon -- 11:19 AM PDT     Moonrise
Mon -- 12:14 PM PDT     First Quarter
Mon -- 05:23 PM PDT     0.49 feet Low Tide
Mon -- 07:59 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Des Moines, Washington, Tide feet
12
am
11.1
1
am
11
2
am
10.3
3
am
9.3
4
am
8.4
5
am
7.8
6
am
7.7
7
am
8
8
am
8.4
9
am
8.8
10
am
8.9
11
am
8.5
12
pm
7.6
1
pm
6.2
2
pm
4.5
3
pm
2.8
4
pm
1.3
5
pm
0.6
6
pm
0.7
7
pm
1.6
8
pm
3.1
9
pm
5.1
10
pm
7.3
11
pm
9.1



Tide / Current for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
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Mon -- 12:08 AM PDT     -0.00 knots Slack
Mon -- 03:11 AM PDT     -0.45 knots Max Ebb
Mon -- 03:24 AM PDT     Moonset
Mon -- 06:19 AM PDT     Sunrise
Mon -- 08:20 AM PDT     -0.02 knots Min Ebb
Mon -- 11:18 AM PDT     Moonrise
Mon -- 12:14 PM PDT     First Quarter
Mon -- 02:18 PM PDT     -0.73 knots Max Ebb
Mon -- 06:23 PM PDT     0.00 knots Slack
Mon -- 08:00 PM PDT     Sunset
Mon -- 09:01 PM PDT     0.55 knots Max Flood
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
1
am
-0.2
2
am
-0.4
3
am
-0.5
4
am
-0.4
5
am
-0.3
6
am
-0.2
7
am
-0.1
8
am
-0
9
am
-0
10
am
-0.1
11
am
-0.3
12
pm
-0.5
1
pm
-0.6
2
pm
-0.7
3
pm
-0.7
4
pm
-0.6
5
pm
-0.4
6
pm
-0.1
7
pm
0.2
8
pm
0.5
9
pm
0.6
10
pm
0.5
11
pm
0.4




Weather Map
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Seattle/Tacoma, WA,



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