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Marine Weather and Tides Shelton, WA Version 3.4

NOTICE 12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed. 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

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Sunrise 6:41AM

Sunset 7:47PM

Saturday April 4, 2020 4:46 PM PDT (23:46 UTC)

Moonrise 2:27PM

Moonset 4:29AM

Illumination 90%

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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7 Day Forecast for Marine Location Near Shelton, WA

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Area Discussion for - Seattle, WA

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FXUS66 KSEW 042305 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 405 PM PDT Sat Apr 4 2020

SYNOPSIS. Upper level low well offshore will move south tonight and Sunday. A weak upper level trough will move over the area from the north Sunday. Upper level ridge beginning to build offshore Monday with the ridge moving inland in the middle of next week. Another weather system will try to move through the ridge next Friday or Saturday.

SHORT TERM /TONIGHT THROUGH TUESDAY/. Satellite imagery shows mostly cloudy skies over most of Western Washington this afternoon. Doppler radar not picking up any shower activity at 23z/4 pm with the leading edge of the band of showers moving up from the south near Portland. Temperatures were in the mid 40s to lower 50s.

Upper level low well offshore will continue to dig south tonight. This will make the flow aloft over Western Washington more southernly pushing the shower activity over the Portland area north into the Southwest Interior. This feature is splitting slightly as it moves north so expect the shower activity to die off before it reaches the Central Puget Sound. Mostly cloudy conditions will continue overnight. Lows in the 30s and lower 40s.

Upper level low offshore continuing to move south Sunday with the southerly flow aloft shutting off then being replaced by a drier northwesterly flow aloft as an upper level trough moves into the area. Air mass slightly unstable with the trough but with the limited moisture will confine the chance of showers mostly to the higher terrain. Some mid and high level moisture will keep skies partly sunny/mostly cloudy. Highs a little warmer, in the lower to mid 50s.

Upper level trough hanging over the area Sunday evening before kicking off to the east early Monday morning. This will keep the threat of showers in the Cascades intact Sunday night. For the remainder of the area cloud cover decreasing overnight as the trough moves east. Lows Monday morning in the 30s with the cooler locations near freezing.

Northwesterly flow aloft continuing on Monday as an upper level ridge slowly starts to build over the eastern Pacific. Low level onshore flow will bring some morning clouds to the area with mostly sunny skies in the afternoon. Highs in the 50s with lower 60s possible over the Southwest Interior.

Upper level ridge continuing to slowly build offshore Monday night into Tuesday with dry northwesterly flow aloft. Surface flow remaining onshore combined with the ridge being relatively weak will keep high temperatures mostly in the 50s but Tuesday will be a dry day.

LONG TERM /WEDNESDAY THROUGH SATURDAY/. Extended models in good agreement Wednesday and Thursday with the upper level ridge nosing into the area Wednesday night and Thursday. Thursday looks to be the warmer day of the two sunny days with warmer locations getting into the mid 60s. The forecast high of 63 on Thursday would be the warmest day in Seattle since October 24th. Most of the high Wednesday and Thursday will be in the 50s and lower 60s.

Model consistency breaks down Friday and Saturday with the ECMWF keeping the ridge in place Friday followed by a very weak system Saturday. The GFS breaks the ridge down sooner with rain spreading into the area Friday with a trough trailing the system for Saturday. ECMWF ensemble solutions for Friday have about 20 percent of the members indicating light precipitation, a little more wet then the operational solution. The GFS has a little over half the ensemble members indicating precipitation, drier than the operational run would indicate. End result will have chance pops in the forecast Friday. A few more of the ensemble members are wet for Saturday in the ECMWF but the precipitation is light. Given the inconsistency in the models will stay with chance pops for Saturday. Felton

AVIATION. An upper level low will spin offshore tonight with moisture/rain mainly clipping areas near the WA/OR border. Elsewhere, dry conditions continue with VFR conditions expected. The flow aloft is southerly. Surface winds are mainly light N/NE. Dry weather on Sunday as the offshore low pushes farther south toward central CA. 33

KSEA . N winds to 10 kt this evening with VFR conditions. 33

MARINE. Weak low pressure will remain over Oregon through Sunday with generally light north to northeast flow across western Washington. The flow will turn onshore on Monday as high pressure builds over the NE Pacific, with westerly winds increasing through the strait of Juan de Fuca (gales or Small Craft Advisory winds likely). Weak offshore flow will develop midweek. 33

HYDROLOGY. River flooding not expected in the next 7 days.

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

www.weather.gov/seattle

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
46121	19 mi	21 min	3.9	51°F			1004.2 hPa	34°F
TCMW1 - 9446482 - Tacoma Met, WA	35 mi	46 min	N 9.9 G 13
TCNW1 - 9446484 - Tacoma, WA	36 mi	46 min		53°F	48°F		1004.9 hPa (-3.1)
WPOW1 - West Point, WA	47 mi	46 min	N 13 G 14	47°F			1005.3 hPa (-3.1)	36°F

Wind History for Tacoma MET, WA

(wind in knots)    EDIT      (on/off)   Help

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SW10 G17

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SW12 G17

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Shelton, Shelton Sanderson Field, WA	4 mi	53 min	NE 5	10.00 mi	Overcast	51°F	28°F	43%	1004.2 hPa
Olympia, Olympia Airport, WA	18 mi	52 min	NE 4	10.00 mi	A Few Clouds	53°F	30°F	41%	1004.2 hPa

Link to 5 minute data for KSHN

Wind History from SHN (wind in knots)

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W16 G20

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SW10 G14

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Tide / Current Tables for Shelton, Washington

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Tide / Current Tables for Hammersley Inlet, W of Skookum Pt, Washington Current

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Weather Map

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GEOS Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Seattle, WA (19,4,5,8)

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Ground Weather Radar Station Seattle/Tacoma, WA

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