Friday, December6, 2019
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Marine Weather and Tides
Seattle, WA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:41AMSunset 4:19PM Friday December 6, 2019 6:16 AM PST (14:16 UTC) Moonrise 2:03PMMoonset 1:34AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 days in cycle
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- 216 Am Pst Fri Dec 6 2019
Today..S wind to 10 kt becoming sw in the afternoon. Wind waves 1 ft or less. A chance of showers in the afternoon.
Tonight..SE wind 5 to 15 kt. Wind waves 2 ft or less. Rain likely.
Sat..SW wind to 10 kt. Wind waves 1 ft or less. Showers.
Sat night..Light wind becoming N to 10 kt after midnight. Wind waves 1 ft or less.
Sun..N wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Sun night..Light wind. Wind waves less than 1 ft.
Mon..Light wind. Wind waves less than 1 ft.
Tue..S wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 216 Am Pst Fri Dec 6 2019
Synopsis for the northern and central washington coastal and inland waters..Offshore flow will increase over the waters today. Winds will ease late tonight. The flow will remain offshore on Saturday as a surface low spins over the outer coastal waters. This low will weaken as it moves into northern california Saturday night. Offshore flow will persist into early next week with high pressure east of the cascades.


7 Day Forecast for Marine Location Near Seattle, WA
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location: 47.68, -122.41     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 061044 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 244 AM PST Fri Dec 6 2019

SYNOPSIS. A weak front will spread light rain across Western Washington this evening through Saturday morning. The low will move east of the area Saturday night. An upper level ridge will build offshore Sunday for dry weather through early Tuesday. The next system should slide through later on Tuesday.

SHORT TERM /TODAY THROUGH SUNDAY/. Radar as of 2AM shows areas of light rain showers across portions of the northern Olympic Peninsula and North Interior as a warm front lifts through. Dry weather elsewhere with patchy low clouds and fog in spots. An area of low pressure well offshore will slide east through today. A weak front with this system will move onshore later today into tonight with light rain across Western Washington. The interior will stay generally dry through this afternoon as the rain moves onshore with showers overnight into Saturday morning. Snow levels with this system will be around 4500 feet, with at least a rain/snow mix and an inch or two possible at Stevens Pass. Showers will be in the area Saturday afternoon before diminishing Saturday night as the system moves east.

An upper level ridge will build offshore Sunday morning with drier weather expected along with areas of morning fog. Partly sunny skies expected by the afternoon. Temperatures into the weekend will be in the upper 40s to mid 50s across Western Washington. JD

LONG TERM /MONDAY THROUGH THURSDAY/. The upper level ridge will build over the area on Monday. Areas of fog expected on Monday with the ridge with mostly sunny conditions by afternoon. The ridge will slide east on Tuesday as the next frontal system approaches. The first system will move through later Tuesday into Tuesday night although it may weaken as it does slide across the area. Guidance does show a more substantial system may move through by Thursday with ensembles suggesting a more active pattern later next week. JD

AVIATION. An approaching upper level low will shift flow aloft from westerly to southwesterly this morning and it will remain from the SW for the remainder of the day. Surface flow remains offshore . easterly to southeasterly over W WA.

Cigs generally VFR this early morning although starting to see some IFR conditions arise in the SW interior /OLM/ . along the Strait /CLM/ and an isolated patch right around PAE. These locations should recover some back into at least MVFR conditions by this afternoon but this recovery will be limited due to approaching system. For the majority of locations . VFR conditions will persist into this afternoon before beginning to deteriorate down into MVFR with increasing clouds and the chance for rain moving in by this evening. Showers will linger on into Saturday as the upper low moves over the area keeping MVFR to IFR conditions over W WA.

KSEA . Generally VFR conditions this morning and afternoon. Conditions may deteriorate to MVFR this evening and tonight with approaching system. Surface winds northeasterly becoming southeasterly this afternoon with speeds 5 to 10 kts. SMR

MARINE. Offshore flow will increase over the waters today - Small Craft Advisories are in effect. Winds will ease late tonight. The flow will remain offshore on Saturday as a surface low spins over the outer Coastal Waters. This low will weaken as it moves into northern California Saturday night or early Sunday. Offshore flow will persist into early next week with high pressure over interior B.C. 33

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

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory until 4 AM PST Saturday for Central U.S. Waters Strait Of Juan De Fuca-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-East Entrance U.S. Waters Strait Of Juan De Fuca- Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory until 6 PM PST this evening for West Entrance U.S. Waters Strait Of Juan De Fuca.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 2 mi77 min N 4.1 G 5.1 47°F 1013.7 hPa (-0.8)46°F
46120 6 mi17 min Calm 47°F 1012.5 hPa44°F
46125 19 mi33 min 46°F 1012.5 hPa44°F
TCMW1 - 9446482 - Tacoma Met, WA 28 mi53 min SE 4.1 G 6
TCNW1 - 9446484 - Tacoma, WA 29 mi53 min 44°F 52°F1014.1 hPa
PTWW1 - 9444900 - Port Townsend, WA 35 mi53 min SE 1.9 G 2.9 46°F 49°F1013.6 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boeing Field - King County International Airport, WA12 mi24 minN 010.00 miOvercast46°F43°F89%1013.4 hPa
Renton Municipal Airport, WA16 mi24 minSSE 310.00 miOvercast44°F42°F93%1013.9 hPa
Everett Snohomish County, WA17 mi24 minESE 410.00 miOvercast47°F39°F77%1013.2 hPa
Seattle, Seattle-Tacoma International Airport, WA17 mi24 minS 310.00 miOvercast44°F41°F89%1014 hPa
Bremerton, Bremerton National Airport, WA24 mi21 minSSW 39.00 miMostly Cloudy40°F39°F97%1015.2 hPa

Link to 5 minute data for KBFI

Wind History from BFI (wind in knots)
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Last 24hrN43CalmCalmCalmCalmCalmCalmCalmSW3CalmCalmNW3CalmCalmNE3CalmCalmCalmCalmCalmNW3CalmCalm
1 day agoSE7SE5CalmCalmSW3SW3NW3CalmCalmN3NW353NW4N3N6N3Calm3N4N3N3CalmCalm
2 days agoSE9SE8SE9SE10S11S10
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Tide / Current Tables for Meadow Point, Shilshole Bay, Washington
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Meadow Point
Click for Map
Fri -- 12:41 AM PST     7.47 feet High Tide
Fri -- 01:33 AM PST     Moonset
Fri -- 05:58 AM PST     4.33 feet Low Tide
Fri -- 07:42 AM PST     Sunrise
Fri -- 12:44 PM PST     11.02 feet High Tide
Fri -- 02:03 PM PST     Moonrise
Fri -- 04:18 PM PST     Sunset
Fri -- 07:42 PM PST     3.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.47.47.16.45.44.64.34.75.678.59.910.81110.59.37.55.74.13.233.64.76

Tide / Current Tables for Alki Point, 0.3 miles W of, Washington Current
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Alki Point
Click for Map
Fri -- 12:05 AM PST     -0.00 knots Slack
Fri -- 01:34 AM PST     Moonset
Fri -- 03:12 AM PST     -0.28 knots Max Ebb
Fri -- 06:26 AM PST     0.00 knots Slack
Fri -- 07:42 AM PST     Sunrise
Fri -- 09:12 AM PST     0.39 knots Max Flood
Fri -- 12:22 PM PST     -0.00 knots Slack
Fri -- 02:03 PM PST     Moonrise
Fri -- 04:02 PM PST     -0.53 knots Max Ebb
Fri -- 04:18 PM PST     Sunset
Fri -- 08:18 PM PST     0.00 knots Slack
Fri -- 10:29 PM PST     0.30 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0-0.1-0.2-0.3-0.3-0.2-0.10.10.30.40.40.30.1-0.1-0.3-0.5-0.5-0.5-0.4-0.2-00.20.30.3

Weather Map
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wmap_P
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
Wind Forecast for Seattle, WA (9,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.