Wednesday, April8, 2020
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Marine Weather and Tides
Marietta-Alderwood, 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.

Sunrise 6:29AMSunset 7:53PM Wednesday April 8, 2020 2:27 AM PDT (09:27 UTC) Moonrise 7:59PMMoonset 6:18AM Illumination 100% Phase: Full Moon; Moon at 15 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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PZZ133 Northern Inland Waters Including The San Juan Islands- 205 Am Pdt Wed Apr 8 2020
Today..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Tonight..NW wind 5 to 15 kt becoming N to 10 kt after midnight. Wind waves 2 ft or less.
Thu..NW wind to 10 kt. Wind waves 1 ft or less.
Thu night..W wind to 10 kt becoming sw after midnight. Wind waves 1 ft or less.
Fri..SW wind to 10 kt in the morning becoming light. Wind waves 1 ft or less in the morning becoming less than 1 ft.
Fri night..W wind to 10 kt. Wind waves 1 ft or less.
Sat..NW wind to 10 kt. Wind waves 1 ft or less.
Sun..NE wind to 10 kt becoming nw. Wind waves 1 ft or less.
PZZ100 205 Am Pdt Wed Apr 8 2020
Synopsis for the northern and central washington coastal and inland waters..Light northerly flow today. Onshore flow will return late in the week as a series of weak systems affect the area.


7 Day Forecast for Marine Location Near Marietta-Alderwood, WA
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location: 48.76, -122.7     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 080415 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 915 PM PDT Tue Apr 7 2020

SYNOPSIS. Upper level ridging will remain the dominant weather feature across the region over the next few days, keeping Western Washington dry and allowing temperatures to warm through Thursday. Chances of rain will increase over the weekend as a weak system skirts past the area.

SHORT TERM /TONIGHT THROUGH FRIDAY/. Satellite imagery shows just a few high clouds over Western Washington this evening. Super Pink Moon shining bright over Seattle this evening. Temperatures at 9 pm/04z were in the mid 40s to lower 50s.

Upper level ridge building over the area through Wednesday and remaining over Western Washington Thursday. Low level flow going light offshore Wednesday with the low level flow remaining light into Thursday. This will keep low clouds and fog at a minimum both mornings with plenty of daytime sunshine. Highs will be in the 50s and lower 60s with a few mid 60s Thursday.

Weak shortwave riding by to the north Thursday night will flatten the ridge and turn the low level flow onshore Friday. This will cool high temperatures a couple of degrees versus Thursday. Still with a sunny afternoon highs will still be in the 50s and lower 60s. Current forecast has the trends covered. No update this evening. Felton

LONG TERM /SATURDAY THROUGH TUESDAY/. Previous discussion follows. Deterministic models are in slightly better agreement with a weak system skirting past the region on Saturday. Thus, have kept slight chance of POPs in the forecast for now. Sunday and Monday are trending drier as the upper level ridge axis offshore shifts further eastward over the region. Western Washington could see another quick shot of precipitation on near midweek as another weak system traverses the area. However, guidance continues to have difficulty resolving this feature at this time, so will have to see how newer runs trend in the coming days. SB

AVIATION. Surface gradients trending offshore this evening with KOLM-KBLI gradient at -1.2 mb and KOTH-KSEA at -2.3 mb at 03z/ 8 pm. Still have around plus 7 mb across the Cascades but models bring this number down to near 0 by 15z Wednesday. The trend toward offshore flow will keep stratus at a minimum Wednesday morning. Some patchy fog possible in the Southwest Interior. Other then that just a few high clouds through Wednesday night.

KSEA . Just a few high clouds. Northerly wind 3 to 6 knots increasing to 8 to 12 knots Wednesday afternoon. Felton

MARINE. Low level flow turning northerly overnight into Wednesday. Onshore flow returns late in the week as a series of weak systems brush the area. Diurnal increases in onshore flow should be enough for advisory level westerlies in the Strait of Juan de Fuca late Thursday and again Friday. Apart from those, no other significant winds are expected across area waters in the week ahead.

HYDROLOGY. No rain flooding expected in the next 7 days.

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

www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHYW1 - 9449424 - Cherry Point, WA 8 mi58 min 1026.6 hPa
CPMW1 8 mi64 min NNW 1.9 G 2.9 43°F
CPNW1 8 mi76 min Calm G 1.9 44°F
FRDW1 - 9449880 - Friday Harbor, WA 22 mi52 min SSW 1 G 1.9 40°F 47°F1026.3 hPa
PBFW1 - Padilla Bay Reserve, WA 24 mi58 min NNE 1 37°F 1026 hPa34°F
SISW1 - Smith Island, WA 31 mi38 min W 6 G 7 46°F 1026.3 hPa43°F
46088 - New Dungeness, WA (Hein Bank) 39 mi38 min W 1.9 G 1.9 46°F1 ft1027.3 hPa
PTWW1 - 9444900 - Port Townsend, WA 45 mi58 min W 7 G 9.9 45°F 47°F1026.9 hPa

Wind History for Cherry Point South Dock, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bellingham, Bellingham International Airport, WA9 mi35 minNNE 310.00 miFair34°F28°F82%1027.1 hPa
Eastsound, Orcas Island Airport, WA11 mi33 minN 0 miA Few Clouds39°F33°F81%1026.4 hPa
Friday Harbor Airport, WA24 mi35 minN 010.00 miFair37°F34°F89%1026.6 hPa

Link to 5 minute data for KBLI

Wind History from BLI (wind in knots)
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Last 24hrS5S4S6S5S3S4S5S8S7S7S8S96S6S7SW4CalmCalmCalmCalmCalmCalmN3N3
1 day agoCalmCalmCalmCalmCalmN3NE4Calm3S7S9S5S8S7S6S4S5S4S6S7S6S7S6S8
2 days agoN6NE5NE5N4N5NE5NE8NE11N13
G18
N9NE9N6N10NW7W7NW6NW4NW4NW3N3CalmCalmCalmCalm

Tide / Current Tables for Point Migley, Hale Passage, Washington
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Hale Passage, 0.5 miles SE of Lummi Pt, Washington Current
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Hale Passage
Click for Map
Wed -- 12:12 AM PDT     0.00 knots Slack
Wed -- 03:19 AM PDT     1.77 knots Max Flood
Wed -- 06:11 AM PDT     -0.00 knots Slack
Wed -- 06:34 AM PDT     Sunrise
Wed -- 07:18 AM PDT     Moonset
Wed -- 09:53 AM PDT     -1.47 knots Max Ebb
Wed -- 12:51 PM PDT     0.00 knots Slack
Wed -- 04:00 PM PDT     1.93 knots Max Flood
Wed -- 07:18 PM PDT     -0.00 knots Slack
Wed -- 07:51 PM PDT     Sunset
Wed -- 08:57 PM PDT     Moonrise
Wed -- 10:20 PM PDT     -1.06 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.10.71.41.81.610.2-0.4-1-1.3-1.5-1.2-0.60.11.11.71.91.71.10.3-0.4-0.8-1-1

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 (5,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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weather_mapweather_map weather_map

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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 numerous 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.