Sunday, August18, 2019 L-36.com


Marine Weather and Tides
Vashon, WA

Version 3.4
NOTICE
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 6:08AMSunset 8:18PM Sunday August 18, 2019 2:05 PM PDT (21:05 UTC) Moonrise 9:02PMMoonset 8:09AM Illumination 89% Phase: Waning Gibbous; Moon at 18 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- 838 Am Pdt Sun Aug 18 2019
Today..Light wind becoming sw to 10 kt in the afternoon. Wind waves 1 ft or less.
Tonight..Variable wind to 10 kt becoming S after midnight. Wind waves 1 ft or less.
Mon..SE wind to 10 kt. Wind waves 1 ft or less.
Mon night..N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Tue..Light wind becoming S 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tue night..Variable wind to 10 kt becoming S 5 to 15 kt after midnight. Wind waves 2 ft or less.
Wed..S wind 5 to 15 kt easing to 10 kt. Wind waves 2 ft or less.
Thu..Light wind becoming N to 10 kt. Wind waves 1 ft or less.
PZZ100 838 Am Pdt Sun Aug 18 2019
Synopsis for the northern and central washington coastal and inland waters..Low level onshore flow through tonight will become light Monday and Tuesday. A front will move through the waters on Wednesday. High pressure will build over the coastal waters behind the front Thursday.


7 Day Forecast for Marine Location Near Vashon, WA
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location: 47.4, -122.46     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 181535
afdsew
area forecast discussion
national weather service seattle wa
835 am pdt Sun aug 18 2019

Synopsis Onshore flow into Monday as a weak weather system
passes to the north of western washington. An upper level ridge
will strengthen early next week for warmer temperatures and more
sun. A front is expected around the middle of the week with a
chance for showers and cooler temperatures.

Short term today through Tuesday Satellite imagery shows
stratus clouds across much of western washington this morning with
low level onshore flow. More sunshine is expected this afternoon
with generally weaker onshore flow and a marine layer that is a
bit less organized as a system slides to the north of the area.

Temperatures this afternoon will be in the upper 60s to mid 70s
across the area.

Dry weather through Tuesday with an upper level ridge building
across the area Monday afternoon. Low level flow will become light
or even weakly offshore by Tuesday. Clouds will begin to increase
Tuesday afternoon ahead of the next system. Higher heights with
additional sunshine will boost temperatures into the 70s for
Monday with 80s in most places across the interior Tuesday
afternoon. Jd

Long term Wednesday through Saturday A trailing cold front
associated with the upper trough offshore will move onshore on
Wednesday. The models haven't been very consistent with its
strength, but it does seem like the coast and olympic peninsula
will get some decent QPF out of it. How much is left by the time
the weakening front reaches the interior is still in question.

Plenty of cloud cover and cooler temperatures are a good bet for
Wednesday.

The front looks to dissipate in the cascades Wednesday night with
zonal flow and drier conditions expected for Thursday. The mean
trough position remains in place to our northwest as we approach
the weekend with another system possibly clipping the northwest
corner of the state Friday night or Saturday. 27

Aviation Low level onshore flow will becoming light on Monday.

Westerly flow aloft.

Like the previous two mornings... W wa is once again socked in with
low level clouds over much of the area. Unlike the past two mornings
though... Current satellite trends are hinting at some possible
thinning over the puget sound area... Including ksea. While
improvement seems minimal on satellite loop... Current obs from ksea
and kbfi seem to support this with reports of few to sct clouds. For
the remainder of the area there has not be much improvement yet with
cigs generally still MVFR. Continue to expect CIGS to lift gradually
through the morning with widespreadVFR conditions expected this
afternoon... With the potential for some clearing this evening and
tonight before stratus returns early Monday morning and bringing
conditions back into MVFR range.

Ksea... As stated above... Conditions improving over the terminal but
still the prospect for bkn low level clouds through the remainder of
the morning. CIGS still expected to lift back up to the 4500-6000
foot level this afternoon before scattering this evening and tonight
before stratus returns early Monday morning. Winds south southwest 4
to 8 knots. Smr

Marine Low level onshore flow through tonight will
becoming light Monday and Tuesday. Small craft advisory westerlies
expected in the central and eastern strait of juan de fuca tonight.

Given the brief period of SCA winds in the strait Saturday
night... Will leave inherited headline alone for the morning forecast
package. A front will move through the waters on Wednesday with
small craft advisory southerlies over the coastal waters. High
pressure will build over the coastal waters behind the front
Thursday. Smr felton

Hydrology The daily hydrology discussion has ended until the
start of the next rainy season; it will only be updated as needed
until then.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 6 pm this evening to 2 am pdt Monday
for central u.S. Waters strait of juan de fuca-east
entrance u.S. Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 9 mi60 min N 2.9 G 2.9
TCNW1 - 9446484 - Tacoma, WA 10 mi60 min 69°F 57°F1012.4 hPa
46121 17 mi32 min 66°F 1012.2 hPa58°F
WPOW1 - West Point, WA 18 mi66 min S 5.1 G 5.1 67°F 1012.5 hPa (+0.0)56°F
46120 25 mi32 min N 1.9 60°F 1011.3 hPa57°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle-Tacoma International Airport, WA8 mi73 minVar 310.00 miMostly Cloudy70°F54°F57%1012.7 hPa
Tacoma, Tacoma Narrows Airport, WA11 mi73 minVar 510.00 miPartly Cloudy68°F54°F61%1012 hPa
Boeing Field - King County International Airport, WA12 mi73 minESE 410.00 miMostly Cloudy71°F54°F55%1012 hPa
Renton Municipal Airport, WA14 mi73 minN 65.00 miPartly Cloudy72°F55°F57%1012.3 hPa
Tacoma / McChord Air Force Base, WA17 mi2.1 hrsWSW 310.00 miOvercast69°F59°F73%1012.8 hPa
Bremerton, Bremerton National Airport, WA17 mi70 minVar 610.00 miOvercast72°F57°F59%1013.8 hPa
Fort Lewis / Gray U. S. Army Airfield, WA22 mi2.1 hrsSW 410.00 miOvercast69°F61°F76%1012.5 hPa
Pierce County-Thun Field, WA22 mi91 minN 010.00 miMostly Cloudy72°F57°F61%1012.5 hPa

Link to 5 minute data for KSEA

Wind History from SEA (wind in knots)
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Last 24hr4S5W7W6SW5SW5SW6SW7SW7SW5S5S5S4SW3SW4SW3CalmCalmSW33SW5533
1 day agoSW4S9SW9SW9SW7SW5S6SW4S5SW5SW4S4S3S3SW4CalmS4S3S3S5SW7S6S7S6
2 days agoSW8
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SW7SW7SW7S7S6SW4CalmSW5SW5SW7SW8SW9SW5S5S7S6S6S7SW7SW85S6W6

Tide / Current Tables for Burton, Quartermaster Harbor (inside), Washington
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Burton
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Sun -- 01:36 AM PDT     4.66 feet Low Tide
Sun -- 06:09 AM PDT     Sunrise
Sun -- 06:54 AM PDT     10.04 feet High Tide
Sun -- 09:09 AM PDT     Moonset
Sun -- 01:27 PM PDT     0.70 feet Low Tide
Sun -- 08:12 PM PDT     11.84 feet High Tide
Sun -- 08:16 PM PDT     Sunset
Sun -- 10:01 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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64.94.75.678.59.6109.58.16.2420.80.92.24.46.99.311.111.811.510.48.6

Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Sun -- 01:41 AM PDT     1.59 knots Max Flood
Sun -- 05:11 AM PDT     -0.00 knots Slack
Sun -- 06:10 AM PDT     Sunrise
Sun -- 08:09 AM PDT     -1.42 knots Max Ebb
Sun -- 09:09 AM PDT     Moonset
Sun -- 11:05 AM PDT     0.06 knots Slack
Sun -- 01:57 PM PDT     1.87 knots Max Flood
Sun -- 05:49 PM PDT     -0.05 knots Slack
Sun -- 08:16 PM PDT     Sunset
Sun -- 08:40 PM PDT     -1.43 knots Max Ebb
Sun -- 10:01 PM PDT     Moonrise
Sun -- 11:53 PM PDT     0.05 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.91.51.61.410.3-0.9-1.3-1.4-1.3-1-0.31.21.71.91.81.40.9-0.5-1.1-1.4-1.4-1.2-0.9

Weather Map and Satellite Images
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wmap_P
GOES 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 (17,4,5,8)
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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.