Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Seattle, WA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:22AMSunset 8:49PM Sunday May 20, 2018 6:16 PM PDT (01:16 UTC) Moonrise 9:50AMMoonset 12:15AM Illumination 36% Phase: Waxing Crescent; Moon at 6 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- 257 Pm Pdt Sun May 20 2018
Tonight..N wind to 10 kt becoming ne after midnight. Wind waves 1 ft or less.
Mon..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Mon night..N wind 5 to 15 kt becoming ne after midnight. Wind waves 2 ft or less.
Tue..N wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tue night..N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Wed..NW wind to 10 kt. Wind waves 1 ft or less.
Wed night..NW wind to 10 kt becoming S after midnight. Wind waves 1 ft or less.
Thu..S wind to 10 kt becoming n. Wind waves 1 ft or less.
Fri..N wind to 10 kt. Wind waves 1 ft or less.
PZZ100 257 Pm Pdt Sun May 20 2018
Synopsis for the northern and central washington coastal and inland waters..High pres offshore and lower pres east of the ascades will produce onshore flow for much of the forecast period. Winds will be strongest in the central and eastern strait of juan de fuca during the late afternoon and evening hours each day.

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 202136
afdsew
area forecast discussion
national weather service seattle wa
230 pm pdt Sun may 20 2018

Synopsis A weak upper level trough will dissipate over western
washington tonight. An upper level ridge will build over the area
Monday and Tuesday. The flow aloft will become southerly midweek--
bringing some moisture up from the south with a chance of showers in
the mountains.

Short term A trough is over the west coast--what is left of it
over western washington is dissipating. Lows will be in the mid 40s
to mid 50s with clouds and some partial clearing. An upper level
ridge will build into the area Monday and Tuesday with warmer temps
and sunshine. Highs Monday will be in the 60s to lower 70s. On
Tuesday highs will range from the mid to upper 60s along the coast
and near the water in the north, to the 70s elsewhere--and maybe
touching 80 in the warmest spots under sunny skies.

Long term There will be a chance of showers around the middle
of the week as the remnants of an upper trough kick out from
california and nevada. Another stronger upper trough could bring a
better chance of showers and cooler temps next weekend. The general
trend of the forecast showing the warmest temps Tuesday and
Wednesday fading through the weekend looks about right--although
a shallow marine push could make Wednesday cooler with a rebound on
Thursday, before falling off again late in the week as the trough
arrives and onshore flow develops.

Aviation An upper level trough axis along the coast will slowly
move inland overnight tonight with northwesterly flow aloft. The air
mass remains generally stable and will gradually dry at the mid and
upper levels... Although marine moisture will remain close to the
surface.

Cigs still a mix ofVFR to MVFR conditions... Although pae remains
the lone station still in ifr conditions. With lifting cigs
elsewhere... Remain hopeful that pae will rebound by late in the
afternoon. As has been the pattern... MVFR conditions expected to
redevelop overnight as continued low level onshore flow brings some
low level marine cloudiness into the interior of western washington.

Ksea...VFR CIGS will persist through the afternoon and into the
evening. MVFR ceilings will likely redevelop after midnight tonight
as stratus pushes into the interior from the coast. Southwest winds
5 to 10 knots this afternoon will make a gradual shift toward the
northwest after 00z this evening. Smr

Marine High pressure offshore and lower pressure east of the
cascades will result in generally weak onshore flow for much of the
forecast period. Small craft advisory westerlies are likely in the
central and eastern strait of juan de fuca during the diurnal peak
late afternoon through early morning hours most days. As has been
the pattern... Inherited headline covers this expectation for tonight
and into Monday morning. Mcdonnal smr

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 3 pm this afternoon to 3 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
WPOW1 - West Point, WA 2 mi76 min NNE 11 G 13 56°F 1017.5 hPa (-0.9)51°F
46120 6 mi42 min NW 9.7 56°F 1017 hPa52°F
EBSW1 - 9447130 - Seattle, WA 7 mi46 min NW 2.9 G 9.9 62°F 52°F1017.2 hPa
46125 19 mi48 min 9.7 54°F 1017.2 hPa50°F
TCMW1 - 9446482 - Tacoma Met, WA 28 mi46 min E 4.1 G 6
TCNW1 - 9446484 - Tacoma, WA 29 mi46 min 67°F 51°F1016.9 hPa
46121 32 mi41 min 60°F 1016.8 hPa50°F
PTWW1 - 9444900 - Port Townsend, WA 35 mi46 min WSW 7 G 13 57°F 51°F1018.5 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 mi23 minNNW 510.00 miMostly Cloudy64°F50°F60%1016.6 hPa
Renton Municipal Airport, WA16 mi23 minNNW 410.00 miOvercast65°F48°F56%1017 hPa
Everett Snohomish County, WA17 mi23 minNW 710.00 miMostly Cloudy59°F48°F69%1017.7 hPa
Seattle, Seattle-Tacoma International Airport, WA17 mi23 minSSW 710.00 miMostly Cloudy66°F50°F56%1017.3 hPa
Bremerton, Bremerton National Airport, WA24 mi20 minNNE 710.00 miOvercast61°F53°F75%1018.8 hPa

Wind History from BFI (wind in knots)
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Last 24hrNW54CalmCalmCalmSW4S5S5SE4S6S7S4S6S6S5S5S53S4SW3Calm3N5NW5
1 day ago3CalmCalmCalmNW4W3CalmNW3NW5N4NW3CalmCalmCalmCalmNW33NW34344NE4N6
2 days agoSW4SW5W5CalmW3W4W4SW3CalmSW4SW3W3W4CalmS3CalmS3W34CalmCalm45SW3

Tide / Current Tables for Meadow Point, Shilshole Bay, Washington
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Meadow Point
Click for Map
Sun -- 01:14 AM PDT     Moonset
Sun -- 03:42 AM PDT     6.43 feet Low Tide
Sun -- 05:25 AM PDT     Sunrise
Sun -- 08:24 AM PDT     9.36 feet High Tide
Sun -- 10:50 AM PDT     Moonrise
Sun -- 03:31 PM PDT     -1.34 feet Low Tide
Sun -- 08:47 PM PDT     Sunset
Sun -- 11:05 PM PDT     11.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.69.17.66.66.577.88.79.39.28.36.64.42.10.1-1.2-1.202.14.87.59.811.311.9

Tide / Current Tables for Alki Point, 0.3 miles W of, Washington Current
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Alki Point
Click for Map
Sun -- 12:47 AM PDT     -0.46 knots Max Ebb
Sun -- 01:14 AM PDT     Moonset
Sun -- 04:42 AM PDT     0.00 knots Slack
Sun -- 05:26 AM PDT     Sunrise
Sun -- 06:08 AM PDT     0.16 knots Max Flood
Sun -- 08:10 AM PDT     -0.00 knots Slack
Sun -- 10:50 AM PDT     Moonrise
Sun -- 12:11 PM PDT     -0.63 knots Max Ebb
Sun -- 03:53 PM PDT     0.01 knots Slack
Sun -- 07:02 PM PDT     0.82 knots Max Flood
Sun -- 08:47 PM PDT     Sunset
Sun -- 11:00 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.5-0.4-0.3-0.10.10.20.10-0.1-0.4-0.5-0.6-0.6-0.5-0.20.10.40.70.80.80.60.3-0

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.
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Wind Forecast for Seattle, WA (21,6,7,8)
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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.