Friday, May26, 2017 L-36.com


Marine Weather and Tides
Black Diamond, WA

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:16AMSunset 8:53PM Friday May 26, 2017 5:25 PM PDT (00:25 UTC) Moonrise 5:31AMMoonset 8:57PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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- 300 Pm Pdt Fri May 26 2017
Tonight..N wind to 10 kt becoming ne after midnight. Wind waves 1 ft or less.
Sat..N wind to 10 kt. Wind waves 1 ft or less.
Sat night..N wind to 10 kt. Wind waves 1 ft or less.
Sun..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Sun night..N wind to 10 kt. Wind waves 1 ft or less.
Mon..SW wind to 10 kt becoming variable in the afternoon. Wind waves 1 ft or less.
Mon night..NW wind 5 to 15 kt becoming S to 10 kt after midnight. Wind waves 2 ft or less.
Tue..Light wind becoming sw to 10 kt. Wind waves 1 ft or less.
Wed..S wind to 10 kt. Wind waves 1 ft or less.
PZZ100 300 Pm Pdt Fri May 26 2017
Synopsis for the northern and central washington coastal and inland waters..High pressure offshore and lower pressure inland will result in light onshore flow through Monday. Expect the onshore flow to strengthen late Monday or Tuesday for the possibility of gale force winds over parts of the strait of juan de fuca.

7 Day Forecast for Marine Location Near Black Diamond, WA
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location: 47.3, -122     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 262237 cca
afdsew
area forecast discussion... Corrected
national weather service seattle wa
306 pm pdt Fri may 26 2017
corrected the 2nd paragraph in the long term section regarding the
marine push.

Synopsis A strong upper level ridge will remain over the
pacific northwest through the memorial day weekend, with sunny
skies and afternoon high temperatures well above normal.

Increasing onshore flow will finally cool temperatures a little
toward mid next week. Moist south flow aloft could bring a few
sprinkles to the area from Monday onward.

Short term Afternoon visible satellite imagery shows clear
skies over the W wa lowlands with just scattered cumulus clouds
over the mountains.

The strong upper level ridge centered offshore along 130w will
move slowly inland over W wa on Saturday and will continue to
build slowly through Sunday. The ridge will slide slowly E over e
wa Sunday afternoon but won't make it over W mt until Tuesday
night.

With the ridge in place high temperatures will be well above
normal, in the mid 70s to mid 80s, but not within realistic reach
of record highs. This is probably because weak onshore flow will
continue along the coast and offshore flow never really cranks up
over the interior.

The GFS show some weak w-sw onshore flow Sunday night and Monday
night which could bring a shallow marine air mass part way inland,
but it will probably have little effect on inland temperatures.

The ecwmf is not as strong with this minor onshore flow.

Once the ridge axis moves over E wa on Sunday, the flow aloft will
switch to ssw over W wa. Isolated convection could develop along or
e of the cascade crest Sunday and Monday afternoon per the gfs. The
other models are much weaker with this. In addition, areas of mid
and high level moisture will move up over the area from oregon and n
ca from Monday onward. This could cut back a little on warming on
Monday.

The current forecast has Sunday as the warmest day with highs in
the 70s to mid 80s. Monday may be a little cooler due to the weak
low level onshore flow and the minor increase in clouds over the
area. However, confidence is low, and Monday could easily be the
warmer day. Kam

Long term The GFS shows a larger batch of clouds moving up
over the area on Tuesday, enough to have a slight chance of
showers in the forecast. The combination of the cloud cover, the
ridge sliding e, and another minor shot of onshore flow could drop
Tuesday's highs back into the 70s.

With the ridge axis finally shifting over W mt Tuesday night and
an upper level shortwave trough approaching the coast, models are in
reasonable agreement that Tuesday afternoon will probably be the day
when the main marine push is triggered. This should spread a cooler
marine air mass across the interior with widespread low clouds on
Wednesday. Highs should drop back to the mid 60s to near 70 which is
just slightly above normal.

An upper level trough will remain over the area Thursday and
Friday for normal weather. There could be some light showers at
times from a passing shortwave trough. Kam

Aviation A ridge of high pressure centered just offshore will
shift eastward directly over washington on Saturday. Light northerly
flow aloft becoming southerly Saturday afternoon. Weak low level
onshore flow.VFR skies, except isolated ifr stratus or fog near the
coast late tonight early Sunday morning.

Ksea...VFR skies. Northwesterly winds 4-7 kt, becoming northeast 3-5
kt by midnight. Dtm

Marine Light onshore flow with lower pressure east of the
cascades and surface high pressure offshore. Diurnal westerly winds
may reach up to 20 to 25 kt this evening in the central eastern
strait before easing. Slightly stronger onshore flow may develop by
Sunday with more solid small craft winds possible in the strait. Dtm

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 6 pm this evening to midnight pdt
tonight 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
TCNW1 - 9446484 - Tacoma, WA 22 mi38 min 74°F 52°F1014.2 hPa
TCMW1 - 9446482 - Tacoma Met, WA 22 mi38 min W 6 G 7
EBSW1 - 9447130 - Seattle, WA 28 mi38 min WNW 8.9 G 9.9 73°F 51°F1014.1 hPa
WPOW1 - West Point, WA 34 mi26 min NNE 4.1 G 5.1 65°F 1014.3 hPa (-0.3)51°F
46120 38 mi36 min N 9.7 67°F 1013.6 hPa47°F
46121 39 mi1 min 5.8 66°F 1013.1 hPa57°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton, Renton Municipal Airport, WA18 mi33 minNNW 710.00 miFair77°F53°F43%1014.2 hPa
Seattle, Seattle-Tacoma International Airport, WA19 mi33 minNW 810.00 miA Few Clouds79°F46°F31%1014.8 hPa
Pierce County-Thun Field, WA20 mi31 minW 410.00 mi79°F46°F32%1014.6 hPa
Seattle, Seattle Boeing Field, WA22 mi33 minVar 610.00 miA Few Clouds78°F48°F36%1013.9 hPa

Wind History from RNT (wind in knots)
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Last 24hrNW7NW8NW7NW5NW5CalmNW4CalmCalmCalmS3CalmCalmCalmCalmN4NW4NW5NW6NW6NW7NW10NW7NW7
1 day agoN4NW7NW5CalmCalmCalmCalmCalmSE3SE3SE3S3SE5SE4CalmCalmNW5NW4NW4NW7NW9NW9NW11NW6
2 days agoNW8
G14
CalmNW9N7443N5E5SE4S6SE4E4E3SE74SE8SE3SW8NW4N4NW6N6NW7

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Fri -- 04:59 AM PDT     12.04 feet High Tide
Fri -- 05:20 AM PDT     Sunrise
Fri -- 06:32 AM PDT     Moonrise
Fri -- 12:07 PM PDT     -3.07 feet Low Tide
Fri -- 07:15 PM PDT     12.61 feet High Tide
Fri -- 08:52 PM PDT     Sunset
Fri -- 09:58 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.66.48.19.911.41211.49.66.93.70.5-2-3.1-2.4-0.22.96.49.511.712.612.311.19.37.4

Tide / Current Tables for Tacoma, Commencement Bay, Sitcum Waterway, Puget Sound, Washington (sub)
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Tacoma
Click for Map
Fri -- 05:03 AM PDT     12.29 feet High Tide
Fri -- 05:21 AM PDT     Sunrise
Fri -- 06:33 AM PDT     Moonrise
Fri -- 12:00 PM PDT     -3.22 feet Low Tide
Fri -- 07:09 PM PDT     12.55 feet High Tide
Fri -- 08:52 PM PDT     Sunset
Fri -- 09:58 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.66.48.11011.612.311.79.973.60.3-2.3-3.2-2.30.13.56.99.911.812.512.2119.27.4

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Seattle, WA (20,4,5,8)
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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 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.