Tuesday, September26, 2017 L-36.com


Marine Weather and Tides
Mirrormont, WA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 7:00AMSunset 6:57PM Tuesday September 26, 2017 4:06 AM PDT (11:06 UTC) Moonrise 12:29PMMoonset 9:53PM Illumination 33% 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- 245 Am Pdt Tue Sep 26 2017
Today..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Tonight..N wind to 10 kt. Wind waves 1 ft or less.
Wed..N wind to 10 kt. Wind waves 1 ft or less.
Wed night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Thu..Light wind. Wind waves less than 1 ft.
Thu night..Light wind becoming S to 10 kt after midnight. Wind waves 1 ft or less.
Fri..SW wind 10 to 20 kt. Wind waves 1 to 3 ft.
Sat..NW wind to 10 kt becoming light. Wind waves 1 ft or less.
PZZ100 245 Am Pdt Tue Sep 26 2017
Synopsis for the northern and central washington coastal and inland waters..The flow will become light northerly today due to building pres over british columbia and lowering pres over oregon. A thermally induced trough of low pres along the washington coast will cause the flow to become easterly early Wednesday. Onshore flow will return on Friday as a cold front moves inland.

7 Day Forecast for Marine Location Near Mirrormont, WA
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location: 47.47, -122     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 261010
afdsew
area forecast discussion
national weather service seattle wa
310 am pdt Tue sep 26 2017

Synopsis A strong ridge of high pressure aloft combined with
developing low-level offshore flow will give warming and drying
to the area today through Thursday. Weather will become cool and
unsettled Friday onward as a cold front moves across the area and
an upper level trough settles into the region.

Short term Satellite imagery shows abundant cloud cover along
the coast and over the southern portions of the interior while
breaks in the clouds are seen over the interior from about the
seattle area northward. Some patches of fog have formed over the
coastal zones and in the area that has cleared over the interior.

The lower levels of the atmosphere will rapidly dry out later
today as a sharp upper level ridge over the offshore waters shifts
gradually eastward into the area and surface high pressure
offshore builds into southern british columbia inducing low level
offshore flow. Temperatures with increasing sunshine this
afternoon will rise into the mid 60s to mid 70s, quite nice for
the end of september.

While offshore flow continues to slowly ramp up tonight into early
Wednesday, good diurnal cooling and moisture trapped below an
increasingly shallow inversion should result in some patchy fog
again on Wednesday morning. Most of the fog will be seen over
typically foggy river valleys and around the strait of juan de
fuca. Any fog that does develop will rapidly burn off late in the
morning leaving a dry, sunny, and warm day across the area with
highs getting well into the 70s across the area. Some lower 80s
are possible through the chehalis gap and in the interior from
about shelton and olympia southward.

Thursday promises to be the warmest day of the upcoming warm spell
as the upper ridge shifts off to the east and offshore flow
continues. Most locations in the interior will see temperatures
rise into the upper 70s to mid 80s for what will likely be the
last day of summer-like weather for the year. Enjoy this last gasp
of summer! Albrecht

Long term Onshore flow ahead of a frontal system will increase
Thursday night. Then a weak front will move across the area on
Friday giving a chance of some light rain to the area, mainly over
the olympic peninsula. With the increase in moisture and the rapid
decrease in insolation this time of year, maximum temperatures
were cooled to a few degrees below normal starting Friday.

Forecast models are generally consistent for Saturday showing an
upper trough moving across the area giving showers.

The ECMWF and canadian model ensemble means, as well as a number
of GFS ensemble members show general upper troughing continuing
over the pacific northwest Sunday through at least the middle of
next week, while the 00z GFS operational solution shows
northwesterly flow aloft and drier conditions overall starting on
Sunday. The forecast for Sunday onward will lean in the direction
of the wetter and cooler ensemble means and operational ECMWF per
guidance and discussions issued by the weather prediction center
in college park md. Albrecht

Aviation An upper level ridge will shift inland today for dry
and stable weather. The low level air mass will remain moist with
areas of low clouds and fog - lifr to MVFR ceilings possible this
morning. The air mass will dry out this afternoon forVFR
conditions. Skies will clear tonight with a return of fog and or
low clouds near the surface. 33
ksea... Light variable wind becoming northerly by 15-18z. MVFR
cigs possible early this morning with moist low levels.VFR
conditions expected this afternoon. 33

Marine The flow will turn northerly today then offshore on
Wednesday as a thermal trough forms along the coast. Onshore flow
will increase on Friday as a cold front moves inland. Onshore flow
will persist through the weekend. 33

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EBSW1 - 9447130 - Seattle, WA 20 mi49 min WNW 1 G 1 58°F 55°F1021.2 hPa
TCNW1 - 9446484 - Tacoma, WA 26 mi55 min 58°F 56°F1021.1 hPa
TCMW1 - 9446482 - Tacoma Met, WA 26 mi49 min WSW 1 G 1.9
WPOW1 - West Point, WA 27 mi67 min N 4.1 G 4.1 56°F 1021.2 hPa (+0.7)54°F
46120 29 mi194 min SSW 3.9 60°F 1019.8 hPa54°F
46121 41 mi191 min 1.9 58°F 1019.8 hPa57°F

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA12 mi74 minN 010.00 miFair56°F55°F97%1021.3 hPa
Boeing Field - King County International Airport, WA16 mi74 minN 010.00 miFair58°F54°F87%1020.7 hPa
Seattle, Seattle-Tacoma International Airport, WA17 mi74 minN 010.00 miA Few Clouds58°F54°F87%1021.5 hPa

Wind History from RNT (wind in knots)
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Last 24hrS3CalmSE3CalmSE3SE3SE4SE6S7S5354S3CalmSW3CalmCalmCalmCalmCalmCalmS3Calm
1 day agoCalmCalmS3SE3E3SE4CalmN5N3N4NW8NW5NW5NW7NW5CalmCalmCalmS3E3CalmSE4CalmS4
2 days ago--CalmE3CalmCalmSE333SW3SE4Calm3--W4N5NW4CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Tue -- 03:44 AM PDT     1.23 feet Low Tide
Tue -- 07:01 AM PDT     Sunrise
Tue -- 10:43 AM PDT     9.43 feet High Tide
Tue -- 01:30 PM PDT     Moonrise
Tue -- 04:18 PM PDT     5.67 feet Low Tide
Tue -- 06:58 PM PDT     Sunset
Tue -- 09:24 PM PDT     8.76 feet High Tide
Tue -- 10:54 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
64.22.61.51.323.45.16.98.49.39.498.27.16.25.75.86.57.38.28.78.78

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Tue -- 12:43 AM PDT     -0.77 knots Max Ebb
Tue -- 04:43 AM PDT     0.00 knots Slack
Tue -- 06:56 AM PDT     0.46 knots Max Flood
Tue -- 07:02 AM PDT     Sunrise
Tue -- 10:39 AM PDT     -0.00 knots Slack
Tue -- 01:31 PM PDT     Moonrise
Tue -- 01:47 PM PDT     -0.46 knots Max Ebb
Tue -- 05:41 PM PDT     0.00 knots Slack
Tue -- 06:45 PM PDT     0.13 knots Max Flood
Tue -- 06:58 PM PDT     Sunset
Tue -- 09:00 PM PDT     -0.00 knots Slack
Tue -- 10:54 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-0.8-0.7-0.5-0.20.10.40.50.40.30.1-0.1-0.3-0.4-0.5-0.4-0.3-0.10.10.10.10-0.2-0.4

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 (7,2,3,4)
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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.