Friday, November24, 2017 L-36.com


Marine Weather and Tides
White Center, 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 7:26AMSunset 4:26PM Thursday November 23, 2017 11:13 PM PST (07:13 UTC) Moonrise 11:31AMMoonset 8:57PM Illumination 30% Phase: Waxing Crescent; Moon at 5 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- 843 Pm Pst Thu Nov 23 2017
.small craft advisory in effect until 4 am pst Friday...
Tonight..S wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of showers.
Fri..S wind 10 to 20 kt. Wind waves 1 to 3 ft. A chance of rain.
Fri night..S wind 15 to 25 kt easing to 10 to 20 kt after midnight. Wind waves 2 to 4 ft subsiding to 1 to 3 ft. A chance of rain.
Sat..SE wind 5 to 15 kt becoming N in the afternoon. Wind waves 2 ft or less.
Sat night..SE wind 5 to 15 kt becoming S 10 to 20 kt after midnight. Wind waves 1 to 3 ft.
Sun..S wind 15 to 25 kt easing to 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft subsiding to 1 to 3 ft.
Sun night..S wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Mon..Light wind becoming S to 10 kt. Wind waves 1 ft or less.
Tue..S wind to 10 kt. Wind waves 1 ft or less.
PZZ100 843 Pm Pst Thu Nov 23 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will decrease Friday morning. The next front will stall off vancouver island Friday with southerly winds increasing over the coastal waters Friday afternoon. A stronger system will impact the area on Saturday night into Sunday with gales possible.

7 Day Forecast for Marine Location Near White Center, WA
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location: 47.56, -122.35     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 240443
afdsew
area forecast discussion
national weather service seattle wa
840 pm pst Thu nov 23 2017

Synopsis An upper level trough crossing western washington will
maintain scattered showers tonight. A cold front will stall over
vancouver island Friday and Friday night, which will produce a
little light rain over mainly the north part of western
washington. Another frontal system is expected to bring more rain
later Saturday into Sunday morning. A large upper level trough
will cross the area Sunday night and Monday with scattered
showers. This active weather pattern should continue into mid
next week.

Short term Scattered showers tonight. The next front will be
stationary over vancouver island and bring some light rain to the
area Friday. The best chance of rain will be over the N part of w
wa, especially the coast and mountains. The rain will probably
reach a little farther S over W wa on Friday, then recede back
north a little Friday night as the flow aloft over the region
becomes more southwesterly. This rain will not be hydrologically
significant so it won't impact the current flooding.

A deepening large upper level trough well offshore will shift the
upper level flow over W wa back to a moist SW flow aloft. This
will allow a system embedded in the strong SW flow aloft to bring
widespread rain to the area Saturday afternoon through Sunday
morning. The GFS and ECMWF have been a little inconsistent lately
on the details, so how much rain falls and during what periods is
still a little uncertain. This period of rain could be a little
heavier but with the big break between wet systems it is unlikely
to cause renewed flooding, although there is always a chance that
the skokomish river will flood.

Snow levels will lower to 3500 to 4000 feet tonight through
Saturday, but precipitation over the cascade passes will be light
enough for snowfall to remain below advisory thresholds. Snow
levels will rise back to 5000-7000 feet Saturday night and Sunday
morning as that next system from the SW arrives.

Long term The GFS and ECMWF both agree that the large offshore
upper level trough will move E across W wa Sunday afternoon
through Monday. This will be a cool showery period. The models
still show a warm front reaching the area Monday night, but have
been inconsistent with this feature for the past several model
runs. So at this point the Tuesday-Thursday period still looks
like an active weather period, but confidence is low regarding how
it will evolve. Kam

Aviation Showers will mainly impact the coast and mountains
tonight as a trough axis moves east of the crest. The flow aloft is
westerly. Moderate onshore flow will give gusts to 20 kt in the
interior this evening. MVFR ceilings are possible tonight with low
level moisture in place. Drier weather is forecast on Friday as the
next front stalls over southern b.C. 33
ksea... MVFR conditions likely tonight with S wind 10-15 kt.

Scattered showers mainly in the mountains. 33

Marine Moderate onshore flow will continue tonight then ease
early Friday. The next front will stall over southern b.C. Friday
afternoon then dissipate. A stronger pacific system will impact the
region Saturday night into Sunday with gales possible over the
waters. The flow will ease Sunday night as a weaker system shifts
south into ca. 33

Hydrology Hydrologically significant rainfall appears to have
ended. Rivers that are flooding now are responding to rainfall over
the past three days, which was copious in the mountains. The north
cascades received 4-9 inches, the central and south cascades got
3-6 inches, and the olympic peninsula got 4-10 inches. Upstream
reaches of rivers are receding now, though some downstream reaches
have a way to go until they crest. A cooling trend is forecast--the
snow level was about 6000 feet this morning and will fall to around
4000 feet this afternoon.

Here is a summary of river flooding, from north to south:
the nooksack river at north cedarville fell below the moderate flood
stage this morning, and will fall below minor flood stage tonight.

The nooksack at ferndale is still rising and is forecast to have
minor flooding on Friday.

The skagit river is experiencing major flooding. At concrete, it
will remain a couple of feet above the major flood stage for a few
more hours this evening, then slowly recede through Friday. At mount
vernon the river is forecast to go above the major flood stage
tonight, then recede below flood stage Saturday.

Flooding has ended on the main fork of the stillaguamish river
and the flood warning has ended.

The skykomish river near gold bar rose above moderate flood stage
this afternoon and will fall below moderate flood stage this
evening. The snoqualmie river near snoqualmie falls and near
carnation will experience minor flooding tonight and Friday. The
tolt river crested below flood stage twice today. Further
downstream, moderate flooding is occurring or forecast on the
snohomish river.

In the southern part of the state, the white river near r street in
auburn and the nisqually river near national are having minor
flooding. The cowlitz river at randle will just touch the moderate
flood stage this evening. In the olympics, the satsop and skokomish
rivers will continue to have minor flooding.

A flood watch remains in effect through tonight, though the threat
of further flooding has receded.

For the current list of flood watches and warnings, please check:


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 8 mi74 min S 22 G 26 50°F 1013.6 hPa (+1.2)45°F
TCMW1 - 9446482 - Tacoma Met, WA 20 mi44 min S 5.1 G 8.9
TCNW1 - 9446484 - Tacoma, WA 21 mi44 min 48°F 51°F1015.5 hPa
46121 28 mi34 min 7.8 49°F 1014.4 hPa46°F
PTWW1 - 9444900 - Port Townsend, WA 44 mi44 min ESE 2.9 G 6 46°F 50°F1013.7 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, WA3 mi21 minS 910.00 miMostly Cloudy50°F45°F83%1014.7 hPa
Renton Municipal Airport, WA8 mi21 minSSE 810.00 miOvercast50°F46°F86%1015.4 hPa
Seattle, Seattle-Tacoma International Airport, WA9 mi21 minS 1310.00 miOvercast49°F44°F83%1015.3 hPa
Bremerton, Bremerton National Airport, WA23 mi18 minSSW 1110.00 miOvercast46°F44°F93%1016.1 hPa
Tacoma, Tacoma Narrows Airport, WA23 mi21 minS 1210.00 miOvercast47°F46°F97%1015.2 hPa
Everett Snohomish County, WA24 mi21 minSSE 1110.00 miMostly Cloudy47°F44°F90%1013.8 hPa

Wind History from BFI (wind in knots)
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Last 24hrW5
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1 day agoS4SE4S6S6CalmCalmSE3CalmCalmCalmSE3SE4S8SE12S736S10
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2 days agoCalmCalmCalmCalmCalmSW4CalmCalmN3N3CalmCalmCalmCalmCalm5SE7CalmS3SE5S8SE7SE4Calm

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Fri -- 02:08 AM PST     0.48 feet Low Tide
Fri -- 07:27 AM PST     Sunrise
Fri -- 09:31 AM PST     11.31 feet High Tide
Fri -- 12:07 PM PST     Moonrise
Fri -- 03:39 PM PST     6.30 feet Low Tide
Fri -- 04:23 PM PST     Sunset
Fri -- 07:46 PM PST     7.98 feet High Tide
Fri -- 09:56 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.41.10.50.92.34.36.68.710.411.211.210.69.68.37.16.46.36.77.37.887.66.75.4

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Fri -- 02:51 AM PST     0.00 knots Slack
Fri -- 05:29 AM PST     0.61 knots Max Flood
Fri -- 07:28 AM PST     Sunrise
Fri -- 09:32 AM PST     -0.00 knots Slack
Fri -- 12:07 PM PST     Moonrise
Fri -- 12:49 PM PST     -0.55 knots Max Ebb
Fri -- 04:24 PM PST     Sunset
Fri -- 06:14 PM PST     -0.02 knots Min Ebb
Fri -- 09:56 PM PST     Moonset
Fri -- 11:49 PM PST     -0.65 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-0.5-0.30.10.40.60.60.50.30.1-0.1-0.4-0.5-0.5-0.5-0.4-0.2-0.1-0-0-0.2-0.3-0.5-0.6

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 (2,6,7,8)
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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 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.