Saturday, December7, 2019
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Marine Weather and Tides
Skykomish, WA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:32AMSunset 4:12PM Saturday December 7, 2019 3:19 AM PST (11:19 UTC) Moonrise 2:18PMMoonset 2:31AM Illumination 80% Phase: Waxing Gibbous; Moon at 10 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- 235 Am Pst Sat Dec 7 2019
Today..S wind 5 to 15 kt becoming to 10 kt in the afternoon. Wind waves 2 ft or less. Rain likely in the morning then a chance of rain in the afternoon.
Tonight..N wind to 10 kt. Wind waves 1 ft or less. A chance of rain in the evening then a slight chance of rain after midnight.
Sun..NW wind to 10 kt in the morning becoming light. Wind waves 1 ft or less. Patchy fog in the morning.
Sun night..Light wind. Wind waves less than 1 ft.
Mon..SE wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Mon night..Light wind becoming se to 10 kt after midnight. Wind waves 1 ft or less.
Tue..S wind 5 to 15 kt. Wind waves 2 ft or less.
Wed..S wind to 10 kt rising to 10 to 20 kt. Wind waves 1 ft or less building to 1 to 3 ft.
PZZ100 235 Am Pst Sat Dec 7 2019
Synopsis for the northern and central washington coastal and inland waters..A weak front will move inland today with southeast flow easing. Weak low pressure tonight will give way to high pressure Sunday and Monday. Another front will cross the area Tuesday. A third stronger front will approach from the west on Wednesday.


7 Day Forecast for Marine Location Near Skykomish, WA
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location: 47.78, -121.05     debug


Area Discussion for - Spokane, WA
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FXUS66 KOTX 071001 AFDOTX

Area Forecast Discussion National Weather Service Spokane WA 201 AM PST Sat Dec 7 2019

SYNOPSIS. A storm system will move into the area today and bring widespread precipitation into tonight. Light to moderate snow accumulations are expected in the mountains with rain in the valleys and locally very light freezing rain. Drier weather is expected Monday and Tuesday followed by chances for rain and snow Wednesday and the end of the week.

DISCUSSION. Today through Sunday . A moist weather system will pass through the area today. Satellite indicates a deep upper low off the northwestern coast pumping a feed of moisture into the area from the south. Isentropic ascent over a weak mid level warm front will drive the bulk of the precipitation across the region today with an assist by orographic upslope into the northern and eastern mountains. Late this afternoon through tonight a split flow will form with the lower part of the incoming coastal trough focused well to the south . but a northern branch short wave adding some weak dynamic support and enhancing upslope flow into the Idaho panhandle tonight.

The current temperature field as rain develops this morning suggests the chance of freezing rain in the lower elevations of the deep basin is minimal . however the higher terrain of the Waterville Plateau may still be subject to patchy freezing rain early this morning. Otherwise valley/basin rain amounting to a few hundredths to a tenth of an inch in the deep basin to a quarter of an inch or so over the eastern basin and the valleys north and east of the basin looks likely before rain tapers off from west to east this afternoon.

The mountains ringing the basin will see generally moderate accumulations of snow . all of them through today but with the Cascades tapering off this afternoon while the Idaho Panhandle mountains continue to accumulate more snow due to orographic ascent through tonight. Hence the reason for the Winter Weather Advisory for the Shoshone County mountains above 4000 feet elevation with wintry conditions expected across Lookout Pass today and tonight.

By Sunday morning even these lingering snow showers will be decreasing as drier and moderately cooler Canadian continental air advects into the area in the wake of the northern branch shortwave passage. Sunday will be generally dry with clearing skies aloft . but with patchy morning fog . freezing fog and low clouds sloshing around the basin and given the gradient probably concentrated across the eastern basin and valleys. Fugazzi

Sunday Night through Friday: The ridge moves along the west coast Sunday night and will slowly move east through Tuesday. We will see patchy to areas of fog or freezing fog across the region, especially across NE WA and the N ID Panhandle. Wednesday the models are showing a wave move over the ridge. The GFS has finally come more in line with the EC and Canadian in producing just some light precipitation, mainly across the mountains. Previously it had a fairly significant amount of precipitation, which didn't make any sense. The ridge then fizzles out as a large low pressure system moves into the Gulf of Alaska and we transition to a more progressive west/southwest flow. We will see an increase in Pacific moisture moving into Oregon and northern CA. There are some differences in timing and strength of pieces of energy moving through the area, but it looks like a period of unsettled weather Thursday and Friday. Precipitation type will depend on time of day of occurrence. The mountains will see all snow, but the valleys will see a mix of rain or snow. Temperatures will be slightly above average with daytime temps in the mid 30s to lower 40s, and lows in the mid 20s to around freezing. /Nisbet

AVIATION. 06Z TAFS: A warm front moves in ahead a strong offshore low. Some fog will be found in advance of the precipitation this evening into the earl overnight. Precipitation is expected to develop from west to east, coming in to the vcnty of EAT/MWH at the start of the TAF period becoming more likely as the night progresses. The precipitation is expected to spread eastward after 08-12Z, impacting GEG-SFF-COE-PUW-LWS. Some MVFR/IFR conditions are expected, except near LWS where the risk is smaller. There is some risk of -FZRA/-SN in the vcnty of EAT/MWH through the night, but the risk is low. If any freezing rain develops at all it is accumulations of only traces to a hundreths of inch would occur. The first wave of precipitation decreases through the middle to late morning, but more showers are expected to develop toward later afternoon to evening. /Cote'

PRELIMINARY POINT TEMPS/POPS. Spokane 42 32 39 26 36 27 / 90 60 0 0 0 0 Coeur d'Alene 42 33 38 28 37 30 / 90 70 10 0 0 0 Pullman 45 35 40 30 40 28 / 70 50 20 0 0 0 Lewiston 48 38 44 33 43 30 / 50 50 30 0 0 0 Colville 42 29 41 21 38 22 / 90 20 0 0 0 0 Sandpoint 40 34 39 27 35 27 / 100 70 20 0 0 0 Kellogg 41 35 38 29 36 30 / 90 80 50 0 0 0 Moses Lake 42 29 43 26 39 26 / 60 20 0 0 0 0 Wenatchee 40 32 42 28 38 27 / 70 10 0 0 0 0 Omak 40 30 41 25 37 25 / 70 10 0 0 0 0

OTX WATCHES/WARNINGS/ADVISORIES. ID . Winter Weather Advisory from noon today to 10 AM PST Sunday above 4000 feet for Central Panhandle Mountains.

WA . None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 74 mi80 min S 12 G 13 47°F 1007.9 hPa (-0.8)46°F
TCMW1 - 9446482 - Tacoma Met, WA 80 mi56 min SE 5.1 G 6

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA37 mi84 minVar 30.50 miLight Snow Fog33°F30°F92%1009.2 hPa

Link to 5 minute data for KSMP

Wind History from SMP (wind in knots)
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Last 24hr444446555333Calm--5454543333
1 day ago33CalmCalm3Calm3434Calm3Calm3--3533534--4
2 days agoCalmCalm------CalmCalmCalmCalm----33CalmCalmS3CalmCalmCalmCalmCalmCalmCalmE4

Tide / Current Tables for Marysville, Quilceda Creek, Washington
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Marysville
Click for Map
Sat -- 02:09 AM PST     7.90 feet High Tide
Sat -- 02:36 AM PST     Moonset
Sat -- 07:29 AM PST     4.59 feet Low Tide
Sat -- 07:44 AM PST     Sunrise
Sat -- 01:23 PM PST     10.54 feet High Tide
Sat -- 02:22 PM PST     Moonrise
Sat -- 04:15 PM PST     Sunset
Sat -- 08:46 PM PST     1.76 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.67.57.97.77.16.25.24.74.75.46.78.39.710.510.49.78.46.64.6321.82.43.8

Tide / Current Tables for Everett, Washington
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Everett
Click for Map
Sat -- 02:00 AM PST     8.15 feet High Tide
Sat -- 02:36 AM PST     Moonset
Sat -- 06:59 AM PST     5.11 feet Low Tide
Sat -- 07:44 AM PST     Sunrise
Sat -- 01:14 PM PST     10.87 feet High Tide
Sat -- 02:22 PM PST     Moonrise
Sat -- 04:16 PM PST     Sunset
Sat -- 08:16 PM PST     1.96 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.27.98.27.97.26.25.45.15.46.37.79.110.310.810.79.78.26.24.22.722.23.24.7

Weather Map
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wmap_P
GEOS 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 Spokane, WA (6,6,7,8)
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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.