Sunday, December15, 2019
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Marine Weather and Tides
Cliffdell, 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 7:39AMSunset 4:15PM Sunday December 15, 2019 11:09 AM PST (19:09 UTC) Moonrise 8:09PMMoonset 10:50AM Illumination 83% Phase: Waning Gibbous; Moon at 19 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- 834 Am Pst Sun Dec 15 2019
Today..SW wind to 10 kt. Wind waves 1 ft or less. Patchy fog in the morning. A chance of showers in the morning.
Tonight..S wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..S wind 10 to 20 kt. Wind waves 1 to 3 ft. A slight chance of rain in the morning then a chance of rain in the afternoon.
Mon night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Tue..S wind 5 to 15 kt. Wind waves 2 ft or less.
Tue night..SE wind 5 to 15 kt becoming S to 10 kt after midnight. Wind waves 2 ft or less.
Wed..S wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..S wind to 10 kt. Wind waves 1 ft or less.
PZZ100 834 Am Pst Sun Dec 15 2019
Synopsis for the northern and central washington coastal and inland waters..A warm front will brush the area on Monday. A series of frontal systems will move through the area over the second half of the week.


7 Day Forecast for Marine Location Near Cliffdell, WA
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location: 46.92, -121.24     debug


Area Discussion for - Pendleton, OR
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FXUS66 KPDT 151726 AAA AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 930 AM PST Sun Dec 15 2019

Updated Aviation Discussion

SHORT TERM. Current freezing fog advisories in effect for the Kittitas and Yakima Valleys, the OR side of the Lower Columbia Basin, and the Blue Mtn Foothills are set to expire at 10 AM. This looks reasonable based on the improvement in visibility on web cams, but there will be patchy fog with visibilities less than one mile in these areas through early to mid afternoon. A shortwave is sliding south across far eastern WA and northeast OR, bringing scattered snow showers from the Blue Mountains east to the Idaho border. Snow accumulations of 1-3 inches can be expected today, mainly along the far northern Blues. There have been a few orographic snow showers along the WA Cascades, including along I-90 over Snoqualmie. The mountain snow showers today do not favor any winter highlights but will be covered in NOWcasts and social media posts, if needed.

High pressure aloft will return tonight with the likelihood of fog and stratus redeveloping. Additional fog advisories may be needed for portions of the Lower Columbia Basin and surrounding valleys. Fog will become more widespread Monday night and Tuesday morning, but a prolonged air stagnation is not expected as the upper flow increases from the southwest on Wednesday with better potential for mixing. Wister

PREV DISCUSSION. /issued 335 AM PST Sun Dec 15 2019/

LONG TERM . Wednesday through Sunday . A weakening low pressure system will arrive Wednesday afternoon with increasing rain and snow across the region. QPF with this first system likely remains under a tenth of an inch. Snow levels as this first system moves through will range from 500-1000 feet over parts of the Washington Cascades and Wallowa Mountains to near 3000 feet over central Oregon with only minor snow accumulations possible.

Better chances for more widespread, impactful rain and mountain snow arrive Thursday afternoon and continue through Saturday morning. With a relatively mild and persistent southwest flow, snow levels expected to increase between 4500-5500 feet across Oregon and southeast Washington. For the Washington Cascades snow levels are expected to remain between 2000-3000 feet, where winter weather highlights may be needed. Models also hinting at the potential for cold air to remain trapped across lower elevations of the Kittitas/Yakima Valleys and portions of the lower Columbia Basin in Washington. With subfreezing temperatures in these areas overnight Thursday night and again Friday night, areas of light freezing rain will be possible.

By Sunday the upper level trough begins to weaken and shift south and east of the area. This will allow for a drying trend to end the weekend; however, slight chances for precipitation will remain for the Cascades and higher elevations of central and northeast Oregon. Richards

AVIATION . 18z tafs. IFR Fog and snow showers at ALW/PDT will see improvements to MVFR after 21z. Areas of fog with IFR cigs at PSC/YKM will also see improvement during the afternoon. VFR at other sites through period. Fog may once again develop overnight and impact KALW/KYKM/KPDT/KPSC where ifr/lifr conditions will once again be possible. Winds expected to remain light through the period. 93

PRELIMINARY POINT TEMPS/POPS. PDT 36 26 35 24 / 10 10 0 0 ALW 35 29 35 26 / 20 10 0 0 PSC 39 29 36 25 / 10 0 0 0 YKM 39 24 35 22 / 0 0 0 0 HRI 38 29 36 25 / 10 0 0 0 ELN 34 26 33 21 / 10 0 10 0 RDM 39 20 42 23 / 0 0 0 0 LGD 37 24 36 26 / 20 20 0 0 GCD 36 20 38 25 / 10 10 0 0 DLS 43 32 39 29 / 0 10 0 0

PDT WATCHES/WARNINGS/ADVISORIES. OR . Freezing Fog Advisory until 10 AM PST this morning for ORZ044- 507.

WA . Freezing Fog Advisory until 10 AM PST this morning for WAZ026- 027-029.



85/93/93


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 67 mi63 min SE 5.1 G 6
TCNW1 - 9446484 - Tacoma, WA 67 mi63 min 42°F 51°F1023.4 hPa

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA26 mi3.2 hrsVar 40.25 miLight Snow Freezing Fog29°F25°F85%1017.7 hPa

Link to 5 minute data for KSMP

Wind History from SMP (wind in knots)
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Last 24hrCalmCalmCalmCalm33Calm3CalmCalm33CalmCalm3333554SW544
1 day ago6W534--3CalmCalm4Calm434Calm45333CalmCalmCalm34
2 days ago----------CalmCalmCalm3W7
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SW85635CalmCalm34454

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Sun -- 12:29 AM PST     -2.11 feet Low Tide
Sun -- 07:49 AM PST     Sunrise
Sun -- 07:56 AM PST     13.17 feet High Tide
Sun -- 10:56 AM PST     Moonset
Sun -- 01:29 PM PST     7.36 feet Low Tide
Sun -- 04:18 PM PST     Sunset
Sun -- 05:55 PM PST     10.57 feet High Tide
Sun -- 08:11 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.9-1.9-0.42.25.48.611.112.713.212.711.49.98.47.57.58.29.310.210.610.18.66.53.91.4

Tide / Current Tables for Tacoma, Commencement Bay, Washington
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Tacoma
Click for Map
Sun -- 12:29 AM PST     -2.11 feet Low Tide
Sun -- 07:49 AM PST     Sunrise
Sun -- 07:58 AM PST     13.29 feet High Tide
Sun -- 10:55 AM PST     Moonset
Sun -- 01:29 PM PST     7.36 feet Low Tide
Sun -- 04:19 PM PST     Sunset
Sun -- 05:57 PM PST     10.67 feet High Tide
Sun -- 08:12 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.9-1.9-0.42.25.48.611.212.813.312.811.69.98.47.57.58.39.310.310.710.28.76.641.5

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 Pendleton, OR (14,3,4,5)
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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.