Friday, December15, 2017 L-36.com


Marine Weather and Tides
Cliffdell, 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 7:40AMSunset 4:15PM Friday December 15, 2017 7:12 PM PST (03:12 UTC) Moonrise 5:01AMMoonset 3:10PM Illumination 5% Phase: Waning Crescent; Moon at 27 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 Pst Fri Dec 15 2017
Tonight..S wind 5 to 15 kt, except N wind from seattle northward during the evening. Wind waves 2 ft or less. A chance of showers in the evening then a slight chance of showers after midnight.
Sat..S wind to 10 kt. Wind waves 1 ft or less. A chance of rain.
Sat night..S wind 5 to 15 kt rising to 15 to 25 kt after midnight. Wind waves 2 ft or less building to 2 to 4 ft after midnight. A chance of rain in the evening then rain likely after midnight.
Sun..S wind 15 to 25 kt easing to 10 to 20 kt in the afternoon. Wind waves 1 to 4 ft.
Sun night..S wind 5 to 15 kt becoming sw after midnight. Wind waves 2 ft or less.
Mon..S wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Mon night..Light wind becoming S to 10 kt after midnight. Wind waves 1 ft or less.
Tue..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Wed..SW wind to 10 kt becoming light. Wind waves 1 ft or less.
PZZ100 300 Pm Pst Fri Dec 15 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will bring small craft winds to the coastal waters and strait of juan de fuca much of tonight. A lull in winds are expected most of Saturday. The next warm front will move through the waters Saturday night and Sunday. A deepening low will track inland near or to the north of western washington on Tuesday.

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 160121
afdpdt
area forecast discussion
national weather service pendleton or
521 pm pst Fri dec 15 2017

Update The latest radar was showing the pcpn from earlier
pushing east with drier conditions moving into the region from
the west. Thus the winter weather advisory was cancelled and the
forecast updated to remove this. No other changes expected at this
moment.

Prev discussion issued 325 pm pst Fri dec 15 2017
short term... Tonight and Saturday... The latest pacific cold front
continues to move across the area late this afternoon. The front and
main precip band currently runs from near spokane south-southwest to
the blue mountain foothills, then to central oregon. A mix of
freezing rain, snow and sleet has been accompanying this front. The
precip has largely ended over the lower columbia basin zones, and
have cancelled the winter weather advisory for those zones. Will
continue the winter weather advisory for the eastern blue mountain
foothills zones until 7 pm, though these advisories may be eligible
for lowering prior to that time. Snow levels have been rising
slightly behind the front, but cold air advection should increase
this evening to lower the snow levels to near the basin floor
overnight. This cold air advection, plus increasing winds and
mixing, should eliminate the remaining weakened inversions over the
area. Flow into the interior mountains will keep some showers going
through the night into Saturday morning over these mountains and
along adjacent foothills. Also should see showers continue along and
near the cascade crest tonight and Saturday. 90
Saturday night through Sunday... A series of weak waves will move
through an offshore upper level ridge Saturday night and Sunday.

This will weaken the ridge with time. These waves will keep mostly
cloudy skies with rain and snow along the cascades Saturday night
and Sunday. Light snow may develop in the northeast or mountains
Sunday. Coonfield
long term... Sunday night through Wednesday night... A broad dirty
upper level ridge will slowly move across wa and or Sunday night
through Tuesday. The series of weak waves will continue to flow over
the ridge with varying amounts of rain and mountain snow. Rain
shadowing will limit precipitation to light rain at most in the
lower columbia basin, yakima valley, and kittitas valley. A rain
snow mix is possible in north central or and central or during this
time. Tuesday night an upper trough will move from the gulf of
alaska to the wa and or coast. This will bring cooler air with a
better chance of rain and mountain snow Tuesday night through
Wednesday night. Coonfield
Thursday through Friday... ECMWF gfs canadian models coming into
better agreement with mid upper level ridging building across the
eastern pacific, and a trough digging across the four
corners rockies region. Dry conditions can be expected area wide
with generally light winds as surface high pressure will reside
nearly overhead. There are still some model differences, but the
trend is to produce more of a northerly flow, versus a NE flow
regime previously depicted. A cooldown is still expected, but the
most frigid air will remain east of the area. Expect high
temperatures in the 30s for the lower elevations, with upper teens
to mid 20s for lows. 80
aviation... 0z tafs... MVFR and ifr conditions will be possible at
all TAF sites as a front moves out of the area this evening. There
will be some rain or snow at kpdt and kalw early this evening. This
system will help to mix out the low clouds and fog... But stratus
expected to redevelop tonight. Drier air will move into the area
tomorrow. Winds will be light except at kdls. 76

Preliminary point temps pops
Pdt 29 39 31 42 50 20 0 10
alw 31 41 33 43 60 20 0 20
psc 30 42 33 41 10 10 0 10
ykm 27 41 28 39 0 0 10 20
hri 29 41 32 42 10 10 0 10
eln 28 39 29 37 10 10 10 30
rdm 22 38 24 44 20 10 10 10
lgd 29 35 25 38 60 20 0 20
gcd 28 37 25 39 50 20 0 20
dls 36 45 36 43 10 10 20 20

Pdt watches warnings advisories
Or... None.

Wa... None.

97


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 67 mi42 min 42°F 50°F1024 hPa
TCMW1 - 9446482 - Tacoma Met, WA 67 mi42 min SE 4.1 G 5.1
EBSW1 - 9447130 - Seattle, WA 75 mi42 min SSE 2.9 G 4.1 44°F 50°F1023.8 hPa

Wind History for Tacoma MET, WA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA26 mi76 minSW 73.00 miLight Snow Fog/Mist30°F30°F100%1020.3 hPa

Wind History from SMP (wind in knots)
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Last 24hr5NE6NE75NE5NE5NE5NE5NE3CalmSW3SW4SW6------4W55SW8
G19
SW8SW7SW75
1 day ago--------N76N7N5N7N8N76
G15
66646456--465
2 days ago6NE6NE8NE4N4E4NE3NE5NE54NE4N4NE4N4N4N4N3N4------------

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Fri -- 04:08 AM PST     10.88 feet High Tide
Fri -- 05:06 AM PST     Moonrise
Fri -- 07:50 AM PST     Sunrise
Fri -- 09:09 AM PST     6.51 feet Low Tide
Fri -- 02:26 PM PST     11.30 feet High Tide
Fri -- 03:13 PM PST     Moonset
Fri -- 04:18 PM PST     Sunset
Fri -- 09:37 PM PST     -0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.67910.310.910.69.58.176.56.87.79.110.411.211.210.38.66.23.61.30-0.10.9

Tide / Current Tables for Tacoma, Commencement Bay, Sitcum Waterway, Puget Sound, Washington (sub)
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Tacoma
Click for Map
Fri -- 04:13 AM PST     10.96 feet High Tide
Fri -- 05:06 AM PST     Moonrise
Fri -- 07:50 AM PST     Sunrise
Fri -- 09:13 AM PST     6.58 feet Low Tide
Fri -- 02:25 PM PST     11.61 feet High Tide
Fri -- 03:13 PM PST     Moonset
Fri -- 04:19 PM PST     Sunset
Fri -- 09:28 PM PST     -0.44 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.87.29.110.410.910.79.78.37.26.66.87.89.210.711.511.510.58.66.13.31-0.3-0.31

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 Pendleton, OR (22,6,7,8)
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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.