Friday, October20, 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 7:27AMSunset 6:05PM Friday October 20, 2017 11:05 AM PDT (18:05 UTC) Moonrise 7:14AMMoonset 6:05PM Illumination 0% Phase: New Moon; Moon at 0 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- 851 Am Pdt Fri Oct 20 2017
.small craft advisory in effect from 11 am pdt this morning through this evening...
Today..S wind 5 to 15 kt becoming sw 15 to 25 kt in the afternoon. Wind waves 2 ft or less building to 2 to 4 ft in the afternoon. Showers likely in the morning then showers in the afternoon.
Tonight..SW wind 15 to 25 kt becoming S 10 to 20 kt after midnight. Wind waves 2 to 4 ft. Showers likely.
Sat..SE wind 10 to 20 kt becoming 5 to 15 kt in the afternoon. Wind waves 1 to 3 ft. Rain.
Sat night..S wind 20 to 30 kt becoming sw 15 to 25 kt after midnight. Wind waves 3 to 5 ft.
Sun..S wind 15 to 25 kt becoming sw 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft.
Sun night..SW wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Mon..Light wind. Wind waves less than 1 ft.
Tue..N wind to 10 kt becoming light. Wind waves 1 ft or less.
PZZ100 851 Am Pdt Fri Oct 20 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will prevail today. A vigorous pacific frontal system will move through the area Saturday and Sunday, with southeast gales possible over the coastal waters and some of the inland waters of western washington on Saturday. Weak offshore flow will develop Monday.

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 201602
afdpdt
area forecast discussion
national weather service pendleton or
902 am pdt Fri oct 20 2017

Short term Today through Saturday... A cold front is exiting the
forecast area this morning with the upper level trough set to move
over the area today. This will lead to some showers around the area
mainly over the mountains coming to an end by this evening. Will
also see increasing westerly winds today becoming 15 to 25 mph with
higher gusts then decreasing overnight. The upper level trough exits
to the east overnight and a warm front will approach from the west
arriving into the cascades and central oregon by early Saturday
morning before sunrise. The front will spread precipitation eastward
through the morning covering the entire forecast area by late
morning. Initially snow levels will be around 4000 feet and then
rise during the afternoon and evening. There will be enough time for
accumulations to occur in the mountains before snow levels rise so
have issued winter weather advisories for snow for this event. Will
also see increasing southerly winds Saturday following the warm
front and may need to issue some highlights for this but will
further evaluate and consider for the afternoon forecast package.

Aviation 18z tafs. MainlyVFR conditions will prevail.

Sct-bkn ceilings 050-070kft with showers mainly over the mountains.

Winds increasing to 15-30 kts late morning and should continue until
around midnight. A warm front will be pushing into area between 6-
9z with ceilings lowering and light rain spreading from west to east
through the day Saturday. 93

Prev discussion issued 430 am pdt Fri oct 20 2017
short term... Today through Sunday afternoon... An upper level
trough is sweeping across the region this morning and pushing a
cold front through the eastern oregon mountains. Westerly winds
aloft on the western flank of the trough will yield downslope
winds east of the cascades with rain showers tapering off and
ending this afternoon in central north central oregon and the
kittitas and yakima valleys. Upslope orographic lift will keep
scattered showers on the blue mountains into this evening. The
next system is a warm front that brings rain into central oregon
and the east slopes of the wa cascades overnight. The rain will
spread east across the forecast area during the day on Saturday
for rainfall amounts of 0.25-0.35 inches at lower elevations and
around 0.40-0.50 inches in the mountains. Saturday night through
Sunday the warm front moves slowly northward and provides
additional precipitation. Polan
long term... Sunday night through Thursday... Sunday night moist
westerly flow will transition to drier northwest flow as an upper
level ridge begins to develop offshore and move inland. Rain will
taper off Sunday night and early Monday. The upper level ridge will
slowly shift east over wa and or Monday through Tuesday evening.

Subsidence from the ridge will bring dry conditions and warmer
daytime temperatures to the area. Tuesday night light winds and
clear skies will provide good radiational cooling. Patchy late night
and early morning is possible in the columbia basin. Early Wednesday
the ridge flattens as a short wave and fast moving front moves
through wa and or. The front will bring a chance of precipitation
and breezy to windy conditions to the cwa. The upper level ridge
will rebuild offshore with a dry northerly flow over eastern wa and
or Thursday. Coonfield
aviation... 12z tafs... Ceilings will be scattered to broken above
5000 feet agl with showers in the mountains though TAF sites should
remain dry with the possible exceptions of showers near kalw, kpdt
krdm and kbdn. Winds 5-15 kt increasing to 15-30 kts late morning.

Another front will lower CIGS again after 6-9z. 76

Preliminary point temps pops
Pdt 58 41 58 50 30 10 100 60
alw 60 44 57 50 30 20 100 90
psc 62 43 57 51 10 10 90 50
ykm 59 37 52 43 10 10 100 50
hri 61 42 58 50 10 10 90 30
eln 56 36 48 40 20 10 100 80
rdm 51 36 57 44 20 70 90 20
lgd 51 38 46 43 50 30 100 80
gcd 50 36 50 46 50 30 100 50
dls 60 43 56 52 20 50 100 50

Pdt watches warnings advisories
Or... Winter weather advisory from 5 am to 5 pm pdt Saturday for
orz503-506.

Winter weather advisory from 5 am to 11 pm pdt Saturday for
orz502.

Winter weather advisory from 8 am to 11 pm pdt Saturday for
orz050.

Wa... Winter weather advisory from 5 am to 11 pm pdt Saturday for
waz030.

91 93 93


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 67 mi54 min 49°F 54°F1007.2 hPa
TCMW1 - 9446482 - Tacoma Met, WA 67 mi48 min ESE 6 G 8
EBSW1 - 9447130 - Seattle, WA 75 mi48 min S 8 G 13 49°F 54°F1006.5 hPa

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA26 mi70 minSW 72.50 miLight Snow Fog/Mist33°F33°F100%1005.4 hPa

Wind History from SMP (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalm3Calm346
G17
3SW86SW7S9
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SW74SW7SW7SW9
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1 day ago3Calm543E443Calm45
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444CalmSW12
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SW853Calm3CalmCalmCalm
2 days agoSW9
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5653CalmCalmCalmCalmCalmNE3CalmCalmCalmCalmCalmCalm33

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Fri -- 06:28 AM PDT     11.19 feet High Tide
Fri -- 07:35 AM PDT     Sunrise
Fri -- 08:19 AM PDT     Moonrise
Fri -- 12:09 PM PDT     3.94 feet Low Tide
Fri -- 05:51 PM PDT     11.19 feet High Tide
Fri -- 06:11 PM PDT     Sunset
Fri -- 07:08 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.61.43.25.68.110.111.111.110.18.46.34.73.94.35.77.59.410.811.210.58.96.641.7

Tide / Current Tables for Tacoma, Commencement Bay, Sitcum Waterway, Puget Sound, Washington (sub)
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Tacoma
Click for Map
Fri -- 06:21 AM PDT     11.23 feet High Tide
Fri -- 07:35 AM PDT     Sunrise
Fri -- 08:19 AM PDT     Moonrise
Fri -- 12:04 PM PDT     4.00 feet Low Tide
Fri -- 05:45 PM PDT     11.41 feet High Tide
Fri -- 06:12 PM PDT     Sunset
Fri -- 07:09 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.41.33.35.98.410.311.211108.36.34.744.55.97.89.811.111.410.68.86.43.61.3

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 (14,3,4,5)
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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.