Tuesday, November20, 2018 L-36.com


Marine Weather and Tides
Cliffdell, WA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:12AMSunset 4:23PM Tuesday November 20, 2018 3:10 AM PST (11:10 UTC) Moonrise 3:36PMMoonset 4:00AM Illumination 93% Phase: Waxing Gibbous; Moon at 12 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- 254 Am Pst Tue Nov 20 2018
Today..S wind 10 kt or less. Wind waves 1 ft or less. Areas of morning fog.
Tonight..SE wind 10 kt or less. Wind waves 1 ft or less.
Wed..S wind 5 to 15 kt. Wind waves 2 ft or less. A chance of rain.
Wed night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..S wind rising to 15 to 25 kt. Wind waves building to 1 to 4 ft.
Thu night..S wind 15 to 25 kt. Wind waves 1 to 4 ft.
Fri..SW wind 15 to 25 kt. Wind waves 1 to 4 ft.
Sat..S wind 10 to 20 kt. Wind waves 3 ft or less.
PZZ100 254 Am Pst Tue Nov 20 2018
Synopsis for the northern and central washington coastal and inland waters..Higher pres E of the cascades with lower pres offshore will keep the flow mainly easterly today. A weak cold front extending from a 998 mb low will approach from the W tonight. This front will move across the washington coastal waters on Wednesday, and probably dissipate as it moves onshore. A stronger frontal system will impact the area on Thursday.


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 201045
afdpdt
area forecast discussion
national weather service pendleton or
245 am pst Tue nov 20 2018

Short term Today through Thursday night... High pressure aloft
will remain in control of the regional weather and the weather over
the forecast area through Tuesday night. There are strong surface
based inversions in place over the lower columbia basin and adjacent
valleys with areas of low clouds and fog covering most of the lower
columbia basin under the high pressure aloft. The fog has been
slowly expanding in coverage, reaching the blue mountain foothills
and portions of the yakima valley and the eastern columbia river
gorge. A weather system is forecast to move into the pacific
northwest by Wednesday afternoon and then continue with the weather
pattern becoming progressive with frequent weather systems beginning
Wednesday. This scenario will bring periods of rain and mountain
snow to the CWA beginning by Wednesday afternoon or evening and
continuing through the thanksgiving holiday into early Friday
morning. Snow levels will be rather high so only the higher
mountains and some mountain passes will receive some snow. It is
still too soon to consider highlights, but will introduce the
weather pattern change in the text product such as the area forecast
discussions, weather stories and perhaps special weather statements
for Wednesday night through early Friday morning. Before the pattern
change takes place, diurnal temperature changes under the inversions
will be small. However, the mountains will have greater diurnal
temperature changes. High temperatures will be cold under the
inversions and milder in the higher elevations, while night time
lows will be be warmer under the inversions and colder in the
mountains, especially the high mountain meadows and higher elevation
valleys. Air stagnation will persist in the lower columbia basin and
adjacent valleys through at least Wednesday mid day. May need to
consider a dense fog advisory for the lower columbia basin of oregon
and washington as well as the blue mountain foothills of washington.

Elsewhere, the fog just has not formed or become widespread enough
to warrant any dense fog advisories. Winds will be light through
Wednesday night and then will increase, mainly on the ridge tops
from Wednesday night onward as weather system move across the
region. 88

Long term Friday through Tuesday... Models and ensembles have come
into better agreement through Saturday night but begin diverging
from Sunday onward. On Friday a robust, moisture-laden short-wave
off the bc coast will drop southeast across the pacnw. The front
arriving Friday afternoon evening will bring rain in the lower
elevations and mountain snow with snow levels around 3500 to 4500
feet. Rain and snow could be moderate to heavy at times and the
higher passes could receive several inches of snow which will likely
impact holiday travel. Winds from the south pre-frontal turning west
post-frontal will also be breezy Friday Friday night. Late Friday
night into Saturday morning will see the system depart with precip
tapering off. Lingering mountain snow showers while valleys should
be mainly dry, but with the colder air behind the system, snow
levels will drop to 2500 to 3500 feet. Saturday and Saturday night
will see a brief ridge over the area for mainly dry conditions
though upslope north to northwest flow may keep light snow showers
in the mountains. Models try to slide a weak short-wave through the
pacnw on Sunday but differ greatly as to the strength and path it
will take. Have forecast a chance of rain with snow above 3500 feet
in the mountains and central oregon. Sunday night and Monday are
looking to be mainly dry as ridging looks to build back over the
pacnw. As the ridge shifts east, expect a return of more moist
southwesterly flow ahead of approaching trough towards the west
coast and a return of showers, however snow levels look to be around
5000 feet and higher. Seasonal temps expected with highs in the
upper 30s to 40s and lows in the 20s to lower 30s.

Aviation 12z tafs... Patchy fog stratus developing this morning in
the lower columbia basin and gorge with local ifr lifr conditions
possible, especially near kpdt, kalw and kpsc. CIGS vis should
improve by midday but some lingering stratus could remain near the
columbia river. Expect an increase in overall fog stratus coverage
tonight tomorrow morning with ifr or lower conditions possible at
all terminals. Light winds around 5kts or less expected through the
period.

Preliminary point temps pops
Pdt 39 27 44 35 0 0 10 40
alw 38 27 45 37 0 0 10 40
psc 36 25 39 32 0 0 10 30
ykm 41 26 40 29 0 0 30 40
hri 37 25 40 33 0 0 10 40
eln 44 28 42 28 0 0 40 60
rdm 54 28 53 31 0 0 40 40
lgd 47 31 46 34 0 0 10 50
gcd 51 33 49 35 0 0 20 40
dls 43 30 44 36 0 0 40 70

Pdt watches warnings advisories
Or... Air stagnation advisory until 1 pm pst Wednesday for orz041-044-
507-508-510-511.

Wa... Air stagnation advisory until 1 pm pst Wednesday for waz024-
026>029.

88 84 84


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 67 mi41 min 35°F 53°F1017.7 hPa
TCMW1 - 9446482 - Tacoma Met, WA 67 mi41 min E 1.9 G 2.9
EBSW1 - 9447130 - Seattle, WA 75 mi41 min S 1.9 G 2.9 40°F 52°F1017.3 hPa

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stampede Pass, WA26 mi75 minVar 510.00 miFair30°F24°F79%1021.6 hPa

Wind History from SMP (wind in knots)
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Last 24hr5556565554--3343--445--5545
1 day ago5444465E73E75455645445NE6665
2 days ago43CalmCalm4446545344545556E7664

Tide / Current Tables for Tacoma, Commencement Bay, Washington
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Tacoma
Click for Map
Tue -- 03:14 AM PST     9.77 feet High Tide
Tue -- 04:05 AM PST     Moonset
Tue -- 07:21 AM PST     Sunrise
Tue -- 08:36 AM PST     4.88 feet Low Tide
Tue -- 02:26 PM PST     11.67 feet High Tide
Tue -- 03:40 PM PST     Moonrise
Tue -- 04:29 PM PST     Sunset
Tue -- 09:20 PM PST     0.80 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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67.99.29.79.68.77.465.155.87.2910.611.611.510.58.86.441.90.91.12.3

Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Tue -- 03:12 AM PST     9.68 feet High Tide
Tue -- 04:05 AM PST     Moonset
Tue -- 07:21 AM PST     Sunrise
Tue -- 08:36 AM PST     4.88 feet Low Tide
Tue -- 02:24 PM PST     11.56 feet High Tide
Tue -- 03:39 PM PST     Moonrise
Tue -- 04:28 PM PST     Sunset
Tue -- 09:20 PM PST     0.80 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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67.89.19.79.58.67.36555.87.2910.611.511.410.48.66.33.91.90.91.12.3

Weather Map and Satellite Images
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wmap_P
GOES 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Pendleton, OR (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.