Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Marblemount, 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 6:10AMSunset 8:13PM Sunday August 20, 2017 6:00 PM PDT (01:00 UTC) Moonrise 3:44AMMoonset 6:42PM Illumination 2% Phase: Waning Crescent; Moon at 28 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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PZZ133 Northern Inland Waters Including The San Juan Islands- 240 Pm Pdt Sun Aug 20 2017
Tonight..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..SW wind to 10 kt becoming nw in the afternoon. Wind waves 1 ft or less. Patchy fog in the morning.
Mon night..W wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less.
Tue..Light wind becoming sw to 10 kt in the afternoon. Wind waves 1 ft or less.
Tue night..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Wed..S wind 5 to 15 kt. Wind waves 2 ft or less.
Wed night..SW wind 10 to 20 kt becoming W 5 to 15 kt after midnight. Wind waves 1 to 3 ft.
Thu..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Fri..W wind to 10 kt. Wind waves 1 ft or less.
PZZ100 240 Pm Pdt Sun Aug 20 2017
Synopsis for the northern and central washington coastal and inland waters..A typical august pattern will prevail through late next week. Expect onshore flow of varying strength to persist due to high pres offshore and lower pres east of the cascades. A weak system will approach the coastal waters on Wednesday and move inland Thursday.

7 Day Forecast for Marine Location Near Marblemount, WA
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location: 48.54, -121.44     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 202116
afdsew
area forecast discussion
national weather service seattle wa
216 pm pdt Sun aug 20 2017

Synopsis High pressure will build into the region tonight
giving dry conditions. Areas of low clouds and patchy fog will
develop over the coastal zones and near the water below about 500
feet in the interior Monday morning; the clouds and fog will
dissipate late in the morning leading to sunny skies and warm
conditions. Dry and warm conditions will continue on Tuesday. An
upper trough will bring clouds, a chance of showers, and cooler
temperatures later Wednesday through Thursday. Dry and warmer
weather will return to the area Friday and continue through next
weekend.

Short term Models are generally showing good model and run-to-
run consistency today. The afternoon forecast package will
generally be a blend between the previous forecast and the
consensus of the latest solutions.

High clouds have been streaming east-southeastward
across the area today. The high level moisture will decrease this
evening as a building upper level ridge offshore moves toward the
area. Good radiational cooling tonight will allow temperatures to
fall into the upper 40s to mid 50s across the area, with the
colder values in the south interior and in normally colder
outlying areas.

The problem of the day continues to be the potential for shallow
fog and low cloud development in the interior Monday morning.

Short term meso-scale models all show some degree of low cloud
or fog formation late tonight on the coast and near the inland
bodies of water and up to about 300-500 feet elevation. The wrf
arw and nam3 solutions are deepest and most expansive of the
models while other mesoscale solutions show shallower and slightly
less expansive cloud cover. Models all show the clouds dissipating
between 16z and 17z, around the start of the solar eclipse, but
only the hrrr has eclipse solar forcing included at this time and
is only out to 13z. We will continue to fine-tune the cloud and
fog forecast for Monday morning. At this time, the best bet for
viewing the eclipse locally will be away from the sound and away
from i-5 in the south interior.

The offshore upper upper ridge will move across the area Monday
afternoon and evening then move well east into western montana
Tuesday afternoon. Tuesday high temperatures in the interior from
about seattle southward will peak in the lower 80s.

After another dry and warm day on Tuesday, onshore pressure
gradients will increase by early Tuesday evening commencing a
marine push. Clouds will increase overnight and Wednesday may end
up being a rather cloudy day across the region.

An offshore frontal system, associated with an incoming trough
that will move across the area on Thursday will spread isolated
to scattered light showers across the area late Wednesday
afternoon or Wednesday night. Albrecht

Long term An upper level trough will swing eastward across the
area Wednesday night through Thursday evening bringing clouds,
some shower activity, and cooler conditions. Thursday may be the
first day in several weeks where seattle fails to reach 70
degrees. As of today, seatac airport has reached 70 degrees or
higher for 53 consecutive days. The record is 62 days set in 2013.

While many locations will see some precipitation on Thursday,
amounts are going to be rather light with heavier amounts in the
northern cascades.

Extended model solutions show a ridge developing over the area
Friday through Sunday of next week for dry and warming conditions.

The models have backed off somewhat, however, in the strength of
the ridge and associated offshore flow. For now, we will continue
to indicate 80s across much of the area by next Sunday. Albrecht

Aviation Northwest flow aloft continues over western
washington this afternoon, ahead of an upper ridge off the pacific
northwest coast. The flow will back to westerly midday Monday as
the ridge moves inland. At the surface, onshore flow will
continue with high pressure offshore and lower pressure east of
the cascades. The air mass is dry except for moisture in a
shallow, surface-based marine layer, mainly at the coast.

At 2 pm, there is patchy marine stratus on the north coast and in
the strait of juan de fuca that has yet to burn off. Otherwise
there is no significant cloud cover below 12,000 ft. Coastal
stratus with ifr ceilings will return tonight and move inland
through the strait of juan de fuca and the chehalis gap, probably
reaching parts of the western washington interior lowlands
overnight. The terminals in the puget sound region could have
sct-bkn006 cloud cover roughly 13z-16z Monday. The stratus should
dissipate mid to late morning.

Ksea... Northwest wind 5-10 kt veering to northeast after sunset
and easing overnight, then northwest 6-12 kt again Monday. There
is a good chance of some low stratus reaching ksea Monday morning
with sct-bkn003 roughly 13z-16z. Mcdonnal

Marine A typical august pattern will prevail through late next
week. Expect onshore flow of varying strength to persist due to
high pressure offshore and lower pressure east of the cascades.

Small craft advisory west winds are likely in the central and
eastern strait of juan de fuca each night from evening through
early morning, although gale westerlies are possible Tuesday night
or Wednesday night as an upper trough approaches the region. The
trough will move inland Thursday. Mcdonnal

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 6 pm this evening to 5 am pdt Monday
for central u.S. Waters strait of juan de fuca-east
entrance u.S. Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PBFW1 - Padilla Bay Reserve, WA 55 mi90 min W 8 71°F 1020 hPa52°F
CHYW1 - 9449424 - Cherry Point, WA 73 mi42 min SSE 2.9 G 6 62°F 55°F1018.3 hPa
PTWW1 - 9444900 - Port Townsend, WA 76 mi48 min WSW 12 G 19 66°F 54°F1020.4 hPa

Wind History for Cherry Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Arlington Municipal Airport, WA46 mi64 minW 12 G 1510.00 miFair73°F54°F51%1020.4 hPa

Wind History from AWO (wind in knots)
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Last 24hrNW9NW9NW8NW6NW4NW6NW6N5N5N6N6N3NW3NE4NE6N6NW76Calm5W9SW66W12
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1 day agoW9NW5NW3N6NW7N6NW3NW4NW4W6N4CalmCalmCalmCalmNW3CalmCalmN5NW7N7NW8W11NW10
2 days agoW8NW9NW8NW5NW4CalmNW4N5CalmN4N4NE4NW3CalmCalm3CalmS4SW4N54NW9NW8NW9

Tide / Current Tables for Marysville, Quilceda Creek, Washington
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Marysville
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Sun -- 03:39 AM PDT     10.36 feet High Tide
Sun -- 04:48 AM PDT     Moonrise
Sun -- 06:10 AM PDT     Sunrise
Sun -- 10:50 AM PDT     -1.67 feet Low Tide
Sun -- 05:46 PM PDT     10.97 feet High Tide
Sun -- 07:43 PM PDT     Moonset
Sun -- 08:12 PM PDT     Sunset
Sun -- 11:39 PM PDT     4.59 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.87.28.910.110.39.57.95.630.5-1.2-1.6-0.61.64.47.39.510.71110.49.17.45.84.8

Tide / Current Tables for Stanwood, Washington
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Stanwood
Click for Map
Sun -- 12:28 AM PDT     1.71 feet Low Tide
Sun -- 03:46 AM PDT     6.67 feet High Tide
Sun -- 04:49 AM PDT     Moonrise
Sun -- 06:11 AM PDT     Sunrise
Sun -- 12:40 PM PDT     -0.51 feet Low Tide
Sun -- 06:01 PM PDT     7.31 feet High Tide
Sun -- 07:44 PM PDT     Moonset
Sun -- 08:13 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.823.866.76.45.84.93.72.51.20.2-0.4-0.40.72.85.16.77.37.16.45.342.8

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 Seattle, WA (21,6,7,8)
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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.