Saturday, November17, 2018 L-36.com


Marine Weather and Tides
Marietta-Alderwood, 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 7:21AMSunset 4:28PM Saturday November 17, 2018 7:23 PM PST (03:23 UTC) Moonrise 2:30PMMoonset 12:47AM Illumination 76% Phase: Waxing Gibbous; Moon at 10 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- 245 Pm Pst Sat Nov 17 2018
Tonight..N wind 5 to 15 kt. Wind waves 2 ft or less. Patchy fog after midnight.
Sun..N wind to 10 kt. Wind waves 1 ft or less. Areas of fog in the morning.
Sun night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less. Patchy fog after midnight.
Mon..E wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Mon night..NE wind to 10 kt becoming E after midnight. Wind waves 1 ft or less.
Tue..E wind 5 to 15 kt in the morning becoming light. Wind waves 2 ft or less.
Tue night..E wind to 10 kt becoming se 10 to 20 kt after midnight. Wind waves 1 ft or less building to 1 to 3 ft after midnight.
Wed..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..SE wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 245 Pm Pst Sat Nov 17 2018
Synopsis for the northern and central washington coastal and inland waters..Offshore flow will prevail through early next week with high pressure east of the cascades. The next frontal system will approach the region on Tuesday then split and weaken as it moves inland on Wednesday.


7 Day Forecast for Marine Location Near Marietta-Alderwood, WA
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location: 48.76, -122.7     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 180028
afdsew
area forecast discussion
national weather service seattle wa
330 pm pst Sat nov 17 2018

Synopsis High pressure aloft will maintain the cool dry weather
pattern through Tuesday. Areas of night and morning fog or freezing
fog will give way to afternoon sunshine. A series of weather systems
will bring wet weather by the middle of next week through the
holiday weekend.

Short term An upper level ridge centered along 130w will shift
directly over the pacific northwest through Tuesday. Dry weather will
persist along with some patchy fog night and morning fog or freezing
fog in prone sheltered valleys. The northerly pdx-bli gradient
peaked close to -5.7 mb but winds have remained below 20 mph so far.

Expect locally breezy winds to ease tonight as surface high pressure
shifts east of the cascades, creates easterly flow. The sea-eat
gradient may reach -10 mb so there could be some brief localized gap
winds, but gusts to 30 or 35 mph will likely remain near the pass
summits.

The upper ridge finally shifts inland by Tuesday allowing deep
southerly flow to develop over the west coast. This flow direction
could allow wildfire smoke from ca to lift north again into
oregon western wa. This potential for a brief smoke intrusion
around Tuesday of next week could cause some hazy conditions with
worsening air quality for roughly 24 hours. A front on Wednesday
should create a lot of mixing and should improve air quality issues
if any arise.

Long term Models indicate a pronounced pattern change by around
Wednesday of next week, through the holiday weekend. A series of
stronger systems will bring rain at times to the region, but the
progressive flow and pronounced split will likely reduce rainfall
amounts. See the hydrology section below for details. Temperatures
will cool slightly by next Friday and Saturday, but not far off the
average for this time of year. Highs mostly upper 40s to low 50s
with lows in the 30s to around 40. Mercer

Aviation High pressure and offshore flow will lead to dry and
stable conditions across western wa. The flow aloft is northerly
with E NE winds at the surface. Skies are clear but may see
patchy shallow fog near the sound early Sunday morning. Otherwise,
expectVFR conditions. 33
ksea... N NE winds to 8-12kt. Dry conditions tonight. Patchy low
clouds may form near the sound Sunday morning but will be shallow
and short-lived. 33

Marine Offshore flow will prevail across western wa through
early next week due to strong high pressure east of the cascades.

Winds are N NE over the waters with small craft advisories in
effect, specifically for the west entrance and adjacent coastal
waters. Winds will ease this evening. The next frontal system
will approach the region on Tuesday then split and weaken as it
moves inland on Wednesday. 33

Hydrology Dry weather is likely to persist through Tuesday. A
series of fronts will bring rain at times beginning around the
middle of next week. The progressive flow pattern and split stream
will tend to weaken systems more than models will pick up on. It
still looks rather wet with light rain and breezy conditions.

However, 24 hour rain amounts appear to light to cause river
flooding. The skokomish river is the exception, with 12z runs
wetter over the olympics with a lot more flow which would favor
heavier rain on the southwest slopes. The skokomish river is not
forecast to flood, but there is a slight risk it could flood by the
end of next week. Mercer

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 10 pm pst this evening for coastal
waters from CAPE flattery to james island out 10 nm-west
entrance u.S. Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46118 7 mi89 min 45°F 1025 hPa37°F
CHYW1 - 9449424 - Cherry Point, WA 8 mi36 min 1025.9 hPa
CPMW1 8 mi36 min N 5.1 G 6 49°F
FRDW1 - 9449880 - Friday Harbor, WA 22 mi48 min N 2.9 G 7 44°F 50°F1025.4 hPa
PBFW1 - Padilla Bay Reserve, WA 24 mi54 min NNE 5.1 42°F 1025 hPa35°F
SISW1 - Smith Island, WA 31 mi34 min NNW 7 G 8 47°F 1025.3 hPa (-0.6)37°F
46088 - New Dungeness, WA (Hein Bank) 38 mi34 min N 9.7 G 9.7 47°F 49°F1025.4 hPa (+0.0)39°F
PTWW1 - 9444900 - Port Townsend, WA 45 mi36 min WSW 6 G 7 50°F1026 hPa

Wind History for Cherry Point South Dock, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bellingham, Bellingham International Airport, WA9 mi31 minN 310.00 miFair37°F30°F79%1026.4 hPa
Eastsound, Orcas Island Airport, WA11 mi29 minN 610.00 miFair46°F41°F82%1025.7 hPa
Friday Harbor Airport, WA24 mi31 minVar 310.00 miFair43°F37°F80%1025.8 hPa

Wind History from BLI (wind in knots)
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Last 24hrN13N9N13N11
G17
N12N10N9N9N7N5N7CalmNE3NE4NE5N8N9N8NE9N10N5NW4NW3N3
1 day agoS15
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S6S10S653SE3CalmW3CalmN3CalmN6N8N12
G19
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N9N10N8N10
2 days agoS9
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S6S9S8S5S4S5S8S8SE9S6S5S7S7
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G18

Tide / Current Tables for Point Migley, Washington
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Point Migley
Click for Map
Sat -- 12:47 AM PST     Moonset
Sat -- 05:35 AM PST     2.47 feet Low Tide
Sat -- 07:22 AM PST     Sunrise
Sat -- 01:18 PM PST     8.47 feet High Tide
Sat -- 02:30 PM PST     Moonrise
Sat -- 04:28 PM PST     Sunset
Sat -- 08:00 PM PST     3.37 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.14.94.43.732.62.52.93.84.96.17.288.48.37.76.65.44.33.63.43.644.6

Tide / Current Tables for Clark Island, 1.6 mile North of, Washington Current
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Clark Island
Click for MapFlood direction 335 true
Ebb direction 150 true

Sat -- 12:47 AM PST     Moonset
Sat -- 03:51 AM PST     -0.66 knots Max Ebb
Sat -- 07:23 AM PST     Sunrise
Sat -- 07:51 AM PST     0.00 knots Slack
Sat -- 10:47 AM PST     0.68 knots Max Flood
Sat -- 02:02 PM PST     -0.00 knots Slack
Sat -- 02:30 PM PST     Moonrise
Sat -- 04:28 PM PST     Sunset
Sat -- 05:06 PM PST     -1.07 knots Max Ebb
Sat -- 10:53 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.3-0.5-0.6-0.7-0.6-0.4-0.200.30.60.70.50.30-0.4-0.8-1.1-1-0.9-0.7-0.4-0.10

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 Seattle, WA (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.