Thursday, June21, 2018 L-36.com


Marine Weather and Tides
Marietta-Alderwood, WA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:05AMSunset 9:18PM Thursday June 21, 2018 7:17 AM PDT (14:17 UTC) Moonrise 1:39PMMoonset 1:01AM Illumination 57% Phase: First Quarter Moon; Moon at 8 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- 222 Am Pdt Thu Jun 21 2018
Today..SW wind 10 to 20 kt becoming 5 to 15 kt in the afternoon. Wind waves 1 to 3 ft.
Tonight..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Fri..SW wind 5 to 15 kt. Wind waves 2 ft or less. A slight chance of showers.
Fri night..SW wind 10 to 20 kt. Wind waves 1 to 3 ft.
Sat..SW wind 10 to 20 kt easing to 10 kt in the afternoon. Wind waves 1 to 3 ft subsiding to 1 ft or less in the afternoon.
Sat night..SW wind 10 to 20 kt. Wind waves 1 to 3 ft.
Sun..SW wind 5 to 15 kt rising to 10 to 20 kt. Wind waves 1 to 3 ft.
Mon..SW wind 10 to 20 kt. Wind waves 1 to 3 ft.
PZZ100 222 Am Pdt Thu Jun 21 2018
Synopsis for the northern and central washington coastal and inland waters..Gale force westerlies are again likely in the strait of juan de fuca this evening. Onshore flow will continue into the weekend--with a westerly push in the strait of juan de fuca each evening through the weekend.

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 211033
afdsew
area forecast discussion
national weather service seattle wa
333 am pdt Thu jun 21 2018

Synopsis Moist marine air pushed inland overnight, but the
clouds should give way to a partly to mostly sunny but cooler
afternoon across western washington. Onshore flow will continue
Friday, and an upper trough will bring a chance of showers. An
upper ridge will cross the area this weekend for sunny warmer
weather, followed by another upper trough early next week.

Short term Strong onshore flow developed Wednesday evening, and
cool moist marine air has been pushing inland overnight. By 2 am,
much of western washington was covered by marine stratus with
overcast ceilings generally between 800 and 1800 ft; the only area
remaining uncovered by the clouds was the interior from around
everett northward, but it should be a matter of time there. One of
the more dramatic signs of the marine push is the westerly gale at
race rocks (on the canadian side of the central strait of juan de
fuca) where the wind was sustained 49 mph gusting to 59 mph at
2 am. Early morning temperatures were in the 50s to lower 60s.

A small, weak upper trough over the offshore waters will weaken
further and be shunted northward today, as a minor upper ridge
builds over the pacific northwest. At low levels moderately strong
onshore flow will continue, and the air mass will remain fairly
moist in the lowest 5000 ft or so. The day will start cloudy in
most places, but the strength of the summer solstice Sun should
bring some clearing in the afternoon. For most of the interior
lowlands, the forecast will be cloudy in the morning then
becoming partly sunny. It will be considerably cooler with highs
in the 60s at the coast and in the upper 60s to 70s inland. There
could be patchy drizzle at the coast and not much afternoon
clearing, and there could be some showers in the olympics and
north cascades.

With moderately strong onshore flow continuing tonight, marine
stratus should again start covering western washington during the
night. Another and somewhat sharper upper trough will move into
the forecast area Friday and east of the cascades late in the day.

The result of that should be less clearing, as the moist layer
deepens somewhat during the day. There will probably be some
morning drizzle at the coast and some mountain showers, especially
later in the day into the evening. A weak puget sound convergence
zone will likely develop late in the day as well. Friday will be
cooler yet, with highs in the lower to mid 60s at the coast and
the mid 60s to lower 70s inland.

Northwest flow aloft will prevail Friday night and Saturday as an
upper trough builds over the offshore waters, moving eastward and
reaching the pacific northwest coast Saturday afternoon. There
should be considerable cloud cover Saturday morning -- and maybe
some residual spotty showers -- but the air mass will dry and the
afternoon should be mostly sunny, with highs in the 60s at the
coast and upper 60s to 70s inland. Mcdonnal

Long term The upper ridge will shift east of the cascades
Saturday night or Sunday for a sunny and warmer day, with highs in
the 70s to lower 80s over much of the interior lowlands; an
exception to this is the north coast, where the leading edge of
the next system might arrive in the afternoon. A cold front will
move across western washington Sunday night, followed by an upper
trough on Monday. The upper trough will probably keep a chance of
showers over parts of western washington into Tuesday, with
another small upper ridge arriving on Wednesday. Mcdonnal

Aviation Upper level trough moving through the area this
morning with southwesterly flow aloft becoming westerly. Low level
onshore flow continuing into Friday. Air mass stable with low
level moisture.

Ceilings in the 1000-1500 foot range with isolated ceilings
below 1000 feet from about whidbey island southward and along the
coast early this morning. The stratus will spread north reaching
kbli 12z-14z. Ceilings slowly improving after 16z to 1500-2000 feet.

Lower cloud layer scattering out over the interior 20-22z with just
mid high level moisture late afternoon into the evening hours.

MVFR ceilings will continue along the coast. The stratus will
spread back into the interior late Thursday evening early Friday
morning with ceilings in the 1000-2000 foot range by 09z-12z
Friday.

Ksea... Ceilings around 1000 feet rising to near 1500 feet 16z and
to near 2000 feet around 19z. Stratus layer scattering out 20z-
22z with mid level moisture. Ceilings lowering back down to near
1500 feet around 07z. South southwesterly wind 5 to 10 knots.

Felton

Marine Onshore flow will continue. The westerly 40kt gales in the
strait of juan de fuca early this morning will ease today, but then
pick up again this evening. There should be a pretty good push of
westerlies in the strait each evening for the next several days--
probably 20-30kt.

Sew watches warnings advisories
Wa... None.

Pz... Gale warning until 3 am pdt Friday 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
46118 7 mi83 min SSW 18 56°F 1016.5 hPa54°F
CHYW1 - 9449424 - Cherry Point, WA 8 mi48 min SSE 9.9 G 16 57°F 1016.7 hPa
CPMW1 8 mi54 min SSE 17 G 22 56°F 56°F
FRDW1 - 9449880 - Friday Harbor, WA 22 mi48 min SW 13 G 19 55°F 52°F1017.1 hPa
PBFW1 - Padilla Bay Reserve, WA 24 mi48 min S 1 56°F 1018 hPa54°F
SISW1 - Smith Island, WA 31 mi28 min W 8.9 G 11 54°F 1018.1 hPa (+1.5)51°F
46088 - New Dungeness, WA (Hein Bank) 38 mi58 min SSW 12 G 16 53°F 51°F3 ft1017.7 hPa52°F
PTWW1 - 9444900 - Port Townsend, WA 45 mi54 min WNW 2.9 G 2.9 55°F 51°F1018.6 hPa

Wind History for Cherry Point South Dock, WA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bellingham, Bellingham International Airport, WA9 mi25 minSSE 1110.00 miLight Rain57°F53°F87%1017.7 hPa
Eastsound, Orcas Island Airport, WA11 mi23 minSSE 10 G 1710.00 miOvercast57°F53°F88%1016.6 hPa
Friday Harbor Airport, WA24 mi25 minS 1310.00 miOvercast58°F51°F78%1017.8 hPa

Wind History from BLI (wind in knots)
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Last 24hrCalmCalmCalmS53SW4SW4W5W5SW63S4S7S6S5S8S8S8S9S14
G21
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1 day agoS8
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S8S8S6SE85S7S6S65S6S8S7S9S8S10S9S9S6S53CalmCalmCalm
2 days agoCalmCalm3Calm3S735S6S43S7S6S5S9S9
G15
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G20
S11S8S8

Tide / Current Tables for Point Migley, Hale Passage, Washington
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Point Migley
Click for Map
Thu -- 12:39 AM PDT     9.03 feet High Tide
Thu -- 02:00 AM PDT     Moonset
Thu -- 05:07 AM PDT     Sunrise
Thu -- 07:29 AM PDT     2.57 feet Low Tide
Thu -- 01:05 PM PDT     5.11 feet High Tide
Thu -- 02:38 PM PDT     Moonrise
Thu -- 05:57 PM PDT     2.55 feet Low Tide
Thu -- 09:17 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.998.47.15.5432.62.633.64.34.95.14.94.43.62.82.62.93.64.65.97.2

Tide / Current Tables for Hale Passage, 0.5 miles SE of Lummi Pt, Washington Current
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Hale Passage
Click for Map
Thu -- 12:32 AM PDT     -0.00 knots Slack
Thu -- 02:00 AM PDT     Moonset
Thu -- 04:16 AM PDT     -1.15 knots Max Ebb
Thu -- 05:12 AM PDT     Sunrise
Thu -- 07:54 AM PDT     0.00 knots Slack
Thu -- 09:56 AM PDT     0.37 knots Max Flood
Thu -- 12:29 PM PDT     -0.00 knots Slack
Thu -- 02:38 PM PDT     Moonrise
Thu -- 04:11 PM PDT     -0.59 knots Max Ebb
Thu -- 06:30 PM PDT     0.00 knots Slack
Thu -- 09:12 PM PDT     Sunset
Thu -- 09:52 PM PDT     1.44 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.4-0.2-0.6-0.9-1.1-1.1-0.8-0.400.30.40.30.1-0.1-0.3-0.5-0.6-0.5-0.20.30.81.31.41.2

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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Wind Forecast for Seattle, WA (10,2,3,4)
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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.