Monday, May21, 2018 L-36.com


Marine Weather and Tides
Marblemount, 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 5:18AMSunset 8:51PM Monday May 21, 2018 8:13 AM PDT (15:13 UTC) Moonrise 10:57AMMoonset 12:55AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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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PZZ134 Admiralty Inlet- 244 Am Pdt Mon May 21 2018
Today..NW wind to 10 kt. Wind waves 1 ft or less.
Tonight..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Tue..NW wind to 10 kt. Wind waves 1 ft or less.
Tue night..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Wed..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Wed night..NW wind 15 to 25 kt becoming variable 5 to 15 kt after midnight. Wind waves 2 to 4 ft subsiding to 1 to 2 ft.
Thu..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Fri..NW wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 244 Am Pdt Mon May 21 2018
Synopsis for the northern and central washington coastal and inland waters..High pres offshore and lower pres east of the cascades will produce onshore flow through Friday. Winds will be strongest in the central and eastern strait of juan de fuca, especially during the late afternoon and evening hours each day.

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 211040
afdsew
area forecast discussion
national weather service seattle wa
340 am pdt Mon may 21 2018

Synopsis An upper level ridge will build over the area
through Tuesday for sunny and warmer weather. Southerly flow
aloft will develop midweek as an upper level low forms off the
california coast bringing high level moisture and instability
northward for a chance of mountain showers. Mild and generally
dry weather will continue for the lowlands. The shower chances
will increase next weekend as the low moves closer to western
washington.

Short term Satellite imagery shows an upper level ridge
offshore beginning to build into the area early this morning. No
precipitation echoes on the doppler radar at 3 am 10z. Skies are
beginning to clear from the north with a few breaks in the cloud
cover over the southern portion of the area as well. Wide variety
of temperatures at 3 am with the different cloud cloud. Locations
already clearing out have dropped in the mid 40s while locations
still with cloud cover are in the lower to mid 50s.

Surface gradients in the process of becoming northwesterly this
morning. The marine layer is much more shallow than the last
couple of mornings. Throw in some subsidence with the upper level
ridge building into the area and the ingredients are there for a
morning break out into the sunshine across western washington.

With more sunshine this afternoon high temperatures will be around
5 degrees warmer than yesterday with mid 60s to lower 70s over
the interior and lower to mid 60s along the coast.

Upper level ridge continuing to build over the area tonight and
Tuesday. Surface gradients go onshore slightly overnight but with
the marine layer over the interior eliminated today only expect
stratus to develop along the coast Tuesday morning. Even there the
stratus will be shallow and burn off in the morning. Mostly clear
skies tonight will allow temperatures to once again fall into the
mid 40s in the cooler locations with the remainder of the area in
the upper 40s to mid 50s. Temperatures aloft warming with the
strengthening ridge. Model 850 mb temperatures go from around
plus 10 to 12c tonight to plus 14 to 16c by 00z Wednesday. Surface
gradients remaining northwesterly during the afternoon on Tuesday
which will put a cap on the high temperatures. Expect the warmer
locations to approach 80 with upper 60s to mid 70s common for the
remainder of the area.

Some small changes to the pattern on Wednesday with an upper level
low developing off the california coast increasing the southerly
flow aloft over the area. With the daytime heating the air mass
will become slightly unstable over the higher terrain. This plus
the increase in mid level moisture over the area could produce a
shower over the mountains late in the day. For the lowlands the
surface gradients turn onshore Wednesday morning and increase
during the day. The increase in onshore flow will cool down the
high temperatures along the coast on Wednesday by a couple of
degrees while highs in the interior will be similar to Tuesday.

Long term Extended models in good agreement on Thursday with
the upper level low moving east and the flow aloft over western
washington becoming more southwesterly. This will cut off the
shower chances for the mountains. After increasing throughout the
day on Wednesday the low level onshore gradients weaken on
Thursday. With the weak marine push Wednesday night into Thursday
morning will go for slightly cooler, 5 degrees or less, high
temperatures on Thursday, mid 60s to mid 70s. Little change in the
pattern on Friday as the upper level low moves closer to the
northern california coast. Some differences in the models start
showing up for the weekend with the GFS tracking the low inland
into nevada while the ECMWF has a more northerly track. The ecmwf
solution will result in some showers for the weekend across the
area. With the inconsistency in the models will just go with
chance pops for now. With either solution the low level onshore
flow increases, lowering high temperatures back down into the 60s
for the most part Saturday and Sunday. Felton

Aviation Upper level ridging will build into western
washington today with light northwest flow aloft. The air mass is
stable and drying in the mid and upper levels. Areas of low level
moisture will dissipate by midday. Areas of MVFR ceilings this
morning should lift and scatter over the interior by 18z and by
around 21z near the coast. Weak low level onshore flow will bring
some low MVFR or ifr in stratus to the coast and locally inland
Tuesday morning, but the bulk of the region should remainVFR.

Ksea... A deck of stratocumulus between 040 and 050 is gradually
eroding from the north this morning as subsidence associated with
upper level ridging takes over.VFR will be the rule today with the
stratocu deck mostly gone by 18z. Surface winds light and variable
this morning will make a gradual shift to northwest 4 to 8 knots
this afternoon then north-northeast this evening. 27

Marine High pressure offshore and lower pressure east of the
cascades will result in weak onshore flow through Tuesday night.

Small craft advisory westerlies are likely in the central and
eastern strait of juan de fuca during the diurnal peak late
afternoon through early morning hours.

Onshore flow will probably be somewhat stronger Wednesday through
Friday. Gale westerlies are possible in the central and eastern
strait of juan de fuca those nights, especially Wednesday night
and Thursday night. Mcdonnal

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 3 pm this afternoon to 3 am pdt
Tuesday 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 mi43 min S 4.1 50°F 1018 hPa48°F
CHYW1 - 9449424 - Cherry Point, WA 73 mi43 min SSE 2.9 G 6 52°F 1017.7 hPa
PTWW1 - 9444900 - Port Townsend, WA 76 mi49 min E 1 G 2.9 49°F 50°F1019.2 hPa

Wind History for Cherry Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Arlington Municipal Airport, WA46 mi17 minN 310.00 miFair52°F46°F83%1019.3 hPa

Wind History from AWO (wind in knots)
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Last 24hrNW3NW4CalmNW3W3CalmCalmNE4N4NW7NW7NW9NW7NW3N4N3N5NE4N3N4CalmN3CalmN3
1 day agoCalmCalmCalmCalmNW7NW86W9W8NW7NW8NW9NW5NW4NW6NW6NW4N3CalmCalmCalmCalmCalmNW4
2 days agoCalmCalmCalmNW4CalmCalmS4Calm3CalmCalmCalmNW4N3NW5NW8NW5NW3W4NW4CalmCalmCalmCalm

Tide / Current Tables for Marysville, Quilceda Creek, Washington
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Marysville
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Mon -- 01:56 AM PDT     Moonset
Mon -- 05:22 AM PDT     Sunrise
Mon -- 05:37 AM PDT     5.46 feet Low Tide
Mon -- 09:56 AM PDT     8.26 feet High Tide
Mon -- 12:01 PM PDT     Moonrise
Mon -- 04:59 PM PDT     -0.44 feet Low Tide
Mon -- 08:48 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1110.297.56.35.65.56.177.98.37.96.85.33.41.50.1-0.40.224.36.99.110.6

Tide / Current Tables for Stanwood, Washington
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Stanwood
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Mon -- 01:57 AM PDT     Moonset
Mon -- 05:22 AM PDT     Sunrise
Mon -- 07:12 AM PDT     1.77 feet Low Tide
Mon -- 10:00 AM PDT     5.41 feet High Tide
Mon -- 12:01 PM PDT     Moonrise
Mon -- 06:45 PM PDT     -0.07 feet Low Tide
Mon -- 08:50 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.576.153.82.82.11.82.54.35.45.34.84.23.32.41.40.60.1-00.82.64.76.5

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 (11,2,3,4)
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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.