Marine Weather and Tides
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.
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.
|Sunrise 5:54AM||Sunset 8:20PM||Thursday April 26, 2018 4:08 AM PDT (11:08 UTC)||Moonrise 3:37PM||Moonset 3:58AM||Illumination 85%|
EDIT (on/off)  Help
|PZZ133 Northern Inland Waters Including The San Juan Islands- 300 Am Pdt Thu Apr 26 2018 |
Today..N wind 5 to 15 kt becoming nw to 10 kt in the afternoon. Wind waves 2 ft or less.
Tonight..NW wind 5 to 15 kt becoming N after midnight. Wind waves 2 ft or less.
Fri..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Fri night..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Sat..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Sat night..SW wind 5 to 15 kt becoming 10 to 20 kt after midnight. Wind waves 1 to 3 ft.
Sun..S wind to 10 kt rising to 10 to 20 kt. Wind waves 1 ft or less building to 1 to 3 ft.
Mon..S wind 10 to 20 kt becoming sw 15 to 25 kt. Wind waves 1 to 4 ft.
|PZZ100 300 Am Pdt Thu Apr 26 2018 |
Synopsis for the northern and central washington coastal and inland waters..Offshore flow will strengthen today. Onshore flow will return tonight and increase Friday. Onshore flow will slowly relax Saturday and Sunday.
7 Day Forecast for Marine Location Near Marietta-Alderwood, WAHourly EDIT Help
Area Discussion for - Seattle, WA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksew 261014|
area forecast discussion
national weather service seattle wa
315 am pdt Thu apr 26 2018
Synopsis One last day of warm and dry conditions over washington
with high temperatures well above seasonal normals. An upper level
low will approach from the southwest... Allowing for showers to creep
back into the forecast starting Friday and persisting through the
weekend. Temperatures will be much cooler this weekend... Returning
to near average values for this time of the year.
Short term Current satellite and obs show clear skies continuing
over W wa this early morning with temperatures at the time of this
writing ranging from the low 40s to the upper 50s.
Forecast remains consistent with regards to today and into Friday as
the upper level ridge continues to hold court. Continued offshore
flow will help to ensure high temps today will be a little
toasty... But with many locations having records for today in the
80s... Might be tough to see any records fall although it certainly
will not be for lack of trying. A gradual change over to onshore
flow this afternoon will make for some cooling along the coast... But
this cooling will not make much headway inland until it gets a
little help from the approaching low pressure system slated to
impact the area this weekend.
Speaking of which... Models continue to be in a degree of agreement
as to the low's approach on Friday and holding back any precip until
late afternoon... And even then it is really only present in the sw
portion of the cwa. Highs Friday will be more reflective of the
change to onshore flow... With many locations proving to be on the
order of around 15 degrees cooler than highs on Thursday. More
widespread showers look to hold off until Friday evening overnight.
For the weekend... GFS and ECMWF appear to have finally come into
alignment taking the low center over northern or which will keep
showers in the forecast for W wa throughout Saturday and
Sunday... With the prospect of some breaks here and there. High
temperatures during this time frame will be closer to normal with
lowland locations only seeing highs in the mid 50s. Smr
Long term Models remain in agreement regarding the start of next
week with a secondary system right on the heels of the exiting
weekend system... Allowing for pops to linger into Monday. In the
wake of this... Models start to drift apart... With the GFS ejecting|
the moisture out quicker and allowing for another upper level ridge
to build while the ECMWF keeps enough moisture for the prospect of
showers into Tuesday afternoon. Opted for a compromise between the
two models and decided on a slight chance for showers to linger into
Tuesday. The second half of next week looks to be dry with
temperatures climbing once again. Smr
Aviation Upper level ridge over western washington shifting
east today with increasing southerly flow aloft. At the surface,
offshore flow will peak this morning then weaken this afternoon. Low
level flow becoming onshore overnight into Friday morning.
Satellite imagery shows stratus along the south coast just south of
grays harbor. The offshore flow will keep the stratus off the coast
into this morning with the stratus moving inland along the coast in
the late afternoon hours with the stratus surging inland in the
evening. Expect the stratus to get east of the puget sound middle to
late Friday morning. Ceilings with the stratus near 1000 feet.
Ksea... Just some high clouds with northerly winds 6 to 10 knots
increasing to 10 to 14 knots this afternoon. Winds switching to
southwesterly 06z-12z Friday. Felton
Marine Offshore flow will increase today. It will likely be
strong enough to bring small craft advisory strength easterly winds
to the west entrance and adjacent coastal waters today. Advisories
are in effect in those zones. Otherwise winds will be northerly or
easterly, less than 20 kt today.
Onshore flow will return tonight and increase Friday. Gale force
westerly winds are possible in the strait Friday and Friday night. A
gale watch is in effect then. Onshore flow will slowly relax
Saturday and Sunday. Chb
Sew watches warnings advisories
Pz... Gale watch from Friday afternoon through late Friday night for
central u.S. Waters strait of juan de fuca-east entrance
u.S. Waters strait of juan de fuca.
Small craft advisory until 2 pm pdt this afternoon for coastal
waters from CAPE flattery to james island out 10 nm-west
entrance u.S. Waters strait of juan de fuca.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|46118||7 mi||74 min||Calm||49°F||1017 hPa||46°F|
|CHYW1 - 9449424 - Cherry Point, WA||8 mi||51 min||N 2.9 G 5.1||54°F||1017.6 hPa|
|CPMW1||8 mi||57 min||N 2.9 G 4.1||52°F||49°F|
|FRDW1 - 9449880 - Friday Harbor, WA||22 mi||93 min||WSW 1 G 1.9||47°F||49°F||1017.9 hPa|
|PBFW1 - Padilla Bay Reserve, WA||24 mi||99 min||N 1||50°F||1018 hPa||44°F|
|SISW1 - Smith Island, WA||31 mi||79 min||N 4.1 G 5.1||53°F||1017.8 hPa (-0.3)||43°F|
|46088 - New Dungeness, WA (Hein Bank)||38 mi||79 min||NNW 5.8 G 5.8||55°F||49°F||1017.6 hPa (-0.3)||40°F|
|PTWW1 - 9444900 - Port Townsend, WA||45 mi||57 min||Calm G 1||49°F||48°F||1018.3 hPa|
Wind History for Cherry Point South Dock, WA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Bellingham, Bellingham International Airport, WA||9 mi||16 min||N 0||10.00 mi||Fair||42°F||41°F||96%||1018.5 hPa|
|Eastsound, Orcas Island Airport, WA||11 mi||14 min||N 0||10.00 mi||Fair||48°F||44°F||87%||1017.9 hPa|
|Friday Harbor Airport, WA||24 mi||16 min||N 0||10.00 mi||Fair||46°F||37°F||71%||1018.3 hPa|
Wind History from BLI (wind in knots)
|1 day ago||Calm||N||N||N||N||N||N||N||W||W||W||SW||SW||S||S||Calm||S||Calm||Calm||Calm||Calm||W|
|2 days ago||Calm||Calm||Calm||Calm||NE||N||NE||W||W||W||W||W||W||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Point Migley |
Click for Map
Thu -- 03:47 AM PDT 8.72 feet High Tide
Thu -- 04:57 AM PDT Moonset
Thu -- 05:59 AM PDT Sunrise
Thu -- 09:38 AM PDT 3.08 feet Low Tide
Thu -- 03:40 PM PDT 6.55 feet High Tide
Thu -- 04:37 PM PDT Moonrise
Thu -- 08:18 PM PDT Sunset
Thu -- 09:03 PM PDT 1.82 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Hale Passage |
Click for Map
Thu -- 12:21 AM PDT 1.41 knots Max Flood
Thu -- 03:43 AM PDT -0.00 knots Slack
Thu -- 04:56 AM PDT Moonset
Thu -- 06:01 AM PDT Sunrise
Thu -- 07:03 AM PDT -1.04 knots Max Ebb
Thu -- 10:28 AM PDT 0.00 knots Slack
Thu -- 01:31 PM PDT 0.69 knots Max Flood
Thu -- 03:46 PM PDT -0.00 knots Slack
Thu -- 04:37 PM PDT Moonrise
Thu -- 07:07 PM PDT -0.83 knots Max Ebb
Thu -- 08:16 PM PDT Sunset
Thu -- 10:01 PM PDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Seattle, WA (7,2,3,4)(on/off)  Help
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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.