Marine Weather and Tides
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
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|Sunrise 6:00AM||Sunset 8:22PM||Tuesday April 25, 2017 9:42 AM PDT (16:42 UTC)||Moonrise 5:08AM||Moonset 6:32PM||Illumination 0%|
EDIT (on/off)  Help
|PZZ130 West Entrance U.s. Waters Strait Of Juan De Fuca- 855 Am Pdt Tue Apr 25 2017 |
Today..SE wind 10 to 20 kt. Wind waves 1 to 3 ft. SW swell 5 ft at 9 seconds. Rain in the afternoon.
Tonight..SE wind 10 to 20 kt becoming W by midnight. Wind waves 1 to 3 ft. SW swell 6 ft at 8 seconds. Rain.
Wed..W wind 15 to 25 kt. Wind waves 2 to 4 ft. W swell 6 ft at 9 seconds. Showers.
Wed night and Thu..NW wind 15 to 25 kt. Wind waves 2 to 4 ft. W swell 9 ft at 11 seconds.
Thu night..W wind 15 to 25 kt easing to 10 to 20 kt after midnight. Wind waves 2 to 4 ft. W swell 8 ft at 11 seconds.
Fri..W wind 10 to 20 kt. Wind waves 1 to 3 ft. W swell 6 ft.
Sat..NE wind to 10 kt becoming s. Wind waves 2 ft or less. W swell 5 ft.
|PZZ100 855 Am Pdt Tue Apr 25 2017 |
Synopsis for the northern and central washington coastal and inland waters..A ridge of higher pres is over western washington today. A weakening pacific frontal system about 450 nm offshore early this morning to approach the coast this afternoon and move inland tonight. Strong onshore flow behind the front Wed into Thu should ease by Fri as higher pres builds over the region.
7 Day Forecast for Marine Location Near Sekiu, WAHourly EDIT Help
Area Discussion for - Seattle, WA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksew 251631|
area forecast discussion
national weather service seattle wa
931 am pdt Tue apr 25 2017
Synopsis High pressure aloft will keep conditions mostly dry
this morning. Rain will return by this afternoon and continue into
Wednesday morning as a couple of weather systems move onshore.
Showers will linger later Wednesday then decrease Thursday and
Friday. High pressure will build Saturday followed by a weak front
There were a few light showers over the cascades this morning
occurring well ahead of a frontal system presently offshore. Rain
associated with the frontal system was starting to move onto the
coast this morning.
Models hold together well for the incoming front and its lingering
effects. Said front definitely takes its time... As it looks only to
reach the coast by around noon today and will not reach the interior
until mid to late afternoon... Depending on location. Given the
orientation of the front... Oriented NW to se... Southern portions of
the CWA more likely to see rain move in during the early afternoon.
Seattle itself will be a bit interesting... As precip there may hold
off till closer to 00z. Once it is here though... Rain will linger
through the night tonight and continuing into the day Wed as the
front stalls before finally breaking up into more showery precip wed
night and into thu. Previous model runs had suggested the
possibility of the need for some winter weather headlines for the
cascades for wed... As snowfall there could potentially reach low end
advisory amounts. Models have backed away from this... Avoiding
putting a cherry on the very depressing sundae that has been this
combined winter and spring period. Model agreement starts to fall
apart on Friday. Both models show very similar building of a ridge
to the west of the area... But GFS suggests drying conditions while
the ECMWF provides a wetter solution. Have opted to side more with
the GFS purely out of sheer rain fatigue.
High temperatures will continue to run cool... With most locations
not escaping the mid 50s for the near term period. Smr/05
Long term from the prev discussion Model solutions fall back
into alignment Saturday with ridging overhead and dry conditions
with... Wait for it... Afternoon highs in the lower 60s. Cautiously
optimistic for that... But on the other hand... Models have been very
inconsistent with the long term over past several
runs... Particularly when it comes to placement of ridges and
duration of dry breaks so much of this section may end up falling
into the realm of so many grains of salt. Sunday sees rain again
over W wa... But placement of parent low is wildly different between
the two models... As is the coverage of precip after Sunday. GFS is|
generally more showery except for late Monday afternoon which sees
more organized activity along a front that quickly moves through.
The ECMWF shows two distinct waves... One Sunday morning and the
other late Monday afternoon... But is very quick in building a ridge
in for Monday night and actually offers a drier solution.
The short version of all this is that while models seem okay when
taken on their own... The fact that this current run looks very
little like runs from 24 hours ago and those looked very little like
runs 24 hours previous to that and it becomes clear that any degree
of confidence in the long term forecasts is not warranted at this
Aviation There are a few showers and areas of clouds with cigs
from 025-060 over western washington this morning. A front just
offshore will reach the coast this afternoon and move inland
tonight. Rain will develop on the coast this afternoon and spread
inland this evening.
Ksea... Current TAF seems to be in the ballpark, there will be a
southerly breeze today and tonight that should not shift til
Wednesday afternoon when a strong pscz pattern will develop.
Marine Southerlies will pick up today, especially over the
coastal water. Decent south winds will spread inland with the front
this evening. FROPA reaches the coastal beaches this evening and
westerlies move down the strait of juan de fuca overnight--and the
westerlies in the strait should reach gale force Wednesday
afternoon. There will be a strong pscz wind pattern in place
Wednesday afternoon and night--for that matter, those winds
gradually ease but the pattern stays the same through Thursday, with
westerlies coast and strait and a pscz over the puget sound area.
Pz... Small craft advisory until 1 am pdt Wednesday for coastal waters
from CAPE flattery to james island 10 to 60 nm-coastal waters
from james island to point grenville 10 to 60 nm-coastal
waters from point grenville to CAPE shoalwater 10 to 60 nm.
Small craft advisory until 3 am pdt Wednesday for coastal waters
from CAPE flattery to james island out 10 nm-coastal waters
from james island to point grenville out 10 nm-coastal waters
from point grenville to CAPE shoalwater out 10 nm-east
entrance u.S. Waters strait of juan de fuca-northern inland
waters including the san juan islands.
Gale watch from Wednesday afternoon through late Wednesday night
for central u.S. Waters strait of juan de fuca-east 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|
|NEAW1 - 9443090 - Neah Bay, WA||19 mi||43 min||53°F|
|TTIW1 - Tatoosh Island, WA||26 mi||43 min||48°F||1012.2 hPa (-0.5)|
|46087 - Neah Bay, WA (Traffic Separation Lighted Buoy)||27 mi||53 min||E 12 G 14||50°F||51°F||4 ft||1011.9 hPa (-1.4)||45°F|
|LAPW1 - 9442396 - La Push, WA||36 mi||67 min||ESE 4.1 G 8.9||47°F||47°F||1012 hPa|
|PTAW1 - 9444090 - Port Angeles, WA||45 mi||67 min||5.1 G 7||51°F||50°F||1013 hPa|
|DESW1 - Destruction Island, WA||48 mi||43 min||SE 19 G 21||47°F||1012.4 hPa (-1.4)|
Wind History for Neah Bay, WA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Quillayute, Quillayute State Airport, WA||31 mi||50 min||Var 4||10.00 mi||Overcast||47°F||46°F||97%||1012.3 hPa|
Wind History from UIL (wind in knots)
|1 day ago||E||E||E||SE||S||S|
|2 days ago||S|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Tue -- 12:45 AM PDT 4.36 meters High Tide
Tue -- 06:07 AM PDT Sunrise
Tue -- 06:08 AM PDT Moonrise
Tue -- 07:30 AM PDT 2.10 meters Low Tide
Tue -- 01:33 PM PDT 4.05 meters High Tide
Tue -- 07:17 PM PDT 2.54 meters Low Tide
Tue -- 07:32 PM PDT Moonset
Tue -- 08:22 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Strait of Juan de Fuca Entrance |
Click for Map
Tue -- 01:33 AM PDT 0.69 knots Max Flood
Tue -- 03:42 AM PDT -0.00 knots Slack
Tue -- 06:08 AM PDT Sunrise
Tue -- 06:09 AM PDT Moonrise
Tue -- 07:50 AM PDT -2.02 knots Max Ebb
Tue -- 11:46 AM PDT 0.00 knots Slack
Tue -- 02:16 PM PDT 0.99 knots Max Flood
Tue -- 04:50 PM PDT -0.00 knots Slack
Tue -- 07:33 PM PDT Moonset
Tue -- 08:24 PM PDT Sunset
Tue -- 08:24 PM PDT -1.62 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of PacificNorthwest EDIT
Wind Forecast for Seattle, WA (12,3,4,5)(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.