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.
This was requested by a user. If you have requests, please let me know.
|Sunrise 6:57AM||Sunset 7:39PM||Monday March 27, 2017 5:45 AM PDT (12:45 UTC)||Moonrise 6:09AM||Moonset 6:24PM||Illumination 0%|
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|PZZ131 Central U.s. Waters Strait Of Juan De Fuca- 338 Am Pdt Mon Mar 27 2017 |
Today..Variable wind 10 kt or less. Wind waves 1 ft or less. Showers.
Tonight..W wind 10 to 20 kt...becoming se 10 kt or less. Wind waves 1 to 3 ft...subsiding. A chance of showers.
Tue..E wind 10 to 20 kt. Wind waves 1 to 3 ft. A chance of rain.
Tue night..E wind 5 to 15 kt. Wind waves 2 ft or less.
Wed..E wind 5 to 15 kt...becoming W 25 to 35 kt. Wind waves building to 4 to 6 ft.
Wed night..W wind 25 to 35 kt. Wind waves 4 to 6 ft.
Thu..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Fri..W wind 10 to 20 kt. Wind waves 1 to 3 ft.
|PZZ100 338 Am Pdt Mon Mar 27 2017 |
Synopsis for the northern and central washington coastal and inland waters..A trough over the offshore waters will move across the area today for continued southerly flow. The flow will back slightly tonight ahead of a weak cold front. This front will move across the area on Tue. A strong frontal system will impact the region on Wed for gale force winds over parts of the area.
7 Day Forecast for Marine Location Near Clallam Bay, WAHourly EDIT Help
Area Discussion for - Seattle, WA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksew 271048|
area forecast discussion
national weather service seattle wa
348 am pdt Mon mar 27 2017
Synopsis An upper level trough will give showers to the area
through tonight. A warm front will move through the area on
Tuesday. A stronger front associated with a vigorous low pressure
system will give rain and windy conditions to the area Tuesday
night and Wednesday. Another upper level trough will give showers
to the area on Thursday. Dry weather is expected on Friday.
Short term Satellite imagery shows upper level trough along the
coast this morning. Plenty of shower activity on the doppler
radars with most of the shower activity west of puget sound. Under
cloudy skies temperatures were in the 40s.
Upper level trough moving through the area this morning spreading
showers over the entire area. Satellite imagery shows shower
activity behind the trough axis which will keep showers in the
forecast for this afternoon. High temperatures will continue to be
below normal... In the upper 40s and lower 50s.
Flat upper level ridge moving over western washington overnight
with a warm front moving over the top of the ridge into vancouver
island early Tuesday morning. Shower activity will decrease in
the evening. Rain associated with the warm front spreading over
the northwestern portion of the area late. Skies will remain
cloudy with lows in the 40s.
Warm front dropping down over western washington on Tuesday for
another round of rain. Rainfall amounts will not be much, up to a
quarter of an inch in the lowlands. With all the cloud cover
highs will have a tough time getting much warmer than the lower
Rain out ahead of the trailing cold front moving over western
washington Tuesday night. Rain continuing into Wednesday morning
with a frontal passage late in the morning changing the
precipitation to showers. A few hours of southwesterly 850 mb
winds of 30 to 45 knots along the south slopes of the olympics
will enhance the rainfall rates considerably in that location
late Tuesday night into Wednesday morning. A weakening 1006 mb low
will move inland over the southern portion of vancouver island and
into the interior of southern british columbia Wednesday
afternoon. Surface gradients will increase Wednesday morning with
winds increasing rapidly. There is the potential for the wind
speeds to reach advisory criteria Wednesday afternoon especially
from everett northward. Lows will again be in the 40s Tuesday
night with highs in the lower to mid 50s on Wednesday.
Long term Extended models in good agreement with an upper level
trough moving through western washington on Thursday keeping
showers in the forecast. Upper level ridge builds behind the
trough Thursday night into Friday with the 500 mb heights rising
into the upper 560 and lower 570 dms. Surface gradients do not
turn offshore but do go northerly during the day. Normal high for
seattle on Friday 56 degrees. With the sunshine and warming
temperatures aloft will go a couple of degrees above normal with
the warmer locations getting into the lower 60s.
Model inconsistencies continuing for the weekend with the GFS a
little stronger with the upper level ridge weakening the next
front enough to reduce the precipitation significantly. The ecmwf
is weaker with the ridge with the next system relatively intact as
it moves through western washington on Saturday. Inconsistencies
continue on Sunday with the ECMWF swinging a trough through the|
area while the GFS has an upper level low to the south with a
convective southerly flow aloft pattern. Neither model favored at
this point so will stay with the chance pops through the weekend.
Aviation An upper level trof of low pres over the area will move
into ERN wa and id this afternoon. SW flow aloft will become strong
nly this afternoon. A surface trof will move across the area during
the day today. The low level flow remain sly. Expect areas of MVFR
cigs/vsbys, especially with the heavier showers. The mtns will be
obscd at times.
Ksea... It looks like CIGS will bounce betweenVFR and MVFR
categories all day today, continuing thru tonight. Winds will be sly
7-12 kt, possibly gusty (near 20 kt) this afternoon.
A trough over the offshore waters will move across the area today
for continued southerly flow. The flow will back slightly tonight
ahead of a weak cold front. This front will move across the area on
Tuesday. A strong frontal system will impact the region on Wednesday
for gale force winds over parts of the area.
Hydrology A wet frontal system will give rain to the area later
Tuesday through Wednesday. While precipitation amounts will only
be moderate, soils are quite saturated and there will be a good
deal of runoff. Most rivers will see rises, and a few could
approach bankfull on Wednesday.
The flood-prone skokomish river looks like it will go over flood
stage early Wednesday and may see moderate flooding. A hydrologic
outlook remains in effect.
With the saturated soils and another round of moderate rain
expected Tuesday night into Wednesday for the lowlands the
landslide threat will be elevated once again. Felton
Climate With measurable rain already this morning at sea-tac
that makes 45 days with measurable rain since february 1st. Only
two years in over 120 years of weather records in seattle have
had more rain days in february and march, 1961 with 49 days and
2007 with 46 days.
Through 3 am this morning the combined february and march
precipitation total for seattle is 15.36 inches. This is the
second highest total on record. The record is 15.55 inches set in
There has been measurable precipitation on 23 out of the 27 days
at sea-tac this month. The record for the most days with
measurable precipitation in march in seattle is 27 days in 1989.
There has been measurable rain every day so far this month at
quillayute. The current rain day streak including this morning is
35 days in a row. The record is 47 days in 1990. Felton
Pz... Small craft advisory for hazardous seas until 6 pm pdt this
evening 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.
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|
|PTAW1 - 9444090 - Port Angeles, WA||29 mi||69 min||7 G 8||43°F||47°F||1011.3 hPa|
|NEAW1 - 9443090 - Neah Bay, WA||36 mi||45 min||50°F|
|LAPW1 - 9442396 - La Push, WA||39 mi||69 min||S 6 G 12||46°F||43°F||1011 hPa|
|TTIW1 - Tatoosh Island, WA||43 mi||45 min||44°F||1010.9 hPa (+2.1)|
|DESW1 - Destruction Island, WA||43 mi||45 min||S 22 G 24||48°F||1011.7 hPa (+1.8)|
|46088 - New Dungeness, WA (Hein Bank)||45 mi||55 min||NE 5.8 G 5.8||46°F||47°F||1010.9 hPa (+1.3)||43°F|
|46087 - Neah Bay, WA (Traffic Separation Lighted Buoy)||46 mi||55 min||S 12 G 14||47°F||49°F||5 ft||1010.7 hPa (+1.9)||42°F|
Wind History for Port Angeles, WA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Port Angeles Fairchild International Airport, WA||26 mi||52 min||WSW 3||10.00 mi||Overcast||41°F||41°F||100%||1011.7 hPa|
Wind History from CLM (wind in knots)
|1 day ago||W||W||Calm||Calm||NW||N||NW||NW|
|2 days ago||W||SW||N||Calm||N||NW||NE||NW||Calm||W||W||NW||SE||S||SW||Calm||Calm||SW||W||W||W||W |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Twin Rivers |
Click for Map
Mon -- 01:59 AM PDT 7.10 feet High Tide
Mon -- 07:03 AM PDT Sunrise
Mon -- 07:09 AM PDT Moonrise
Mon -- 08:13 AM PDT 0.65 feet Low Tide
Mon -- 02:05 PM PDT 7.28 feet High Tide
Mon -- 07:24 PM PDT Moonset
Mon -- 07:39 PM PDT Sunset
Mon -- 07:59 PM PDT New Moon
Mon -- 08:32 PM PDT 0.11 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Juan De Fuca Strait (East) |
Click for Map
Mon -- 12:30 AM PDT 0.00 knots Slack
Mon -- 03:13 AM PDT 1.95 knots Max Flood
Mon -- 06:01 AM PDT -0.00 knots Slack
Mon -- 07:01 AM PDT Sunrise
Mon -- 07:07 AM PDT Moonrise
Mon -- 09:21 AM PDT -2.23 knots Max Ebb
Mon -- 01:23 PM PDT 0.00 knots Slack
Mon -- 03:34 PM PDT 0.99 knots Max Flood
Mon -- 05:46 PM PDT -0.00 knots Slack
Mon -- 07:22 PM PDT Moonset
Mon -- 07:37 PM PDT Sunset
Mon -- 07:59 PM PDT New Moon
Mon -- 09:44 PM PDT -2.47 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 (8,2,3,4)(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.