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 7:01AM||Sunset 7:36PM||Saturday March 25, 2017 6:37 AM PDT (13:37 UTC)||Moonrise 5:08AM||Moonset 3:58PM||Illumination 4%|
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|PZZ131 Central U.s. Waters Strait Of Juan De Fuca- 459 Am Pdt Sat Mar 25 2017 |
.small craft advisory in effect until 9 am pdt this morning...
Today..W wind 15 to 25 kt...easing to 5 to 15 kt late this morning. Wind waves 2 to 4 ft... Subsiding to 2 ft or less. A chance of showers.
Tonight..W wind 10 kt or less becoming e. Wind waves 1 ft or less.
Sun..E wind rising to 20 to 30 kt. Wind waves building to 3 to 5 ft. Rain.
Sun night..E wind 20 to 30 kt...becoming W 15 to 25 kt. Wind waves 2 to 5 ft.
Mon..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Mon night..W wind 15 to 25 kt...becoming E 10 kt or less. Wind waves 2 to 4 ft...subsiding.
Tue..E wind 10 to 20 kt. Wind waves 1 to 3 ft.
Wed..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
|PZZ100 459 Am Pdt Sat Mar 25 2017 |
Synopsis for the northern and central washington coastal and inland waters..A 1020 mb high will develop over the far sw washington coast this.afternoon and this will cause the onshore flow to weaken. The flow will become easterly tonight in response to falling pres over the offshore waters. An occluded front is expected to move across the area Sunday night.
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 251057|
area forecast discussion
national weather service seattle wa
357 am pdt Sat mar 25 2017
Synopsis An upper level trough will move east of the area this
morning. After a brief dry spell tonight another weather system
will bring rain back to western washington beginning Sunday
morning. Showers behind the front for Monday with another wet
system moving into the area Tuesday and Wednesday. There is a
chance for a dry day late next week.
Short term Satellite imagery shows upper level trough right
along the coast at 3 am/10z with the next system to reach the area
back out near 45n/145w. Doppler radars picking up plenty of
shower activity with the trough with most of the activity west of
the puget sound. With mostly cloudy skies over the area
temperatures were in the 40s.
Upper level trough axis moving through western washington this
morning. Shower activity will decrease significantly behind the
trough. Possible convergence zone development over northern
snohomish and southern skagit county later this morning into the
early afternoon hours but with the surface gradients becoming
light convergence zone will dissipate late in the day. Expect a
little bit of sunshine this afternoon but high temperatures will
remain below normal... In the upper 40s to mid 50s.
A brief break in the action tonight with the upper level trough
to the east and the next system still offshore. Rain out ahead of
the front will be near the coast by 12z. Lows will be in the upper
30s to mid 40s.
Next system moving into western washington on Sunday. Parent low
well north of the area near southern alaska while the jet stream
is aimed at northern california. The front will get stretched out
a weaken a little as it moves into western washington late in the
day. This will cut down on the rainfall amounts with less than a
half inch expected in most locations. Highs will the early arrival
of the precipitation will continue to be below normal... Near 50.
Trailing upper level trough just along the coast at 12z Monday
keeping showers in the forecast for Sunday night. Near the coast
by 12z Monday. Upper level trough axis moving through western
washington Monday morning with the shower activity becoming
confined to the coast and mountains in the afternoon. Another
convergence zone near the snohomish/skagit county line possible
Monday afternoon. Highs will continue to be cool... In the upper
40s to mid 50s. Lows on Sunday night will be in the upper 30s to
Long term Extended models in good agreement with yet another
front approaching western washington on Tuesday. The front stalls
over the area Tuesday night into Wednesday. Strong southwesterly
flow aloft with enhanced precipitation along the south slopes of
the olympics. Upper level trough moving through Thursday morning
with drying northwesterly flow aloft behind the trough later in
the day on Thursday. Race Thursday night into Friday between an
approaching warm front and a building upper level ridge over|
western washington. 00z run gives the ridge the upper hand and
pushes the warm front north of the area. Will stay with a dry
forecast for day 7. Felton
Aviation An upper level trof of low pres over the region early
this morning will cont moving east and will be over id this
afternoon. Contd wly flow aloft. Low level sly or onshore flow will
cont diminishing. Expect areas of MVFR cigs, with areas of MVFR
vsbys with heavier showers. The mtns will be partially obscd.
Ksea... Expect ocnl MVFR cigs, mainly this morning. Heavier showers
will also lower the visibility in the MVFR category range this
morning.VFR conditions are anticipated this afternoon thru tonight.
Sly winds will slowly diminish during the day today, becoming light
and variable tonight.
A 1020 mb high will develop over the far southwest wa coast this
afternoon, and this will cause the onshore flow to weaken. The flow
will become easterly or offshore tonight in response to falling
pressure over the offshore waters. An occluded front is expected to
move across the area Sunday night. Gale force southeasterlies are
possible over the coastal waters, beyond 10 nm, on Sunday ahead of
the front. Expect another frontal system to impact the area on
Hydrology No river flooding is expected for the next 7 days
with the exception of the flood prone skokomish river where
enhanced rainfall amounts along the south slopes of the olympics
Tuesday night int Wednesday could be enough to get the river to
flood stage. Felton
Climate With 0.24 inches yesterday the monthly precipitation
total for seattle is now 6.11 inches. Combined with the 8.85
inches in february this is only the 3rd time since weather records
started in seattle in the 1890's that both february and march have
gotten 6 inches plus of precipitation. The other two occurrences
2014 and 1972. Felton
Pz... Gale watch from Sunday morning through Sunday afternoon 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 for hazardous seas until 3 pm pdt this
afternoon 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 9 am pdt this morning for 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|
|PTAW1 - 9444090 - Port Angeles, WA||29 mi||61 min||13 G 16||44°F||47°F||1017 hPa|
|NEAW1 - 9443090 - Neah Bay, WA||36 mi||49 min||49°F|
|LAPW1 - 9442396 - La Push, WA||39 mi||61 min||WSW 7 G 11||45°F||44°F||1017.8 hPa|
|TTIW1 - Tatoosh Island, WA||43 mi||37 min||45°F||1017 hPa (+1.1)|
|DESW1 - Destruction Island, WA||43 mi||37 min||WSW 15 G 17||46°F||1018 hPa (+1.0)|
|46088 - New Dungeness, WA (Hein Bank)||45 mi||47 min||W 18 G 21||45°F||47°F||2 ft||1015.9 hPa (+1.0)||39°F|
|46087 - Neah Bay, WA (Traffic Separation Lighted Buoy)||46 mi||47 min||W 5.8 G 9.7||46°F||49°F||7 ft||1016.6 hPa (+1.2)||38°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||44 min||W 6||10.00 mi||Overcast||40°F||39°F||97%||1017.2 hPa|
Wind History from CLM (wind in knots)
|1 day ago||SW||SW||SW||Calm||NE||Calm||NE||Calm||NE||N||Calm||W||Calm||Calm||W||S||W||S||W|
|2 days ago||NW||Calm||SW||Calm||SE||E||S||NE||N||W||W||NW||NW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Twin Rivers |
Click for Map
Sat -- 12:39 AM PDT 6.38 feet High Tide
Sat -- 06:07 AM PDT Moonrise
Sat -- 06:37 AM PDT 1.87 feet Low Tide
Sat -- 07:07 AM PDT Sunrise
Sat -- 12:27 PM PDT 6.85 feet High Tide
Sat -- 04:57 PM PDT Moonset
Sat -- 07:06 PM PDT 0.38 feet Low Tide
Sat -- 07:36 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Juan De Fuca Strait (East) |
Click for Map
Sat -- 01:56 AM PDT 1.65 knots Max Flood
Sat -- 05:02 AM PDT -0.00 knots Slack
Sat -- 06:05 AM PDT Moonrise
Sat -- 07:05 AM PDT Sunrise
Sat -- 08:08 AM PDT -1.67 knots Max Ebb
Sat -- 12:49 PM PDT 0.00 knots Slack
Sat -- 02:08 PM PDT 0.28 knots Max Flood
Sat -- 03:28 PM PDT -0.00 knots Slack
Sat -- 04:56 PM PDT Moonset
Sat -- 07:34 PM PDT Sunset
Sat -- 08:09 PM PDT -2.36 knots Max Ebb
Sat -- 11:49 PM PDT 0.00 knots Slack
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 (9,2,3,4)(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.