Friday, March24, 2017 L-36.com


Marine Weather and Tides
Marietta-Alderwood, WA

Version 3.4
What's New / NOTES
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 6:59AMSunset 7:31PM Friday March 24, 2017 5:02 PM PDT (00:02 UTC) Moonrise 4:30AMMoonset 2:42PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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PZZ133 Northern Inland Waters Including The San Juan Islands- 240 Pm Pdt Fri Mar 24 2017
.small craft advisory in effect until midnight pdt tonight...
Tonight..SW wind 15 to 25 kt becoming S 10 to 20 kt after midnight. Wind waves 2 to 4 ft. Showers likely. A slight chance of tstms this evening.
Sat..SW wind 5 to 15 kt. Wind waves 2 ft or less. A chance of showers.
Sat night..SW wind 5 to 15 kt becoming S to 10 kt after midnight. Wind waves 2 ft or less. A slight chance of showers in the evening.
Sun..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Sun night..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..S wind 5 to 15 kt. Wind waves 2 ft or less.
Mon night..SW wind to 10 kt becoming S 5 to 15 kt after midnight. Wind waves 2 ft or less.
Tue..SE wind 15 to 25 kt easing to 10 to 20 kt. Wind waves 2 to 4 ft.
Wed..SE wind 15 to 25 kt becoming S 10 to 20 kt. Wind waves 2 to 4 ft.
PZZ100 240 Pm Pdt Fri Mar 24 2017
Synopsis for the northern and central washington coastal and inland waters..Weak higher pres to build over the coastal waters through Saturday with onshore flow easing. The next pacific frontal system is forecast to move onshore late Sunday. A following frontal system is expected to arrive by Tuesday. Another stronger system expected Wednesday.

7 Day Forecast for Marine Location Near Marietta-Alderwood, WA
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location: 48.76, -122.7     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 242216
afdsew
area forecast discussion
national weather service seattle wa
315 pm pdt Fri mar 24 2017

Synopsis An upper trough will bring showers and a slight chance
of thunderstorms this evening. Showers will decrease Saturday as the
trough shifts inland. Another system will bring rain on Sunday.

After showers Monday, Tuesday and Wednesday both look rainy, with
Thursday and Friday showery but drier.

Short term There is still much cloudiness around the area, and
showers are widespread. There have not been any lightning strikes
today, but instability is enough to keep a slight chance of
thunderstorms in the forecast through this evening. There might be
some less cloudy periods tonight, but overall it will remain mostly
cloudy, with overnight lows mostly in the lower 40s.

The upper trough over the area will maintain a chance of showers
into Saturday but the coverage will be less than today. Highs will
be mostly in the low to mid 50s. Showers will taper significantly
Saturday night as high pressure aloft briefly moves over the area.

Sunday morning is likely to be dry as well over most of the region.

Another frontal system will bring an increasing chance of rain
Sunday. This system is somewhat split and not too impressive but all
areas should see some rain. Rain will move onto the coast in the
morning. The interior will likely be dry until afternoon when rain
will arrive. Temperatures are forecast to be a few degrees lower
with highs around 50. Another upper trough moving through the region
will bring a showery pattern Monday. Sun breaks will allow highs to
climb back into the lower to mid 50s. Burke

Long term Tuesday earlier had appeared to be at least somewhat
dry, but now both Tuesday and Wednesday have wet weather systems.

This is true of both the euro and gfs. Thursday will be showery as
an upper trough passes. Friday has a chance of being a dry day,
though the GFS is trying to bring another system in late in the day.

Temperatures will be around normal all four days. Burke

Aviation An upper trough off the coast is expected to weaken and
move onshore Saturday. SW flow aloft over washington becoming
westerly Saturday. Air mass moist and weakly unstable.

Areas of showers east of the offshore upper trough through this
evening then decreasing through Saturday as the trough moves inland.

MainlyVFR ceilings though dipping to MVFR in some showers. Breaks
in the cloud cover between the showers at times as well. The air
mass is unstable enough to maintain the thunderstorm threat through
about 02z this evening.

Ceilings likely to drop to the upper end of MVFR many areas 10z-18z
Saturday before improving toVFR the rest of the day Saturday.

Ksea... PrimarilyVFR ceilings tonight dipping to the upper end of
MVFR in passing showers. Ceilings likely to drop to around 030 12z
Saturday. The risk of any evening thunderstorms is no more than 10
percent. Ssw winds in the 10 to 20 kt range to ease after 02z this
evening and continue southerly through Saturday morning for your
flight flow direction planning. Buehner

Marine Weak high pressure is expected to build over the coastal
waters through Saturday with onshore flow easing. The next pacific
frontal system is forecast to move onshore late Sunday. A following
frontal system is expected to arrive by Tuesday. Both of these
systems look relatively weak and gale force winds appear unlikely.

Another system approaching on Wednesday may be stronger and has the
potential to produce gale force winds for at least the outer coastal
waters. Buehner

Hydrology River flooding is unlikely over the next 7 days.

Sew watches/warnings/advisories
Wa... None.

Pz... Small craft advisory until 6 am pdt Saturday 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 from 6 am to 3 pm pdt
Saturday 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 rough bar until 6 am pdt Saturday for
grays harbor bar.

Small craft advisory until midnight pdt tonight for admiralty
inlet-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-puget sound and hood canal-west entrance u.S.

Waters strait of juan de fuca.

Small craft advisory for hazardous seas from midnight tonight to
3 pm pdt Saturday 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.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46118 7 mi78 min SE 19 50°F 1007.7 hPa44°F
CHYW1 - 9449424 - Cherry Point, WA 8 mi45 min SSE 17 G 20 1008.6 hPa
CPMW1 8 mi45 min SSE 17 G 20 50°F
FRDW1 - 9449880 - Friday Harbor, WA 22 mi87 min S 7 G 12 50°F 46°F1008.4 hPa
PBFW1 - Padilla Bay Reserve, WA 24 mi93 min S 16 52°F 1008 hPa45°F
SISW1 - Smith Island, WA 31 mi63 min WSW 2.9 G 4.1 50°F 1008.4 hPa (+0.6)
46088 - New Dungeness, WA (Hein Bank) 38 mi43 min W 5.8 G 7.8 48°F 47°F1 ft1007.9 hPa45°F
PTWW1 - 9444900 - Port Townsend, WA 45 mi45 min SSE 7 G 13

Wind History for Cherry Point South Dock, WA
(wind in knots)    EDIT      (on/off)   Help
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SE8
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G20
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S20
G26
SW16
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S9
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G24
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G27
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SE20
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ago
SE11
SE7
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NE3
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G11
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G17
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G12
SE26
G34
SE22
SE21
G26
SE19
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G23
S19
S11
G14
S15
SE22
SE23

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bellingham, Bellingham International Airport, WA9 mi70 minSSE 1210.00 miOvercast53°F42°F66%1009 hPa
Eastsound, Orcas Island Airport, WA11 mi68 minS 9 G 168.00 miA Few Clouds52°F42°F72%1007.8 hPa
Friday Harbor, Friday Harbor Airport, WA24 mi70 minSSE 710.00 miOvercast52°F44°F75%1008.6 hPa

Wind History from BLI (wind in knots)
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Last 24hrS6CalmNE55SE8SE10SE4NE4CalmNE3SE9N5SE7NE5N4W4NW4SE8SE9S12
G22
S12
G18
S13
G23
S9
G16
S12
1 day agoS14
G26
CalmSW11
G17
56SE3SE7SE8SE8S10SE13SE14S14S13
G21
SE12SE15
G22
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SE13SE11S14
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2 days agoSE6SE8SE14
G17
SE6N5SE6N3N3CalmCalmNE6NE5CalmSE7SE18
G27
SE19
G33
SE16
G32
SE16
G30
SE18
G29
SE20
G27
S16
G28
S17
G27
S18
G30
S14
G26

Tide / Current Tables for Point Migley, Hale Passage, Washington
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Point Migley
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Fri -- 04:40 AM PDT     8.08 feet High Tide
Fri -- 05:30 AM PDT     Moonrise
Fri -- 07:04 AM PDT     Sunrise
Fri -- 09:43 AM PDT     5.22 feet Low Tide
Fri -- 02:47 PM PDT     6.94 feet High Tide
Fri -- 03:42 PM PDT     Moonset
Fri -- 07:30 PM PDT     Sunset
Fri -- 09:17 PM PDT     0.83 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.756.47.4887.66.75.85.35.25.45.86.36.86.96.55.64.32.81.50.911.7

Tide / Current Tables for Hale Passage, 0.5 miles SE of Lummi Pt, Washington Current
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Hale Passage
Click for Map
Fri -- 01:03 AM PDT     1.22 knots Max Flood
Fri -- 04:43 AM PDT     -0.00 knots Slack
Fri -- 05:27 AM PDT     Moonrise
Fri -- 07:04 AM PDT     Sunrise
Fri -- 07:42 AM PDT     -0.63 knots Max Ebb
Fri -- 11:00 AM PDT     0.00 knots Slack
Fri -- 12:51 PM PDT     0.27 knots Max Flood
Fri -- 02:25 PM PDT     -0.00 knots Slack
Fri -- 03:44 PM PDT     Moonset
Fri -- 07:18 PM PDT     -0.94 knots Max Ebb
Fri -- 07:29 PM PDT     Sunset
Fri -- 10:29 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.21.20.90.4-0.1-0.4-0.6-0.6-0.6-0.300.20.30.1-0.1-0.3-0.6-0.8-0.9-0.9-0.6-0.30.4

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Seattle, WA (20,4,5,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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weather_mapweather_map weather_map

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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.