Saturday, December16, 2017 L-36.com


Marine Weather and Tides
Marrowstone, WA

Version 3.4
What's New / NOTES
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.
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.

Sunrise 7:54AMSunset 4:19PM Saturday December 16, 2017 10:45 AM PST (18:45 UTC) Moonrise 6:10AMMoonset 3:46PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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PZZ134 Admiralty Inlet- 853 Am Pst Sat Dec 16 2017
.small craft advisory in effect from 7 pm pst this evening through Sunday afternoon...
Today..S wind to 10 kt. Wind waves 1 ft or less. A slight chance of rain in the morning then a chance of rain in the afternoon.
Tonight..SE wind rising to 15 to 25 kt during the evening. Wind waves building to 2 to 4 ft. A chance of rain in the evening then rain likely after midnight.
Sun..SE wind 15 to 25 kt, easing late. Wind waves 2 to 4 ft. Rain likely.
Sun night..Light wind becoming nw to 10 kt after midnight. Wind waves less than 1 ft becoming 1 ft or less after midnight.
Mon..N wind to 10 kt in the morning becoming light. Wind waves 1 ft or less in the morning becoming less than 1 ft.
Mon night..SE wind to 10 kt rising to 10 to 20 kt after midnight. Wind waves 1 to 3 ft.
Tue..S wind 15 to 25 kt easing to 10 to 20 kt. Wind waves 1 to 4 ft.
Wed..Variable wind to 10 kt becoming light. Wind waves 1 ft or less.
PZZ100 853 Am Pst Sat Dec 16 2017
Synopsis for the northern and central washington coastal and inland waters..A warm front will move through the waters tonight and Sunday. A deepening low will track inland near or to the north of western washington Tuesday. Offshore flow will develop Wednesday.

7 Day Forecast for Marine Location Near Marrowstone CDP, WA
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location: 48.05, -122.68     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 161721
afdsew
area forecast discussion
national weather service seattle wa
921 am pst Sat dec 16 2017

Synopsis A weak warm front will clip the region today. Rain
will increase on Sunday as a cold front sags southward into
western washington. A strengthening low center will pass across
southern vancouver island on Tuesday, and a strong trailing cold
front will bring wind and heavy mountain snow. Lingering showers
will continue Wednesday, then an upper ridge will bring dry
weather on Thursday and Friday.

Short term A warm front will clip the coast today with a chance
of rain in the interior. Precipitation amounts will be generally
light with 0.10" on the coast and a trace to few hundredths in the
interior. Cloudy skies will keep temperatures in the mid to upper
40s today.

Showers will increase on Sunday as a cold front slides SE into
western washington. Snow levels will hover around 4,000 feet and
will likely need a winter weather advisory for snow in the
cascades. Showers will continue to impact the region Sunday night
and Monday as the front stalls west-east over the area. Snow
levels will drop further, around 3,000 feet in the north and
central cascades. 33

Long term Previous discussion... Models agree in cyclogenesis
on Monday between 130w and 140w as a vigorous upper trough
preceded by lots of divergence aloft interacts with a leftover
surface front. All models show the low center moving across
southern or central vancouver island on Tuesday. The low center
will still be in the process of deepening as it moves by to the
north. Meanwhile, a strong trailing cold front will sweep across
western washington on Tuesday. The abundance of large-scale lift
will lead to a period of heavy precip in advance of the cold
front. Heavy snow should occur over the mountains. Still watching
wind potential on Tuesday, partly because winds tend to pick up
more with the passage of low centers that are still in the process
of strengthening.

A compact upper low with very cold air aloft will spread across
the forecast area early Wednesday, leading to plenty of post-
frontal convective showers.

An upper ridge axis will strengthen and amplify near 135w on
Wednesday, then move east to near 130w on Thursday. This will dry
out the weather quite readily on Wednesday night. With the upper
ridge axis continuing near 130w on Thursday and Friday, cool and
dry weather is expected at that time. Haner

Aviation Light westerly flow aloft becoming moderate southwesterly
tonight as a warm front reaches the area. The air mass is stable
and moist at all levels. Spotty rain may reach the coast and some
other interior spots this afternoon. Steady rainfall will arrive
at the coast by early evening with the warm front and spread
inland. A mix of MVFR andVFR this morning. Ifr appears confined
to to pwt along the west side of puget sound and olm, which should
improve to MVFR by afternoon. Widespread MVFR expected tonight
with rainfall, and local ifr conditions possible.

Ksea... MostlyVFR CIGS this morning around 4k ft, but brief periods
of MVFR are possible. Sprinkles possible but the bulk of rain will
arrive by mid evening with MVFR cigs. Southerly wind 4-8 knots,
become south-southwest 10-13 kt late tonight. Dtm

Marine A warm front will move through the waters this evening
through Sunday with small craft winds most waters, including puget
sound by later tonight.

Monday will be a lull in between weather systems. A vigorous
frontal system will move through the area Monday night and Tuesday
with gale force winds possible for the coastal waters. Offshore
flow will develop Wednesday. Dtm

Hydrology River flooding is not expected the next 7 days.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory all waters except the west and central
strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTWW1 - 9444900 - Port Townsend, WA 6 mi45 min SSE 8 G 9.9 41°F 48°F1028.1 hPa (+1.6)
SISW1 - Smith Island, WA 20 mi45 min SE 14 G 14 44°F 1026.6 hPa (+1.3)
46120 25 mi39 min S 5.8 43°F 1027.2 hPa39°F
WPOW1 - West Point, WA 30 mi45 min SSE 7 G 8 43°F 1027.7 hPa (+1.4)39°F
PBFW1 - Padilla Bay Reserve, WA 31 mi75 min SSW 4.1 38°F 1027 hPa
46088 - New Dungeness, WA (Hein Bank) 32 mi55 min WSW 1.9 G 3.9 47°F 47°F1 ft1026.5 hPa (+1.3)39°F
EBSW1 - 9447130 - Seattle, WA 36 mi45 min S 4.1 G 5.1 42°F 50°F1028.1 hPa (+1.7)
FRDW1 - 9449880 - Friday Harbor, WA 38 mi69 min NE 4.1 G 5.1 43°F 48°F1026.8 hPa
PTAW1 - 9444090 - Port Angeles, WA 41 mi69 min 2.9 G 5.1 47°F 47°F1026.3 hPa

Wind History for Port Townsend, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Whidbey Island Naval Air Station - Ault Field, WA21 mi1.8 hrsSE 88.00 miOvercast44°F39°F85%1027.9 hPa
Everett Snohomish County, WA23 mi52 minESE 510.00 miOvercast39°F37°F93%1028 hPa

Wind History from NUW (wind in knots)
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Last 24hrSE6SE8SE7SE5SE6E4SE5E5N5SE4E6E73E6E6SE6E7E7E5E5SE7SE8SE8SE8
1 day agoSE4E4CalmE6NW4E4SE3SE4SE6E5SE5SE8SE7SE7SE9SE7CalmE10SE9SE4SE7E6SE8SE8
2 days agoW5NW5SE5CalmCalmCalmCalmCalmCalmCalmSE4SE4S5CalmE3SE5SE6E4SE3SE3SE3SE5SE3Calm

Tide / Current Tables for Mystery Bay, Washington
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Mystery Bay
Click for Map
Sat -- 04:43 AM PST     8.16 feet High Tide
Sat -- 06:09 AM PST     Moonrise
Sat -- 07:55 AM PST     Sunrise
Sat -- 09:35 AM PST     6.35 feet Low Tide
Sat -- 02:04 PM PST     7.94 feet High Tide
Sat -- 03:46 PM PST     Moonset
Sat -- 04:17 PM PST     Sunset
Sat -- 09:46 PM PST     -0.73 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.13.75.4788.17.87.36.76.46.46.77.27.77.97.875.73.920.4-0.5-0.7-0.1

Tide / Current Tables for Port Townsend Canal, Washington Current
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Port Townsend Canal
Click for MapFlood direction 150 true
Ebb direction 330 true

Sat -- 01:47 AM PST     -0.00 knots Slack
Sat -- 04:33 AM PST     -2.59 knots Max Ebb
Sat -- 06:09 AM PST     Moonrise
Sat -- 07:55 AM PST     Sunrise
Sat -- 08:41 AM PST     0.00 knots Slack
Sat -- 10:20 AM PST     2.45 knots Max Flood
Sat -- 01:10 PM PST     -0.01 knots Slack
Sat -- 03:46 PM PST     Moonset
Sat -- 04:18 PM PST     Sunset
Sat -- 04:28 PM PST     -2.95 knots Max Ebb
Sat -- 08:37 PM PST     0.00 knots Slack
Sat -- 10:54 PM PST     3.24 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.71.8-1.1-2.2-2.5-2.6-2.4-2.1-1.51.22.42.31.80.6-1.8-2.6-2.9-2.9-2.7-2.3-1.61.42.93.2

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 (13,3,4,5)
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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.