Sunday, February16, 2020
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Marine Weather and Tides
Marrowstone, WA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:14AMSunset 5:34PM Sunday February 16, 2020 8:35 PM PST (04:35 UTC) Moonrise 2:00AMMoonset 11:22AM Illumination 41% Phase: Third Quarter Moon; Moon at 23 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- 256 Pm Pst Sun Feb 16 2020
.small craft advisory in effect through late tonight...
Tonight..SW wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of showers.
Mon..SW wind 10 to 20 kt becoming nw to 10 kt in the afternoon. Wind waves 1 to 3 ft subsiding to 1 ft or less in the afternoon. A chance of showers in the morning then a slight chance of showers in the afternoon.
Mon night..S wind to 10 kt becoming variable 5 to 15 kt after midnight. Wind waves 2 ft or less.
Tue..SE wind to 10 kt becoming N 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tue night..N wind 5 to 15 kt becoming ne to 10 kt after midnight. Wind waves 2 ft or less.
Wed..Variable wind to 10 kt becoming se in the afternoon. Wind waves 1 ft or less.
Wed night..Light wind becoming se to 10 kt after midnight. Wind waves 1 ft or less.
Thu..SE wind to 10 kt becoming light. Wind waves 1 ft or less.
Fri..Light wind. Wind waves less than 1 ft.
PZZ100 256 Pm Pst Sun Feb 16 2020
Synopsis for the northern and central washington coastal and inland waters..A weak disturbance will move through the region today, once again bringing breezy conditions to the washington waters. Winds will start to ease Monday as high pressure starts to rebuild over the offshore waters, with easterly flow developing by Tuesday.


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


Area Discussion for - Seattle, WA
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FXUS66 KSEW 162245 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 245 PM PST Sun Feb 16 2020

SYNOPSIS. The next disturbance will cross the region this afternoon and evening for another round of lowland rain showers and mountain snow. After some lingering showers early Monday, high pressure builds across the region later Monday and remains in place through Wednesday. The ridge begins to break down late this week for an increasing chance of precipitation.

SHORT TERM /TONIGHT THROUGH WEDNESDAY/. There will be an increase in shower activity this evening as an upper level disturbance swings across the area. It is accompanied by an increase in low level onshore flow. This has led to a decent convergence zone over Skagit County and that will drift southward overnight then dissipate in the Cascades. It should generate 4 to 8 inches snow in the passes . in particular Stevens and Snoqualmie . between late this afternoon and the early hours of Monday. Upper ridging begins to build in from the west by Monday afternoon with most shower activity dying out and some partial sunshine possible for lowland areas.

The upper ridge is just offshore on Tuesday for a cool and dry day. Morning temperatures will be near or below freezing with patchy fog/freezing fog, but plenty of sunshine is expected with high temperatures running a little below normal. The upper ridge axis shifts onshore on Wednesday with the low level flow turning more strongly offshore as surface high pressure strengthens east of the Cascades. This should limit the morning fog on Wednesday and help give high temperatures a little boost . near 50 across much of the lowlands.

LONG TERM /THURSDAY THROUGH SUNDAY/. A split in the upper flow brings a decaying front into the offshore waters on Thursday. At this time, it looks to do little more than spread a few clouds across the region. It does, however, manage to flatten the upper ridge with zonal flow aloft developing. We might get away with another dry day on Friday, but deterministic model runs are split on the outcome with the Euro bringing at least some rain to the coast by afternoon. Beyond that, it looks like next weekend will be wet and cool with another frontal system arriving But. model ensembles continue to provide a glimmer of hope that this will not be a return to an extended period of perpetually wet weather.

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AVIATION. Flow aloft over W WA will remain northwesterly through Monday with southwesterly surface flow. A passing upper level disturbance will continue to bring showers to the area through this evening before starting to taper off tonight. Models do continue to suggest that a PSCZ may form over portions of King and Snohomish counties tonight before dissipating by Monday morning.

Cigs over W WA a mix of MVFR and VFR conditions . with MVFR most likely under shower activity. Will likely see this mix continue through this evening until showers fizzle out. Afterward . conditions likely to remain mostly VFR although the exception will be those locations such as OLM and PWT that are prone to lower cigs and fog. 18

KSEA . VFR conditions at the time of this writing. Main batch of showers seems to have dodged the terminal and while risk remains through tonight . finding it difficult to see chances meriting a TEMPO group Certainly would not rule any out though. nor conditions dipping down to MVFR should any move through. While a PSCZ is possible tonight . models seem to suggest it remaining either north or east of the terminal. This will need to be monitored. Winds remaining south to southwest before turning more westerly by late Monday morning Breezy in the near term. before easing to 6-12 knots overnight.

MARINE. Seeing SCA winds emerge in the Strait and expect these speeds to continue to become more widespread as the afternoon progresses and into tonight As such. will leave inherited SCAs in place Gradients begin to turn more easterly Monday. exerting a calming influence over W WA and allowing both winds and seas to subside. This should allow for headlines to gradually expire one by one. Benign conditions expected for at least the first half of the week. 18

HYDROLOGY. Minor flooding is forecast to come to an end on the White River at R Street. Several dry days are expected Monday through Wednesday, with the next chance for widespread precipitation late in the week. At this time, river flooding is not expected through the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Weather Advisory until 2 AM PST Monday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties.

PZ . Small Craft Advisory until 10 AM PST Monday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Small Craft Advisory until 10 AM PST Monday for Grays Harbor Bar.

Small Craft Advisory until 7 AM PST Monday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 4 AM PST Monday for Admiralty Inlet- Northern Inland Waters Including The San Juan Islands-Puget Sound and Hood Canal-West Entrance U.S. Waters Strait Of Juan De Fuca.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTWW1 - 9444900 - Port Townsend, WA 6 mi47 min 44°F 46°F1023.8 hPa
SISW1 - Smith Island, WA 20 mi25 min W 26 G 33 44°F 1022.9 hPa36°F
WPOW1 - West Point, WA 30 mi35 min S 9.9 G 9.9 44°F 1023.2 hPa (+0.5)39°F
PBFW1 - Padilla Bay Reserve, WA 31 mi65 min WNW 9.9 44°F 1022 hPa38°F
46088 - New Dungeness, WA (Hein Bank) 33 mi35 min WSW 25 G 33 44°F 46°F1023.7 hPa37°F
FRDW1 - 9449880 - Friday Harbor, WA 38 mi59 min 41°F 47°F1022.5 hPa
PTAW1 - 9444090 - Port Angeles, WA 41 mi59 min 42°F 46°F1023.6 hPa

Wind History for Port Townsend, WA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Whidbey Island Naval Air Station - Ault Field, WA21 mi39 minW 2110.00 miMostly Cloudy and Breezy46°F35°F66%1024 hPa
Everett Snohomish County, WA23 mi42 minVar 610.00 miOvercast41°F30°F65%1023.1 hPa

Link to 5 minute data for KNUW

Wind History from NUW (wind in knots)
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1 day agoW11SE4SE5E7SE8SE11SE15SE17
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Tide / Current Tables for Mystery Bay, Washington
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Mystery Bay
Click for Map
Sun -- 02:00 AM PST     Moonrise
Sun -- 03:58 AM PST     5.44 feet Low Tide
Sun -- 07:16 AM PST     Sunrise
Sun -- 09:38 AM PST     8.82 feet High Tide
Sun -- 11:22 AM PST     Moonset
Sun -- 05:30 PM PST     0.56 feet Low Tide
Sun -- 05:34 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.66.35.95.65.45.76.37.288.78.88.37.25.742.41.20.60.61.32.33.64.96.1

Tide / Current Tables for Nodule Pt, 0.5 mile SE of, Washington Current
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Nodule Pt
Click for MapFlood direction 160 true
Ebb direction 339 true

Sun -- 01:49 AM PST     -1.57 knots Max Ebb
Sun -- 02:00 AM PST     Moonrise
Sun -- 03:57 AM PST     0.00 knots Slack
Sun -- 07:02 AM PST     1.26 knots Max Flood
Sun -- 07:15 AM PST     Sunrise
Sun -- 09:04 AM PST     -0.00 knots Slack
Sun -- 11:22 AM PST     Moonset
Sun -- 02:01 PM PST     -3.22 knots Max Ebb
Sun -- 05:03 PM PST     0.00 knots Slack
Sun -- 05:34 PM PST     Sunset
Sun -- 08:39 PM PST     2.21 knots Max Flood
Sun -- 11:45 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.1-1.5-1.6-100.71.11.310.1-0.8-1.7-2.5-3-3.2-2.8-1.6-0.10.91.72.12.21.70.8

Weather Map
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wmap_P
GEOS Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (23,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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 numerous 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.