Monday, August21, 2017 L-36.com


Marine Weather and Tides
Shelton, 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 6:16AMSunset 8:11PM Monday August 21, 2017 4:51 AM PDT (11:51 UTC) Moonrise 5:07AMMoonset 7:22PM Illumination 1% Phase: New Moon; Moon at 29 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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PZZ135 Puget Sound And Hood Canal- 230 Am Pdt Mon Aug 21 2017
Today..N wind to 10 kt. Wind waves 1 ft or less. Patchy morning fog.
Tonight..N wind to 10 kt. Wind waves 1 ft or less.
Tue..Light wind becoming nw to 10 kt in the afternoon. Wind waves 1 ft or less.
Tue night..NW wind 5 to 15 kt becoming variable to 10 kt after midnight. Wind waves 2 ft or less.
Wed..Light wind. Wind waves less than 1 ft.
Wed night..N wind to 10 kt. Wind waves 1 ft or less.
Thu..SE wind to 10 kt becoming N 5 to 15 kt. Wind waves 2 ft or less.
Fri..N wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 230 Am Pdt Mon Aug 21 2017
Synopsis for the northern and central washington coastal and inland waters..Higher pres off the coast and lower pres east of the the cascades will maintain onshore flow into western washington through late this week. A weak system moving into british columbia mid week will likely strengthen the onshore flow then.

7 Day Forecast for Marine Location Near Shelton, WA
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location: 47.2, -123.08     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 211045
afdsew
area forecast discussion
national weather service seattle wa
330 am pdt Mon aug 21 2017

Synopsis High pressure will build over the pacific northwest today
and Tuesday, then shift eastward. After some areas of morning low
clouds and fog, mostly sunny skies and warmer temperatures are
expected. A weak trough will approach the region Wednesday then
quickly move across the area Wednesday night and Thursday. Cooler
temperatures will prevail and there will a chance some showers,
especially coast and mountains. Another ridge builds Friday through
the weekend with a return to dry weather and above average
temperatures.

Short term High clouds that passed through the area yesterday
have pretty much cleared out as high pressure aloft build over the
pacific northwest. The ridge will maintain dry weather the next
couple days with light northerly flow. Clear skies this morning has
allowed for radiational cooling with areas of fog and low clouds
forming in place. Satellite fog product imagery shows this low level
moisture expanding rapidly along the coast and reaching down the
strait and through the chehalis gap into parts of the southwest
interior. While tops on these clouds are likely quite low, probably
less than 1-2k ft, it does appear that the low clouds could deepen
and penetrate further into greater puget sound than was expected.

Low clouds or fog could reach most of the interior waters and
surrounding coastlines except perhaps not reaching the north
interior and possibly the east lowlands and foothills. The good news
is that the shallow cloud tops should burn off rapidly, hopefully by
9 to 10 am just before the eclipse peaks. If clouds do hang in and
expand over the next few hours, the best chance of viewing the
eclipse will probably be east of lake washington and locations with
some elevation. Hopefully the shallow nature of the fog and stratus
will allow it to burn off quickly this morning. Once the shallow
moisture mixes, sunny skies will prevail the rest of the day. Highs
will warm into the low 80s today and again Tuesday with no rain
expected.

The pattern begins to change by Wednesday as an upper trough
approaches the region. Heights will fall and the flow will become
onshore with cooler high temperatures. Models seem to hold back on
the deeper moisture until the main trough axis shifts through early
Thursday. This will be the highest chance for measurable rain
around western washington, although models agree that amounts will
be unimpressive. Orographic enhancement should squeeze out a bit
more rainfall along west facing slopes, perhaps a tenth of an inch
in spots.

Long term High temperatures will struggle to reach above 70 on
Thursday with the chance of showers ending by evening. Long range
models still agree on building another ridge on Friday through the
weekend. The latest GFS is not as amplified with the ridge compared
to past runs. However, the ECMWF still builds 500 mb heights above
5800m by Saturday and Sunday. Highs could reach the low to mid 80s
if this pans out. Mercer

Aviation Building upper level ridge just off the coast early this
morning will move onshore by late today. NW flow aloft to back to
westerly later today. At the surface, lower pressure east of the
cascades with higher pressure off the coast for low level onshore
flow into western washington. Air mass dry except for areas of a
shallow surface-based marine layer mainly along the coast and in the
strait this morning. Cirrus overhead early this morning to also thin
out by midday today as the upper ridge axis moves ashore.

The thin cirrus has helped impede the low stratus formation
overnight. But as the cirrus thins out through 16z, should see some
stratus form mainly along the coast, the strait and north sound. The
inland stratus should be thin and short-lived - generally dissipated
by 17z.

Ksea... Northerly wind 4-8 kt to ease a bit by sunrise, but pick up
in the 5-10 kt range again before 18z. Not much of a chance of
stratus at the terminal around 13z-16z, but may be out over the
sound. OtherwiseVFR conditions through this evening. Buehner

Marine Higher pressure off the coast with lower pressure east of
the cascades will maintain varying levels of low level onshore flow
into western washington through late this week.

Small craft advisory west winds are likely in the central and
eastern strait of juan de fuca each evening through early morning,
although gale westerlies are possible Wednesday night as a weak
upper level trough approaches british columbia and tracks inland
Thursday. Buehner

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory through 5 am pdt Tuesday for central u.S.

Waters strait of juan de fuca-east entrance u.S. Waters strait
of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46121 19 mi44 min 7.8 60°F 1019 hPa56°F
TCMW1 - 9446482 - Tacoma Met, WA 35 mi52 min NNW 5.1 G 6
TCNW1 - 9446484 - Tacoma, WA 36 mi52 min 61°F 55°F1020.1 hPa (+0.0)
WPOW1 - West Point, WA 47 mi52 min N 8.9 G 9.9 56°F 1020.5 hPa (+0.0)56°F
EBSW1 - 9447130 - Seattle, WA 48 mi52 min NW 2.9 G 5.1 61°F 56°F1020.2 hPa (+0.0)

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Shelton, Shelton Sanderson Field, WA4 mi59 minN 010.00 miFair53°F51°F93%1019.2 hPa
Olympia, Olympia Airport, WA18 mi58 minNE 510.00 miFair57°F55°F96%1019.8 hPa

Wind History from SHN (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmS45NW33SW6CalmE5W5NW3CalmCalmW3NW3CalmCalm
1 day agoSW5W5W4SW5SW3SW4Calm3S7W9SE5
G14
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SW12SW8SW7W8W6W4W3NW3CalmCalm
2 days agoW4W4SW5W5SW5W3SW6SW7--3SW11SW11SW14
G22
SW12SW15SW14SW11SW8SW10W7W6W4W5W6

Tide / Current Tables for Shelton, Washington
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Shelton
Click for Map
Mon -- 01:10 AM PDT     4.82 feet Low Tide
Mon -- 05:47 AM PDT     13.58 feet High Tide
Mon -- 06:07 AM PDT     Moonrise
Mon -- 06:17 AM PDT     Sunrise
Mon -- 11:31 AM PDT     New Moon
Mon -- 01:18 PM PDT     -1.46 feet Low Tide
Mon -- 07:42 PM PDT     15.11 feet High Tide
Mon -- 08:12 PM PDT     Sunset
Mon -- 08:21 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.74.85.57.710.612.913.612.811.18.55.42.3-0.2-1.4-0.91.45.19.312.714.715.114.1129.3

Tide / Current Tables for Hammersley Inlet, W of Skookum Pt, Washington Current
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Hammersley Inlet
Click for Map
Mon -- 01:20 AM PDT     0.00 knots Slack
Mon -- 04:01 AM PDT     1.42 knots Max Flood
Mon -- 06:06 AM PDT     Moonrise
Mon -- 06:15 AM PDT     -0.00 knots Slack
Mon -- 06:17 AM PDT     Sunrise
Mon -- 10:03 AM PDT     -2.61 knots Max Ebb
Mon -- 11:31 AM PDT     New Moon
Mon -- 01:32 PM PDT     0.00 knots Slack
Mon -- 04:50 PM PDT     2.46 knots Max Flood
Mon -- 08:02 PM PDT     -0.01 knots Slack
Mon -- 08:12 PM PDT     Sunset
Mon -- 08:21 PM PDT     Moonset
Mon -- 11:12 PM PDT     -1.85 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.2-0.30.51.21.41.10.3-0.8-1.7-2.4-2.6-2.4-1.8-0.70.51.62.32.521.20-0.9-1.6-1.8

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 (7,2,3,4)
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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.