Monday, August21, 2017 L-36.com


Marine Weather and Tides
Olympia, 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 10:56 AM PDT (17:56 UTC) Moonrise 5:07AMMoonset 7:22PM Illumination 0% 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- 841 Am Pdt Mon Aug 21 2017
Today..N wind to 10 kt. Wind waves 1 ft or less. Patchy fog in the morning.
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 841 Am Pdt Mon Aug 21 2017
Synopsis for the northern and central washington coastal and inland waters..High pres off the coast and lower pres east of the the cascades will maintain onshore flow across western washington through late this week. A weak system moving into british columbia mid week will strengthen the onshore flow.

7 Day Forecast for Marine Location Near Olympia city, WA
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location: 47.08, -123.01     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 211528
afdsew
area forecast discussion
national weather service seattle wa
828 am pdt Mon aug 21 2017

Update There are no significant updates to the forecast this
morning. Stratus and fog in the shallow, surface-based marine
layer is limited mainly to the coastal and inland waters and the
larger river valleys.

Synopsis An upper ridge will move across the pacific northwest,
bringing mostly sunny and warmer weather to western washington
today through Wednesday. A weak upper trough will move across the
area Wednesday night and Thursday for cooler weather and a chance
of showers, especially for the coast and mountains. Another ridge
will bring dry and warmer weather this weekend.

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 Light northwest flow aloft continues over western
washington this morning ahead of an upper ridge just off the
pacific northwest coast. The flow will switch to west-southwest
midday today as the ridge moves inland this afternoon and tonight.

At the surface, high pressure remains offshore with lower
pressure east of the cascades, for weak low level onshore flow.

The air mass is dry except for a shallow surface-based marine
layer mainly over the coastal and inland waters and in the larger
river valleys. The inland stratus should generally clear by 17z,
with stratus on the coast clearing by 19z. Stratus fog should be
even more limited late tonight and Tuesday morning.

Ksea... North to northwest wind 6-12 kt. It looks like stratus fog
this morning should remain over the sound. Mcdonnal

Marine High pressure off the coast with lower pressure east of
the cascades will maintain varying degrees 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 Tuesday and Wednesday nights
as a weak upper level trough approaches british columbia and
tracks inland Thursday. Mcdonnal

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory until 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 20 mi27 min 1.9 61°F 1019.6 hPa56°F
TCNW1 - 9446484 - Tacoma, WA 34 mi38 min 59°F 58°F1020.3 hPa
TCMW1 - 9446482 - Tacoma Met, WA 34 mi38 min WNW 6 G 6
WPOW1 - West Point, WA 50 mi56 min N 8.9 G 8.9 55°F 1020.6 hPa (+0.0)55°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Olympia, Olympia Airport, WA9 mi62 minNNE 810.00 miFair66°F55°F70%1019.9 hPa
Shelton, Shelton Sanderson Field, WA13 mi63 minSE 410.00 miFair65°F55°F73%1019.2 hPa
Fort Lewis / Gray U. S. Army Airfield, WA23 mi2 hrsN 410.00 miFair64°F58°F83%1020.6 hPa

Wind History from OLM (wind in knots)
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Last 24hrCalm3N8N6NE6NE6N4NE6N5NE4CalmN6N4NE4CalmCalmCalmNE5N3N4CalmN6NE6NE8
1 day agoCalm33CalmCalmN7Calm4NW9NW5CalmCalmSE4CalmCalmCalmCalmCalmCalmS3CalmCalmCalmCalm
2 days agoS3Calm44W8W8W8W8W8W6SW5S7S4S5SE4S3S5S3S43S3S5SW34

Tide / Current Tables for Rocky Point, Eld Inlet, Washington
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Rocky Point
Click for Map
Mon -- 12:01 AM PDT     5.77 feet Low Tide
Mon -- 05:00 AM PDT     14.12 feet High Tide
Mon -- 06:07 AM PDT     Moonrise
Mon -- 06:17 AM PDT     Sunrise
Mon -- 11:31 AM PDT     New Moon
Mon -- 12:09 PM PDT     -1.74 feet Low Tide
Mon -- 06:55 PM PDT     15.71 feet High Tide
Mon -- 08:11 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
5.86.58.511.113.314.113.511.795.62.1-0.6-1.7-11.55.29.312.81515.714.912.8107.3

Tide / Current Tables for Eld Inlet Entrance, Washington Current
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Eld Inlet Entrance
Click for Map
Mon -- 12:02 AM PDT     0.01 knots Slack
Mon -- 02:41 AM PDT     0.85 knots Max Flood
Mon -- 04:42 AM PDT     -0.00 knots Slack
Mon -- 06:06 AM PDT     Moonrise
Mon -- 06:16 AM PDT     Sunrise
Mon -- 08:49 AM PDT     -0.87 knots Max Ebb
Mon -- 11:31 AM PDT     New Moon
Mon -- 12:14 PM PDT     0.00 knots Slack
Mon -- 03:30 PM PDT     1.48 knots Max Flood
Mon -- 06:29 PM PDT     -0.01 knots Slack
Mon -- 08:11 PM PDT     Sunset
Mon -- 08:21 PM PDT     Moonset
Mon -- 09:58 PM PDT     -0.62 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-00.50.80.80.4-0.1-0.4-0.7-0.8-0.9-0.8-0.5-0.10.51.11.41.410.3-0.2-0.4-0.6-0.6-0.5

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.