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Marine Weather and Tides Shelton, WA Version 3.4

NOTICE 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 6:16AM

Sunset 8:12PM

Thursday August 22, 2019 7:09 PM PDT (02:09 UTC)

Moonrise 10:37PM

Moonset 12:26PM

Illumination 50%

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.

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7 Day Forecast for Marine Location Near Shelton, WA

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Area Discussion for - Seattle, WA

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Fxus66 ksew 222202 afdsew area forecast discussion national weather service seattle wa 302 pm pdt Thu aug 22 2019 Synopsis High pressure across western washington will be somewhat suppressed by Friday as a low pressure system pushes across central bc through Saturday. With a few showers around, the weekend will be cloudier but with temperatures continuing near normal. Next week a stronger ridge of high pressure will build north into the region through mid week so temperatures will climb above normal with more Sun and drier weather. Short term tonight through Sunday Cloudiness has remained rather stubborn across much of the area today. Soundings indicate a shallow layer of relatively steep lapse rates and higher moisture below 850 mb with a developing subsidence inversion above. High pressure should continue to steadily build in across the area over the next 12 hours with heights peaking around 06z Friday morning. Satellite shows plenty of cloudiness well to our northwest and this will track into the area by daybreak Friday. A trough of low pressure will track well north of the area on Friday, bringing the increase in cloudiness. A few showers will skirt the far northern tier Friday but most everywhere will remain dry with temperatures close to normal. Heights will fall overnight Friday into early Saturday and the main system slides east across central bc. A few showers may be expected on Saturday but limited mostly to the coast, olympic peninsula, and north cascades. Otherwise just cloudy skies and temperatures cooling slightly below normal for Saturday. On Sunday a strong ridge of mid level high pressure will attempt to push northward as the trough over bc exits east. This will bring a slow increase in 500mb heights late Sunday, but temperatures will not respond and should remain near normal. Sunday will be mainly a dry day with mostly to partly cloudy skies. Long term Monday through Thursday For next week the continued theme will be for the attempted northward building of the strong 500 mb ridge to our south. Its full northward push will be somewhat thwarted by another trough pushing through central bc in the mon-tue timeframe. What does appear a good bet is a warming trend from Monday on through mid- week, as 500mb heights should peak in the 583-587dm range by late Tuesday. The surface translation will be for temperatures well into the low and mid 80s for most spots by Tuesday and Wednesday. The surface pattern suggests a thermal trough and thus some degree of low level offshore flow will be present to help boost temps as well. Heights look to begin falling by Thursday as surface high pressure also builds in, ending the offshore component of the flow. This will bring cooling temps by Thursday. Next week looks to be dry and warm to possibly very warm at times, and possibly into the upper 80s south of seattle on Wednesday. Aviation Visible satellite imagery this afternoon certainly reveals bkn cloud cover hanging around longer than originally forecast. Fortunately, gradually clearing can be seen and think by the evening many TAF sites will scatter out. This brief period of clearing, if it can materialize, will be short lived as a weak weather system pulls to the north of washington and brings mid and high clouds into the area. All in all, all remaining MVFR ceilings this afternoon should improve toVFR by the evening. The risk of low

clouds Friday morning appears low, except maybe some patches near hqm. Some areas of fog may develop as well, mostly likely for hqm and olm. OtherwiseVFR will be the rule. Winds gradually turning more westerly this afternoon will become light N NE this evening overnight into Friday at under 10kts. West winds at clm may be exception at around 10kts overnight with enhanced wind down the strait. Ksea... Slow improvement to MVFR conditions from this morning but cigs expected to lift toVFR by early evening and scatter some. Any brief scattering clearing will quickly give way to a mid-high deck between 10k-20k overnight into Friday. Winds turning westerly thru the afternoon then light (5kts or less) N NE overnight into Friday. Kovacik Marine Afternoon surface analysis along the west coast reveals an expansive area of high pressure off the washington and oregon coastline, nosing some into the interior of western washington. Meanwhile, weak troughing was noted across eastern washington with a thermal trough extending up the california coast into parts of western oregon. This setup is allowing for onshore flow today, as winds blow from higher pressure offshore to lower pressure inland. Gradients are weak enough this afternoon to omit any headlines, as earlier winds and swell across outer coastal waters diminished as high pressure built east. As we progress towards evening, typical diurnal push down the strait of juan de fuca will allow for a marginal small craft event. Do not think these winds will bleed into admiralty or northern inland waters so the advisory is capped the central and eastern portion of the strait. Winds across strait will die down Friday morning with little change in the overall sfc pattern. Onshore flow will continue with a weak system trekking to the north of the area. This will produce little in the way of marine impacts, but it will increase mid and high level cloud cover. Another round of westerlies will push down the strait Friday evening, this time stronger, likely also running into admiralty inlet and northern inland waters. There will be potential for gale force winds down the strait Saturday evening with little change in the overall synoptic setup through the middle of next week. Kovacik Hydrology The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated as needed until then. Sew watches warnings advisories Wa... None. Pz... Small craft advisory until 11 am pdt this morning 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-northern inland waters including the san juan islands. Small craft advisory from 6 pm this evening to 3 am pdt Friday for central u.S. Waters strait of juan de fuca-east entrance u.S. Waters strait of juan de fuca.

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
46121	19 mi	46 min		67°F			1017.8 hPa	56°F
TCMW1 - 9446482 - Tacoma Met, WA	35 mi	57 min	WNW 2.9 G 4.1
TCNW1 - 9446484 - Tacoma, WA	36 mi	57 min		69°F	56°F		1018.2 hPa
WPOW1 - West Point, WA	47 mi	69 min	S 4.1 G 4.1	62°F			1018 hPa (-1.0)	55°F

Wind History for Tacoma MET, WA

(wind in knots)    EDIT      (on/off)   Help

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Shelton, Shelton Sanderson Field, WA	4 mi	16 min	N 0	10.00 mi	Mostly Cloudy	70°F	55°F	59%	1016.7 hPa
Olympia, Olympia Airport, WA	18 mi	15 min	Var 3	10.00 mi	Fair	70°F	53°F	55%	1017.5 hPa

Link to 5 minute data for KSHN

Wind History from SHN (wind in knots)

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Tide / Current Tables for Shelton, Washington

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Tide / Current Tables for Hammersley Inlet, W of Skookum Pt, Washington Current

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Weather Map and Satellite Images

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GOES 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

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Wind Forecast for Seattle, WA (22,6,7,8)

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Ground Weather Radar Station Seattle/Tacoma, WA

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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.