Friday, April3, 2020
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Marine Weather and Tides
Shelton, 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 6:43AMSunset 7:45PM Friday April 3, 2020 5:07 PM PDT (00:07 UTC) Moonrise 1:09PMMoonset 3:52AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 238 Pm Pdt Fri Apr 3 2020
Tonight..NW wind 10 to 20 kt becoming se to 10 kt after midnight. Wind waves 1 to 3 ft subsiding to 1 ft or less after midnight. A chance of showers in the evening.
Sat..Light wind becoming N 5 to 15 kt in the afternoon. Wind waves less than 1 ft becoming 2 ft or less in the afternoon.
Sat night..N wind 10 to 20 kt becoming 5 to 15 kt after midnight. Wind waves 1 to 3 ft. A slight chance of rain.
Sun..N wind to 10 kt. Wind waves 1 ft or less.
Sun night..N wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Mon night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Tue..Light wind. Wind waves less than 1 ft.
Wed..Light wind becoming nw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 238 Pm Pdt Fri Apr 3 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will ease tonight. Strongest winds this evening will be through the strait of juan de fuca. Winds will eventually turn north to northeast by Saturday as high pressure builds into british columbia and lower pressure moves into oregon. The flow will turn onshore again early next week with high pressure over the ne pacific.


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 032201 CCA AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 250 PM PDT Fri Apr 3 2020

SYNOPSIS. Lowland rain and mountain snow showers will continue today as another low pressure system affects the region. Drier conditions are expected on Saturday before a chance of showers returns for Sunday as a trough of low pressure moves onshore south of the area. A building ridge of high pressure is expected to lead to dry and warmer conditions from Monday into the middle part of the coming week.

SHORT TERM /TODAY THROUGH SUNDAY/. Convergence zone from this morning shifting southward to cover mainly Snohomish county this afternoon. Some showers within this area have produced brief periods of small hail. Near term models suggest that this feature may drift south into King County during the late afternoon/early evening before dissipating. Remainder of the CWA still seeing some scattered activity that . much like the past few days . will linger into the early evening before also tapering off.

Near term models remain consistent with earlier solutions regarding weak upper level ridge for Saturday with a brief spat of dry conditions as well as bringing up moisture from an upper low passing to the south into the southern portions of the CWA Saturday night into Sunday. Sunday sees this consensus break down as the GFS is still trying to link the aforementioned southern low with an upper level trough well to the north deep in Canada while the ECMWF continues to look like the more reasonable solution . keeping moisture generally to the south . possibly spilling over into the farthest southern portions of the CWA Sunday . keeping at least the area from Seattle north dry. Temps will once again be below normal today before starting to warm Saturday and Sunday with afternoon highs Saturday generally in the lower 50s then getting near normal with mid 50s expected Sunday. 18

LONG TERM /MONDAY THROUGH THURSDAY/. Models agree on a Pacific upper level ridge nudging into the region starting Monday bringing what looks to be the first extended period of dry weather the area has seen in a while . as this system will be the primary weather factor at least into the middle of next week. In a slight change from inherited forecast . this dry period even seems to stretch into Thursday . drying out the remainder of the forecast period. Have trended the forecast more in that direction . but left slight chance PoPs in as this is still a bit of a new solution. Should models remain consistent . could end up seeing future forecast zeroing out said PoPs. Temps during this period look to get the area back on track when it comes to seasonal normals . with highs in the upper 50s for Monday and Tuesday and lower to mid 60s possible by mid- week Spring may have taken the long way around. but it might finally be making its way to the Pac NW after all. 18

AVIATION. A broad upper level trough is over the Pac NW with isolated to scattered showers across western WA. The flow aloft is northerly. The air mass is moist with pockets of MVFR cigs in showers. Showers will be focused over Snohomish and King counties tonight with a convergence zone. Showers will gradually taper off after midnight. Patchy low clouds and MVFR cigs are possible Saturday morning. Weak high pressure will bring drier weather toward the afternoon. 33

KSEA . Showers with a convergence zone in the vicinity this evening, then tapering off after midnight. Wind shift possible out of the N between 00-06z. Drier weather on Saturday with N winds. 33

MARINE. Onshore flow will continue across western WA this afternoon and evening. Strongest wind/waves will be through the Strait of Juan de Fuca and a Small Craft Advisory remains in effect. Winds will ease tonight. Low pressure will shift toward OR/CA over the weekend with generally light N/NE flow over western WA. The flow will turn onshore again by Monday as high pressure builds over the NE Pacific. 33

HYDROLOGY. No river flooding is expected over the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory until 11 PM PDT this evening for Central U.S. Waters Strait Of Juan De Fuca-East 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
46121 19 mi41 min 9.7 46°F 1017.2 hPa33°F
TCMW1 - 9446482 - Tacoma Met, WA 35 mi67 min SSW 9.9 G 17
TCNW1 - 9446484 - Tacoma, WA 36 mi67 min 47°F 48°F1017.6 hPa (-1.5)
WPOW1 - West Point, WA 47 mi67 min NNE 15 G 17 42°F 1016.9 hPa (-0.4)37°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Shelton, Shelton Sanderson Field, WA4 mi74 minW 16 G 2410.00 miOvercast44°F33°F65%1017.5 hPa
Olympia, Olympia Airport, WA18 mi73 minSW 810.00 miOvercast45°F33°F63%1017.8 hPa

Link to 5 minute data for KSHN

Wind History from SHN (wind in knots)
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Last 24hr--W10SW7SW7SW7SW7SW6SW5SW3W9W4SW5SW6W10SW9SW8SW12SW12W11
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1 day agoN10N8N4W3CalmW4NW3CalmW3NW3W3CalmW6CalmW4SW6SW6SW8W7SW10
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2 days agoSW11
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W13SW4SW7SW5SW7CalmW4W4CalmCalmCalmCalmNE3N3N4CalmCalmSE6Calm3NW5NW8N7

Tide / Current Tables for Shelton, Washington
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Shelton
Click for Map
Fri -- 04:10 AM PDT     13.78 feet High Tide
Fri -- 04:51 AM PDT     Moonset
Fri -- 06:46 AM PDT     Sunrise
Fri -- 10:30 AM PDT     6.33 feet Low Tide
Fri -- 02:09 PM PDT     Moonrise
Fri -- 02:13 PM PDT     11.03 feet High Tide
Fri -- 07:45 PM PDT     Sunset
Fri -- 10:04 PM PDT     0.25 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.68.711.313.113.813.512.410.68.87.26.46.57.89.71110.89.98.46.54.42.40.90.30.9

Tide / Current Tables for Hammersley Inlet, W of Skookum Pt, Washington Current
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Hammersley Inlet
Click for Map
Fri -- 12:34 AM PDT     1.71 knots Max Flood
Fri -- 04:09 AM PDT     -0.00 knots Slack
Fri -- 04:51 AM PDT     Moonset
Fri -- 06:45 AM PDT     Sunrise
Fri -- 07:17 AM PDT     -0.85 knots Max Ebb
Fri -- 10:28 AM PDT     0.00 knots Slack
Fri -- 12:44 PM PDT     0.65 knots Max Flood
Fri -- 02:08 PM PDT     Moonrise
Fri -- 02:21 PM PDT     -0.00 knots Slack
Fri -- 06:15 PM PDT     -1.63 knots Max Ebb
Fri -- 07:45 PM PDT     Sunset
Fri -- 10:10 PM PDT     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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1.61.71.30.70.1-0.4-0.7-0.8-0.8-0.7-0.30.20.60.60.2-0.4-0.9-1.4-1.6-1.6-1.3-0.8-0.20.6

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 (20,4,5,8)
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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.