Thursday, August13, 2020
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Marine Weather and Tides
Allyn, 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 6:03AMSunset 8:27PM Thursday August 13, 2020 12:58 AM PDT (07:58 UTC) Moonrise 12:00AMMoonset 3:28PM Illumination 31% Phase: Waning Crescent; Moon at 24 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- 820 Pm Pdt Wed Aug 12 2020
Tonight..N wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..SW wind to 10 kt becoming ne in the afternoon. Wind waves 1 ft or less.
Thu night..NE wind 5 to 15 kt. Wind waves 2 ft or less.
Fri..N wind to 10 kt. Wind waves 1 ft or less.
Fri night..NE wind to 10 kt. Wind waves 1 ft or less.
Sat..N wind to 10 kt. Wind waves 1 ft or less.
Sat night..N wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Sun..Light wind becoming variable to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Mon..Light wind becoming variable to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 820 Pm Pdt Wed Aug 12 2020
Synopsis for the northern and central washington coastal and inland waters..A typical summertime weather regime will persist through the end of the week with no significant weather systems. Thermally induced low pressure will expand over western washington Saturday night and Sunday.


7 Day Forecast for Marine Location Near Allyn, WA
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location: 47.39, -122.91     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 130344 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 845 PM PDT Wed Aug 12 2020

SYNOPSIS. Partly cloudy skies will give way to more sunshine as high pressure builds into the region Thursday and Friday. Much warmer weather will arrive over the weekend as high pressure centered near the four corners expands into the Pacific Northwest.

SHORT TERM /TONIGHT THROUGH SATURDAY/. There is a patch of clouds in the Puget Sound area and there are high clouds arriving--so things do not look good for watching Perseids tonight. An upper level trough is departing to the east but the upper ridge will not build strongly into the area til the end of the week. Temps will still be a little cool on Thursday, then close pretty average to average on Friday. For Saturday Western Washington will see mainly 80s across the lowlands--and a few spots south of Olympia may reach the 90 degree mark.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Next week is characterized by a large amount of uncertainty regarding the ridge and its subsequent break-down. Regardless, Sunday should be the peak of the heat with temperatures well into the 80s to low 90s across the lowlands. Areas south of Olympia and in the Cascade valleys may see the mid to upper 90s. This will yield a moderate to high heat risk. Overnight lows in the upper 50s to low 60s should provide a bit of relief though.

Past Sunday, uncertainty grows as deterministic models and their respective ensemble solutions are struggling with small-scale features. This is largely in part to how they handle the remnants of now Tropical Storm Elida as it rides north from it's current location west of the Baja Peninsula. Latest GFS runs surge some monsoonal moisture north along the western periphery of the ridge late Sunday into Tuesday for isolated showers (and maybe even a thunderstorm or two along the Cascades) with cooler temperatures. These solutions also swing an upper level trough through western WA by Wednesday with a few showers and further cooling. ECMWF and its ensembles are more bullish - holding onto the ridge for much of next week with mostly dry weather and slightly warmer temperatures than GFS/GEFS. For now, have stuck with a blended approach which leads to cooler temperatures than the weekend and periodic chances for showers, especially across the Cascades, into mid-week.

AVIATION. There is a layer of clouds around 070 in the lee of the Olympics, and there is increasing cirrus. Areas of low marine stratus should be confined to the coast Thursday morning and give way to afternoon sunshine.

KSEA . Some clouds around 070 this evening, and high clouds. Low stratus is not expected Thursday morning.

MARINE. Typical summer regime into the end of the week with higher pressure offshore and low pressure inland and typical diurnal winds. The Strait of Juan de Fuca will have evening small craft advisory west winds again Thursday--and perhaps Friday evening. Over the weekend thermal low pressure will set up over the area and the evening westerly will give out.

FIRE WEATHER. Rapid-warm up expected this weekend with temperatures well into the 80s and 90s by Sunday. Dry and unstable conditions are expected to develop across the Cascades and lowland areas south of Olympia which could lead to critical fire weather conditions on Sunday. Minimum relative humidity values in those areas will drop into in the teens to 20s with mid-level Haines values of 6. Will continue to monitor for the possibility of any headlines needed over the next few days. There is some uncertainty regarding the weather pattern past Sunday but cooler conditions are likely for Monday and Tuesday.

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 from 6 PM this evening to 6 AM PDT Thursday 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 12 mi46 min 1.9 58°F 1019.1 hPa46°F
TCMW1 - 9446482 - Tacoma Met, WA 27 mi65 min WNW 6 G 7
TCNW1 - 9446484 - Tacoma, WA 28 mi65 min 61°F 55°F1019.7 hPa
WPOW1 - West Point, WA 31 mi59 min N 9.9 G 11 58°F 1019.3 hPa (+0.4)52°F
46120 37 mi46 min NNE 1.9 58°F 1018.2 hPa48°F
46125 39 mi42 min 57°F 1018.5 hPa50°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA10 mi63 minN 010.00 miFair50°F46°F86%1019.8 hPa
Shelton, Shelton Sanderson Field, WA17 mi66 minW 610.00 miFair53°F45°F74%1018.8 hPa
Tacoma, Tacoma Narrows Airport, WA19 mi66 minW 310.00 miMostly Cloudy56°F44°F65%1019.3 hPa

Link to 5 minute data for KPWT

Wind History from PWT (wind in knots)
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Last 24hrE3CalmCalmCalmCalmCalmCalmCalmCalmCalm454NE6CalmNE5NE64--NE4NE4E3SE3Calm
1 day agoCalmCalmCalmCalmSW3SW3S3SW4S6S5SW8SW10--Calm4S8SW10SW9
G15
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2 days agoNE4N3CalmCalmCalmCalmCalmNE44E5E5Calm6E9E7NE7NE10NE9N9NE7NE8NE6CalmCalm

Tide / Current Tables for Lynch Cove Dock, Washington
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Lynch Cove Dock
Click for Map
Thu -- 12:39 AM PDT     Moonrise
Thu -- 06:06 AM PDT     Sunrise
Thu -- 07:20 AM PDT     1.29 feet Low Tide
Thu -- 03:01 PM PDT     9.66 feet High Tide
Thu -- 04:28 PM PDT     Moonset
Thu -- 07:31 PM PDT     7.86 feet Low Tide
Thu -- 08:25 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.39.88.77.15.33.52.11.31.52.43.85.67.38.79.49.79.58.98.37.97.98.399.7

Tide / Current Tables for Colville Island, 1 miles SSE of, Washington Current
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Colville Island
Click for Map
Thu -- 12:39 AM PDT     Moonrise
Thu -- 04:59 AM PDT     -2.52 knots Max Ebb
Thu -- 06:05 AM PDT     Sunrise
Thu -- 09:28 AM PDT     0.00 knots Slack
Thu -- 11:43 AM PDT     0.76 knots Max Flood
Thu -- 04:27 PM PDT     Moonset
Thu -- 04:45 PM PDT     -0.00 knots Slack
Thu -- 06:02 PM PDT     -0.49 knots Max Ebb
Thu -- 08:25 PM PDT     Sunset
Thu -- 09:27 PM PDT     0.00 knots Slack
Thu -- 10:58 PM PDT     0.24 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.7-1.3-1.9-2.3-2.5-2.3-1.8-1.1-0.40.30.70.80.70.70.50.2-0.1-0.5-0.4-0.3-0.10.10.2

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 (3,6,7,8)
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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 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.