Thursday, August13, 2020
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Marine Weather and Tides
Keyport, 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 7:59 PM PDT (02:59 UTC) Moonrise 12:00AMMoonset 3:28PM Illumination 23% Phase: Waning Crescent; Moon at 25 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- 722 Pm Pdt Thu Aug 13 2020
Tonight..N wind 5 to 15 kt. Wind waves 2 ft or less.
Fri..N wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Fri night..N wind 5 to 15 kt becoming to 10 kt after midnight. Wind waves 2 ft or less.
Sat..N wind 5 to 15 kt becoming 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft.
Sat night..N wind 5 to 15 kt becoming to 10 kt after midnight. Wind waves 2 ft or less.
Sun..NW wind to 10 kt becoming S in the afternoon. Wind waves 2 ft or less.
Sun night..Variable wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less.
Mon..Light wind becoming variable to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Tue..Light wind becoming variable to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 722 Pm Pdt Thu Aug 13 2020
Synopsis for the northern and central washington coastal and inland waters..High pressure over the northeastern pacific and lower pressure inland will maintain onshore flow through the strait of juan de fuca and northerly winds over the coastal waters through Friday. Thermal low pressure builds up oregon coast late Friday and expands over western washington late Saturday into Sunday for brief offshore flow.


7 Day Forecast for Marine Location Near Keyport, WA
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location: 47.7, -122.63     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 140220 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 720 PM PDT Thu Aug 13 2020

SYNOPSIS. A warm upper ridge will nose into the area with much warmer weather on tap for the weekend. Temperatures will peak across the inland portion of Western Washington Sunday before easing Monday and Tuesday as the ridge weakens.

SHORT TERM /TONIGHT THROUGH SUNDAY/. Clear skies through Friday and high temps on Friday will warm to around 80 in the typically warmer spots. High pressure aloft will build fully over the region Saturday with low level flow becoming offshore during the day - allowing temperatures to warm further. Areas in the interior particularly east of I-5 will reach into the mid to upper 80s and from Tacoma-Olympia southward into the low 90s. Ensemble guidance continuing to advertise warmest temperatures Sunday, trending a bit warmer than previous forecasts with most locations through the interior reaching to the mid 80s to mid 90s. The warmest temperatures continue to be expected east of I-5 and south of Puget sound where temperatures could rise into the upper 90s, especially in the Cascade valleys. Temperatures this warm and widespread represent heat risk concerns with most areas seeing a potential for at least moderate heat risk. The warm temperatures coupled with the dry conditions also highlight fire weather concerns, especially in the Cascades.

LONG TERM /MONDAY THROUGH THURSDAY/. The forecast for Monday continues to reflect a transition day as the upper level ridge shifts eastward and low level onshore flow develops. This will bring relief to the coast with high temperatures dropping back into the 60s. As is often the case, interior will remain warm one more day with high temperatures reaching into the mid to upper 80s for the warmest locations. Overnight lows will cool Monday night back down into the 50s. The forecast continues to reflect a low chance for some spotty, high-based showers over the Cascades. Onshore flow will help bring a bit more cooling to the interior Tuesday with highs reaching in the lower to mid 80s. A more fully developed, and stronger onshore push Wednesday will bring conditions back to normal with increasing clouds, cooler temperatures and even a few passing showers as a trough moves into the area Wednesday into Thursday.

AVIATION. Clear skies. There might a few patches of low marine clouds along the coast around daybreak.

KSEA . Clear skies, north breeze.

MARINE. A small craft advisory is in effect for the typical wly push down the Strait of Juan de Fuca this evening. The afternoon northerly looks a bit breezy along the coast Friday afternoon and there is a small craft advisory up for that. Over the weekend the air mass will heat up under thermally induced low pressure and gradients should be fairly light until marine air pushes back into the area by Sunday evening.

FIRE WEATHER. Significantly warmer temperatures continue to be expected this weekend with maximum values reaching well into the upper 80s and 90s by Sunday. Dry and unstable conditions are also anticipated across the Cascades and lowland areas south of Olympia - which could lead to critical fire weather conditions particularly on Sunday. Minimum relative humidity values in those areas will drop into the 20s with mid-level Haines values of 6. There remains uncertainty regarding the weather pattern beyond Sunday particularly the transition to cooler conditions Monday into 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 . Excessive Heat Watch from Sunday morning through Sunday evening for Bellevue and Vicinity-Bremerton and Vicinity-Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties-Cascades of Whatcom and Skagit Counties-East Puget Sound Lowlands-Everett and Vicinity-Hood Canal Area-Lower Chehalis Valley Area-Seattle and Vicinity-Southwest Interior-Tacoma Area.

PZ . Small Craft Advisory from 1 PM to 11 PM PDT Friday for Coastal Waters From James Island To Point Grenville Out 10 Nm- Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Small Craft Advisory until 5 AM PDT Friday 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
WPOW1 - West Point, WA 11 mi60 min NNE 11 G 12 61°F 1021.3 hPa (+0.0)53°F
46120 13 mi38 min N 5.8 61°F 1020.2 hPa52°F
46125 14 mi32 min 59°F 1020.6 hPa51°F
PTWW1 - 9444900 - Port Townsend, WA 29 mi60 min WSW 8.9 G 15 63°F 56°F1022.3 hPa (+0.0)
46121 30 mi32 min Calm 69°F 1020.5 hPa52°F
TCMW1 - 9446482 - Tacoma Met, WA 31 mi60 min W 4.1 G 5.1
TCNW1 - 9446484 - Tacoma, WA 32 mi60 min 71°F 55°F1021.3 hPa (+0.0)
SISW1 - Smith Island, WA 44 mi30 min WSW 14 G 18

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA17 mi64 minNE 810.00 miFair71°F46°F41%1021.4 hPa
Boeing Field - King County International Airport, WA21 mi67 minVar 510.00 miFair74°F42°F32%1020.6 hPa
Everett Snohomish County, WA24 mi67 minN 710.00 miFair65°F46°F52%1021.7 hPa

Link to 5 minute data for KPWT

Wind History from PWT (wind in knots)
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Last 24hrNE4NE4E3SE3CalmCalmCalmCalmCalmCalmCalmCalmNE3E3CalmCalmCalmE3SW7CalmNE10NE7NE9NE8
1 day agoS5S3SE3E5E4E3CalmCalmCalmCalmCalmCalmCalmCalmCalm454NE6CalmNE5NE64--
2 days agoNE7NE8NE6CalmCalmCalmCalmCalmCalmSW3SW3S3SW4S6S5SW8SW10--Calm4S8SW10SW9
G15
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Tide / Current Tables for Poulsbo, Liberty Bay, Washington
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Poulsbo
Click for Map
Thu -- 12:37 AM PDT     Moonrise
Thu -- 06:04 AM PDT     Sunrise
Thu -- 07:15 AM PDT     1.20 feet Low Tide
Thu -- 03:06 PM PDT     9.39 feet High Tide
Thu -- 04:28 PM PDT     Moonset
Thu -- 07:26 PM PDT     7.35 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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10.19.68.56.95.13.31.91.21.42.33.75.47.18.49.19.49.28.67.97.47.47.98.59.3

Tide / Current Tables for West Point, Seattle, 0.3 miles W of, Washington Current
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West Point
Click for Map
Thu -- 12:37 AM PDT     Moonrise
Thu -- 03:22 AM PDT     -0.77 knots Max Ebb
Thu -- 06:04 AM PDT     Sunrise
Thu -- 07:40 AM PDT     0.00 knots Slack
Thu -- 10:35 AM PDT     0.55 knots Max Flood
Thu -- 02:17 PM PDT     -0.00 knots Slack
Thu -- 04:28 PM PDT     Moonset
Thu -- 04:44 PM PDT     -0.32 knots Max Ebb
Thu -- 08:21 PM PDT     0.00 knots Slack
Thu -- 08:25 PM PDT     Sunset
Thu -- 09:50 PM PDT     0.11 knots Max Flood
Thu -- 11:38 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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-0.2-0.4-0.6-0.8-0.7-0.6-0.4-0.20.10.40.50.50.40.30.1-0.1-0.3-0.3-0.3-0.2-00.10.10.1

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 (22,6,7,8)
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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.