Friday, July3, 2020
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Marine Weather and Tides
Navy Yard City, 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 5:17AMSunset 9:12PM Friday July 3, 2020 7:21 AM PDT (14:21 UTC) Moonrise 7:10PMMoonset 2:51AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 241 Am Pdt Fri Jul 3 2020
Today..SW wind to 10 kt. Wind waves 1 ft or less. A chance of showers.
Tonight..NW wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less. A slight chance of showers in the evening.
Sat..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Sat night..N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Sun..Light wind. Wind waves less than 1 ft.
Sun night..NW wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less.
Mon..S wind to 10 kt becoming variable. Wind waves 1 ft or less.
Tue..S wind to 10 kt becoming nw. Wind waves 1 ft or less.
PZZ100 241 Am Pdt Fri Jul 3 2020
Synopsis for the northern and central washington coastal and inland waters..A weak weather system will move through western washington today but pressure gradients will remain light. Onshore flow will likely increase later in the weekend or early next week but no significant weather systems are expected.


7 Day Forecast for Marine Location Near Navy Yard City CDP, WA
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location: 47.55, -122.65     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 031053 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 353 AM PDT Fri Jul 3 2020

SYNOPSIS. Upper level trough over the area through tonight will shift east Saturday. Another upper level trough will move over western Washington Monday. Cool unsettled weather will continue through the middle of the week.

SHORT TERM /TODAY THROUGH SUNDAY/. Main message this morning is summer is nowhere to be found for the next week for western Washington. Upper level trough over the area today with weak low level onshore flow. This combination will keep skies at least mostly cloudy. Shower chances will range from likely near the Canadian border to none over the south Cascades. With plenty of cloudy cover and a little cooler than normal temperatures aloft highs today will remain below normal, mostly in the 60s.

Upper level trough hanging over the area and weakening tonight. Shower chances confined to the northeast corner of western Washington this evening. Surface gradients a little northerly to start the evening with the gradients turning light onshore again by early Saturday morning. No upper level ridging to provide some subsidence to clear out the marine layer keeping skies mostly cloudy. Lows tonight in the upper 40s to mid 50s.

Northwesterly flow aloft over Western Washington for the 4th of July as the upper level trough moves east. Light onshore gradients will keep skies mostly cloudy in the morning. With the gradients turning northerly in the afternoon some sunshine likely for most of the interior. Highs will warm a little but still just be in the mid 60s to lower 70s.

Little change in the pattern Saturday night and Sunday with west northwesterly flow aloft and low level onshore flow. Shallow marine layer Sunday morning getting dissipated by the early July sunshine resulting in mostly sunny skies for at least the interior by midday. Even with the sunshine highs will remain near normal, mid 60s to mid 70s. Lows Sunday morning in the upper 40s to mid 50s.

LONG TERM /MONDAY THROUGH THURSDAY/. In what will shock nobody at this point another upper level trough drops down over western Washington Monday bringing more clouds and showers back to the forecast. Trough remaining over the area Tuesday. Some differences in the models for Wednesday and Thursday with the GFS keeping the trough over the region while the operational ECMWF kicks the trough to the east. ECMWF ensembles telling a different story with the highest QPF values ( still very light less than a tenth of an inch ) Tuesday night and Wednesday and about a third of the ensemble solutions showing light precipitation Thursday. Will keep showers in the forecast for Wednesday and Thursday. Temperatures will remain a little below normal for most of the period with highs in the 60s and lower 70s. Felton

AVIATION. An upper trough will bring some shower activity to the area today, mainly in the north part of Western Washington. The winds aloft are southwesterly. There will probably be a few areas of lower cigs with the shower activity but there isn't much in the way of onshore flow and the weather system is rather weak.

KSEA . A little shower activity ought to reach Seattle later this afternoon and the wrfgfs shows a little north wind developing early this evening.

MARINE. Pressure gradients are going to be pretty light today and Saturday with 5-15kt winds in a few areas and mainly a lot of light and variable wind. Onshore flow will probably pick up later in the weekend and early next week but the overall weather pattern does not change with an upper trough near or over the region and light low level onshore flow into Western Washington.

CLIMATE. With an average high of 66.5 degrees ( 66 on the 1st and 67 yesterday ) this is the coldest first two days of July in Seattle since 2010. Felton

HYDROLOGY. The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated as needed.

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . None.

www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 14 mi82 min S 11 G 12 55°F 1016.9 hPa (+0.5)53°F
46121 19 mi33 min Calm 56°F 1017.4 hPa52°F
46120 20 mi32 min S 5.8 56°F 1016.1 hPa51°F
TCMW1 - 9446482 - Tacoma Met, WA 23 mi52 min SW 1.9 G 5.1
TCNW1 - 9446484 - Tacoma, WA 23 mi52 min 57°F 53°F1017.9 hPa
46125 25 mi35 min 53°F 1016.1 hPa51°F
PTWW1 - 9444900 - Port Townsend, WA 39 mi52 min Calm G 0 53°F 52°F1017.3 hPa

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, WA8 mi26 minS 610.00 miOvercast53°F51°F93%1017.5 hPa
Boeing Field - King County International Airport, WA19 mi29 minS 710.00 miOvercast57°F48°F74%1017.2 hPa
Seattle, Seattle-Tacoma International Airport, WA20 mi29 minSSW 410.00 miOvercast56°F50°F81%1017.9 hPa
Tacoma, Tacoma Narrows Airport, WA20 mi29 minS 610.00 miOvercast53°F48°F86%1017.3 hPa
Renton Municipal Airport, WA23 mi29 minS 310.00 miOvercast58°F50°F75%1017.8 hPa

Link to 5 minute data for KPWT

Wind History from PWT (wind in knots)
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S8SW12--SW11SW8S10S7S6S4S4S7SW7S5S6S6S6S7

Tide / Current Tables for Bremerton, Washington
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Bremerton
Click for Map
Fri -- 03:02 AM PDT     11.92 feet High Tide
Fri -- 03:51 AM PDT     Moonset
Fri -- 05:18 AM PDT     Sunrise
Fri -- 10:32 AM PDT     -2.55 feet Low Tide
Fri -- 06:00 PM PDT     11.88 feet High Tide
Fri -- 08:10 PM PDT     Moonrise
Fri -- 09:10 PM PDT     Sunset
Fri -- 10:56 PM PDT     7.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.510.111.411.911.4107.74.81.7-0.9-2.3-2.4-11.44.57.59.911.411.911.410.28.77.57.2

Tide / Current Tables for Port Washington Narrows, North Entrance of, Washington Current
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Port Washington Narrows
Click for Map
Fri -- 01:21 AM PDT     1.29 knots Max Flood
Fri -- 03:51 AM PDT     Moonset
Fri -- 04:04 AM PDT     -0.00 knots Slack
Fri -- 05:18 AM PDT     Sunrise
Fri -- 08:39 AM PDT     -3.21 knots Max Ebb
Fri -- 10:48 AM PDT     0.01 knots Slack
Fri -- 02:44 PM PDT     4.29 knots Max Flood
Fri -- 07:06 PM PDT     -0.00 knots Slack
Fri -- 08:10 PM PDT     Moonrise
Fri -- 09:10 PM PDT     Sunset
Fri -- 10:01 PM PDT     -1.54 knots Max Ebb
Fri -- 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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0.91.31.20.80.1-0.8-1.7-2.6-3.1-3.1-1.80.423.34.14.33.82.81.60.2-0.8-1.3-1.5-0.8

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 (10,2,3,4)
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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.