Monday, August10, 2020
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Marine Weather and Tides
Coupeville, 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 5:57AMSunset 8:34PM Monday August 10, 2020 11:33 AM PDT (18:33 UTC) Moonrise 10:44PMMoonset 12:13PM Illumination 57% Phase: Waning Gibbous; Moon at 21 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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PZZ134 Admiralty Inlet- 836 Am Pdt Mon Aug 10 2020
Today..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Tonight..NW wind 10 to 20 kt. Wind waves 1 to 3 ft.
Tue..Variable wind 5 to 15 kt in the morning becoming light. Wind waves 2 ft or less.
Tue night..NW wind 15 to 25 kt becoming W 10 to 20 kt after midnight. Wind waves 2 to 4 ft.
Wed..Light wind becoming se to 10 kt in the afternoon. Wind waves 1 ft or less.
Wed night..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..Light wind becoming nw to 10 kt. Wind waves 1 ft or less.
Fri..Light wind becoming nw to 10 kt. Wind waves 1 ft or less.
PZZ100 836 Am Pdt Mon Aug 10 2020
Synopsis for the northern and central washington coastal and inland waters..Northwesterly flow will persist across the marine areas through at least the middle of the week. SEveral disturbances in that timeframe will result in advisory level conditions over the coastal waters. Strong nocturnal westerly pushes will bring advisory level conditions in the strait of juan de fuca into at least mid-week.


7 Day Forecast for Marine Location Near Coupeville, WA
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location: 48.22, -122.69     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 101525 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 825 AM PDT Mon Aug 10 2020

UPDATE. Areas of stratus along the coast this morning and into the Strait of Juan de Fuca and north Puget Sound with a weak marine push overnight. Clear skies otherwise today with temperatures warmer in the upper 70s to mid 80s across the area, cooler along the coast with mid to upper 60s with the morning clouds and some afternoon sunshine.

SYNOPSIS. Dry and warm across Western Washington today. A weak frontal system will bring increased cloud cover and cooler temperatures Tuesday and Wednesday followed by a return to seasonal temperatures late this week.

SHORT TERM /TODAY THROUGH WEDNESDAY/. Dry and warm conditions will persist across Western Washington today as the east/west ridge axis at the surface will remain draped across the region. Much like yesterday morning, expect some patchy fog across parts of the area this morning, particularly along coastal locales where a thin layer of moisture exists in the boundary layer underneath a relatively dry mid-level layer (evident on the latest CH-10/7.34 um WV loop). Any fog that does develop will quickly mix out with another day of maximum solar heating expected under mostly clear skies. Expect temperatures to rise into the upper 70s to low 80s across most inland locales. It is important to note that the mid- level ridge axis is oriented to the south this morning, as a shortwave trough will be ejected downstream from an upper low located in the eastern Gulf of Alaska. This will yield increasing clouds across all of Western Washington late this afternoon into Tuesday, with a weak front pushing across the region Tuesday. This will yield cooler temperatures through the end of the period. Temperatures in the upper 60s to low 70s expected in most locations Tuesday and Wednesday, with the coolest day of the week on Wednesday. As mentioned last night, guidance continues to trend drier with this feature and it is looking more and more likely that there will be little to no shower activity outside of a few potential sprinkles in the northern Cascades.

Pullin

LONG TERM /THURSDAY THROUGH SUNDAY/. An upper trough over the area will shift inland on Thursday with gradually rising upper heights across the Pacific Northwest on Friday. A few showers could linger over the area, mainly on Thursday, but mostly it looks dry with highs slightly below normal Thursday warming to near normal on Friday.

An upper ridge will cross the area over the weekend. The ridge will not be particularly strong but it should be enough to produce a couple of dry and warm days. Low level onshore flow will continue but turn a bit more northerly which should allow for additional warming. Highs will be mostly in the 70s coast, Strait, and Northwest Interior on Saturday with lower to mid 80s for the interior from about Seattle south. Sunday looks like the warmest day of the week with highs a couple degrees warmer than Saturday.

Schneider

AVIATION. Northwesterly flow aloft this morning becoming more westerly by this afternoon. The atmosphere is dry and generally stable.

Cloud cover over W WA this morning is feast or famine . so to speak . where most interior locations are seeing VFR/clear conditions while locations along the water /coast . Strait and islands/ wrestling with MVFR to IFR conditions. Clouds in these locations are expected to lift and thin out by late morning/early afternoon for VFR conditions area-wide. High clouds will start to move into the area late tonight in advance of passing weather system with marine stratus likely to be an issue for the aforementioned locations near water during the overnight hours.

KSEA . VFR conditions expected through the TAF period. Light and variable wind this morning becoming northerly 7-11 kts. High clouds will gradually filter in through the afternoon with some mid level clouds very late tonight/early Tuesday. 18

MARINE. Northwesterly flow will persist across the marine areas through at least the middle of the week. Several disturbances in that timeframe will yield increases in winds and seas today through Tuesday, with advisory level conditions expected offshore. Swells will remain northwesterly through this timeframe with seas building to 9 to 11 feet on Monday. Seas will gradually decrease through the remainder of the week, with the swell direction becoming southwesterly from Wednesday onward. In addition, strong nocturnal westerly pushes will yield advisory level conditions in the Strait of Juan de Fuca through Wednesday/Thursday. Inherited forecast and headlines look good . so no need for updates with late morning forecast package.

Pullin/18

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 2 AM PDT Tuesday 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 11 AM PDT Tuesday 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.

Small Craft Advisory from 3 PM this afternoon to 5 AM PDT Tuesday 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
PTWW1 - 9444900 - Port Townsend, WA 8 mi45 min WSW 6 G 11 66°F 54°F1020.7 hPa
SISW1 - Smith Island, WA 10 mi23 min NNW 1.9 G 2.9
PBFW1 - Padilla Bay Reserve, WA 21 mi63 min N 7 61°F 1020 hPa58°F
46125 22 mi25 min 58°F 1019.2 hPa55°F
46088 - New Dungeness, WA (Hein Bank) 27 mi23 min WSW 5.8 G 9.7 53°F1020.7 hPa
FRDW1 - 9449880 - Friday Harbor, WA 28 mi57 min NE 1.9 G 4.1 56°F 54°F1020.1 hPa
46118 35 mi38 min W 5.8 57°F 1019.3 hPa57°F
46120 35 mi26 min N 3.9 60°F 1019 hPa56°F
PTAW1 - 9444090 - Port Angeles, WA 40 mi57 min 56°F 53°F1020.6 hPa
WPOW1 - West Point, WA 41 mi33 min NNE 8.9 G 8.9 62°F 1020.2 hPa (-1.0)59°F
CPMW1 44 mi51 min S 2.9 G 4.1 62°F
CHYW1 - 9449424 - Cherry Point, WA 45 mi45 min 1020.4 hPa
46267 49 mi63 min 52°F3 ft

Wind History for Port Townsend, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Whidbey Island Naval Air Station - Ault Field, WA10 mi37 minVar 30.75 miFog/Mist57°F54°F90%1021.4 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA22 mi38 minN 010.00 miFair72°F57°F61%1020 hPa

Link to 5 minute data for KNUW

Wind History from NUW (wind in knots)
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Last 24hrW7W6W5W6W7W8NW3CalmCalmW3SW3SE5S4S3S4SW33S4SW8SW9SW5W533
1 day agoW6W6W7W8W10W9W9SW5W3W3SW3SW3SW5SW5CalmCalmCalmCalmCalmCalmCalmW5W6W6
2 days agoW5NW5NW5NW6N5N3N3NW3NW3NW3NW3NW3CalmW3W3W3CalmW5CalmCalmCalmCalmW53

Tide / Current Tables for Coupeville, Washington
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Coupeville
Click for Map
Mon -- 04:40 AM PDT     3.07 feet Low Tide
Mon -- 05:59 AM PDT     Sunrise
Mon -- 10:50 AM PDT     8.11 feet High Tide
Mon -- 01:13 PM PDT     Moonset
Mon -- 04:14 PM PDT     4.33 feet Low Tide
Mon -- 08:31 PM PDT     Sunset
Mon -- 10:41 PM PDT     10.39 feet High Tide
Mon -- 11:43 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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9.47.864.33.33.13.74.767.17.98.17.76.95.94.94.44.55.46.78.19.410.210.4

Tide / Current Tables for Point Wilson, 2.3 miles NE of, Washington Current
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Point Wilson
Click for MapFlood direction 143 true
Ebb direction 323 true

Mon -- 01:39 AM PDT     -2.46 knots Max Ebb
Mon -- 04:29 AM PDT     0.00 knots Slack
Mon -- 05:59 AM PDT     Sunrise
Mon -- 08:01 AM PDT     0.81 knots Max Flood
Mon -- 10:58 AM PDT     -0.00 knots Slack
Mon -- 01:13 PM PDT     Moonset
Mon -- 01:44 PM PDT     -1.47 knots Max Ebb
Mon -- 03:42 PM PDT     0.00 knots Slack
Mon -- 07:43 PM PDT     1.06 knots Max Flood
Mon -- 08:31 PM PDT     Sunset
Mon -- 10:52 PM PDT     -0.00 knots Slack
Mon -- 11:43 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.7-2.3-2.4-1.7-0.50.20.50.70.80.70.4-0-0.8-1.3-1.4-0.80.10.50.811.10.90.5-0.1

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 (14,3,4,5)
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Ground Weather Radar Station Seattle/Tacoma, WA
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weather_mapweather_map weather_map

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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.