Wednesday, April8, 2020
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Marine Weather and Tides
Portsend, 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 6:30AMSunset 7:53PM Wednesday April 8, 2020 4:39 AM PDT (11:39 UTC) Moonrise 7:58PMMoonset 6:18AM Illumination 100% Phase: Full Moon; Moon at 15 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- 205 Am Pdt Wed Apr 8 2020
Today..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Tonight..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Thu night..NW wind to 10 kt. Wind waves 1 ft or less.
Fri..Light wind. Wind waves less than 1 ft.
Fri night..Variable wind to 10 kt. Wind waves 1 ft or less.
Sat..Variable wind to 10 kt becoming nw 5 to 15 kt. Wind waves 2 ft or less.
Sun..N wind to 10 kt. Wind waves 1 ft or less.
PZZ100 205 Am Pdt Wed Apr 8 2020
Synopsis for the northern and central washington coastal and inland waters..Light northerly flow today. Onshore flow will return late in the week as a series of weak systems affect the area.


7 Day Forecast for Marine Location Near Portsend, WA
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location: 48.1, -122.76     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 080945 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 245 AM PDT Wed Apr 8 2020

SYNOPSIS. An overall quiet weather pattern is expected over the next 7 days. Weak ridging today will make for dry and mostly sunny conditions, with this feature flattening by Thursday as NW flow aloft sets in. A weak front will increase cloud cover through Friday, with a weak wave then bringing a few showers Friday night/Saturday. Dry conditions then return through early next week.

SHORT TERM /TODAY THROUGH FRIDAY/. Around 09z this morning the synoptic pattern was characterized by a blocking pattern across the NE Pacific (more specifically, an omega block), with ridging portion extending from the Pacific into the Pacific Northwest and downstream closed low centered just offshore the southern California coastline. A split-flow pattern then exists downstream of this blocking feature across the majority of the CONUS east of the Rockies. In the lower levels, a weak trough was noted from northern California to just offshore the WA and OR coasts, with Canadian high pressure nosing down from BC and Alberta into the Northern Rockies and Northern Great Plains.

Based on the pattern described above, conditions are relatively benign across western Washington this morning, and this will continue through the day today. The lower level flow will argue for weak offshore flow given light gradients, so marine stratus is not expected this morning (tho spotty patches of fog may develop). Overall today expect nothing more than a few passing high clouds. High temperatures should reach the lower 60s :)

Later this evening and overnight, higher level cloud cover is likely to increase as an organized shortwave trough traverses the Gulf of Alaska into northern BC and carries a frontal boundary with it. High/mid level cloud cover is likely to stick around through much of Thursday and into Friday as the frontal boundary slowly sinks south towards the local area. The parent shortwave is expected to evolve into a closed area of low pressure across the NW Territories Thursday night and dig slowly SE into Friday morning. This will help turn the upper level flow across the Pacific Northwest more NW, which will allow some of the lingering moisture from the dissolving frontal boundary to spill into the area. Extra cloud cover is likely as this occurs, though will likely see generally dry conditions (cannot rule out a few late day showers Friday, esp across the higher terrain). Overall, a tranquil and dry short term forecast is in store.

Kovacik

LONG TERM /SATURDAY THROUGH TUESDAY/. Northwest flow aloft will carry into the long term forecast period across the Pacific Northwest. A shortwave trough will migrate through the upper level flow Friday night into early Saturday morning. It appears organized enough to generate some shower activity across the eastern half of the CWA, again particularly the higher terrain. Best/deeper moisture may remain displaced to the east of the area across the Northern Rockies.

The passage of this shortwave trough looks to initiate a pattern change. As the shortwave trough moves south, model guidance is suggestive of it merging with a southern stream shortwave trough and assist in the deepening of a longwave trough across the central CONUS, with a highly amplified ridge becoming reinforced over Alaska. This will place western Washington in continued dry NW aloft in between these features through the remainder of the weekend and into early next week. Ensemble guidance thereafter would argue right now for slight progression of the pattern through mid week, which would bring ridge closer to the region and keep for dry conditions.

Kovacik

AVIATION. Northwest flow aloft with light northerly flow at the surface. A few high clouds otherwise clear skies. Some patchy fog may form across the southwest interior this morning but expect coverage to be limited. VFR conditions through the period. KSEA . VFR with northerly winds 5 to 10 kts.

CEO

MARINE. Northerly flow today with onshore flow returning later in the week as a few weak systems brush the area. May be enough for small craft advisory level winds through the Strait at times Thursday and Friday. Otherwise, quiet weather continues.

CEO

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

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
PTWW1 - 9444900 - Port Townsend, WA 1 mi52 min W 7 G 8.9 44°F 47°F1027.1 hPa
46125 15 mi37 min 45°F 1025.5 hPa40°F
SISW1 - Smith Island, WA 16 mi30 min WNW 5.1 G 6 45°F 1026.5 hPa41°F
46088 - New Dungeness, WA (Hein Bank) 27 mi40 min NNW 5.8 G 9.7 47°F1027.3 hPa
46120 30 mi31 min 46°F 1025.2 hPa42°F
PBFW1 - Padilla Bay Reserve, WA 30 mi70 min ENE 2.9 38°F 1026 hPa32°F
FRDW1 - 9449880 - Friday Harbor, WA 34 mi64 min Calm G 4.1 44°F 47°F1026.4 hPa
WPOW1 - West Point, WA 35 mi40 min N 9.9 G 11 46°F 1026.3 hPa (+0.5)44°F
PTAW1 - 9444090 - Port Angeles, WA 36 mi64 min SSW 6 G 7 38°F 47°F1026.7 hPa
46267 45 mi40 min 46°F2 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, WA19 mi44 minESE 510.00 miPartly Cloudy40°F34°F79%1027.7 hPa

Link to 5 minute data for KNUW

Wind History from NUW (wind in knots)
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Last 24hrW9W11W9W10SW8SW6SW7SW9W8W6W6NW5NW4NW4N4N4CalmCalmW4CalmCalmCalmCalmSE5
1 day agoCalmSE3SE3SE5CalmW44NW6NW5W5W6NW3W3W5SW9W5SW7SW10SW11W13W15W15
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2 days agoNE4CalmCalmCalmNE3NW5NW6NW7NW9NW10NW8NW7N7NW5NW4CalmW5NW6W6W6N3N3CalmS4

Tide / Current Tables for Point Hudson, Washington
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Point Hudson
Click for Map
Wed -- 05:02 AM PDT     8.96 feet High Tide
Wed -- 06:33 AM PDT     Sunrise
Wed -- 07:18 AM PDT     Moonset
Wed -- 10:57 AM PDT     0.72 feet Low Tide
Wed -- 05:44 PM PDT     8.41 feet High Tide
Wed -- 07:52 PM PDT     Sunset
Wed -- 08:58 PM PDT     Moonrise
Wed -- 11:10 PM PDT     2.44 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.53.95.67.28.498.56.94.82.71.20.71.22.445.67.18.28.47.76.24.43.12.5

Tide / Current Tables for Portsend, 0.5 miles S of Point Hudson, Washington Current
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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 (7,2,3,4)
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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.