Friday, July10, 2020
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Marine Weather and Tides
Birch Bay, 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 9:16PM Friday July 10, 2020 8:31 AM PDT (15:31 UTC) Moonrise 11:26PMMoonset 10:10AM Illumination 74% Phase: Waning Gibbous; Moon at 20 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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PZZ133 Northern Inland Waters Including The San Juan Islands- 809 Am Pdt Fri Jul 10 2020
Today..S wind 5 to 15 kt. Wind waves 2 ft or less.
Tonight..S wind 5 to 15 kt. Wind waves 2 ft or less.
Sat..S wind to 10 kt becoming sw 5 to 15 kt in the afternoon. Wind waves 2 ft or less. A slight chance of rain in the afternoon.
Sat night..W wind 5 to 15 kt becoming sw 10 to 20 kt after midnight. Wind waves 1 to 3 ft.
Sun..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Sun night..W wind 10 to 20 kt. Wind waves 1 to 3 ft.
Mon..SW wind 5 to 15 kt easing to 10 kt. Wind waves 2 ft or less.
Tue..Light wind becoming sw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 809 Am Pdt Fri Jul 10 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will continue into early next week with high pressure offshore and low pressure inland.


7 Day Forecast for Marine Location Near Birch Bay, WA
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location: 48.75, -122.9     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 101518 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 818 AM PDT Fri Jul 10 2020

SYNOPSIS. Dry weather and slightly warmer temperatures return for Friday into much of Saturday before another weak system brings a chance for showers on Sunday. The start of next work week is looking dry.

SHORT TERM /TODAY THROUGH SUNDAY/. Low level stratus clouds pushed inland overnight covering much of the lowlands this morning. But onshore pressure gradients are fairly weak and we should see clouds lifting and scattering this afternoon/evening. Temps today are close to normal with highs in the interior reaching the low to mid 70s. Cooler along the coast in the 60s. 33

Previous discussion . W WA looks to be in store for a dry day today as upper level ridging traverses the area and even as the ridge axis moves east of the area this afternoon. An upper level low off the coast will try to push inland Saturday but neither the deterministic models nor the ensembles are particularly excited about the prospect of precip with this system as it appears to fall apart as it crosses the area. This system will linger into Sunday . again with PoPs having a hard time getting out of chance category . save for locations in higher elevations. A Pacific upper level ridge will then start to nudge into the area for dry conditions to resume Sunday evening.

Not much fluctuation in temps today and Saturday with highs in the interior lowlands generally in the lower to mid 70s while coastal locations can look forward to more mild conditions with highs generally in the mid 60s. Sunday will see conditions cool slightly thanks to the passing system with the interior lowlands generally around 70 and the coast in the lower 60s.

LONG TERM /MONDAY THROUGH THURSDAY/. Previous discussion . Upper level ridging will bring a return to dry conditions Monday and most of Tuesday. Deterministic models are trying to show some sort of weak disturbance or front that wants to try and dip down into W WA Tuesday evening . but neither model really pulls it off. Ensemble members . however . are all over the board which is impacting PoPs in the forecast. While the general consensus remains unimpressed and would wager that the Tuesday night thru Wednesday morning time frame will likely remain dry . the ensemble mean does rise somewhat and as such . PoPs are present in the forecast. The ECMWF shows a better organized lobe off an upper level low over central Canada that should result in some precip over the area . however the GFS keeps things to the north and the ensembles maintain their general ennui/apathy toward any significant precip . once again keeping PoPs generally slight chance to low-end chance. Deterministic models in agreement that a weak upper level ridge should bring dry conditions Thursday while ensembles remain in their emo phase with low end PoPs in the forecast closing out the long term in a similarly adolescent mindset of low confidence. 18

AVIATION. Westerly flow aloft will become southwesterly late tonight as another upper trough moves into the offshore waters. Morning marine layer clouds will burn off to afternoon sunshine. Some low stratus will return to the coast tonight.

KSEA . Typical morning clouds and afternoon sun--clear skies tonight and Saturday, TAF looks fine.

MARINE. Surface high pressure will remain over the coastal waters with lower pressure east of the Cascades over the next several days. Weak weather systems passing through the region will increase the onshore flow from time to time. Westerlies in the central and eastern portions of the Strait of Juan de Fuca will reach small craft advisory criteria most afternoons/evenings over the next few days, otherwise winds and seas will remain rather quiet.

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 5 PM this afternoon to 3 AM PDT Saturday 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
CHYW1 - 9449424 - Cherry Point, WA 11 mi43 min 1021.4 hPa
CPMW1 11 mi49 min SE 6 G 7 56°F
FRDW1 - 9449880 - Friday Harbor, WA 15 mi55 min SW 7 G 8.9 55°F 51°F1021 hPa
PBFW1 - Padilla Bay Reserve, WA 30 mi61 min S 4.1 57°F 1021 hPa52°F
SISW1 - Smith Island, WA 30 mi131 min SSW 8 G 8.9 53°F 1020.9 hPa49°F
46088 - New Dungeness, WA (Hein Bank) 32 mi171 min WSW 12 G 16 53°F 1020.4 hPa50°F
PTWW1 - 9444900 - Port Townsend, WA 45 mi43 min Calm G 1 55°F 51°F1022.5 hPa

Wind History for Cherry Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eastsound, Orcas Island Airport, WA3 mi36 minS 810.00 miOvercast59°F50°F72%1020.7 hPa
Friday Harbor Airport, WA17 mi38 minSW 410.00 miPartly Cloudy57°F48°F74%1021.4 hPa
Bellingham, Bellingham International Airport, WA19 mi38 minS 610.00 miPartly Cloudy60°F50°F70%1021.8 hPa

Link to 5 minute data for KORS

Wind History from ORS (wind in knots)
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1 day agoS9S8S10S8S8S7S5N4N4NW4CalmCalmCalmS3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoS9S8SE6S8S9S7S7S9S8S7S8S6S7S6S5S8S6S6S6S7S4S6S8S7

Tide / Current Tables for Echo Bay, Sucia Islands, Strait of Georgia, Washington
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Parker Reef Light, 1 mile North of, Washington Current
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Parker Reef Light
Click for MapFlood direction 65 true
Ebb direction 265 true

Fri -- 12:07 AM PDT     Moonrise
Fri -- 01:00 AM PDT     -0.65 knots Max Ebb
Fri -- 05:20 AM PDT     Sunrise
Fri -- 06:07 AM PDT     0.00 knots Slack
Fri -- 07:43 AM PDT     -0.00 knots Slack
Fri -- 08:30 AM PDT     0.14 knots Max Flood
Fri -- 11:10 AM PDT     Moonset
Fri -- 12:03 PM PDT     -0.73 knots Max Ebb
Fri -- 04:34 PM PDT     0.00 knots Slack
Fri -- 09:02 PM PDT     1.67 knots Max Flood
Fri -- 09:13 PM PDT     Sunset
Fri -- 11:00 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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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 (11,2,3,4)
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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.