Friday, April3, 2020
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Marine Weather and Tides
Geneva, 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 6:39AMSunset 7:46PM Friday April 3, 2020 3:45 AM PDT (10:45 UTC) Moonrise 1:01PMMoonset 3:55AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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- 259 Am Pdt Fri Apr 3 2020
.small craft advisory in effect until 5 am pdt early this morning...
Today..W wind 5 to 15 kt becoming 10 to 20 kt in the afternoon. Wind waves 2 ft or less. A chance of showers.
Tonight..NW wind 5 to 15 kt becoming se after midnight. Wind waves 2 ft or less. A slight chance of showers.
Sat..E wind 10 to 20 kt becoming N 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Sat night..N wind 5 to 15 kt. Wind waves 2 ft or less.
Sun..E wind 5 to 15 kt becoming nw in the afternoon. Wind waves 1 ft or less.
Sun night..NW wind 5 to 15 kt. Wind waves 1 ft or less.
Mon..N wind to 10 kt becoming w. Wind waves 1 ft or less.
Tue..Light wind. Wind waves 1 ft or less.
PZZ100 259 Am Pdt Fri Apr 3 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will increase tonight with strongest winds through the strait of juan de fuca. Winds ease Friday night, then eventually turn north to northeast by Saturday as high pressure builds into british columbia and lower pressure moves into oregon. The flow will turn onshore again early next week.


7 Day Forecast for Marine Location Near Geneva, WA
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location: 48.76, -122.41     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 030958 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 258 AM PDT Fri Apr 3 2020

SYNOPSIS. Lowland rain and mountain snow showers will continue today as another low pressure system affects the region. Drier conditions are expected on Saturday before a chance of showers returns for Sunday as a trough of low pressure moves onshore south of the area. A building ridge of high pressure is expected to lead to dry and warmer conditions from Monday into the middle part of the coming week.

SHORT TERM /TODAY THROUGH SUNDAY/. Remnants of an earlier convergence have drifted northward into the Admiralty Inlet area and portions Snohomish/Skagit counties overnight. Shower activity will increase again later this morning . especially across the North Interior and Cascades . as an upper trough dipping southward across the western Canadian provinces clips the area. QPF continues to look on the light side. The best opportunity for precip across the Puget Sound area will likely be this afternoon and early evening in the form of a convergence zone. Any PSCZ is likely to be short-lived as low level gradients quickly turn northerly tonight as a deepening surface low moves in the Oregon coastal waters.

Weak shortwave ridging will keep most of Western Washington dry on Saturday as an upper trough digs southward well offshore. Eventually, some moisture associated with that system will wrap around into the far southern part of the forecast area late Saturday night and Sunday, but it's not enough to warrant more than a chance of showers at this time. Weak, nondescript upper troughing remains over the region on Sunday. That's enough to warrant low chance PoPs, but most places will probably be dry most of the day. With the influence of a persistent upper trough over Western Washington, temperatures through the short term forecast period will remain below normal.

LONG TERM /MONDAY THROUGH THURSDAY/. As the previously mentioned offshore upper trough continues its southward journey into California, an offshore upper ridge upstream will begin to build into the region. It's not a particularly high amplitude ridge, but 500mb heights will build from the low 550s dam to near 570 by Wednesday. 850mb temps rise from near 1C Monday afternoon to around 9C by Wednesday afternoon. This spells a decent warmup with several spots cracking 60 degrees Tues/Wed. Deterministic model runs fall out of agreement toward the end of the extended forecast period with the Euro keeping ridging around longer than the GFS. A look at the ensemble means for the 7 to 10 day period from the Euro, GFS, and Canadian all show positive height anomalies over the northeast Pacific with strongly negative anomalies over central and southern California. This suggests that we might be turning the corner toward a milder, more spring-like pattern next week. 27

AVIATION. Showers will remain in the area tonight as the trough lingers over the region. Weak convergence zone activity is persisting through the night across Snohomish county with scattered showers approaching the western shores. Conditions will be generally VFR across all terminals, breaking to MVFR near daybreak as shower activity picks up in the morning hours. Flow will be southwesterly between 10-15 knots, before taking a more onshore direction near daybreak. Patchy low clouds and MVFR cigs are possible Friday morning with onshore flow.

KSEA . Generally VFR conditions are expected at the terminal overnight. Showers in the vicinity tonight with S/SW winds to 10 kt. Possible MVFR ceilings early Friday morning as shower activity increases with more onshore flow.

Kristell

MARINE. Onshore flow will prevail across western WA tonight with scattered showers making their way onshore through the night and into Friday morning. Strongest wind/waves will be through the Strait of Juan de Fuca and Northern Inland Waters - a Small Craft Advisory is in effect. Winds will remain onshore through Friday then ease Friday night. Low pressure will shift toward OR/CA over the weekend with generally light N/NE flow over western WA. The flow will turn onshore again by Monday as low pressure shifts inland.

Kristell

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

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory until 8 PM PDT this evening for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 5 AM PDT early this morning for Northern Inland Waters Including The San Juan Islands.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHYW1 - 9449424 - Cherry Point, WA 20 mi45 min 1019.4 hPa (-0.9)
CPMW1 20 mi45 min SW 17 G 19 42°F
CPNW1 20 mi93 min SSW 12 G 14 42°F
PBFW1 - Padilla Bay Reserve, WA 21 mi75 min W 6 42°F 1020 hPa35°F
FRDW1 - 9449880 - Friday Harbor, WA 35 mi69 min WSW 9.9 G 14 41°F 47°F1019.7 hPa
SISW1 - Smith Island, WA 38 mi15 min S 16 G 18 41°F 1020.2 hPa35°F
PTWW1 - 9444900 - Port Townsend, WA 49 mi45 min SE 8.9 G 11 40°F 47°F1021.3 hPa (-0.9)

Wind History for Cherry Point South Dock, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bellingham, Bellingham International Airport, WA7 mi52 minVar 510.00 miOvercast42°F30°F65%1020 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA20 mi50 minS 610.00 miOvercast41°F35°F81%1020.3 hPa

Link to 5 minute data for KBLI

Wind History from BLI (wind in knots)
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Last 24hrN3CalmCalmE3N3NE3SE4SE3CalmNE6N6--E3----S5S6SE6S3CalmCalmCalmS65
1 day agoNE4N4N5NE11NE13
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NE7NE7N7--NE5N7NE6NE5
2 days agoSE5CalmSE7SE3SE4SE6S6S11S9
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S9S9S9S9S7S8S7S10S8S8S6S7S4S6NE6

Tide / Current Tables for Bellingham, Washington
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Bellingham
Click for Map
Fri -- 03:16 AM PDT     8.31 feet High Tide
Fri -- 04:55 AM PDT     Moonset
Fri -- 06:42 AM PDT     Sunrise
Fri -- 09:10 AM PDT     6.04 feet Low Tide
Fri -- 12:10 PM PDT     6.56 feet High Tide
Fri -- 02:01 PM PDT     Moonrise
Fri -- 07:44 PM PDT     Sunset
Fri -- 08:03 PM PDT     0.44 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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67.288.38.27.97.36.76.366.16.46.66.45.953.92.61.50.80.40.71.63.1

Tide / Current Tables for Hale Passage, 0.5 miles SE of Lummi Pt, Washington Current
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Hale Passage
Click for Map
Fri -- 03:41 AM PDT     -0.00 knots Slack
Fri -- 04:52 AM PDT     Moonset
Fri -- 06:18 AM PDT     -0.45 knots Max Ebb
Fri -- 06:43 AM PDT     Sunrise
Fri -- 11:05 AM PDT     -0.06 knots Min Ebb
Fri -- 02:05 PM PDT     Moonrise
Fri -- 05:33 PM PDT     -0.93 knots Max Ebb
Fri -- 07:44 PM PDT     Sunset
Fri -- 08:57 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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1.210.80.3-0.1-0.3-0.4-0.4-0.4-0.3-0.2-0.1-0.1-0.3-0.4-0.6-0.8-0.9-0.9-0.7-0.400.61.2

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 (6,6,7,8)
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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.