Monday, December9, 2019
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Marine Weather and Tides
Point Roberts, WA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:52AMSunset 4:16PM Monday December 9, 2019 5:00 AM PST (13:00 UTC) Moonrise 3:09PMMoonset 4:54AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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- 243 Am Pst Mon Dec 9 2019
Today..SE wind to 10 kt. Wind waves 1 ft or less.
Tonight..NE wind to 10 kt becoming se after midnight. Wind waves 1 ft or less.
Tue..SE wind 10 to 20 kt. Wind waves 1 to 3 ft. A slight chance of showers in the morning then a chance of showers in the afternoon.
Tue night..SE wind 5 to 15 kt becoming S to 10 kt after midnight. Wind waves 2 ft or less.
Wed..SE wind 10 to 20 kt rising to 15 to 25 kt in the afternoon. Wind waves 2 to 4 ft.
Wed night..SE wind 20 to 30 kt. Wind waves 3 to 5 ft.
Thu..S wind 15 to 25 kt easing to 5 to 15 kt. Wind waves 2 to 4 ft subsiding to 2 ft or less.
Fri..S wind to 10 kt becoming sw. Wind waves 1 ft or less.
PZZ100 243 Am Pst Mon Dec 9 2019
Synopsis for the northern and central washington coastal and inland waters..Weak high pressure will be over the area today. A weakening front will move through the area on Tuesday. A stronger frontal system will cross the area Wednesday and Thursday.


7 Day Forecast for Marine Location Near Point Roberts, WA
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location: 48.98, -123.08     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 091125 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 325 AM PST Mon Dec 9 2019

SYNOPSIS. Western Washington will remain dry into Tuesday as an upper level ridge builds across the Pacific Northwest. The next system will move through on Tuesday afternoon and evening, with an wet and unsettled pattern expected for the second half of the week.

SHORT TERM /TODAY THROUGH WEDNESDAY/. Low clouds and areas of patchy fog have once again set up over portions of W WA this morning. These should hang around into mid to late morning before starting to lift and yielding partly to mostly sunny conditions over the area during the afternoon. This break in the clouds will be brief though as more clouds will be on their way into the area this evening in advance of the next weather system.

Models remain in agreement putting this weak front on the coast mid- morning Tuesday and falling apart as it crosses W WA this afternoon. A weak shortwave ridge follows quickly behind it allowing Tuesday to get off to a dry start . but models still disagree on how long this ridge lingers . with the GFS keeping it in place into Wed afternoon while the ECMWF still gives it the boot pretty quickly bringing the next system in by late Wed morning. GEFS plumes suggest even a later start . more toward Wed evening. As each model remains consistent with itself . continue to opt for a middle ground solution until some sort of consensus emerges.

Temps continue to look fairly stable throughout the short term with afternoon highs in the lowlands in the upper 40s to around 50 while overnight lows will range from the upper 30s to lower 40s.

LONG TERM /THURSDAY THROUGH SUNDAY/. Models also still in agreement regarding active pattern expected to start at some point on Wed and continuing for the remainder of the forecast period thanks to a broad upper level trough pattern. This will keep conditions wet for much of Thursday and Friday. Both GFS and ECMWF show a ridge developing over the Pac NW Saturday and into Sunday . which may bring the prospect for a dry weekend. Temperatures in the extended timeframe will mostly be in the mid 40s to low 50s, with overnight lows in the upper 30s to lower 40s. SMR

AVIATION. Upper level ridge centered offshore moving inland tonight. Light flow in the lower levels continuing through Tuesday morning. Air mass moist and stable with drying trend this afternoon.

Widespread ceilings below 1000 feet and visibility 1-3sm in fog. isolated visibility 1/2sm or less. Tops 1000-1500 feet. Mid level deck dissipating with ridge moving overhead this morning which will allow the sun to work on the shallow fog layer. Clouds scattering out midday with no visibility restrictions after 21z. Increasing high level clouds tonight but not in time to prevent areas of fog from reforming around midnight tonight.

KSEA . Ceilings below 500 feet with visibility 1-3sm in fog through 17z. Improving trend 17z-21z with clouds scattering out early afternoon. Fog reforming after midnight with visibility dropping to 1-3sm. Light north northeast wind through tonight. Felton

MARINE. Weak high pressure will be over the area today. A weakening front will move through the area on Tuesday. Small craft advisory strength east to southeast winds are expected with this system over the Coastal Waters and West Entrance Strait of Juan de Fuca.

A stronger frontal system will cross the area Wednesday and Thursday. Gales are possible for the Coastal Waters with this system Wednesday night. In addition, west swell will build to around 15 feet Wednesday night and Thursday.

HYDROLOGY.

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory from 6 PM this evening to 2 PM PST 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 midnight tonight to 2 PM PST Tuesday for Coastal Waters From Cape Flattery To James Island Out 10 Nm-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 from 2 AM to 2 PM PST Tuesday for West 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 19 mi60 min 1025.4 hPa (-0.0)
CPMW1 19 mi66 min ENE 12 G 16 41°F
CPNW1 19 mi108 min ENE 12 G 14 42°F
FRDW1 - 9449880 - Friday Harbor, WA 30 mi84 min 48°F1024.9 hPa
46118 32 mi65 min 38°F 1024.6 hPa38°F
46146 - Halibut Bank 42 mi120 min E 5.8 G 5.8 44°F 47°F1025.2 hPa (-0.1)
46088 - New Dungeness, WA (Hein Bank) 45 mi40 min ENE 5.8 G 5.8 46°F 47°F1025.5 hPa41°F
SISW1 - Smith Island, WA 47 mi30 min NE 6 G 7 42°F 1025 hPa40°F
PBFW1 - Padilla Bay Reserve, WA 48 mi90 min Calm 39°F 1025 hPa39°F

Wind History for Cherry Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eastsound, Orcas Island Airport, WA21 mi65 minVar 310.00 miOvercast43°F37°F81%1024.7 hPa

Link to 5 minute data for KORS

Wind History from ORS (wind in knots)
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Last 24hrN3NW7N8NW7NW6CalmCalmNW5NW7N5CalmCalmNW3CalmNW6CalmCalmCalmCalmCalmNE44
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2 days agoCalmCalmCalmCalmCalmCalmCalmNE5Calm4CalmCalm3CalmNE3CalmCalmCalmN4CalmCalmCalmCalmCalm

Tide / Current Tables for Samuel Island (North Shore), British Columbia
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Samuel Island (North Shore)
Click for Map
Mon -- 04:54 AM PST     Moonset
Mon -- 05:11 AM PST     11.18 feet High Tide
Mon -- 07:53 AM PST     Sunrise
Mon -- 09:20 AM PST     9.61 feet Low Tide
Mon -- 02:42 PM PST     11.63 feet High Tide
Mon -- 03:09 PM PST     Moonrise
Mon -- 04:16 PM PST     Sunset
Mon -- 10:03 PM PST     3.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.778.69.910.811.21110.5109.69.710.110.611.111.511.611.1108.56.74.93.63.13.4

Tide / Current Tables for Boat Passage, British Columbia Current
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Boat Passage
Click for Map
Mon -- 02:45 AM PST     -0.01 knots Slack
Mon -- 04:54 AM PST     Moonset
Mon -- 05:29 AM PST     -2.56 knots Max Ebb
Mon -- 07:53 AM PST     Sunrise
Mon -- 08:19 AM PST     0.01 knots Slack
Mon -- 10:53 AM PST     2.18 knots Max Flood
Mon -- 01:27 PM PST     -0.01 knots Slack
Mon -- 03:09 PM PST     Moonrise
Mon -- 04:16 PM PST     Sunset
Mon -- 05:10 PM PST     -4.09 knots Max Ebb
Mon -- 08:19 PM PST     0.00 knots Slack
Mon -- 11:42 PM PST     4.60 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.72.61.2-0.4-1.7-2.5-2.5-1.7-0.40.91.92.21.70.6-0.8-2.3-3.5-4.1-3.8-2.6-0.71.43.24.4

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (8,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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 numerious 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.