Monday, January20, 2020
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Marine Weather and Tides
Point Roberts, 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 7:55AMSunset 4:51PM Monday January 20, 2020 3:44 PM PST (23:44 UTC) Moonrise 4:13AMMoonset 1:19PM Illumination 18% Phase: Waning Crescent; Moon at 25 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- 249 Pm Pst Mon Jan 20 2020
.small craft advisory in effect from 10 pm pst this evening through late Tuesday night...
Tonight..SE wind 10 to 20 kt rising to 20 to 30 kt after midnight. Wind waves 1 to 3 ft building to 3 to 5 ft after midnight. A chance of rain in the evening then rain likely after midnight.
Tue..SE wind 20 to 30 kt. Wind waves 3 to 5 ft. Showers.
Tue night..SE wind 20 to 30 kt becoming S 15 to 25 kt after midnight. Wind waves 3 to 5 ft subsiding to 2 to 4 ft after midnight. Rain in the evening then rain likely after midnight.
Wed..S wind 15 to 25 kt becoming se 5 to 15 kt in the afternoon. Wind waves 2 to 4 ft subsiding to 2 ft or less in the afternoon.
Wed night..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..SE wind 10 to 20 kt. Wind waves 1 to 3 ft.
Thu night..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Fri..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Sat..SE wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 249 Pm Pst Mon Jan 20 2020
Synopsis for the northern and central washington coastal and inland waters..The next frontal system will move through the area tonight and Tuesday. The weather will stay active Wednesday and Thursday with additional weather systems affecting the area.


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 202224 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 224 PM PST Mon Jan 20 2020

SYNOPSIS. A weak front will dissipate over the western portion of the area tonight. Additional systems will move through the region Tuesday through the rest of the week with lowland rain and fluctuating snow levels in the mountains.

SHORT TERM /TONIGHT THROUGH THURSDAY/. A weak cold front is over western WA today with scattered showers across the region. Showers will mostly affect the coast overnight as this system continues to dissipate.

A stronger frontal system will push inland on Tuesday for more rain, a chance of thunderstorms along the coast, and heavy snow in the mountains. Snow levels are around 3,000 feet with highest snow amounts in the North Cascades at Mount Baker - a Winter Storm Warning is in effect. East winds will keep pass temperatures below freezing through the day with snow affecting both Stevens and Snoqualmie Pass. Snoqualmie Pass will likely see a change over to rain (or a rain/snow mix) Tuesday night as winds become more westerly. Down in the lowlands, expect rain and breezy winds through the period with temperatures close to normal.

Wednesday and Thursday brings warmer conditions with snow levels rising (to 5000-6000 feet). Several wet Pac Systems will clip the area for period of heavy rain, especially over the coast and mountains. Rainfall totals in the mountains will be 3-4" with higher amounts possible in the Olympics. This will force sharp rises on the rivers with minor flooding possible. Expect mild temps in the lowlands with highs reaching the lower 50s. 33

LONG TERM /FRIDAY THROUGH MONDAY/. Periods of heavy rain will continue into Friday, and possibly Saturday, as more wet Pac systems roll through the region. Rivers will continue to run high with flooding still a threat. A break in the pattern Saturday night and Sunday will bring a brief respite. A cooler upper trough will bring more rain and mountain snow early next week. 33

AVIATION. A frontal boundary will continue to weaken across the area through the evening. Rain showers continue to develop in the vicinity of the frontal boundary, with best chances for rain in the HQM and BLI areas. Showers will remain in the vicinity of the TAF sites near Puget Sound, and will have to monitor for potential amendments to include brief rain showers. Ceilings are mostly VFR, with the exception of HQM at MVFR, and should see these trends continue overnight barring any brief rain shower. The next organized front will approach the area on Tuesday, bringing widespread rain inland early in the morning hours, along with ceiling reductions to MVFR. Rain will become more scattered through the day, with thunder possible near HQM. Winds light and variable this afternoon, becoming more S/SE overnight (5-10kts) and breezy by Tuesday morning. Sustained winds on Tuesday 10-15kts with gusts 20-25kts.

KSEA . VFR ceilings through much of the overnight, with scattered showers in the vicinity. Next round of widespread rain expected by early Tuesday morning, likely lowering cigs to MVFR. Rain will become scattered by the afternoon. Winds S/SE 5-10kts overnight, increasing to 10-15kts Tuesday morning with a few gusts near 20kts.

Kovacik

MARINE. The latest surface analysis from WPC depicts a weakening frontal boundary across western Washington this afternoon. MRMS radar imagery compliments this analysis well with scattered rain showers across the interior waters, and more widespread stratiform rain across the southern coastal waters. This activity should continue through the evening hours, with possible visibility reductions in some of the showers.

A look upstream reveals a more robust weather system just west of the outer coastal waters. The frontal boundary associated with this weather system will make eastward progress overnight tonight and through the day on Tuesday. Gradients appear rather strong in the vicinity of the frontal system, with a healthy increase in wind speed expected overnight and Tuesday. The first area to experience stronger winds will be the coastal waters where winds should pick up to Gale around midnight. Soon after, winds will pick up across the interior waters, mostly to SCA. The exception could be the eastern Strait along with far eastern portions of the central Strait, where the 1 & 4km WRF guidance, along with the hi-red ARW suggest gale force winds. Have issued a Gale Warning for these waters through Tuesday afternoon. Winds will likely remain SCA for most waters thru wednesday morning before briefly relaxing ahead of the next weather system.

In addition to the winds, swells will increase through the day on Tuesday to roughly between 14-17 feet. This will continue rough bar conditions near Grays Harbor, which has lead to the extension of the SCA already in place. Seas should subside on Wednesday. Active marine weather is likely to continue off and on through the much of the week as several weather system moves across the area.

Kovacik

HYDROLOGY. A period of warming, rising snow levels, and heavy rain in the mountains will force sharp rises on the rivers flowing off the Olympics and Cascades in western Washington. Snow levels will rise to around 5,000 to 6,000 feet with 3 to 6 inches of rain in the mountains Wednesday through early Friday. Minor flooding is possible on several rivers as a result. Rivers may be flowing high through the weekend before receding.

SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Weather Advisory from 4 AM Tuesday to 4 AM PST Wednesday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties.

Winter Storm Warning from 4 AM Tuesday to 4 AM PST Wednesday for Cascades of Whatcom and Skagit Counties.

PZ . Small Craft Advisory until 10 PM PST this evening for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Gale Warning from 10 PM this evening to 4 PM PST Tuesday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Small Craft Advisory until 10 AM PST Wednesday for Grays Harbor Bar.

Gale Warning from 10 PM this evening to 7 PM PST Tuesday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 10 PM this evening to 1 AM PST Wednesday for Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory from 10 PM this evening to 4 PM PST Tuesday for West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 1 AM Tuesday to 4 AM PST Wednesday for Admiralty Inlet-Puget Sound and Hood Canal.



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 mi63 min 1011.4 hPa
CPMW1 19 mi63 min ENE 8.9 G 13
CPNW1 19 mi93 min 46°F
FRDW1 - 9449880 - Friday Harbor, WA 30 mi69 min ENE 7 G 9.9 49°F 47°F1010.4 hPa
46118 32 mi50 min 43°F 1010.3 hPa43°F
46146 - Halibut Bank 42 mi105 min E 14 G 16 46°F 45°F1 ft1010.8 hPa (-1.8)
46088 - New Dungeness, WA (Hein Bank) 45 mi35 min E 9.7 G 12 47°F 46°F1010.5 hPa44°F
SISW1 - Smith Island, WA 47 mi35 min E 6 G 11 48°F 1010.4 hPa40°F
PBFW1 - Padilla Bay Reserve, WA 48 mi75 min E 6 49°F 1011 hPa45°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 mi50 minNE 610.00 miOvercast46°F42°F87%1010.5 hPa

Link to 5 minute data for KORS

Wind History from ORS (wind in knots)
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Last 24hrCalmCalm3NE7CalmCalmCalmCalmN5
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Tide / Current Tables for Samuel Island (North Shore), British Columbia
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Samuel Island (North Shore)
Click for Map
Mon -- 04:13 AM PST     Moonrise
Mon -- 04:25 AM PST     11.59 feet High Tide
Mon -- 07:16 AM PST     11.11 feet Low Tide
Mon -- 07:56 AM PST     Sunrise
Mon -- 12:48 PM PST     12.77 feet High Tide
Mon -- 01:20 PM PST     Moonset
Mon -- 04:50 PM PST     Sunset
Mon -- 08:54 PM PST     2.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.59.110.411.211.611.511.311.111.211.511.912.312.612.812.411.49.97.95.94.132.63.14.2

Tide / Current Tables for Boat Passage, British Columbia Current
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Boat Passage
Click for Map
Mon -- 01:21 AM PST     -0.01 knots Slack
Mon -- 03:59 AM PST     -2.32 knots Max Ebb
Mon -- 04:13 AM PST     Moonrise
Mon -- 06:50 AM PST     0.00 knots Slack
Mon -- 07:56 AM PST     Sunrise
Mon -- 09:18 AM PST     1.75 knots Max Flood
Mon -- 11:42 AM PST     -0.00 knots Slack
Mon -- 01:20 PM PST     Moonset
Mon -- 03:39 PM PST     -4.21 knots Max Ebb
Mon -- 04:50 PM PST     Sunset
Mon -- 06:54 PM PST     0.01 knots Slack
Mon -- 10:29 PM PST     4.80 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.10.6-0.9-1.9-2.3-2-10.21.21.71.60.8-0.4-1.8-3.1-4-4.2-3.4-1.80.22.23.84.74.7

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 (18,4,5,8)
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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 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.