Friday, December13, 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 7:56AMSunset 4:16PM Friday December 13, 2019 6:41 PM PST (02:41 UTC) Moonrise 5:51PMMoonset 9:26AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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 Pm Pst Fri Dec 13 2019
Tonight..SW wind to 10 kt becoming ne after midnight. Wind waves 1 ft or less. A chance of rain.
Sat..E wind 5 to 15 kt becoming se to 10 kt in the afternoon. Wind waves 2 ft or less. A chance of rain in the morning then a slight chance of rain in the afternoon.
Sat night..SE wind to 10 kt. Wind waves 1 ft or less.
Sun..E wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Sun night..Light wind becoming E to 10 kt after midnight. Wind waves 1 ft or less.
Mon..E wind to 10 kt. Wind waves 1 ft or less.
Mon night..E wind to 10 kt. Wind waves 1 ft or less.
Tue..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Wed..SE wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 243 Pm Pst Fri Dec 13 2019
Synopsis for the northern and central washington coastal and inland waters..A weak surface ridge will build over the coastal waters today and persist into the weekend for a transition to quieter conditions across area waters. Low level offshore flow is expected to develop early next week as surface ridging builds east of the cascades.


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 132228 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 228 PM PST Fri Dec 13 2019

SYNOPSIS. Snow showers will gradually taper off in the Cascades through this evening. Scattered showers and perhaps an isolated thunderstorm in the lowlands will continue into this evening before tapering off. A shortwave ridge will bring calmer weather to the region this weekend with a more active weather pattern potentially making a return mid to late next week.

SHORT TERM /TONIGHT THROUGH MONDAY/. Scattered rain and snow showers will gradually taper off across Western Washington through Saturday morning as a shortwave ridge builds off shore and pushes across the region. A northwesterly flow regime will set up in its wake, yielding generally quiet weather across the region through the remainder of the weekend. The upper level pattern will gradually amplify through the end of the period as a ridge builds off of the northwest coast. A cold airmass will remain in place, with model ensembles showing low to mid 30 low temperatures in the low lands on Sunday and Monday mornings. Highs are generally progged to run around normal for mid December.

LONG TERM /TUESDAY THROUGH FRIDAY/.

Ensemble guidance is consistent in the aforementioned upper level shortwave ridge pushing across the Pacific Northwest as the first of a potential series of shortwave troughs ejects out of the Gulf of Alaska. This will bring a return of wet and active weather to western Washington by midweek. GEFS, EPS, and GEPS members show a healthy fetch of moisture ahead of second wave later next week into next weekend which would bring another round of rain and mountain snow to the region. Stay tuned to the latest forecast through the weekend into next week as details with these potential systems become clearer.

Pullin

AVIATION. Westerly flow aloft will become northwesterly tonight as weak upper ridging shifts in the coastal waters. A weakly unstable air mass this afternoon will stabilize overnight, but remain moist with light surface gradients. This will lead to the development of widespread MVFR ceilings and possible pockets of IFR overnight. These conditions will persist into Saturday morning with modest improvements expected Saturday afternoon.

KSEA . With a moist and increasingly stable air mass in place, VFR ceilings will deteriorate to MVFR this evening. Low MVFR is expected by around 06Z with the possibility of IFR ceilings for a period Saturday morning. There may be some marginal improvement in ceilings by Saturday afternoon, but available guidance does not lend a lot confidence in this occurring. Surface winds light southerly becoming W-SW less than 7 knots Saturday afternoon.

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MARINE. Small craft advisories for hazardous seas continue into Saturday for the coastal waters and west entrance to the strait. Seas will gradually diminish over the weekend. Otherwise, no wind related concerns are anticipated over area waters. Winds will become increasingly offshore early next week as surface high pressure gets more established east of the Cascades.

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HYDROLOGY.

There are no flooding concerns at this time as shower activity will remain scattered and light. Generally quiet conditions will prevail through the weekend and into early next week before the next storm systems affect the region by mid next week.

Pullin

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory until 4 PM PST Saturday 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-Grays Harbor Bar-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 mi59 min 1016.8 hPa
CPMW1 19 mi59 min S 8.9 G 11 46°F
CPNW1 19 mi89 min S 9.9 G 11 46°F
FRDW1 - 9449880 - Friday Harbor, WA 30 mi65 min 48°F1016.7 hPa
46118 32 mi46 min 45°F 1015.9 hPa45°F
46146 - Halibut Bank 42 mi101 min E 7.8 G 9.7 45°F 46°F1 ft1016.3 hPa (-0.3)
46088 - New Dungeness, WA (Hein Bank) 45 mi41 min SSW 3.9 G 3.9 46°F 47°F1017.4 hPa41°F
SISW1 - Smith Island, WA 47 mi31 min SSW 1.9 G 2.9 45°F 1016.7 hPa41°F
PBFW1 - Padilla Bay Reserve, WA 48 mi71 min E 1 41°F 1017 hPa41°F

Wind History for Cherry Point South Dock, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eastsound, Orcas Island Airport, WA21 mi46 minSSE 410.00 miMostly Cloudy45°F42°F93%1016.3 hPa

Link to 5 minute data for KORS

Wind History from ORS (wind in knots)
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Last 24hrS6S11S9S9
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CalmS10S4SE9S9S10SE10S84SE5S6S8S7
2 days agoCalm34E3CalmCalm3CalmCalmNE3CalmCalm3NE54CalmNE6NE8
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Tide / Current Tables for Tsawwassen, British Columbia
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Tsawwassen
Click for Map
Fri -- 07:07 AM PST     14.61 feet High Tide
Fri -- 07:58 AM PST     Sunrise
Fri -- 09:25 AM PST     Moonset
Fri -- 12:13 PM PST     11.07 feet Low Tide
Fri -- 04:15 PM PST     Sunset
Fri -- 04:16 PM PST     12.78 feet High Tide
Fri -- 05:51 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.735.27.810.412.614.114.614.313.512.511.511.111.211.812.412.812.611.910.38.25.83.51.9

Tide / Current Tables for Boat Passage, British Columbia Current
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Boat Passage
Click for Map
Fri -- 01:36 AM PST     5.82 knots Max Flood
Fri -- 05:25 AM PST     -0.00 knots Slack
Fri -- 07:57 AM PST     Sunrise
Fri -- 08:20 AM PST     -3.52 knots Max Ebb
Fri -- 09:25 AM PST     Moonset
Fri -- 11:33 AM PST     0.01 knots Slack
Fri -- 01:40 PM PST     1.83 knots Max Flood
Fri -- 03:49 PM PST     -0.01 knots Slack
Fri -- 04:16 PM PST     Sunset
Fri -- 05:52 PM PST     Moonrise
Fri -- 07:35 PM PST     -4.43 knots Max Ebb
Fri -- 10:43 PM PST     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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4.45.65.74.830.9-1.1-2.7-3.5-3.3-2.3-0.80.61.61.81.1-0.3-1.9-3.4-4.3-4.3-3.5-1.70.7

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (21,6,7,8)
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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 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.