Saturday, December16, 2017 L-36.com


Marine Weather and Tides
Point Roberts, WA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:59AMSunset 4:17PM Saturday December 16, 2017 8:36 AM PST (16:36 UTC) Moonrise 6:14AMMoonset 3:45PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 256 Am Pst Sat Dec 16 2017
.small craft advisory in effect from this evening through Sunday afternoon...
Today..S wind 5 to 15 kt. Wind waves 2 ft or less. A slight chance of rain in the morning then a chance of rain in the afternoon.
Tonight..SE wind 15 to 25 kt rising to 20 to 30 kt after midnight. Wind waves 2 to 5 ft. Rain likely in the evening then rain after midnight.
Sun..SE wind 20 to 30 kt becoming S 15 to 25 kt in the afternoon. Wind waves 2 to 5 ft. Rain.
Sun night..SW wind 5 to 15 kt becoming nw after midnight. Wind waves 2 ft or less.
Mon..NW wind 5 to 15 kt in the morning becoming light. Wind waves 2 ft or less.
Mon night..E wind to 10 kt becoming se 15 to 25 kt after midnight. Wind waves 1 ft or less building to 2 to 4 ft after midnight.
Tue..SE wind 15 to 25 kt becoming sw. Wind waves 2 to 4 ft.
Wed..NW wind to 10 kt becoming light. Wind waves 1 ft or less.
PZZ100 256 Am Pst Sat Dec 16 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will ease this morning. A warm front will move through the waters tonight and Sunday. A deepening low will track inland near or to the north of western washington Tuesday. Offshore flow will develop Wednesday.

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 161203
afdsew
area forecast discussion
national weather service seattle wa
403 am pst Sat dec 16 2017

Synopsis A weak warm front will spread inland on Saturday
night, with light rain preceding the front today and this evening.

Rain will increase on Sunday as a cold front sags southward into
western washington. A strengthening low center will pass across
southern vancouver island on Tuesday, and a strong trailing cold
front will bring wind and heavy mountain snow. Lingering showers
will continue Wednesday, then an upper ridge will bring dry
weather on Thursday and Friday.

Short term A warm front will spread across western washington
tonight. Preceding the front today and this evening, light rain
and light mountain snow will gradually expand as isentropic lift
increases. Some locations will see overnight temperatures increase
a little tonight due to the warm front.

On Sunday, an east-west oriented cold front will slowly sag
southward into western washington and then turn up stationary over
the area on Sunday night and Monday. This will help to focus more
rain across the area on Sunday and Monday, with strong west flow
aloft further enhancing lift and precip over the cascades.

Snowfall forecasts on Sunday pm are such that a winter weather
advisory will eventually be needed over the cascades. Haner

Long term Models agree in cyclogenesis on Monday between 130w
and 140w as a vigorous upper trough preceded by lots of divergence
aloft interacts with a leftover surface front. All models show the
low center moving across southern or central vancouver island on
Tuesday. The low center will still be in the process of deepening
as it moves by to the north. Meanwhile, a strong trailing cold
front will sweep across western washington on Tuesday. The
abundance of large-scale lift will lead to a period of heavy
precip in advance of the cold front. Heavy snow should occur over
the mountains. Still watching wind potential on Tuesday, partly
because winds tend to pick up more with the passage of low centers
that are still in the process of strengthening.

A compact upper low with very cold air aloft will spread across
the forecast area early Wednesday, leading to plenty of post-
frontal convective showers.

An upper ridge axis will strengthen and amplify near 135w on
Wednesday, then move east to near 130w on Thursday. This will dry
out the weather quite readily on Wednesday night. With the upper
ridge axis continuing near 130w on Thursday and Friday, cool and
dry weather is expected at that time. Haner

Aviation Northerly flow aloft today will become westerly
tonight as a warm front reaches the area. The air mass is
stable. There will be a mix of clouds today. Moisture will
increase at all levels tonight as a warm front arrives.

Ksea... It looks like a mix of clouds today - hard to get much
more specific than that. The afternoon looks like the most likely
period of higher ceilings. Low clouds should become prevalent
tonight as a warm front arrives. Southerly wind 4-8 knots.

Schneider

Marine Onshore flow will ease this morning. A warm front will
move into the area tonight and Sunday for a round of small craft
advisory southerly winds most waters.

Monday will be a lull in between weather systems. A vigorous
frontal system will move through the area Monday night and
Tuesday with gale force winds possible for the coastal waters.

Offshore flow will develop Wednesday. Schneider

Hydrology River flooding is not expected the next 7 days.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 4 pm this afternoon to 4 am pst Sunday
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 4 pm this afternoon to 7 am pst Sunday
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 until 6 am pst early this morning for
central u.S. Waters strait of juan de fuca-east entrance
u.S. Waters strait of juan de fuca.

Small craft advisory from 6 pm this evening to 10 am pst Sunday
for admiralty inlet-east entrance u.S. Waters strait of
juan de fuca.

Small craft advisory from 6 pm this evening to 4 pm pst Sunday
for northern inland waters including the san juan islands.

Small craft advisory from midnight tonight to 6 pm pst Sunday
for puget sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHYW1 - 9449424 - Cherry Point, WA 19 mi49 min SE 5.1 G 7 43°F
CPMW1 19 mi151 min E 1 G 1.9 42°F 47°F
FRDW1 - 9449880 - Friday Harbor, WA 30 mi145 min 48°F1025.4 hPa
46146 - Halibut Bank 42 mi97 min ESE 5.8 G 7.8 44°F 46°F1 ft1025.1 hPa (+0.5)
46088 - New Dungeness, WA (Hein Bank) 45 mi47 min NNW 1.9 G 5.8 47°F 47°F1 ft1025.5 hPa (+0.9)37°F
SISW1 - Smith Island, WA 47 mi37 min SSW 7 G 9.9 44°F 1025.5 hPa (+0.4)
PBFW1 - Padilla Bay Reserve, WA 48 mi67 min SSE 1.9 35°F 1026 hPa

Wind History for Cherry Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eastsound, Orcas Island Airport, WA21 mi42 minS 310.00 miMostly Cloudy37°F37°F100%1025.7 hPa

Wind History from ORS (wind in knots)
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Last 24hrCalmCalmS4S4S5S5S7S6S4S5S5S4S4S5W54CalmS3S4S4S4CalmSE3S3
1 day agoCalmN7N5N3CalmNW5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS9CalmCalmCalmS4S4S6S5
2 days agoCalmNW8N5N7N6N7N6NW5NW6Calm46N3N6NW7CalmCalmCalmCalmCalmCalm355

Tide / Current Tables for Samuel Island (North Shore), British Columbia
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Samuel Island (North Shore)
Click for Map
Sat -- 06:11 AM PST     12.56 feet High Tide
Sat -- 06:14 AM PST     Moonrise
Sat -- 08:00 AM PST     Sunrise
Sat -- 11:00 AM PST     10.32 feet Low Tide
Sat -- 03:27 PM PST     11.51 feet High Tide
Sat -- 03:45 PM PST     Moonset
Sat -- 04:16 PM PST     Sunset
Sat -- 10:49 PM PST     2.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
45.47.39.31112.112.512.411.71110.510.310.410.711.111.511.410.89.57.85.94.12.92.6

Tide / Current Tables for Boat Passage, British Columbia Current
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Boat Passage
Click for Map
Sat -- 03:42 AM PST     -0.00 knots Slack
Sat -- 06:13 AM PST     Moonrise
Sat -- 06:27 AM PST     -3.06 knots Max Ebb
Sat -- 08:00 AM PST     Sunrise
Sat -- 09:30 AM PST     0.01 knots Slack
Sat -- 11:52 AM PST     1.91 knots Max Flood
Sat -- 02:15 PM PST     -0.00 knots Slack
Sat -- 03:45 PM PST     Moonset
Sat -- 04:16 PM PST     Sunset
Sat -- 05:57 PM PST     -4.17 knots Max Ebb
Sat -- 09:02 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.84.33.11.3-0.5-2.1-3-2.9-2.1-0.70.61.61.91.40.4-1.1-2.6-3.8-4.2-3.6-2.2-0.12.13.9

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Seattle, WA (11,2,3,4)
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Ground Weather Radar Station Seattle/Tacoma, WA
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weather_mapweather_map weather_map

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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.