Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Point Roberts, WA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:04AMSunset 7:32PM Thursday March 23, 2017 7:18 PM PDT (02:18 UTC) Moonrise 3:56AMMoonset 1:38PM Illumination 13% Phase: Waning Crescent; Moon at 26 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- 300 Pm Pdt Thu Mar 23 2017
.gale warning in effect through late tonight...
.small craft advisory in effect from late tonight through Friday afternoon...
Tonight..SE wind 25 to 35 kt...becoming S late. Wind waves 4 to 6 ft. Rain at times.
Fri..S wind 15 to 25 kt. Wind waves 2 to 4 ft. A chance of rain in the morning then showers likely and a slight chance of tstms in the afternoon.
Fri night..S wind 5 to 15 kt. Wind waves 2 ft or less. A slight chance of tstms in the evening. Showers likely.
Sat..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Sat night..W wind to 10 kt becoming S after midnight. Wind waves 1 ft or less.
Sun..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Sun night..Light wind becoming se to 10 kt after midnight. Wind waves 1 ft or less.
Mon..N wind to 10 kt becoming W 10 to 20 kt. Wind waves 1 to 3 ft.
Tue..SW wind 5 to 15 kt becoming se. Wind waves 2 ft or less.
PZZ100 300 Pm Pdt Thu Mar 23 2017
Synopsis for the northern and central washington coastal and inland waters..A vigorous front over the coastal waters this evening will shift through the inland waters later tonight. Onshore shore flow will prevail behind the front Friday and Friday night. Weak surface high pressure will shift over the area Saturday afternoon and night. Another low pressure system will affect the waters Sunday into early next week.

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 232231
afdsew
area forecast discussion
national weather service seattle wa
330 pm pdt Thu mar 23 2017

Synopsis Rain will spread into the interior this evening as a
front moves onshore. An upper trough will bring showers Friday.

Showers will decrease Saturday as the trough shifts inland.

Additional fronts will reach the area Sunday and around Wednesday.

Short term Rain on the coast is quite apparent in radar, and has
been showing up in surface obs as well. Visible satellite imagery
still shows some clear bits over inland areas, but clouds will be
increasing presently. The front will move onshore this evening
bringing rain to all areas, with decreasing showers behind the front
later tonight. The mountains will get snow--southerly flow aloft
favors the volcanoes but not the passes, so have issued a winter
weather advisory mainly for the volcanoes above about 4000 feet late
tonight through Friday morning. There will also be some breezy to
windy conditions coast and north interior.

An upper trough will move over the area on Friday giving showers.

A shortwave in the flow will enhance showers in the afternoon.

Models have continued to show negative lifted indices spreading from
offshore Friday morning to inland areas Friday afternoon and
evening. Have introduced a slight chance of thunderstorms into the
forecast for Friday afternoon and evening.

The upper trough will slowly shift inland Friday night and Saturday.

There will be enough lingering instability for a continued chance of
showers but the trend should be toward drying on Saturday and
especially Saturday night. Sunday will begin dry but another system
will reach the coast in the afternoon and probably spread rain over
the whole area Sunday evening. High temperatures Friday through
Sunday will be a few degrees below normal. Burke

Long term Monday will be showery as an upper trough passes.

Tuesday now looks wetter in the models and have boosted pops,
especially on the coast and in the mountains. Wednesday still
appears to be a day when a front brings rain. Thursday will be
showery at first but could see significant drying later in the day.

Temperatures will be close to normal through the period. Burke

Aviation Strong southwest flow aloft through Friday morning as a
trough moves into the pacific northwest. Moderate west-southwest
flow aloft by Friday afternoon. Air mass generally moist and stable.

A surface front will reach the coast by around midnight and
dissipate as it slowly moves through puget sound Friday morning.

Rain developing over most of WRN wa by early this evening, becoming
showers behind a front Friday. MainlyVFR cigs, however brief
periods of MVFR cigs/vis possible with steady rain ahead of the
front later tonight.

Ksea... Southeast wind 8-13 kt, becoming south-southwest 10-16 kt
gusts to 28 kt Friday.VFR CIGS around 7-8k ft lowering rapidly to
around 4k ft as steady rain develops around 02z.

Marine Southeast gales up to 40 kt over the coastal waters this
evening, switching to south or southwesterly late tonight and
gradually easing behind a front. Gale force winds over the east
entrance to the strait and north inland waters will be more brief
tonight. Small craft winds developing this evening all other waters
including puget sound. As gales ease late tonight, small craft
strength winds will linger in most waters Friday in post frontal
onshore flow.

Higher pressure builds over the waters Friday night through
Saturday. Another low will affect the waters late Sunday into
Monday.

Hydrology River flooding is unlikely over the next 7 days.

Sew watches/warnings/advisories
Wa... Winter weather advisory from 11 pm this evening to 11 am pdt
Friday for cascades of pierce and lewis counties-cascades
of whatcom and skagit counties.

Pz... Small craft advisory from 3 am to 5 pm pdt Friday 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-east entrance u.S. Waters
strait of juan de fuca-northern inland waters including the
san juan islands.

Gale warning until 3 am pdt Friday 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-east entrance u.S. Waters strait of juan de fuca-
northern inland waters including the san juan islands.

Small craft advisory for rough bar until 11 pm pdt Friday for
grays harbor bar.

Small craft advisory until 5 pm pdt Friday for admiralty inlet-
puget sound and hood canal-west entrance u.S. Waters strait
of juan de fuca.

Small craft advisory until 6 am pdt Friday for central u.S.

Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPMW1 19 mi48 min E 1 G 1.9 51°F
CHYW1 - 9449424 - Cherry Point, WA 19 mi48 min E 1.9 G 4.1 1012.5 hPa
FRDW1 - 9449880 - Friday Harbor, WA 30 mi48 min E 8 G 11 50°F 47°F1011.6 hPa
46118 32 mi93 min NE 3.9 49°F 1012.4 hPa42°F
46146 - Halibut Bank 42 mi78 min E 12 G 18 48°F 46°F2 ft1012.2 hPa (-2.2)
46088 - New Dungeness, WA (Hein Bank) 45 mi58 min E 19 G 21 50°F 47°F3 ft1010 hPa40°F
SISW1 - Smith Island, WA 47 mi78 min ESE 16 G 17 50°F 1012 hPa (-2.0)
PBFW1 - Padilla Bay Reserve, WA 48 mi48 min SSW 4.1 50°F 1012 hPa40°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 mi23 minSE 6 G 188.00 miFair54°F32°F44%1011.2 hPa

Wind History from ORS (wind in knots)
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Last 24hrSW9
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1 day agoS8S6S9S3S6S8S7S5S5SE10
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2 days agoCalmNE3CalmNE3NE7NE6NE4NE5NE4CalmE4NE5NE6E6NE7--NE5NE4N3N6E3S6S6S6
G16

Tide / Current Tables for Samuel Island (North Shore), British Columbia
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Samuel Island (North Shore)
Click for Map
Thu -- 04:45 AM PDT     11.68 feet High Tide
Thu -- 04:55 AM PDT     Moonrise
Thu -- 07:08 AM PDT     Sunrise
Thu -- 11:41 AM PDT     9.53 feet Low Tide
Thu -- 02:11 PM PDT     9.68 feet High Tide
Thu -- 02:38 PM PDT     Moonset
Thu -- 07:30 PM PDT     Sunset
Thu -- 09:16 PM PDT     4.62 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.58.8101111.611.711.410.810.29.89.69.59.59.69.79.69.18.37.36.15.14.64.85.5

Tide / Current Tables for Boat Passage, British Columbia Current
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Boat Passage
Click for Map
Thu -- 02:03 AM PDT     -0.01 knots Slack
Thu -- 04:55 AM PDT     Moonrise
Thu -- 05:06 AM PDT     -2.54 knots Max Ebb
Thu -- 07:08 AM PDT     Sunrise
Thu -- 08:18 AM PDT     0.00 knots Slack
Thu -- 10:40 AM PDT     1.49 knots Max Flood
Thu -- 01:09 PM PDT     -0.00 knots Slack
Thu -- 02:38 PM PDT     Moonset
Thu -- 04:46 PM PDT     -2.82 knots Max Ebb
Thu -- 07:30 PM PDT     Sunset
Thu -- 07:42 PM PDT     0.00 knots Slack
Thu -- 11:10 PM PDT     3.79 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.51.40.1-1.2-2.1-2.5-2.3-1.5-0.30.71.41.510.2-0.9-1.9-2.6-2.8-2.3-1.10.52.13.33.8

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 (22,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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weather_mapweather_map weather_map

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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.