Friday, November17, 2017 L-36.com


Marine Weather and Tides
Burien, 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 7:17AMSunset 4:31PM Friday November 17, 2017 4:56 PM PST (00:56 UTC) Moonrise 6:13AMMoonset 4:39PM Illumination 1% Phase: Waning Crescent; Moon at 29 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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PZZ135 Puget Sound And Hood Canal- 259 Pm Pst Fri Nov 17 2017
.small craft advisory in effect from Saturday morning through Saturday afternoon...
Tonight..S wind 5 to 15 kt becoming 10 to 20 kt after midnight. Wind waves 1 to 3 ft. A slight chance of showers.
Sat..S wind 10 to 20 kt rising to 15 to 25 kt in the afternoon. Wind waves 2 to 4 ft.
Sat night..S wind 10 to 20 kt rising to 15 to 25 kt after midnight. Wind waves 2 to 4 ft. A chance of rain after midnight.
Sun..S wind 20 to 30 kt. Wind waves 3 to 5 ft.
Sun night..SW wind 10 to 20 kt easing to 10 kt after midnight. Wind waves 1 to 3 ft.
Mon..N wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Mon night..Light wind. Wind waves less than 1 ft.
Tue..Light wind becoming se 10 to 20 kt. Wind waves 1 to 3 ft.
Wed..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
PZZ100 259 Pm Pst Fri Nov 17 2017
Synopsis for the northern and central washington coastal and inland waters..A cold front will move down the british columbia coast on Saturday night, then move southeast through the waters on Sunday. The front will be preceded by increasing s-se wind, with gales expected over much of the waters before frontal passage later Sunday. A high pressure center will pass across the waters on Monday. A strong warm front will push northward through the waters on Tuesday. A strong low pressure center should move north well offshore to near haida gwaii on Wednesday.

7 Day Forecast for Marine Location Near Burien, WA
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location: 47.48, -122.4     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 172322
afdsew
area forecast discussion
national weather service seattle wa
322 pm pst Fri nov 17 2017

Synopsis Weak high pressure will be over the area tonight and
Saturday. A strong front will reach the area Sunday--heavy rain
is likely in the olympics, and windy weather is possible for some
areas. Periods of wet weather with rather mild temperatures are
likely next week--with windy conditions possible at times.

Short term A little light snow shower activity will taper off and
conditions will be mostly dry with partly to mostly cloudy skies
through Saturday. A strong front will be hung up over the b.C. Coast
and vancouver island Saturday and Saturday night and prefrontal
pressure gradients will pick up over western washington Saturday
night. Pressure gradients look strong enough for wind advisory
strength winds Sunday morning from around admiralty inlet north
through the san juans and it should be windy on the coast, but not
too notable. There will be heavy rain in the olympics and a decent
rain shadow in the lee of the olympics--and then the rain will close
in over most areas in the afternoon and pressure gradients will
become light into the evening hours. The front is into oregon by
late Sunday evening.

Long term The front that moves through western washington Sunday
afternoon will be over northern california and oregon later Sunday
night and Monday morning. The GFS shows a dry day for western
washington on Monday. Rain moves back into western washington
Tuesday afternoon and evening. The heavier rain shifts to the b.C.

Coast and vancouver island for Wednesday and Wednesday night then
back down through the area Thursday. It will become unusually mild--
the 700mb temp will rise to around 0c and 850mb temps will peak
around +9c. That does not bode well for the ski areas by the middle
of next week. The good news is that the models do not have
especially heavy rain, but that might change again and bears
watching.

Aviation A flat upper ridge axis will move eastward across
western washington on Saturday. A wet cold front will be spreading
down the b.C. Coast on Saturday evening. Moderate northwest flow
aloft, becoming westerly this evening. The low-level air mass is
moist and unstable, but the instability will become shallower
tonight and Saturday, with some drying on Saturday morning.

Convective showers will continue to decrease in both coverage and
intensity through tonight. Moistness of the air mass will support
cigs in the 010-020 range across the interior late tonight, but then
low-level drying on Saturday, will help dissipate low clouds.

Ksea... Southerly surface wind for next 30 hours and beyond. CIGS in
the 030-040 range are most likely early this evening. CIGS may drop
below 020 for a time late this evening or overnight. Low-level air
mass will experience some drying on Saturday morning, so clouds
below 100 will dissipate Saturday morning. Few if any clouds below
100 from late Saturday morning into Saturday evening. Haner

Marine A cold front will move down the british columbia
coast on Saturday night, then move southeast across the waters on
Sunday. The front will be preceded by increasing s-se wind on
Saturday, with gales expected over much of the waters starting
Saturday night. Following frontal passage late Sunday, winds will
quickly ease on Sunday evening. A high pressure center will pass
across the waters on Monday with light wind. A strong warm front
will push northward through the waters on Tuesday. A strong low
pressure center should move northward well offshore to near haida
gwaii on Wednesday. Haner

Hydrology Heavy rain will fall in the olympics on Sunday so
that will drive the skokomish river in mason county up again.

Mild wet weather is likely from about Tuesday afternoon through
about Thursday of next week--possibly resulting in flooding with the
best chance again on the skokomish.

Sew watches warnings advisories
Wa... Flood watch from Sunday morning through Monday morning for hood
canal area-lower chehalis valley area-olympics.

Pz... Small craft advisory from 3 am to 3 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.

Gale warning from 3 pm Saturday to 3 pm pst Sunday for coastal
waters from point grenville to CAPE shoalwater 10 to 60 nm.

Gale warning from 3 pm Saturday to noon pst Sunday 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.

Small craft advisory from 9 am to 6 pm pst Saturday for coastal
waters from point grenville to CAPE shoalwater out 10 nm.

Gale warning from 6 pm Saturday to 3 pm pst Sunday for admiralty
inlet-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 from 3 am to 6 pm pst Saturday for east
entrance u.S. Waters strait of juan de fuca.

Small craft advisory from midnight tonight to 6 pm pst Saturday
for northern inland waters including the san juan islands.

Small craft advisory from 6 am to 6 pm pst Saturday for
admiralty inlet-west entrance u.S. Waters strait of juan de
fuca.

Gale warning from 6 pm Saturday to noon pst Sunday for west
entrance u.S. Waters strait of juan de fuca.

Small craft advisory from 9 am to 3 pm pst Saturday for puget
sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 13 mi56 min SSW 13 G 15 49°F 1022.7 hPa (+2.2)38°F
46120 19 mi33 min W 12 49°F 1021.9 hPa42°F
46121 22 mi35 min 7.8 47°F 1022.6 hPa40°F

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boeing Field - King County International Airport, WA6 mi63 minS 710.00 miMostly Cloudy48°F37°F68%1022.7 hPa
Seattle, Seattle-Tacoma International Airport, WA6 mi63 minS 1210.00 miMostly Cloudy47°F37°F71%1023.3 hPa
Renton Municipal Airport, WA10 mi63 minS 810.00 miMostly Cloudy49°F39°F69%1023.2 hPa
Tacoma, Tacoma Narrows Airport, WA17 mi63 minS 810.00 miPartly Cloudy45°F39°F83%1023.4 hPa
Bremerton, Bremerton National Airport, WA20 mi60 minSSW 610.00 miFair45°F37°F77%1024.2 hPa
Tacoma / McChord Air Force Base, WA23 mi58 minS 710.00 miOvercast43°F43°F99%1024 hPa

Wind History from BFI (wind in knots)
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Last 24hrS7S10SE8SE10S9
G16
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G16
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G16
SE7S8S4SE6S6S7SW654SW4SW6SW7S9
G19
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1 day agoS7S7S7S6S4SE5S8S7S7S6S10
G18
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S7S9S8S8S76
G14
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G25
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SW3W3S10S12S9S7SE8S14SE13SE9SE9S8S8
G16
S7

Tide / Current Tables for Point Vashon, Vashon Island, Puget Sound, Washington
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Point Vashon
Click for Map
Fri -- 04:48 AM PST     11.00 feet High Tide
Fri -- 06:12 AM PST     Moonrise
Fri -- 07:18 AM PST     Sunrise
Fri -- 10:07 AM PST     5.50 feet Low Tide
Fri -- 03:31 PM PST     11.33 feet High Tide
Fri -- 04:31 PM PST     Sunset
Fri -- 04:39 PM PST     Moonset
Fri -- 10:22 PM PST     -0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.65.17.69.610.71110.49.17.56.15.55.878.610.211.211.210.28.45.830.7-0.5-0.3

Tide / Current Tables for Skagit Bay, 1 mile N of Rocky Point, Washington Current
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Skagit Bay
Click for Map
Fri -- 02:41 AM PST     0.96 knots Max Flood
Fri -- 04:53 AM PST     -0.00 knots Slack
Fri -- 06:13 AM PST     Moonrise
Fri -- 07:18 AM PST     Sunrise
Fri -- 09:41 AM PST     -0.87 knots Max Ebb
Fri -- 11:13 AM PST     0.00 knots Slack
Fri -- 02:24 PM PST     0.48 knots Max Flood
Fri -- 03:37 PM PST     -0.00 knots Slack
Fri -- 04:31 PM PST     Sunset
Fri -- 04:40 PM PST     Moonset
Fri -- 09:28 PM PST     -1.40 knots Max Ebb
Fri -- 11:23 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.80.90.90.6-0-0.3-0.6-0.7-0.8-0.8-0.20.20.40.50.4-0.1-0.4-0.8-1.1-1.3-1.4-1.3-0.4

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 (19,4,5,8)
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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.