Friday, October20, 2017 L-36.com


Marine Weather and Tides
Langley, 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 7:36AMSunset 6:11PM Friday October 20, 2017 11:05 AM PDT (18:05 UTC) Moonrise 7:21AMMoonset 6:07PM Illumination 0% Phase: New Moon; Moon at 0 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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PZZ134 Admiralty Inlet- 851 Am Pdt Fri Oct 20 2017
.small craft advisory in effect from 1 pm pdt this afternoon through Saturday afternoon...
Today..SE wind to 10 kt becoming S 15 to 25 kt in the afternoon. Wind waves 1 ft or less building to 2 to 4 ft in the afternoon. Showers likely in the morning then showers in the afternoon.
Tonight..S wind 15 to 25 kt becoming se after midnight. Wind waves 2 to 4 ft. A chance of showers.
Sat..SE wind 15 to 25 kt. Wind waves 2 to 4 ft. Rain.
Sat night..SE wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less.
Sun..Light wind. Wind waves less than 1 ft.
Sun night..Light wind. Wind waves less than 1 ft.
Mon..Light wind. Wind waves less than 1 ft.
Tue..NW wind to 10 kt becoming light. Wind waves 1 ft or less.
PZZ100 851 Am Pdt Fri Oct 20 2017
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will prevail today. A vigorous pacific frontal system will move through the area Saturday and Sunday, with southeast gales possible over the coastal waters and some of the inland waters of western washington on Saturday. Weak offshore flow will develop Monday.

7 Day Forecast for Marine Location Near Langley, WA
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location: 48.04, -122.38     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 201623
afdsew
area forecast discussion
national weather service seattle wa
930 am pdt Fri oct 20 2017

Synopsis Showers will continue over the area through tonight with
some mountain snow. A strong storm system will affect the region
over the weekend. Rain will increase Saturday and become heavy at
times, especially over the coast and mountains. There may be snow
accumulation in the cascades Saturday before snow levels rise. Drier
weather will develop Monday and Tuesday.

Short term A shallow upper trough will approach washington today,
then move through tonight. A cool and showery pattern will persist
through tonight. The snow level is around 4000 feet, with snow on
the ground at both stevens and white passes. A few inches of snow
is visible in the paradise parking lot. Mesoscale models show a
convergence zone forming this afternoon through this evening,
mainly affecting king and snohomish counties. This will produce
locally heavy precipitation from around north seattle to everett and
east over the cascades. Locally heavy snow in the cascades of king
and snohomish counties could produce 4 to 10 inches of snow above
4000 feet by late tonight, including stevens pass. The snow level
could fall to as low as 3000 feet this evening as the upper trough
passes. A snow advisory is in effect for the cascades of king and
snohomish counties to cover this.

The air mass is weakly unstable, with the most unstable air near the
coast. Isolated thunderstorms are possible on the coast today.

A warm front will bring rain to the coast late tonight; the rain
will spread into the interior Saturday morning. The heaviest rain
with the warm front will first reach western oregon, then move north
over western washington Saturday afternoon and evening. A cold front
will reach the area Sunday morning and rain will turn to showers.

High temperatures will be in the low 50s today, rise to the mid 50s
Saturday, and be near 60 Sunday. Burke

Long term Previous discussion... Residual showers will decrease
and end Monday as high pressure aloft quickly builds north over the
region. Dry weather is expected across the area Monday night and
Tuesday with sunshine and a little warmer daytime temperatures.

Most models still bring a weak front through the area on Wednesday.

This will be a progressive front, so light rain will not stick
around for long. River flooding with this system is not a concern. A
return to dry weather is expected Thursday. Mercer

Hydrology Model runs this morning show overall QPF in most places
similar to previous runs. There has been some change, however. The
nam and GFS both bring heavy rain a bit further north in the
cascades and also now have heavy rain over the olympics. This seems
to be a typical progression in our atmospheric river events--the
rain in early model runs starts out concentrated in certain areas
but in later runs spreads to most areas. Another change is that the
heavy rain appears concentrated in a 12 to 18 hour period, from 18z
Saturday through 12z Sunday.

Total rain amounts could exceed the last storm, especially over the
south central cascades where 4 to 7 inches could fall through
Sunday. Locally higher amounts are possible. Over the lowlands an
inch or so of rain is forecast, except over the south puget sound
region and the southwest interior where around two inches could
fall. Two inches of rain in 12 or 18 hours will probably be enough
to cause some urban and small stream flooding.

The river model shows minor to moderate flooding on most rivers
flowing off the cascades from the skykomish southward, and no
flooding in the northern cascades or the olympics. When the model is
run next, it may show flooding farther north and in the olympics. In
any case, the flood watch remains in effect for all of western
washington. Burke

Aviation Southwest flow aloft continues over western washington
early this morning, ahead of an upper trough over the offshore
waters. The air mass is moist and unstable with low level onshore
flow. The upper flow will veer to westerly today as the trough
moves inland, then increase tonight as a vigorous pacific frontal
system reaches the pacific northwest. The air mass will remain
moist tonight but stabilize.

There is a mix ofVFR and MVFR conditions across the forecast
area, with the lower conditions mainly associated with showers.

Showers should increase somewhat today as the upper trough moves
through, then taper off this evening as it moves east. The
exception will be in a puget sound convergence zone, which will
be north of seattle this evening.

Ksea... MVFR low clouds will linger this morning, with ceilings
increasing to the mid level deck at times. The lower clouds should
be gone by afternoon except perhaps near showers. Ceilings will
lower again late tonight and Saturday morning as a warm front
arrives. South wind 7-13 knots. Mcdonnal

Marine Onshore flow today will turn easterly tonight ahead of
an approaching warm front. Small craft advisory winds will develop
over most of the waters today; the strongest winds will likely be
the westerlies in the central and eastern strait of juan de fuca.

Gales are not out of the question in the strait but they would be
marginal and brief at best.

A vigorous pacific frontal system will move through the area
Saturday and Sunday, with widespread small craft advisory winds.

Gales are possible over the coastal waters, entrances to the
strait, and northern inland waters late tonight and Saturday
morning. There could be another period of gales over the coastal
waters Saturday evening, especially south part.

Onshore flow behind the frontal system will ease and eventually
turn weakly offshore later Monday and continue Tuesday.

West swells of 16 to 19 feet over the coastal waters will
gradually subside today and tonight. Mcdonnal

Sew watches warnings advisories
Wa... Flood watch from Saturday afternoon through Sunday afternoon for
admiralty inlet area-bellevue and vicinity-bremerton and
vicinity-cascades of pierce and lewis counties-cascades of
snohomish and king counties-cascades of whatcom and skagit
counties-central coast-east puget sound lowlands-eastern
strait of juan de fuca-everett and vicinity-hood canal area-
lower chehalis valley area-north coast-olympics-seattle and
vicinity-southwest interior-tacoma area-western skagit
county-western strait of juan de fuca-western whatcom
county.

Winter weather advisory from 1 pm this afternoon to midnight pdt
tonight for cascades of snohomish and king counties.

Pz... Small craft advisory for rough bar until 6 pm pdt this evening
for grays harbor bar.

Gale watch from late tonight through Saturday morning 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 1 am pdt 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.

Gale watch from late tonight through Saturday afternoon for east
entrance u.S. Waters strait of juan de fuca-northern inland
waters including the san juan islands.

Small craft advisory from 1 pm this afternoon to 3 am pdt
Saturday for east entrance u.S. Waters strait of juan de
fuca.

Small craft advisory from 1 pm this afternoon to 11 pm pdt this
evening for northern inland waters including the san juan
islands.

Small craft advisory until 6 pm pdt Saturday for west entrance
u.S. Waters strait of juan de fuca.

Small craft advisory from 1 pm this afternoon to 5 pm pdt
Saturday for admiralty inlet-central u.S. Waters strait of
juan de fuca.

Small craft advisory until 11 pm pdt this evening for puget
sound and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46120 19 mi46 min WSW 19 49°F 1005 hPa46°F
PTWW1 - 9444900 - Port Townsend, WA 21 mi54 min SSE 6 G 7 50°F 50°F1004.8 hPa
WPOW1 - West Point, WA 26 mi66 min S 20 G 23 49°F 1005.8 hPa (+1.9)46°F
PBFW1 - Padilla Bay Reserve, WA 30 mi96 min SSE 8.9 50°F 1004 hPa47°F
EBSW1 - 9447130 - Seattle, WA 30 mi48 min S 8 G 13 49°F 54°F1006.5 hPa
SISW1 - Smith Island, WA 31 mi66 min SE 20 G 22 50°F 1003.6 hPa (+1.0)
FRDW1 - 9449880 - Friday Harbor, WA 48 mi90 min S 5.1 G 8.9 49°F 50°F1003.9 hPa

Wind History for Port Townsend, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Everett Snohomish County, WA10 mi73 minSSE 18 G 2310.00 miMostly Cloudy and Breezy47°F44°F90%1004.7 hPa
Arlington Municipal Airport, WA14 mi70 minSE 1110.00 miOvercast49°F46°F90%1005.6 hPa

Wind History from PAE (wind in knots)
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2 days agoCalmNE4345NE4NE4NW6NW3N3E5E44E6E6E6E5SE8SE75E4SE8SE14SE13
G19

Tide / Current Tables for Sandy Point, Whidbey Island, Washington
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Sandy Point
Click for Map
Fri -- 06:26 AM PDT     10.75 feet High Tide
Fri -- 07:36 AM PDT     Sunrise
Fri -- 08:20 AM PDT     Moonrise
Fri -- 12:00 PM PDT     3.90 feet Low Tide
Fri -- 05:49 PM PDT     10.75 feet High Tide
Fri -- 06:10 PM PDT     Sunset
Fri -- 07:07 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.71.53.35.789.810.710.69.67.964.53.94.45.77.59.210.410.7108.56.23.61.4

Tide / Current Tables for Port Gamble Bay, Washington Current
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Port Gamble Bay
Click for Map
Fri -- 03:00 AM PDT     1.41 knots Max Flood
Fri -- 06:41 AM PDT     -0.00 knots Slack
Fri -- 07:37 AM PDT     Sunrise
Fri -- 08:21 AM PDT     Moonrise
Fri -- 09:33 AM PDT     -0.76 knots Max Ebb
Fri -- 12:07 PM PDT     0.00 knots Slack
Fri -- 02:56 PM PDT     0.90 knots Max Flood
Fri -- 05:59 PM PDT     -0.00 knots Slack
Fri -- 06:11 PM PDT     Sunset
Fri -- 07:08 PM PDT     Moonset
Fri -- 09:31 PM PDT     -1.01 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.81.31.41.30.90.4-0.1-0.5-0.7-0.7-0.5-00.40.80.90.80.5-0-0.4-0.8-1-1-0.7

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 (14,3,4,5)
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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.