Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Langley, 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 5:50AMSunset 8:22PM Saturday April 29, 2017 8:14 PM PDT (03:14 UTC) Moonrise 7:45AMMoonset 11:20PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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- 257 Pm Pdt Sat Apr 29 2017
.small craft advisory in effect through Sunday evening...
Tonight..S wind 15 to 25 kt becoming nw after midnight. Wind waves 2 to 4 ft. Rain in the evening then a chance of rain after midnight.
Sun..NW wind 15 to 25 kt. Wind waves 2 to 4 ft. A slight chance of showers in the morning then a chance of showers in the afternoon.
Sun night..NW wind 15 to 25 kt easing to 10 to 20 kt after midnight. Wind waves 2 to 4 ft. A slight chance of showers.
Mon..S wind to 10 kt in the morning becoming light. Wind waves 1 ft or less.
Mon night..NW wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Tue..Light wind. Wind waves less than 1 ft.
Tue night..NW wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Wed..Variable wind to 10 kt becoming nw 5 to 15 kt. Wind waves 2 ft or less.
Thu..NW wind 5 to 15 kt becoming N 15 to 25 kt. Wind waves 2 ft or less building to 2 to 4 ft.
PZZ100 257 Pm Pdt Sat Apr 29 2017
Synopsis for the northern and central washington coastal and inland waters..A cold front will pass eastward across the waters this evening. It is being preceded by increasing southerly gradients...then will be followed by moderate to strong onshore flow. Moderate to strong onshore flow will continue on Sunday before easing on Sunday night. Generally light wind will prevail from Monday through Wednesday. Onshore flow will again increase next Thursday.

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 292229
afdsew
area forecast discussion
national weather service seattle wa
330 pm pdt Sat apr 29 2017

Synopsis Rain will spread inland this evening. Showers linger
Sunday in the cascades and in a puget sound convergence zone. A weak
weather system will brush the south part of the region on Monday. An
upper ridge will likely keep Tuesday through Thursday dry. A weak
front may arrive Friday, followed by an upper trough Saturday.

Short term Rain is falling on the coast but most inland sites
have recorded only a trace or less. Radar trends indicate rain will
develop 00z-03z this evening over inland areas. Westerly flow aloft
may keep the seattle area in a rain shadow, so while there are
categorical pops most places, seattle has likely pops. A puget sound
convergence zone will develop behind the front late tonight; models
keep it going all day Sunday and into Sunday evening even as most
other places dry out.

Showers will end by Monday morning as heights rise a bit. Models
have a blob of rain moving into oregon and clipping the southern
part of the CWA Monday afternoon. Have adjusted the forecasts to
include chance pops in the mountains, on the coast, and over the
south to account for this feature. Seattle north will be dry. Highs
Sunday and Monday will be mostly in the mid to upper 50s.

Heights rise into the 570s on Tuesday. Even as this strong ridge is
building, models show a weak weather system reaching the coast in
the afternoon and even raining a bit over some inland areas. This
seems overdone, so have limited pops to the coast on Tuesday
afternoon and have slight chance pops over western sections Tuesday
night. Even with some cloudiness, soaring heights on Tuesday should
mean highs reach into the 60s. Burke

Long term An upper ridge will probably keep Wednesday and
Thursday dry. However the models are not quite dry so have kept
slight chance pops in some areas. On Thursday night and Friday an
upper trough, seen in both the GFS and euro, will lower heights and
bring moisture. There may be some drying on Saturday.

The good news is the upper ridge will probably bring some highs in
the 70s on Wednesday and Thursday, possibly including the first 70
degree day this year at ksea. The upper trough will lower temps to
around 60 Friday and Saturday. Burke

Aviation The tail end of an upper trough and a cold front will
push eastward across western washington tonight. Strong westerly
flow aloft tonight will turn to moderate northwest flow aloft on
Sunday. The air mass will be stable and increasingly moist
through this evening. On Sunday, the air mass will be unstable and
somewhat moist below 10,000 feet msl but dry and stable above.

Cigs will come down quickly later this evening with the arrival of
low-level onshore winds behind the cold front. Expect a puget
sound convergence zone (pscz) from late this evening through most
of Sunday in its usual spot between seattle and everett.

Ksea... CIGS will lower steadily this evening. CIGS of 025-035 and
light rain are the most likely conditions during the busier 03z-
05z time frame. The larger area of rain will exit late this
evening, but will then be watching pscz showers to the north of
the terminal from late tonight through most of Sunday. CIGS will
lift with daytime heating on Sunday but will never really scatter
out on Sunday. S-sw wind through Sunday morning. Haner

Marine A cold front will pass eastward across the waters this
evening. It is being preceded by increasing southerly winds. It
will be followed late this evening by moderate to strong onshore
flow. The current forecast has 20-30 knot westerlies through the
strait late tonight and Sunday, but a gale of 34 knots is a
reasonable possibility. Moderate to strong westerly flow will
continue through Sunday, then ease on Sunday night. Light wind
(under 20 knots) will prevail over all the waters from Monday
through Wednesday. A return of moderate to strong onshore flow is
expected on Thursday.

Sew watches/warnings/advisories
Wa... None.

Pz... Small craft advisory until 9 am pdt 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-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 3 am pdt Monday for east entrance
u.S. Waters strait of juan de fuca.

Small craft advisory until 9 pm pdt Sunday for northern inland
waters including the san juan islands.

Small craft advisory until 9 pm pdt Sunday for west entrance
u.S. Waters strait of juan de fuca.

Small craft advisory from 9 pm this evening to 3 am pdt Monday
for central u.S. Waters strait of juan de fuca.

Small craft advisory until midnight pdt Sunday night for
admiralty inlet.

Small craft advisory until midnight pdt tonight for puget sound
and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PTWW1 - 9444900 - Port Townsend, WA 21 mi44 min SE 16 G 18 51°F 49°F1018.8 hPa
WPOW1 - West Point, WA 26 mi74 min SW 17 G 20 49°F 1020.1 hPa (-0.7)42°F
PBFW1 - Padilla Bay Reserve, WA 30 mi44 min S 8.9 49°F 1019 hPa44°F
EBSW1 - 9447130 - Seattle, WA 30 mi44 min W 4.1 G 9.9 49°F 48°F1020.6 hPa
SISW1 - Smith Island, WA 31 mi74 min NE 18 G 21 50°F 1018 hPa (-1.5)
46088 - New Dungeness, WA (Hein Bank) 46 mi54 min NNW 5.8 G 7.8 48°F 49°F1 ft1017.4 hPa47°F
FRDW1 - 9449880 - Friday Harbor, WA 48 mi44 min ESE 2.9 G 6 49°F 49°F1018.3 hPa

Wind History for Port Townsend, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Everett Snohomish County, WA10 mi21 minSSE 1410.00 miOvercast48°F43°F83%1019.4 hPa
Arlington Municipal, WA14 mi19 minSSW 510.00 miOvercast48°F37°F66%1020.3 hPa

Wind History from PAE (wind in knots)
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Last 24hrNW6N5NW5NW5N3N3CalmNE3CalmCalmSE4SE5SE6SE8SE7S10SE12SE10SE15SE11SE12
G18
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1 day ago4NW55NW733CalmSW4S6S6S5SW43CalmCalm45CalmSW5W5SW6NW64NW6
2 days ago3SE343SE4SE7SE7SE5SE7SE6SE7SE8SE9S6SW6NW5NW6NW4N4NW9NW8W9NW9NW10

Tide / Current Tables for Sandy Point, Whidbey Island, Washington
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Sandy Point
Click for Map
Sat -- 01:33 AM PDT     5.21 feet Low Tide
Sat -- 05:53 AM PDT     Sunrise
Sat -- 06:56 AM PDT     11.15 feet High Tide
Sat -- 08:45 AM PDT     Moonrise
Sat -- 01:51 PM PDT     -2.25 feet Low Tide
Sat -- 08:20 PM PDT     Sunset
Sat -- 09:05 PM PDT     11.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.65.45.36.27.89.410.711.110.58.76.13.20.3-1.7-2.2-1.30.93.86.89.511.211.811.410.2

Tide / Current Tables for Port Gamble Bay, Washington Current
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Port Gamble Bay
Click for Map
Sat -- 01:46 AM PDT     0.00 knots Slack
Sat -- 04:21 AM PDT     0.78 knots Max Flood
Sat -- 05:54 AM PDT     Sunrise
Sat -- 07:09 AM PDT     -0.00 knots Slack
Sat -- 08:46 AM PDT     Moonrise
Sat -- 10:55 AM PDT     -1.17 knots Max Ebb
Sat -- 01:45 PM PDT     0.01 knots Slack
Sat -- 05:18 PM PDT     1.88 knots Max Flood
Sat -- 08:20 PM PDT     Sunset
Sat -- 09:24 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.7-0.30.10.50.80.70.50.1-0.3-0.8-1.1-1.2-1-0.50.211.61.91.81.50.90.3-0.3-0.6

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 (23,6,7,8)
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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.