Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Vashon, WA

Version 3.4
What's New / NOTES
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 5:18AMSunset 8:54PM Thursday May 25, 2017 11:20 AM PDT (18:20 UTC) Moonrise 4:45AMMoonset 7:48PM 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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PZZ135 Puget Sound And Hood Canal- 900 Am Pdt Thu May 25 2017
Today..Light wind becoming N 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tonight..N wind 5 to 15 kt...becoming ne to 10 kt after midnight. Wind waves 2 ft or less.
Fri..Light wind becoming N 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Fri night..N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Sat..Light wind becoming N 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Sat night..NW wind 5 to 15 kt in the evening becoming light. Wind waves 2 ft or less.
Sun..N wind 5 to 15 kt. Wind waves 2 ft or less.
Mon..N wind 5 to 15 kt becoming sw. Wind waves 2 ft or less.
PZZ100 900 Am Pdt Thu May 25 2017
Synopsis for the northern and central washington coastal and inland waters..High pressure over the northeast pacific along with lower pressure east of the cascades will maintain light onshore flow through Friday. High pressure offshore will weaken and shift further west on Saturday...causing the flow to become more northerly.

7 Day Forecast for Marine Location Near Vashon, WA
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location: 47.4, -122.46     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 251637
afdsew
area forecast discussion
national weather service seattle wa
937 am pdt Thu may 25 2017

Synopsis Temperatures will slowly rebound today with enough
moisture and instability for a few afternoon showers and
thunderstorms over the cascades. A warm and dry upper ridge axis
off the coast on Friday will pass directly over western washington
on Saturday. Its warm and dry influence will continue from Sunday
through Tuesday, including memorial day.

Short term Slightly cyclonic northerly flow aloft will prevail
today with an upper ridge offshore and an upper trough over the
intermountain west. This is not a classic thunderstorm pattern
but there is enough lingering instability and moisture for a
slight chance of thunderstorms near the cascade crest from about
mid afternoon to early evening today. Otherwise, it looks like a
mostly sunny day with highs warming to a few degrees above normal.

The offshore upper ridge will move closer to the region on Friday
and then overhead this weekend. At the same time, low level
onshore flow will weaken slightly and turn a bit more northerly.

All of this means there will be an extended warm and dry period.

Highs should climb into the 70s most areas on Friday. Highs in
the lower to mid 80s will be common this weekend with mid 60s and
70s near the coast and water. Schneider

Long term Previous discussion... Beyond the holiday... The first
half of next week seems to want to transition a bit. Starting
with late Monday night... Models remain consistent on some degree
of instability and scattered precip signatures possibly signaling
a bit of a marine push... Though not nearly as intense as the
previous one. Still looks to be enough to start cooling temps with
afternoon highs Tue falling back into the upper 70s for the
interior. This downward trend will continue as an upper level
trough starts to approach the area by midweek... Where we finally
start to see the prospect of showers re-enter the forecast. Smr

Aviation Light northerly flow over western washington through
Friday with a trough over the rockies and high pressure aloft over
the northeast pacific. Light low level onshore flow. The air mass is
somewhat moist in the lower and mid levels and dry above 10k ft.

Generally stable conditions except weakly unstable over the cascades
this afternoon and early evening leading to a chance of isolated
thunderstorms. These are not expected to reach the lowlands or
affect any terminals. Any thunderstorms will dissipate after sunset.

Patchy low clouds and fog around the southwest interior will scatter
out by 17-18z. MVFR stratus near the coast and affecting hqm
may briefly scatter after 22z.

Ksea...VFR. Light and variable winds will become NW near 10 knots
this afternoon. Dtm

Marine High pressure centered over the northeast pacific along
with lower pressure east of the cascades will result in light
onshore flow through Friday. The offshore high will weaken and
redevelop farther west on Saturday, causing the flow to become light
northerly. Diurnally driven small craft winds are expected in the
central eastern strait late this afternoon and evening. Hazardous
seas around 10 feet over the coastal waters will subside to 7 to 8
ft during the afternoon. Dtm

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory for hazardous seas until 3 pm pdt this
afternoon 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 from 3 pm this afternoon to midnight pdt
tonight for central u.S. Waters strait of juan de fuca-east
entrance u.S. Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 9 mi62 min WNW 4.1 G 5.1
TCNW1 - 9446484 - Tacoma, WA 10 mi62 min 54°F 52°F1013 hPa
EBSW1 - 9447130 - Seattle, WA 15 mi62 min W 1.9 G 2.9 54°F 52°F1012.9 hPa
46121 16 mi1437 min 1.9 54°F 1012.6 hPa47°F
WPOW1 - West Point, WA 18 mi80 min S 2.9 G 4.1 53°F 1013 hPa (-0.4)50°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Seattle, Seattle-Tacoma International Airport, WA8 mi27 minWSW 610.00 miPartly Cloudy60°F46°F62%1013.1 hPa
Tacoma, Tacoma Narrows Airport, WA11 mi27 minVar 310.00 miPartly Cloudy57°F46°F67%1012.7 hPa
Seattle, Seattle Boeing Field, WA12 mi27 minVar 310.00 miFair60°F50°F70%1012.4 hPa
Renton, Renton Municipal Airport, WA14 mi27 minNNW 410.00 miFair60°F46°F62%1012.8 hPa
Bremerton, Bremerton National Airport, WA17 mi24 minN 010.00 miPartly Cloudy59°F44°F58%1014.3 hPa
Tacoma / McChord Air Force Base, WA17 mi22 minN 010.00 miMostly Cloudy60°F48°F67%1012.9 hPa
Pierce County-Thun Field, WA22 mi25 minN 010.00 mi63°F46°F56%1012.5 hPa
Fort Lewis / Gray U. S. Army Airfield, WA22 mi81 minVar 110.00 miA Few Clouds58°F45°F64%1013.9 hPa

Wind History from SEA (wind in knots)
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Last 24hrSE53CalmCalmNE7N45N7N5N6N6NE5NW4CalmCalmCalmSE3SE6SE5S5Calm4NW5SW6
1 day agoSW6W7W6S10SW11W8SW8NE13NE11W5W8SW63NE12NE6E8S7S7S5SE5SE8S11SW6SW6
2 days agoN9N6NE9NW7NW9N9N12N5N6NW4N7N7N9NE9NW4CalmN3E5NW3N4N3W4W5W7

Tide / Current Tables for Burton, Quartermaster Hbr. (inside), Vashon I., Puget Sound, Washington
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Burton
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Thu -- 04:18 AM PDT     12.62 feet High Tide
Thu -- 05:22 AM PDT     Sunrise
Thu -- 05:45 AM PDT     Moonrise
Thu -- 11:15 AM PDT     -2.58 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 06:13 PM PDT     12.29 feet High Tide
Thu -- 08:47 PM PDT     Moonset
Thu -- 08:52 PM PDT     Sunset
Thu -- 11:43 PM PDT     5.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
67.69.711.512.612.310.88.24.91.6-1.2-2.5-2.103.16.59.411.412.31210.99.17.36

Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Thu -- 02:16 AM PDT     -0.00 knots Slack
Thu -- 05:22 AM PDT     Sunrise
Thu -- 05:32 AM PDT     -1.62 knots Max Ebb
Thu -- 05:45 AM PDT     Moonrise
Thu -- 08:32 AM PDT     0.00 knots Slack
Thu -- 11:29 AM PDT     2.15 knots Max Flood
Thu -- 12:46 PM PDT     New Moon
Thu -- 03:30 PM PDT     -0.08 knots Slack
Thu -- 06:13 PM PDT     -1.50 knots Max Ebb
Thu -- 08:47 PM PDT     Moonset
Thu -- 08:52 PM PDT     Sunset
Thu -- 09:17 PM PDT     0.04 knots Slack
Thu -- 11:43 PM PDT     1.72 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.20.5-0.9-1.4-1.6-1.6-1.4-0.90.91.72.12.11.91.50.8-0.9-1.3-1.5-1.4-1.1-0.611.6

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 (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.