Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
Vashon, WA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:05AMSunset 5:40PM Tuesday February 19, 2019 11:15 PM PST (07:15 UTC) Moonrise 5:59PMMoonset 7:30AM Illumination 99% Phase: Full Moon; Moon at 16 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- 844 Pm Pst Tue Feb 19 2019
.small craft advisory in effect until 7 am pst Wednesday...
Tonight..SW wind 15 to 25 kt becoming nw N part after midnight. Wind waves 2 to 4 ft. Rain likely in the evening then showers likely after midnight.
Wed..SW wind 5 to 15 kt S part. NW wind 5 to 15 kt N part. Wind waves 2 ft or less. Showers likely in the morning then a chance of showers in the afternoon.
Wed night..NE wind to 10 kt. Wind waves 1 ft or less. A slight chance of showers in the evening.
Thu..NE wind to 10 kt becoming N in the afternoon. Wind waves 1 ft or less.
Thu night..N wind to 10 kt becoming S after midnight. Wind waves 1 ft or less.
Fri..S wind to 10 kt becoming 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Fri night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Sat..S wind 5 to 15 kt becoming se to 10 kt. Wind waves 2 ft or less.
Sun..NE wind to 10 kt. Wind waves 1 ft or less.
PZZ100 844 Pm Pst Tue Feb 19 2019
Synopsis for the northern and central washington coastal and inland waters..A frontal system will move inland tonight. Northerly flow will develop on Wednesday and then turn more northeasterly Wednesday night and Thursday as high pressure moves over southern british columbia. A second frontal system will reach the area on Friday. Northeasterly offshore flow will develop over the weekend.


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 200444
afdsew
area forecast discussion
national weather service seattle wa
844 pm pst Tue feb 19 2019

Synopsis A frontal system will move inland tonight with an
upper trough over the area on Wednesday for some lingering
showers. Dry northerly flow aloft will prevail Wednesday night
and Thursday. A second frontal system will reach the area on
Friday followed by a cool upper trough on Saturday. An upper
trough will linger over the area into early next week.

Short term tonight through Friday A front is currently moving
inland and rain has chance to showers. The mountains will pick up
several more inches of snow tonight before showers taper. Showers
will linger into Wednesday with a broad upper trough over the
area but the trend will be for decreasing activity during the day.

Showers should end Wednesday night with a dry day on Thursday
under cool northerly flow aloft. A second frontal system will drop
down from the northwest on Friday for another round of rain and
mountain snow.

Snow levels will remain low for the next few days with the
lowlands flirting with snow at times but widespread accumulations
are not expected. For tonight and Wednesday morning there could
be spotty light accumulations on higher hills and locations away
from the water closer to the cascades. A puget sound convergence
zone could also bring local accumulations. The Friday system could
also bring a little low elevation snow, especially in the morning
before temperatures warm during the day but low level southerly
winds should be a limiting factor. Schneider

Long term Saturday through Tuesday Previous discussion... The
forecast challenges of the short term continue into the long term
today.

The past 3 runs of the GFS model show upper level troughing
amplifying over the area late Saturday into Sunday. As an upper
low drops just south of seattle, the GFS forms a deformation band
into the central puget sound area Saturday night into Sunday night
and indicates possibly several inches of snow down to near sea
level (the 18z solution is farther north with the band, more into
skagit county). The ECMWF is cold but drier. At this point, it is
anyones guess, but it does appear that cold and unsettled
conditions will keep things interesting through the weekend.

A southern stream system moving into cold air in place over the
region later Monday or Tuesday may make for more interesting
times, though models are having a hard time as the pattern shows
some signs of breaking down.

At this time, the forecast was initialized with the national blend
of models and will be refined as we get closer to the events. But
it does appear that temperatures will remain below normal and
weather will generally be active for the next week or so. Albrecht

Aviation A frontal system will move inland tonight with a broad
upper trough over the area on Wednesday and northerly flow aloft.

At the surface, onshore flow behind the front tonight will turn
more northerly on Wednesday as high pressure builds over southern
british columbia. The air mass is moist and slightly unstable.

Low clouds will be prevalent tonight and Wednesday morning.

Ceilings should improve later Wednesday as the low levels dry
with some areas scattering by Wednesday evening.

A puget sound convergence zone will likely form over central
puget sound tonight, shift south Wednesday morning and then fall
apart. Schneider
ksea... Showers and low clouds tonight. A rain snow mix is possible
later tonight but no accumulations are expected. Showers will end
Wednesday morning and ceilings will lift during the day.

Southerly wind 5-10 knots will switch to northerly Wednesday.

Schneider

Marine A frontal system will move inland tonight. Most waters
will have small craft advisory strength westerly winds behind the
front into Wednesday morning. The central and east entrance strait
of juan de fuca could have marginal gales this evening. There will
also be some 12-15 foot west swell moving into the coastal waters
later tonight and Wednesday.

Winds will turn more northerly on Wednesday as high pressure
builds into southern british columbia and then more easterly
Wednesday night and Thursday as the high pressure shifts
southeast.

A second frontal system will drop down from the northwest on
Friday. Northeasterly offshore flow will develop next weekend as
high pressure builds over the interior of british columbia again.

Schneider

Hydrology River flooding is not expected for the next 7 days.

Sew watches warnings advisories
Wa... Winter storm warning until 6 am pst Wednesday for cascades of
pierce and lewis counties-cascades of snohomish and king
counties.

Winter weather advisory until 6 am pst Wednesday for cascades of
whatcom and skagit counties.

Pz... Small craft advisory until 10 pm pst Wednesday for coastal
waters from CAPE flattery to james island 10 to 60 nm-
coastal waters from james island to point grenville 10 to
60 nm-coastal waters from point grenville to cape
shoalwater 10 to 60 nm.

Small craft advisory for rough bar from 10 pm this evening to 4
pm pst Wednesday for grays harbor bar.

Small craft advisory until 10 am pst Wednesday for admiralty
inlet-coastal waters from CAPE flattery to james island out
10 nm-coastal waters from james island to point grenville
out 10 nm-coastal waters from point grenville to cape
shoalwater out 10 nm-northern inland waters including the
san juan islands-west entrance u.S. Waters strait of juan
de fuca.

Small craft advisory from 1 am to 7 am pst Wednesday for central
u.S. Waters strait of juan de fuca-east entrance u.S.

Waters strait of juan de fuca.

Gale warning until 1 am pst Wednesday for central u.S. Waters
strait of juan de fuca-east entrance u.S. Waters strait of
juan de fuca.

Small craft advisory until 7 am pst Wednesday for puget sound
and hood canal.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 9 mi34 min ESE 1.9 G 4.1
TCNW1 - 9446484 - Tacoma, WA 10 mi34 min 41°F 48°F1011.5 hPa
46121 17 mi34 min 40°F 1011.2 hPa37°F
WPOW1 - West Point, WA 18 mi76 min S 4.1 G 5.1 41°F 1011.2 hPa (-1.2)38°F
46120 25 mi27 min Calm 42°F 1010.4 hPa38°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 mi23 minN 010.00 miOvercast39°F35°F86%1011.1 hPa
Tacoma, Tacoma Narrows Airport, WA11 mi23 minS 410.00 miOvercast38°F35°F89%1010.8 hPa
Boeing Field - King County International Airport, WA12 mi23 minN 010.00 miMostly Cloudy40°F36°F86%1010.9 hPa
Renton Municipal Airport, WA14 mi23 minN 08.00 miLight Rain40°F37°F93%1011.4 hPa
Tacoma / McChord Air Force Base, WA17 mi78 minS 810.00 miOvercast38°F38°F100%1011.8 hPa
Bremerton, Bremerton National Airport, WA17 mi20 minN 010.00 miMostly Cloudy33°F32°F96%1012.4 hPa
Fort Lewis / Gray U. S. Army Airfield, WA22 mi78 minSSE 410.00 miOvercast39°F39°F100%1011.7 hPa
Pierce County-Thun Field, WA22 mi21 minN 010.00 miOvercast39°F39°F100%1010.8 hPa

Wind History from SEA (wind in knots)
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Last 24hrS5S7S5S6S7S3Calm4SW6S7SW85S8SW7S12S8S11S13
G18
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1 day agoE4SE5SE5SE4SE6SE3SE4SE4SE7SE6S4S5S3SE4S8SW6SW5CalmNE3E3SE4SE4SE6SE6
2 days agoS5S4SE4SE3SE4SE4CalmSE3S3S3NW3CalmCalmN5N5N4N3N3CalmS3S4S3SE5SE3

Tide / Current Tables for Burton, Quartermaster Harbor (inside), Washington
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Burton
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Wed -- 05:51 AM PST     13.75 feet High Tide
Wed -- 07:06 AM PST     Sunrise
Wed -- 08:02 AM PST     Moonset
Wed -- 11:37 AM PST     4.70 feet Low Tide
Wed -- 04:58 PM PST     11.94 feet High Tide
Wed -- 05:41 PM PST     Sunset
Wed -- 07:20 PM PST     Moonrise
Wed -- 11:38 PM PST     -1.19 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.91.64.98.511.413.313.712.911.18.76.454.85.87.79.711.411.911.39.56.93.81-0.8

Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Wed -- 03:16 AM PST     -0.08 knots Slack
Wed -- 06:02 AM PST     -1.56 knots Max Ebb
Wed -- 07:07 AM PST     Sunrise
Wed -- 08:02 AM PST     Moonset
Wed -- 09:16 AM PST     0.07 knots Slack
Wed -- 11:37 AM PST     1.80 knots Max Flood
Wed -- 03:04 PM PST     -0.00 knots Slack
Wed -- 05:41 PM PST     Sunset
Wed -- 06:08 PM PST     -1.61 knots Max Ebb
Wed -- 07:20 PM PST     Moonrise
Wed -- 09:07 PM PST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.81.40.6-1-1.4-1.6-1.5-1.2-0.61.21.71.81.61.10.2-1.1-1.5-1.6-1.5-1.2-0.51.32

Weather Map and Satellite Images
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GOES Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Seattle, WA (2,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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.