Tuesday, June19, 2018 L-36.com


Marine Weather and Tides
Burien, WA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:10AMSunset 9:11PM Tuesday June 19, 2018 7:05 PM PDT (02:05 UTC) Moonrise 11:17AMMoonset 12:05AM Illumination 41% Phase: Waxing Crescent; Moon at 7 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- 249 Pm Pdt Tue Jun 19 2018
Tonight..NW wind 10 kt or less. Wind waves 1 ft or less.
Wed..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Wed night..NW wind 5 to 15 kt becoming s. Wind waves 2 ft or less.
Thu and Thu night..SW wind 5 to 15 kt. Wind waves 2 ft or less.
Fri..Variable wind 10 kt or less. Wind waves 1 ft or less.
Fri night..NW wind 5 to 15 kt. Wind waves 2 ft or less.
Sat..Variable wind 10 kt or less. Wind waves 1 ft or less.
Sun..N wind 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 249 Pm Pdt Tue Jun 19 2018
Synopsis for the northern and central washington coastal and inland waters..Weak onshore flow will become nearly flat overnight. Onshore or westerly flow will return on Wednesday and strengthen for the possibility of gale force winds over parts of the strait of juan de fuca Wednesday night. High pres offshore with lower pres E of the cascades will result in onshore flow of varying strength Thursday through this weekend.

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 192227
afdsew
area forecast discussion
national weather service seattle wa
325 pm pdt Tue jun 19 2018

Synopsis An upper ridge will move east of the cascades tonight
and Wednesday. Western washington will be sunny with near record
highs, although a chance for showers with isolated thunderstorms
over the cascades will be present Wednesday afternoon and evening.

Onshore flow will bring cooler marine air inland Thursday and
Friday. High pressure aloft will cross the region Saturday, followed
by an upper trough early next week.

Short term Morning stratus receded as expected with partly to
mostly sunny skies over W wa. Starting to see some cumulus
development over the cascade crest... But not terribly impressed with
it. In coordination with surrounding offices... Have agreed to trim
pops there for this evening as well as eliminate thunder risk.

Turning focus to current temps... Most locations on average running a
few degrees cooler that obs from 24 hours ago and that lines up well
with forecast highs for the day.

Temp forecasts continue to look like tomorrow will see near-record
to record heat over the area as alterations to inherited forecast
were minor. That being said... Earlier quandary regarding the need
for any heat headlines ended up answering itself with a little
coordination. With conditions still cooling sufficiently during the
evening and overnight hours... This should be enough to help offset
any major concerns... Even though groups sensitive to prolonged
exposure to heat will want to use caution during the day Wed and
anyone finding themselves outside for a while will want to stay
hydrated.

Although it failed to materialize today... Models remain persistent
in showing that the prospects for showers and isolated thunderstorms
looks better for tomorrow over the cascades... Thanks to high level
moisture wrapping around the north side of the upper low entering
into montana and a dash of weak upper instability.

Afterward... More moderate conditions are on the way as stronger
onshore flow will develop Wed evening, as the leading edge of an
offshore upper trough moves into the pac nw. A cool, moist marine
layer should push inland Wed night and W wa will probably be more or
less covered by marine stratus Thursday morning, which should give
way to Sun breaks in the afternoon. Highs across the interior
lowlands should be back into the upper 60s and 70s, with mid 60s at
the coast. As the upper level trough passes through the northern
third of the CWA Thursday... Resulting in some slight chance pops
over much of the area... But the biggest impact will be temperatures
cooling even further with lowland locations dipping down into the
mid 60s to around 70. Smr

Long term As the trough exits... Upper level ridging will build in
once more... Moving inland Saturday and east of the cascades Sunday,
for more sunshine and somewhat warmer weather. Models coming into
better alignment with regards to follow-up trough for Monday... But
pop signatures on either model not terribly impressive... As one
would expect for summer. Like the trough discussed in the short term
forecast above though... Its main impact will be bringing temps over
the area down back into the mid 60s to around 70. Smr

Aviation Wrn wa will remain mostly btwn upper level ridges
centered over british columbia and near the W coast of NRN baja
ca, and upper level lows centered offshore and over mt. Light and
variable flow aloft will become light sly late tonight. Weak low
level onshore flow will become nearly flat overnight.

Meanwhile, expect generally ifr CIGS areas of MVFR vsbys to
overspread the coast this evening. Low clouds areas of fog will
reach the admiralty inlet area, the puget sound, and the sw
interior by 1200 utc. Overall, anticipating slightly less low
cloud coverage Wednesday morning compared to this morning.

Ksea...VFR. Will probably see some low clouds off to the west of
the airport again Wednesday morning. Winds will generally be light
and variable.

Marine
Weak onshore flow will become nearly flat overnight. Onshore or
westerly flow will return on Wednesday and strengthen for the
possibility of gale force winds over parts of the strait of juan
de fuca Wednesday night. High pressure offshore with lower
pressure east of the cascades will result in generally moderate
onshore flow Thursday through this weekend. Gale force winds will
be possible again over parts of the strait of juan de fuca
Thursday evening.

Sew watches warnings advisories
Wa... None.

Pz... Gale watch from Wednesday evening through late Wednesday night
for central u.S. Waters strait of juan de fuca-east
entrance u.S. Waters strait of juan de fuca.

Small craft advisory from 7 pm this evening to 1 am pdt
Wednesday for east entrance u.S. Waters strait of juan de
fuca.

Small craft advisory until 1 am pdt Wednesday for central u.S.

Waters strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
EBSW1 - 9447130 - Seattle, WA 9 mi48 min WNW 1.9 G 5.1 71°F 53°F1015.4 hPa
WPOW1 - West Point, WA 13 mi66 min NE 8 G 8 65°F 1015.4 hPa (-1.4)57°F
TCMW1 - 9446482 - Tacoma Met, WA 14 mi54 min N 1.9 G 2.9
TCNW1 - 9446484 - Tacoma, WA 15 mi54 min 83°F 53°F1015.2 hPa
46121 22 mi53 min 70°F 1015.1 hPa62°F
46125 32 mi52 min 16 58°F 1014.9 hPa55°F
PTWW1 - 9444900 - Port Townsend, WA 48 mi54 min W 5.1 G 8.9 65°F 52°F1016.3 hPa

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 mi73 minVar 510.00 miA Few Clouds84°F53°F34%1014.8 hPa
Seattle, Seattle-Tacoma International Airport, WA6 mi73 minVar 410.00 miPartly Cloudy84°F51°F32%1016 hPa
Renton Municipal Airport, WA10 mi73 minNNW 410.00 miFair85°F54°F35%1015.2 hPa
Tacoma, Tacoma Narrows Airport, WA17 mi73 minWSW 510.00 miPartly Cloudy80°F57°F47%1015.1 hPa
Bremerton, Bremerton National Airport, WA20 mi70 minN 010.00 miFair83°F59°F44%1016.7 hPa
Tacoma / McChord Air Force Base, WA23 mi68 minWNW 310.00 miFair82°F63°F53%1015.8 hPa

Wind History from BFI (wind in knots)
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Last 24hrSW4S8S5S5S8S6S4SE8S7S6S4S3SW3SW4533S444SW6W55Calm
1 day ago3NW3CalmSE4CalmCalmSE3CalmSE3CalmS5SE5SE4CalmS4Calm4W8CalmS7SW6S8S76
2 days agoNE43CalmCalmCalmS4SE4CalmNW3CalmCalmCalmNE3NW4N46NW9
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56

Tide / Current Tables for Point Vashon, Vashon Island, Puget Sound, Washington
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Point Vashon
Click for Map
Tue -- 01:05 AM PDT     Moonset
Tue -- 04:51 AM PDT     5.13 feet Low Tide
Tue -- 05:12 AM PDT     Sunrise
Tue -- 09:44 AM PDT     8.72 feet High Tide
Tue -- 12:16 PM PDT     Moonrise
Tue -- 04:09 PM PDT     0.06 feet Low Tide
Tue -- 09:10 PM PDT     Sunset
Tue -- 11:26 PM PDT     12.43 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
11.710.38.46.65.45.15.66.57.68.58.78.16.74.72.60.90.10.52.14.47.19.611.412.3

Tide / Current Tables for Skagit Bay, 1 mile N of Rocky Point, Washington Current
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Skagit Bay
Click for Map
Tue -- 01:05 AM PDT     Moonset
Tue -- 03:53 AM PDT     -1.10 knots Max Ebb
Tue -- 05:12 AM PDT     Sunrise
Tue -- 06:08 AM PDT     0.00 knots Slack
Tue -- 08:51 AM PDT     0.29 knots Max Flood
Tue -- 09:43 AM PDT     -0.00 knots Slack
Tue -- 12:17 PM PDT     Moonrise
Tue -- 03:29 PM PDT     -1.05 knots Max Ebb
Tue -- 05:07 PM PDT     0.00 knots Slack
Tue -- 09:10 PM PDT     Sunset
Tue -- 09:16 PM PDT     0.99 knots Max Flood
Tue -- 11:30 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.7-0.9-1.1-1.1-0.7-0.10.20.30.3-0.1-0.3-0.5-0.8-0.9-1-0.9-0.10.30.60.910.90.3

Weather Map and Satellite Images
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wmap_P
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 (22,6,7,8)
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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.