Friday, August23, 2019 L-36.com


Marine Weather and Tides
Duvall, WA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:13AMSunset 8:08PM Friday August 23, 2019 3:46 AM PDT (10:46 UTC) Moonrise 11:03PMMoonset 1:30PM Illumination 46% Phase: Third Quarter Moon; Moon at 23 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- 247 Am Pdt Fri Aug 23 2019
Today..Light wind becoming N to 10 kt in the afternoon. Wind waves 1 ft or less.
Tonight..N wind 5 to 15 kt becoming se after midnight. Wind waves 2 ft or less.
Sat..S wind to 10 kt becoming N 5 to 15 kt in the afternoon. Wind waves 2 ft or less. A slight chance of showers in the afternoon.
Sat night..N wind 5 to 15 kt easing to variable after midnight. Wind waves 2 ft or less.
Sun..Light wind. Wind waves less than 1 ft.
Sun night..N wind to 10 kt. Wind waves 1 ft or less.
Mon..N wind to 10 kt. Wind waves 1 ft or less.
Tue..N wind to 10 kt. Wind waves 1 ft or less.
PZZ100 247 Am Pdt Fri Aug 23 2019
Synopsis for the northern and central washington coastal and inland waters..A weak weather system will brush the north part of the area today. A second weak cold front will dissipate over the coastal waters tonight and Saturday. Otherwise, onshore flow will continue through early next week with high pressure offshore and lower pressure inland. Low level flow will turn offshore next Tuesday as a thermal trough builds north along the west coast.


7 Day Forecast for Marine Location Near Duvall, WA
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location: 47.72, -122     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 231028
afdsew
area forecast discussion
national weather service seattle wa
328 am pdt Fri aug 23 2019

Synopsis A weak upper level trough will move over western
washington today and remain into Saturday. A weak system will move
by to the north today with a second weak system dissipating before
it reaches the area on Saturday. An upper level ridge will build
into the area Sunday through the middle of next week. Low level
offshore flow Tuesday through Thursday will give the area well
above normal high temperatures.

Short term today through Sunday Satellite imagery shows weak
weather system approaching the area from the northwest early this
morning. Clouds out ahead of the feature have reached the central
portion of vancouver island as of 3 am 10z. Mostly clear skies
over western washington with some patchy fog developing between
puyallup and olympia. Temperatures at 3 am were mostly in the
50s.

System offshore will continue to weaken and lift a little north
today. For most of the area just an increase in cloud cover this
morning ( photographers alert, could be a colorful sunrise ) with
the mostly cloudy skies continuing into the afternoon hours. There
is a slight chance of showers near the canadian border later
today. Highs with the cloud cover will be in the mid 60s to mid
70s.

A little break between systems tonight with another weak system
dissipating before it moves into the area on Saturday. This
system will have a little more southerly track to it with the
remnants moving into western washington during the day on
Saturday. Will keep a slight chance of showers west of puget sound
in the forecast. Lows tonight will be in the 50s. Highs on
Saturday with the cloud cover will continue to be a little below
normal, in the mid 60s to mid 70s.

Low level onshore flow continuing Saturday night into Sunday with
northwesterly flow aloft. Upper level ridge beginning to build
offshore Sunday afternoon. Even with more sunshine on Sunday the
low level onshore flow will keep highs in the upper 60s to upper
70s. Lows Saturday night in the 50s.

Long term Monday through Thursday Extended models remain in
good agreement with an upper level ridge building over the area
Monday and Tuesday and remaining over the area Wednesday. The
ecmwf weakens the ridge on Thursday while the GFS and the
ensembles keep the ridge solidly over the area. Low level flow
turning offshore on Tuesday and remaining offshore through
Thursday. Model 850 mb temperatures in the plus 16 to plus 20c
range for Wednesday and Thursday. Plus 20c at 850 with low level
offshore flow brings up the possibility of lower 90s but with the
models trending a little cooler with the 850 mb temperatures will
keep the high end of the MAX temps for now in the upper 80s
Wednesday and Thursday. Felton

Aviation A broad upper trough will settle over the area today
and tonight. A weak disturbance in the westerly flow aloft will
brush the northern part of the area today. A second weak frontal
system will dissipate off the coast tonight. At the surface,
onshore will continue with high pressure offshore and lower
pressure inland. The air mass is mostly dry and stable.

There will be areas of low clouds this morning but nothing too
widespread under weak low level onshore flow. The low clouds that
are around this morning should burn off my afternoon. Otherwise,
there will be high clouds today and maybe some mid clouds at
times over the north part of the area as a weak weather system
brushes the area. Low and mid clouds should increase again west of
puget sound - mostly near the coast - as a second weak front
approaches from the west and dissipates offshore.

Ksea... There is an area of 3000-4000 foot ceilings east of the
terminal that will be close at times but is not expected to
produce a ceiling at the TAF site. There is also a small chance
some stratus could form in place this morning under weak onshore
flow but the most likely scenario is just high clouds today. Mid
clouds will likely increase tonight as a weak front dissipates to
the west. Light wind will become northerly 4-8 knots this
afternoon. Schneider

Marine A weak weather system will brush the north part
of the area today. A second weak cold front will dissipate over
the coastal waters tonight and Saturday.

Otherwise, onshore flow will continue through early next week
with high pressure offshore and lower pressure inland. Small craft
advisory strength west winds are likely in the central and
eastern strait of juan de fuca each night for the next few days.

Winds could rise to gale force in the strait Saturday evening but
confidence is not high enough for a watch yet.

Low level flow will turn offshore next Tuesday as a thermal
trough builds north along the west coast. Schneider

Hydrology The daily hydrology discussion has ended until the
start of the next rainy season; it will only be updated as needed
until then.

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 4 pm this afternoon to 3 am pdt
Saturday 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
46120 21 mi33 min N 1.9 58°F 1015 hPa55°F
WPOW1 - West Point, WA 23 mi47 min NE 5.1 G 5.1 57°F 1016 hPa (-0.9)54°F
TCMW1 - 9446482 - Tacoma Met, WA 38 mi53 min ESE 4.1 G 5.1
TCNW1 - 9446484 - Tacoma, WA 38 mi53 min 57°F 56°F1016.2 hPa
46121 49 mi28 min 57°F 1015.8 hPa56°F
PTWW1 - 9444900 - Port Townsend, WA 49 mi53 min N 2.9 G 4.1 55°F 54°F1016.7 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA19 mi1.9 hrsESE 410.00 miFair57°F55°F93%1016.7 hPa
Everett Snohomish County, WA20 mi1.9 hrsN 310.00 miFair56°F52°F87%1016.6 hPa
Boeing Field - King County International Airport, WA21 mi1.9 hrsSSE 410.00 miFair58°F53°F84%1016.3 hPa

Link to 5 minute data for KRNT

Wind History from RNT (wind in knots)
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Last 24hrS3CalmS6S4--S4S4CalmCalmNW3Calm3Calm--3------S3--SE3--SE4SE4
1 day agoSE3S4----CalmS3S3Calm3--SW73SW4CalmCalmCalm--NW7N5--N5N4--SW3
2 days agoCalmCalmCalmCalmCalmS3SE4S6S4SW8----S8SW6SW5----------------S4

Tide / Current Tables for Seattle, Washington
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Seattle
Click for Map
Fri -- 05:13 AM PDT     1.79 feet Low Tide
Fri -- 06:15 AM PDT     Sunrise
Fri -- 07:58 AM PDT     Last Quarter
Fri -- 12:01 PM PDT     8.48 feet High Tide
Fri -- 02:31 PM PDT     Moonset
Fri -- 05:04 PM PDT     5.98 feet Low Tide
Fri -- 08:07 PM PDT     Sunset
Fri -- 10:48 PM PDT     10.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.97.45.63.82.51.8234.45.97.38.28.58.37.776.366.2789.19.810

Tide / Current Tables for President Point, 1.5 mile E of, Washington Current
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President Point
Click for MapFlood direction 203 true
Ebb direction 24 true

Fri -- 01:34 AM PDT     -0.51 knots Max Ebb
Fri -- 06:15 AM PDT     Sunrise
Fri -- 06:25 AM PDT     0.00 knots Slack
Fri -- 07:58 AM PDT     Last Quarter
Fri -- 08:24 AM PDT     0.23 knots Max Flood
Fri -- 11:55 AM PDT     -0.00 knots Slack
Fri -- 02:20 PM PDT     -0.25 knots Max Ebb
Fri -- 02:31 PM PDT     Moonset
Fri -- 06:24 PM PDT     0.00 knots Slack
Fri -- 07:53 PM PDT     0.12 knots Max Flood
Fri -- 08:07 PM PDT     Sunset
Fri -- 10:29 PM PDT     -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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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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (6,6,7,8)
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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.