Sunday, November18, 2018 L-36.com


Marine Weather and Tides
Des Moines, 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 7:18AMSunset 4:31PM Sunday November 18, 2018 8:04 AM PST (16:04 UTC) Moonrise 2:51PMMoonset 1:52AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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- 248 Am Pst Sun Nov 18 2018
Today..N wind 10 kt or less. Wind waves 1 ft or less. Areas of morning fog.
Tonight..Variable wind 10 kt or less. Wind waves 1 ft or less. Patchy fog.
Mon..Variable wind 10 kt or less. Wind waves 1 ft or less. Areas of morning fog.
Mon night..Light wind. Wind waves less than 1 ft.
Tue and Tue night..S wind 10 kt or less. Wind waves 1 ft or less.
Wed..SE wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..S wind 15 to 25 kt. Wind waves 1 to 4 ft.
PZZ100 248 Am Pst Sun Nov 18 2018
Synopsis for the northern and central washington coastal and inland waters..High pres over idaho with lower pres over the coastal waters will result in easterly or offshore flow through Tuesday. A weakening frontal system will bring the possibility of gale force winds to parts of the coastal waters on Wednesday. The cold front will probably dissipate as it moves onshore late in the day. A stronger system is expected to impact the area on Thursday.


7 Day Forecast for Marine Location Near Des Moines, WA
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location: 47.39, -122.35     debug


Area Discussion for - Seattle, WA
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Fxus66 ksew 181100
afdsew
area forecast discussion
national weather service seattle wa
300 am pst Sun nov 18 2018

Synopsis High pressure aloft will maintain cool but dry weather
through Tuesday. Areas of night and morning fog or freezing fog will
give way to afternoon sunshine. A series of weather systems will
bring wet weather beginning about Wednesday and continuing through
the holiday weekend.

Short term A sharp upper ridge will slowly move across washington
today through Tuesday. Skies will be clear today and Monday, with
areas of night and morning fog and freezing fog. Temperatures at 2
am were mostly in the 30s, with some lower 40s and upper 20s. Under
clear skies temperatures are several degrees lower than last night
at this time. Highs today will be in the lower 50s, and on Monday
they will be a few degrees warmer. Overnight lows will be around
freezing tonight and Monday night. The mountains will remain clear,
with the freezing level around 10,000 feet.

By Tuesday the upper ridge axis will be over idaho, and southerly
flow aloft will develop over washington as a front moves toward the
state. Clouds will increase during the day. Rain will probably reach
the coast Tuesday evening, then spread to the olympic peninsula
later Tuesday night. Highs Tuesday will be in the mid 50s. Lows
Tuesday night will be above freezing, mostly 35-40. Burke

Long term Wednesday through Saturday will be a wet period. Rain
will spread inland Wednesday, with likely or better pops everywhere
by afternoon. A front will move through Wednesday night, and another
one will arrive Thursday afternoon. An upper trough will keep at
least showers going on Friday. Models differ about Saturday, with
the euro fairly dry but the GFS distinctly wet, so have kept likely
pops Saturday.

Qpf is not especially heavy with these fast moving systems, with
perhaps an inch of water per day in the mountains and half that in
the lowlands. The wettest period currently looks to be 18z Thursday
to 18z Friday. The snow level will fall to 4000 feet on Wednesday,
and even lower by the weekend. This means there will be snow at
times at the ski areas and in the passes. Burke

Aviation Light northwest flow aloft continues over western
washington this morning as an upper ridge axis remains over the
coastal waters. The air mass is dry and stable with low level
offshore flow. Except for patchy low clouds on the north side of the
olympics and a little river valley fog this morning,VFR conditions
are expected today. The upper ridge axis will shift over the region
tonight with the flow aloft becoming southwesterly on Monday. A
surface ridge east of the cascades will weaken today and tonight.

This will weaken the offshore flow somewhat and allow stronger
nighttime inversions to develop. As a result, more widespread
coverage of fog is expected on Monday morning... Especially over the
southwest interior and south sound.

Ksea...VFR today. Surface winds n-ne 5 to 10 knots. May see some fog
develop in the vicinity of the terminal after 10z Monday morning,
but confidence in details not high at this time. 27

Marine High pressure over idaho with lower pressure over the
coastal waters will result in easterly (offshore) flow through
Tuesday. A weakening frontal system will bring the possibility of
gale force winds to parts of the coastal waters (beyond 10 nm) on
Wednesday. The cold front will probably dissipate as it moves
onshore late Wednesday. A stronger system is expected to impact the
area on Thursday for the possibility of widespread gale force winds.

Hydrology River flooding is unlikely over the next seven days.

Sew watches warnings advisories
Wa... None.

Pz... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCNW1 - 9446484 - Tacoma, WA 9 mi34 min 32°F 53°F1023.5 hPa
TCMW1 - 9446482 - Tacoma Met, WA 9 mi34 min SE 4.1 G 5.1
EBSW1 - 9447130 - Seattle, WA 15 mi34 min S 1.9 G 2.9 41°F 53°F1023.1 hPa
WPOW1 - West Point, WA 19 mi64 min NNE 13 G 14 43°F 1023.5 hPa (+0.0)37°F
46121 22 mi27 min 43°F 1023.2 hPa41°F
46120 26 mi27 min NE 5.8 42°F 1022.6 hPa36°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, WA4 mi71 minNNE 910.00 miA Few Clouds38°F32°F79%1023.5 hPa
Boeing Field - King County International Airport, WA10 mi71 minN 010.00 miFair34°F30°F89%1023.3 hPa
Renton Municipal Airport, WA10 mi71 minN 010.00 miFair33°F28°F85%1023.7 hPa
Tacoma, Tacoma Narrows Airport, WA15 mi71 minN 510.00 miFair39°F37°F93%1022.9 hPa
Tacoma / McChord Air Force Base, WA17 mi66 minS 310.00 miFair26°F26°F100%1023.3 hPa
Pierce County-Thun Field, WA20 mi69 minN 010.00 miLight Drizzle28°F28°F100%1022.3 hPa
Bremerton, Bremerton National Airport, WA23 mi68 minNNE 910.00 miFair40°F34°F79%1024.6 hPa
Fort Lewis / Gray U. S. Army Airfield, WA24 mi66 minSE 45.00 miFog/Mist26°F25°F100%1023 hPa

Wind History from SEA (wind in knots)
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Last 24hrN12N9N12N8N11N13N12N11NE14N11N17N13N13NE11N12N8N9NE8N7N9NE11NE85N9
1 day agoN6N7N7N11N12N11N10N11N11N10N11N10N12N14N12N14N9N9NE10NE10N11NE17N11N12
2 days agoS3S4S5SW76SW7W4SW8S4S6S7S12S9S12
G19
S11S7S11S6SE8S6S4CalmW3NW5

Tide / Current Tables for Des Moines, Washington
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Des Moines
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Sun -- 01:12 AM PST     8.11 feet High Tide
Sun -- 01:51 AM PST     Moonset
Sun -- 06:52 AM PST     3.87 feet Low Tide
Sun -- 07:18 AM PST     Sunrise
Sun -- 01:28 PM PST     11.52 feet High Tide
Sun -- 02:50 PM PST     Moonrise
Sun -- 04:30 PM PST     Sunset
Sun -- 08:17 PM PST     3.05 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.78.187.36.35.14.23.94.45.67.29.110.611.411.410.69.27.25.33.83.13.34.25.6

Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Sun -- 01:33 AM PST     -1.08 knots Max Ebb
Sun -- 01:52 AM PST     Moonset
Sun -- 04:43 AM PST     0.04 knots Slack
Sun -- 07:18 AM PST     1.50 knots Max Flood
Sun -- 07:19 AM PST     Sunrise
Sun -- 11:14 AM PST     -0.06 knots Slack
Sun -- 02:07 PM PST     -1.33 knots Max Ebb
Sun -- 02:51 PM PST     Moonrise
Sun -- 04:31 PM PST     Sunset
Sun -- 05:44 PM PST     0.00 knots Slack
Sun -- 08:02 PM PST     1.50 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.8-1-1.1-0.9-0.70.51.21.51.51.310.4-0.9-1.2-1.3-1.3-1.1-0.80.51.31.51.41.20.9

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (11,2,3,4)
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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.