Sunday, December15, 2019
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Marine Weather and Tides
Des Moines, WA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:48AMSunset 4:20PM Sunday December 15, 2019 4:28 PM PST (00:28 UTC) Moonrise 8:12PMMoonset 10:56AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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- 209 Pm Pst Sun Dec 15 2019
Tonight..S wind 5 to 15 kt. Wind waves 2 ft or less. Scattered showers in the evening. Patchy fog after midnight.
Mon..S wind 10 to 20 kt. Wind waves 1 to 3 ft. A slight chance of rain.
Mon night..S wind 5 to 15 kt. Wind waves 2 ft or less. A slight chance of rain.
Tue..S wind 5 to 15 kt. Wind waves 2 ft or less.
Tue night..SE wind 5 to 15 kt becoming S to 10 kt after midnight. Wind waves 2 ft or less.
Wed..S wind to 10 kt becoming 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Wed night..S wind 5 to 15 kt. Wind waves 2 ft or less.
Thu..S wind to 10 kt. Wind waves 1 ft or less.
Fri..S wind to 10 kt. Wind waves 1 ft or less.
PZZ100 209 Pm Pst Sun Dec 15 2019
Synopsis for the northern and central washington coastal and inland waters..A warm front will brush the area on Monday. A series of frontal systems will move through the area over the second half of the week.


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 152208 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 208 PM PST Sun Dec 15 2019

SYNOPSIS. Weak high pressure aloft will build over the area Monday and Tuesday. A warm front will brush western and northern portions of the area Monday with some light rain. A broad upper level trough will develop over the northeast Pacific by midweek with a series of potent systems reaching the area into next weekend.

SHORT TERM /TONIGHT THROUGH WEDNESDAY/. Scattered showers will gradually dissipate over the area this evening as weak upper level ridging starts to build into the area. Still a lot of low level moisture continues to linger around the region. With light surface winds, patchy fog is likely to form in the more fog prone valleys overnight. Higher level clouds associated with a weak warm front offshore are already close to the coast and will spread into the region later tonight. Some light rain associated with the warm front is expected to reach coastal areas and perhaps the north interior Monday. The remainder of the area should remain generally dry Monday and Tuesday. The air mass dries out somewhat on Tuesday as cross-Cascade easterly flow picks up. This should help limit fog coverage and give some areas at least some partial sunshine. A broad upper trough will deepen over the northeast Pacific Tuesday night and Wednesday with the first of a series of systems spreading widespread rain and mountain snow across the area on Wednesday.

LONG TERM /THURSDAY THROUGH SUNDAY/. The extended forecast period continues to look like an active string of weather for the region. Deterministic model runs funnel a fairly significant stream of moisture into the region. Snow levels look to remain relatively low through much of period and this translates to some significant snowfall in the mountains in the run-up to the Christmas holiday period. 7 day precipitation anomalies of both the GFS and Euro show some positive values of 1 to 3 inches for the region. This is leaning toward a decidedly wetter period from what we've seen recently. 27

AVIATION. A weak upper trough will be replaced by an upper ridge through Monday. NW flow aloft. Isolated showers should come to an end this evening. There will again be patches of fog and low clouds tonight. A warm front will clip the area on Monday for some areas of light rain on the coast in the morning.

KSEA . Skies have not cleared much today around Seattle so the moist and stabilizing air mass will probably lead to some low clouds tonight. Mid and high clouds from a warm front brushing the area later tonight will help to keep radiational cooling from letting much fog set up.

MARINE. A warm front will clip the area on Monday. After the warm front brushes by gradients will become more easterly on Tuesday. Two or three frontal systems will affect the area Wed-Sat.

HYDROLOGY. There are no flooding concerns through the first half of this week. The latter part of this week will be wet, but snow levels will be relatively low. There will be some rises on the rivers. The Skokomish in particular will bear some watching.

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory from 7 PM this evening to 4 PM PST Tuesday 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 until 5 AM PST Monday for Grays Harbor Bar.

Small Craft Advisory from 1 AM Monday to 4 PM PST Tuesday 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-East Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory from 1 AM to 4 PM PST Monday for West Entrance U.S. Waters Strait Of Juan De Fuca.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 9 mi64 min NNW 2.9 G 2.9
TCNW1 - 9446484 - Tacoma, WA 9 mi64 min 43°F 51°F1024.9 hPa
WPOW1 - West Point, WA 19 mi88 min Calm G 0 42°F 1024.4 hPa (+1.0)39°F
46121 22 mi41 min 1.9 40°F 1024.8 hPa38°F
46120 26 mi39 min 43°F 1023.9 hPa37°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 mi35 minN 010.00 miPartly Cloudy42°F34°F73%1025.3 hPa
Boeing Field - King County International Airport, WA10 mi35 minN 010.00 miPartly Cloudy42°F35°F76%1024.7 hPa
Renton Municipal Airport, WA10 mi35 minN 010.00 miFair41°F35°F79%1025.2 hPa
Tacoma, Tacoma Narrows Airport, WA15 mi35 minN 010.00 miMostly Cloudy41°F36°F82%1024.7 hPa
Tacoma / McChord Air Force Base, WA17 mi90 minS 710.00 miOvercast43°F43°F100%1024.6 hPa
Pierce County-Thun Field, WA20 mi53 minSSW 310.00 miOvercast43°F39°F87%1024.4 hPa
Bremerton, Bremerton National Airport, WA23 mi92 minS 410.00 miOvercast40°F39°F97%1026 hPa
Fort Lewis / Gray U. S. Army Airfield, WA24 mi90 minSSE 810.00 miOvercast44°F43°F100%1024.3 hPa

Link to 5 minute data for KSEA

Wind History from SEA (wind in knots)
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Last 24hrCalmCalmE3NE4E4NE3S3SE4S3S3E7CalmSE3SE4S5S4CalmS6S6S5S6S5SW7Calm
1 day agoSW4CalmW3SW3W5SW4W4CalmSW4S3CalmCalmS5S5S6S7S6S7SE7SE7S6S4SE5Calm
2 days agoS15
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Tide / Current Tables for Des Moines, Washington
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Des Moines
Click for Map
Sun -- 12:29 AM PST     -2.11 feet Low Tide
Sun -- 07:49 AM PST     Sunrise
Sun -- 07:56 AM PST     13.17 feet High Tide
Sun -- 10:56 AM PST     Moonset
Sun -- 01:29 PM PST     7.36 feet Low Tide
Sun -- 04:18 PM PST     Sunset
Sun -- 05:55 PM PST     10.57 feet High Tide
Sun -- 08:11 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.9-1.9-0.42.25.48.611.112.713.212.711.49.98.47.57.58.29.310.210.610.18.66.53.91.4

Tide / Current Tables for Skagit Bay, 1 mile S of Goat Island, Washington Current
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Skagit Bay
Click for Map
Sun -- 12:53 AM PST     2.00 knots Max Flood
Sun -- 04:58 AM PST     -0.06 knots Slack
Sun -- 07:47 AM PST     -1.36 knots Max Ebb
Sun -- 07:50 AM PST     Sunrise
Sun -- 10:56 AM PST     Moonset
Sun -- 11:03 AM PST     0.00 knots Slack
Sun -- 01:14 PM PST     1.24 knots Max Flood
Sun -- 03:58 PM PST     -0.00 knots Slack
Sun -- 04:19 PM PST     Sunset
Sun -- 07:37 PM PST     -1.39 knots Max Ebb
Sun -- 08:12 PM PST     Moonrise
Sun -- 10:12 PM PST     0.06 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.921.91.51-0.1-1-1.3-1.4-1.2-0.9-0.20.91.21.20.8-0.1-0.9-1.2-1.4-1.4-1.1-0.51

Weather Map
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wmap_P
GEOS 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 (19,4,5,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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weather_mapweather_map weather_map

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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.