Tuesday, January21, 2020
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Marine Weather and Tides
Olympia, WA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 7:46AMSunset 4:58PM Tuesday January 21, 2020 12:20 AM PST (08:20 UTC) Moonrise 5:15AMMoonset 2:07PM Illumination 15% Phase: Waning Crescent; Moon at 26 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- 842 Pm Pst Mon Jan 20 2020
.small craft advisory in effect from 1 am pst Tuesday through late Tuesday night...
Tonight..S wind 5 to 15 kt becoming se 15 to 25 kt after midnight. Wind waves 2 ft or less building to 2 to 4 ft after midnight. A chance of rain in the evening then rain after midnight.
Tue..S wind 20 to 30 kt. Wind waves 3 to 5 ft. Showers.
Tue night..S wind 15 to 25 kt. Wind waves 2 to 4 ft. Rain in the evening then rain likely after midnight.
Wed..S wind 15 to 25 kt. Wind waves 2 to 4 ft.
Wed night..SE wind to 10 kt becoming S 5 to 15 kt after midnight. Wind waves 2 ft or less.
Thu..S wind 5 to 15 kt. Wind waves 2 ft or less.
Thu night..S wind to 10 kt. Wind waves 1 ft or less.
Fri..S wind to 10 kt. Wind waves 1 ft or less.
Sat..S wind to 10 kt. Wind waves 1 ft or less.
PZZ100 842 Pm Pst Mon Jan 20 2020
Synopsis for the northern and central washington coastal and inland waters..The next frontal system will move through the area tonight and Tuesday. The weather will stay active Wednesday and Thursday with additional weather systems affecting the area.


7 Day Forecast for Marine Location Near Olympia city, WA
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location: 47.08, -123.01     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 210442 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 842 PM PST Mon Jan 20 2020

SYNOPSIS. A weak front will dissipate over the western portion of the area tonight. Additional systems will move through the region Tuesday through the rest of the week with lowland rain and fluctuating snow levels in the mountains.

SHORT TERM /TONIGHT THROUGH THURSDAY/. A frontal system will move through the area on Tuesday with rain changing to showers. This system will bring snow to the mountains with snow levels 2500-3500 feet. It looks like advisory amounts for the passes and heavy snow for the volcanoes. There will also be locally windy conditions, mainly coast and north interior. An isolated thunderstorm is possible near the coast where it will be a little unstable.

The wet pattern will continue Wednesday and Thursday as an atmospheric river affects the area. A warm front will move over the area on Wednesday, stall Wednesday night, then slowly sag inland as a cold front on Thursday. This combined with high snow levels will bring a threat of river flooding. Please see the hydrology section below for more details. Schneider

LONG TERM /FRIDAY THROUGH MONDAY/. Previous discussion . Periods of heavy rain will continue into Friday, and possibly Saturday, as more wet Pac systems roll through the region. Rivers will continue to run high with flooding still a threat. A break in the pattern Saturday night and Sunday will bring a brief respite. A cooler upper trough will bring more rain and mountain snow early next week. 33

AVIATION. A frontal system will move into the area late tonight then push inland on Tuesday. Southerly flow aloft tonight will become westerly on Tuesday as an upper trough moves over the area. The air mass is moist and stable. It will become slightly unstable near the coast on Tuesday.

Mostly mid and high clouds across the area this evening ahead of a front. There will be some patchy low clouds and fog in a few spots however. Ceilings will lower late tonight as the front arrives with low clouds across the area on Tuesday.

KSEA . Mid and high clouds most of tonight. Low clouds and rain will develop Tuesday morning as a front arrives. Easterly wind 4-8 knots will become southerly 10-15 knots on Tuesday. Schneider

MARINE. A frontal system will bring gales to the Coastal Waters later tonight and Tuesday and perhaps the Central Strait and East Entrance Strait of Juan de Fuca as well. Small craft advisory strength winds are expected all other waters with the front.

The pattern will remain active for the rest of the week as a series of weather systems move through the area. Schneider

HYDROLOGY. A period of warming, rising snow levels, and heavy rain in the mountains will force sharp rises on the rivers flowing off the Olympics and Cascades in western Washington. Snow levels will rise to around 5,000 to 6,000 feet with 3 to 6 inches of rain in the mountains Wednesday through early Friday. Minor flooding is possible on several rivers as a result. Rivers may be flowing high through the weekend before receding.

SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Weather Advisory from 4 AM Tuesday to 4 AM PST Wednesday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties.

Winter Storm Warning from 4 AM Tuesday to 4 AM PST Wednesday for Cascades of Whatcom and Skagit Counties.

PZ . Small Craft Advisory until 10 PM PST this evening for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From Cape Flattery To James Island Out 10 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Gale Warning from 10 PM this evening to 4 PM PST Tuesday for Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-Coastal Waters From Cape Flattery To James Island Out 10 Nm-Coastal Waters From James Island To Point Grenville 10 To 60 Nm-Coastal Waters From James Island To Point Grenville Out 10 Nm-Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Small Craft Advisory until 10 AM PST Wednesday for Grays Harbor Bar.

Gale Warning from 10 PM this evening to 7 PM PST Tuesday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 10 PM this evening to 1 AM PST Wednesday for Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory from 10 PM this evening to 4 PM PST Tuesday for West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 1 AM Tuesday to 4 AM PST Wednesday for Admiralty Inlet-Puget Sound and Hood Canal.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TCMW1 - 9446482 - Tacoma Met, WA 34 mi68 min Calm G 1
TCNW1 - 9446484 - Tacoma, WA 34 mi56 min 43°F 49°F1005.1 hPa
WPOW1 - West Point, WA 50 mi80 min NE 2.9 G 4.1 45°F 1005.2 hPa (-2.6)45°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Olympia, Olympia Airport, WA9 mi26 minN 010.00 miMostly Cloudy42°F39°F92%1004.9 hPa
Shelton, Shelton Sanderson Field, WA13 mi27 minWSW 43.00 miFog/Mist41°F39°F96%1004.8 hPa
Fort Lewis / Gray U. S. Army Airfield, WA23 mi82 minNE 36.00 miFog/Mist39°F0°F%1004.9 hPa

Link to 5 minute data for KOLM

Wind History from OLM (wind in knots)
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Last 24hrCalmCalmCalmCalmSW4W5SW7SW5W3W4CalmCalmCalmE3CalmNE3CalmCalmCalmCalmCalmE4CalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmSW4CalmCalmN4NE6N6N7N3CalmCalmCalmE3CalmCalmCalm
2 days agoW3N3N4CalmS7S13SW14
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SW7S12--S6S5S3S6CalmS5SW4W3

Tide / Current Tables for Rocky Point, Eld Inlet, Washington
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Rocky Point
Click for Map
Tue -- 04:10 AM PST     14.29 feet High Tide
Tue -- 05:15 AM PST     Moonrise
Tue -- 07:49 AM PST     Sunrise
Tue -- 09:08 AM PST     8.47 feet Low Tide
Tue -- 01:53 PM PST     14.71 feet High Tide
Tue -- 02:07 PM PST     Moonset
Tue -- 04:57 PM PST     Sunset
Tue -- 09:41 PM PST     -1.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.7911.713.514.313.912.410.69.18.58.910.412.414.114.714.112.5106.93.50.7-1-1.30

Tide / Current Tables for Eld Inlet Entrance, Washington Current
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Eld Inlet Entrance
Click for Map
Tue -- 03:22 AM PST     -0.00 knots Slack
Tue -- 05:15 AM PST     Moonrise
Tue -- 06:42 AM PST     -0.35 knots Max Ebb
Tue -- 07:49 AM PST     Sunrise
Tue -- 09:06 AM PST     0.00 knots Slack
Tue -- 11:37 AM PST     0.58 knots Max Flood
Tue -- 01:29 PM PST     -0.01 knots Slack
Tue -- 02:06 PM PST     Moonset
Tue -- 04:57 PM PST     Sunset
Tue -- 06:02 PM PST     -0.77 knots Max Ebb
Tue -- 09:31 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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1.210.60.2-0.1-0.2-0.3-0.3-0.2-00.30.50.60.2-0.1-0.4-0.6-0.7-0.8-0.7-0.5-0.20.30.8

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 (3,6,7,8)
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Ground Weather Radar Station Seattle/Tacoma, WA
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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 numerous 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.