Wednesday, January22, 2020
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Marine Weather and Tides
Navy Yard City, 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 4:57PM Wednesday January 22, 2020 6:59 AM PST (14:59 UTC) Moonrise 6:18AMMoonset 2:53PM Illumination 7% Phase: Waning Crescent; Moon at 27 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- 241 Am Pst Wed Jan 22 2020
.small craft advisory in effect until 10 am pst this morning...
Today..S wind 15 to 25 kt becoming se 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft. Rain.
Tonight..S wind 10 to 20 kt rising to 15 to 25 kt after midnight. Wind waves 2 to 4 ft. Rain.
Thu..S wind 15 to 25 kt rising to 20 to 30 kt in the afternoon. Wind waves 3 to 5 ft. Rain.
Thu night..S wind 10 to 20 kt. Wind waves 1 to 3 ft.
Fri..S wind 15 to 25 kt easing to 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft.
Fri night..S wind 5 to 15 kt becoming se to 10 kt after midnight. Wind waves 2 ft or less.
Sat..SE wind 5 to 15 kt becoming S to 10 kt. Wind waves 2 ft or less.
Sun..S wind to 10 kt. Wind waves 1 ft or less.
PZZ100 241 Am Pst Wed Jan 22 2020
Synopsis for the northern and central washington coastal and inland waters..A warm front will lift north across the area on today, then gradually shift inland Thursday and Thursday night. Active weather will continue through the remainder of the week as additional weather systems moves across the area.


7 Day Forecast for Marine Location Near Navy Yard City CDP, WA
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location: 47.55, -122.65     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 221008 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 208 AM PST Wed Jan 22 2020

SYNOPSIS. Wet weather for the rest of the week into the weekend as a series of systems moves through the area. Snow levels near passes through today will rise steadily later Wednesday into Thursday. Periods of heavy rain will lead to rising rivers and the potential for river flooding later this week.

SHORT TERM /TODAY THROUGH FRIDAY/. Showers are becoming more scattered early this morning in wake of departing cold front. Snow levels have lowered to around 2500 feet with heavy snow falling yesterday evening into early this morning. Any sort of break in between now and warm front arrival will be short lived as precipitation shield already pushing north on Portland's radar. Rain, moderate to heavy at times, will reach the coast near daybreak and push NE through the rest of the area during the morning to early afternoon. This feature will hang up over the area into Thursday before cold front pushes through later Thursday into Thursday night. Snow levels will rise today from below pass levels to 5000-7000 feet by tonight. Until snow levels rise above passes, as cold air remains trapped in easterly flow, could see decent amount of additional snowfall today, especially for Stevens Pass (and Paradise and Mt Baker). Have opted to extend current winter headlines through 4 PM today when trends can be monitored closely. Those with travel plans over the Cascades should expect continued hazardous winter driving conditions until the changeover to rain.

As snow levels rise and heavy rain falls into Thursday, flooding concerns will increase across the area. Especially heavy amounts will fall on the favored upslode regions of the Olympics and across the higher elevations of the Cascades. Flood Watch remains in effect for majority of the area. See hydrology section below for details.

In addition, winds will increase late tonight into Thursday with gusts of 25 to 40 mph. Strongest winds expected along the coast and the interior north of Everett.

Precipitation becomes more showery on Friday as upper level trough swings through the area. Rain won't be as heavy as today or Thursday but will be enough across higher terrain to continue flooding concerns. Snow levels will drop from around 5000 feet during the day to around 4000 feet by Friday night so Stevens Pass may begin to see a bit of snow again.

CEO

LONG TERM /SATURDAY THROUGH TUESDAY/. Next system quickly brings another round of precipitation up from the SW for Saturday. Snow levels will be high enough for flooding concerns to remain across much of the area with mainly rain for the passes. Active pattern continues past Saturday with additional systems though the devil will be in the details. Deterministic model solutions still remain fairly chaotic with differences in timing and strength of each system but ensemble clusters generally show large scale troughing centered somewhere across the Pacific and ridging over the desert SW. This would leave local area sandwiched in between with relatively mild, moist air funneling into the area and colder air trapped across Alaska and BC. For now current forecast lends itself toward blended approach and has snow levels near or slightly above pass levels. Will continue to refine over next several days as this will certainly have implications on river levels.

CEO

AVIATION. Northwest flow aloft as an upper level trough moves through this morning will transition more westerly today. A warm front will lift north across the area today. The air mass and moist and stable. VFR cigs early this morning with MVFR in spots across the central and south Sound. Most sites will be MVFR by this morning (12z-15z) with the warm front, with MVFR by this afternoon for northern Sound. IFR will be possible as well this afternoon. Rain will spread over the area with the front this morning. Steady rain at times into this afternoon. Southerly sustained winds 10-15 knots this morning will transition southeast 8-14 knots this afternoon. JD

KSEA . VFR cigs into this morning with MVFR by 14-16z as a warm front moves through. Widespread rain this morning (after 15z) through this afternoon. IFR possible later today. Southerly winds 10- 15 knots with gusts to 22 knots this morning, southeast winds this afternoon from 5-12 knots. JD

MARINE. A warm front will lift north across the area today and shift inland Thursday into Thursday night. Small Craft Advisory level winds for most waters into Thursday. Active weather through this week for additional headlines as multiple systems move through the area.

Swells 14 to 17 foot range this morning will decrease to 10-12 feet this afternoon and through much of the week. Small Craft Advisory for rough bar conditions at Grays Harbor for much of the week with the magnitude of the swells. JD

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 and increase the risk for landslides across the area. Snow levels will rise to around 5,000 to 7,000 feet with 3 to 9 inches of rain in the mountains today through Saturday. Minor flooding is possible on several rivers as a result. The Skokomish River, which may reach moderate flood stage later today, will likely remain in flood into the weekend. The remainder of rivers may be flowing high through the rest of the weekend. Another period of warm and wet weather may renew the river flooding threat early next week.

SEW WATCHES/WARNINGS/ADVISORIES. WA . Flood Watch from Thursday afternoon through Friday afternoon for Bellevue and Vicinity-Cascades of Pierce and Lewis Counties- Cascades of Snohomish and King Counties-Cascades of Whatcom and Skagit Counties-East Puget Sound Lowlands-Everett and Vicinity-Seattle and Vicinity-Southwest Interior-Tacoma Area-Western Skagit County-Western Whatcom County.

Winter Weather Advisory until 10 AM PST this morning for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and King Counties.

Winter Storm Warning until 4 AM PST early this morning for Cascades of Whatcom and Skagit Counties.

Flood Watch from this evening through late Thursday night for Admiralty Inlet Area-Central Coast-Eastern Strait of Juan de Fuca-North Coast-Western Strait of Juan De Fuca.

Flood Watch through late Thursday night for Hood Canal Area- Lower Chehalis Valley Area-Olympics.

Winter Weather Advisory until 4 AM PST early this morning for Olympics.

PZ . Small Craft Advisory until 4 PM PST Thursday 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-Grays Harbor Bar.

Small Craft Advisory from 10 AM this morning to 10 AM PST Thursday for East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 10 AM PST Thursday for Admiralty Inlet-Northern Inland Waters Including The San Juan Islands- West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 10 AM this morning to 10 PM PST this evening for Central U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 10 AM PST this morning for Puget Sound and Hood Canal.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
WPOW1 - West Point, WA 14 mi59 min S 21 G 22 46°F 1016.2 hPa (+0.7)44°F
TCNW1 - 9446484 - Tacoma, WA 23 mi65 min 44°F 49°F1016.9 hPa
TCMW1 - 9446482 - Tacoma Met, WA 23 mi59 min SSE 2.9 G 4.1
PTWW1 - 9444900 - Port Townsend, WA 39 mi65 min ESE 2.9 G 6 45°F 46°F1015.7 hPa

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bremerton, Bremerton National Airport, WA8 mi63 minSSW 610.00 miLight Rain42°F41°F96%1016.7 hPa
Boeing Field - King County International Airport, WA19 mi66 minS 1010.00 miOvercast46°F39°F79%1016.5 hPa
Seattle, Seattle-Tacoma International Airport, WA20 mi66 minS 109.00 miLight Rain44°F41°F89%1017.1 hPa
Tacoma, Tacoma Narrows Airport, WA20 mi66 minS 610.00 miOvercast43°F39°F89%1016.4 hPa
Renton Municipal Airport, WA23 mi66 minS 810.00 miOvercast45°F37°F77%1017.1 hPa

Link to 5 minute data for KPWT

Wind History from PWT (wind in knots)
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1 day ago3SE4CalmCalmCalmCalmCalmCalmCalmCalmSW3CalmCalmSW4Calm3CalmCalmSW4CalmCalmSW3S7S11
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW3SW3

Tide / Current Tables for Bremerton, Washington
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Bremerton
Click for Map
Wed -- 04:33 AM PST     12.12 feet High Tide
Wed -- 06:18 AM PST     Moonrise
Wed -- 07:48 AM PST     Sunrise
Wed -- 09:32 AM PST     7.75 feet Low Tide
Wed -- 02:12 PM PST     11.39 feet High Tide
Wed -- 02:52 PM PST     Moonset
Wed -- 04:55 PM PST     Sunset
Wed -- 09:42 PM PST     -1.55 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.86.79.211121211.29.98.67.97.88.59.610.811.411.1108.25.62.80.3-1.2-1.5-0.5

Tide / Current Tables for Port Washington Narrows, North Entrance of, Washington Current
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Port Washington Narrows
Click for Map
Wed -- 01:12 AM PST     3.77 knots Max Flood
Wed -- 05:33 AM PST     -0.00 knots Slack
Wed -- 06:18 AM PST     Moonrise
Wed -- 07:48 AM PST     Sunrise
Wed -- 08:30 AM PST     -1.40 knots Max Ebb
Wed -- 10:13 AM PST     0.00 knots Slack
Wed -- 12:42 PM PST     0.88 knots Max Flood
Wed -- 02:52 PM PST     Moonset
Wed -- 03:09 PM PST     -0.00 knots Slack
Wed -- 04:55 PM PST     Sunset
Wed -- 07:53 PM PST     -2.94 knots Max Ebb
Wed -- 10:01 PM PST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.43.83.62.91.90.7-0.4-1-1.4-1.2-0.20.40.80.90.60.1-0.6-1.4-2.2-2.8-2.9-2-0.11.6

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (9,2,3,4)
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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.