Thursday, March4, 2021
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Marine Weather and Tides
SeaTac, WA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:40AMSunset 6:00PM Thursday March 4, 2021 1:13 PM PST (21:13 UTC) Moonrise 12:00AMMoonset 9:35AM Illumination 64% Phase: Waning Gibbous; Moon at 21 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- 345 Am Pst Thu Mar 4 2021
.small craft advisory in effect from 10 am pst this morning through this evening...
Today..S wind 10 to 20 kt rising to 15 to 25 kt in the afternoon. Wind waves 1 to 3 ft. A chance of rain in the afternoon.
Tonight..S wind 10 to 20 kt becoming se 5 to 15 kt after midnight. Wind waves 2 to 4 ft. Rain.
Fri..SE wind 15 to 25 kt becoming S 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft. Rain.
Fri night..S wind 10 to 20 kt rising to 15 to 25 kt after midnight. Wind waves 2 to 4 ft.
Sat..S wind 10 to 20 kt becoming sw 5 to 15 kt in the afternoon. Wind waves 1 ft or less.
Sat night..S wind to 10 kt. Wind waves 1 ft or less.
Sun..S wind to 10 kt becoming light. Wind waves 1 ft or less.
Mon..Light wind. Wind waves less than 1 ft.
PZZ100 345 Am Pst Thu Mar 4 2021
Synopsis for the northern and central washington coastal and inland waters..Mostly quiet weather will give way to a period of unsettled conditions across all area waters today through Saturday. Elevated winds this morning through Saturday afternoon with elevated seas through most of the weekend. A brief break Saturday night before elevated winds and seas return Sunday into early next week.


7 Day Forecast for Marine Location Near SeaTac, WA
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location: 47.42, -122.28     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 041705 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 900 AM PST Thu Mar 4 2021

SYNOPSIS. A slow moving frontal system just off the coast will move slowly inland through Friday. An upper level trough will move through the region Friday night and Saturday morning. Another weather system arrives Sunday. An upper level trough will remain just offshore during the first half of next week.

SHORT TERM /TODAY THROUGH SATURDAY/. Clouds will increase with rain developing on the coast--spreading inland late this afternoon. The front will stall near the coast tonight and the upper level trough will dig further south off the West Coast. A second frontal wave will arrive Friday and the cold front will finally shift through the interior of Western Washington. There's a Winter weather advisory for the Olympics with snow at the higher elevations and with a decent amount of rain in the lower elevations in southerly flow aloft a flood watch for the Skokomish River in Mason county. After the front moves through, the air will destabilize for a chance of a couple of thunderstorms near the coast, and the upper trough will shift ashore on Saturday keeping showers in the forecast. 19

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Extended models and ensemble solutions in good agreement with another front moving through Western Washington Sunday. Snow levels in the Cascades will be down around 2000 feet for snow in all the passes. Good agreement in the extended models continues into the first part of next week with a large vertically stacked low moving south off the west coast Monday through Wednesday. Ensemble solutions have a few members, less than 20 percent, with light precipitation. Model blend gives slight chance pops through the period. With some good consistency in the models at this point going to go dry for the most part Monday through Wednesday and keep the slight chance of showers wording just over the southern portion of the area at times. Highs will continue to be a little below normal, a couple of degrees either side of 50. Felton

AVIATION. Southwesterly flow aloft with an upper level ridge to the east of the area and a frontal system offshore this morning. Breezy conditions expected this afternoon, mainly for terminals along the coast (KHQM) and across the Northern Interior (KPAE,KBLI). Increasing clouds today as the frontal system approaches the coast, with rain likely beginning across Puget Sound between 23-03Z.

KSEA . Southerly winds continuing through the day, generally between 5-10 knots. Increase in cloud coverage expected as the frontal system nears the area. Latest hi-res guidance shows rain likely beginning at the terminal between approximately 23-02z.

Kristell/Borth

MARINE. A vigorous cold front will arrive later today and slowly move through the waters into Friday. Winds across the coastal waters and northern interior waters have already started to increase this morning.

Meanwhile, offshore swells will continue to build this morning and remain elevated, between 13-16 feet, into Friday morning before decreasing Saturday. Another swell train will then arrive in the region on Sunday.

A number of marine headlines are posted for area waters today and into Friday evening, including offshore gale warnings, and Small Craft Advisories for much of the inland waters. Additional marine headlines may be posted Sunday into early next week as the unsettled pattern continues.

Kristell/Borth

HYDROLOGY. Stalling front will keep rain focused in the Olympics in southerly flow aloft (with snow higher elevations). With 2-3" of rain for the Skokomish basin, a flood watch is up for that river. 19

CLIMATE. On this day back in 1955 Seattle experienced its coldest March day on record. With 5 inches of snow on the ground the low was 11 degrees, coldest temperature recorded in March in Seattle. The high was also the coldest on record for March, 29 degrees. Felton

SEW WATCHES/WARNINGS/ADVISORIES. WA . Flood Watch through Friday afternoon for Hood Canal Area-Lower Chehalis Valley Area-Olympics.

Winter Weather Advisory until 10 AM PST Friday for Olympics.

PZ . Gale Watch from late tonight through Friday 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 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.

Small Craft Advisory until 4 PM PST Saturday for Grays Harbor Bar.

Small Craft Advisory until 7 PM PST Friday for Admiralty Inlet- East Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland Waters Including The San Juan Islands.

Small Craft Advisory until 4 PM PST Friday for West Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 4 AM to 10 AM PST Friday for Central U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 8 PM PST this evening 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
TCMW1 - 9446482 - Tacoma Met, WA 12 mi55 min SE 5.1 G 8
TCNW1 - 9446484 - Tacoma, WA 13 mi61 min 51°F 48°F1016.5 hPa
WPOW1 - West Point, WA 19 mi73 min SSE 17 G 19 49°F 1015.1 hPa (+0.0)40°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, WA2 mi20 minSSW 410.00 miOvercast51°F39°F64%1016.6 hPa
Renton Municipal Airport, WA6 mi20 minVar 510.00 miMostly Cloudy55°F38°F53%1016.2 hPa
Boeing Field - King County International Airport, WA8 mi20 minS 710.00 miOvercast50°F38°F63%1016.1 hPa
Tacoma, Tacoma Narrows Airport, WA19 mi20 minN 09.00 miLight Rain47°F39°F74%1016.1 hPa
Tacoma / McChord Air Force Base, WA21 mi75 minESE 610.00 miMostly Cloudy51°F38°F61%1016.1 hPa
Pierce County-Thun Field, WA22 mi18 minN 010.00 miPartly Cloudy52°F39°F62%1015.9 hPa

Link to 5 minute data for KSEA

Wind History from SEA (wind in knots)
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Last 24hrW5SW4W8SW4CalmCalmNW3W3W5CalmS3S3S4SE7S5S4S5SE7SE8S8S9S7SE9S4
1 day agoN4W4CalmCalmNE4SE6W3CalmCalmCalmE3CalmCalmSE4SE4SE6CalmS3S4CalmCalmW4Calm4
2 days agoSW9SW10SW10S6SW8W6W6NW5SW5S4W4SW5NW4CalmCalmCalmNW5CalmCalmN7NW4N5CalmCalm

Tide / Current Tables for Des Moines, Washington
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Des Moines
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Thu -- 02:09 AM PST     4.37 feet Low Tide
Thu -- 06:43 AM PST     Sunrise
Thu -- 08:06 AM PST     12.26 feet High Tide
Thu -- 09:35 AM PST     Moonset
Thu -- 03:06 PM PST     0.24 feet Low Tide
Thu -- 05:59 PM PST     Sunset
Thu -- 09:52 PM PST     10.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.55.14.44.86.18.11011.612.311.810.38.15.42.910.20.72.34.46.68.69.810.19.7

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Thu -- 03:09 AM PST     0.00 knots Slack
Thu -- 05:05 AM PST     0.46 knots Max Flood
Thu -- 06:43 AM PST     Sunrise
Thu -- 08:09 AM PST     -0.00 knots Slack
Thu -- 09:35 AM PST     Moonset
Thu -- 12:03 PM PST     -1.03 knots Max Ebb
Thu -- 04:01 PM PST     0.01 knots Slack
Thu -- 05:59 PM PST     Sunset
Thu -- 06:14 PM PST     0.61 knots Max Flood
Thu -- 10:00 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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-0.7-0.6-0.3-00.30.50.40.30-0.3-0.7-0.9-1-0.9-0.7-0.4-00.40.60.60.40.2-0-0.3

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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