Thursday, March4, 2021
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Marine Weather and Tides
Ashford, 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 2:01 AM PST (10:01 UTC) Moonrise 12:00AMMoonset 9:36AM Illumination 68% Phase: Waning Gibbous; Moon at 20 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- 834 Pm Pst Wed Mar 3 2021
Tonight..Variable wind to 10 kt becoming S 5 to 15 kt after midnight. Wind waves 2 ft or less.
Thu..S wind 10 to 20 kt. Wind waves 1 to 3 ft. A chance of rain in the afternoon.
Thu night..S wind 15 to 25 kt becoming se 10 to 20 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.
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 to 10 kt in the afternoon. Wind waves 1 to 3 ft subsiding to 1 ft or less in the afternoon.
Sat night..S wind to 10 kt becoming 5 to 15 kt after midnight. Wind waves 2 ft or less.
Sun..S wind to 10 kt. Wind waves 1 ft or less.
Mon..Light wind. Wind waves less than 1 ft.
PZZ100 834 Pm Pst Wed Mar 3 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 Thursday through Saturday. Elevated winds Thursday 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 Ashford, WA
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location: 46.81, -122.06     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 040358 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 755 PM PST Wed Mar 3 2021

SYNOPSIS. Dry and warmer conditions expected for most locations again Thursday. A pattern change to more wet and unsettled weather will occur late in the day Thursday and persist through early next as general troughing sets up across the Pacific Northwest.

SHORT TERM /TONIGHT THROUGH SATURDAY/. Both satellite and radar showing clear conditions over much of W WA this evening . the exception being along the coast where some clouds associated with the next incoming system are starting to approach. This system is not making much headway in regards to eastward movement, and as such the generally clear skies will remain in place over the bulk of the CWA tonight before some high clouds creep in during the early morning hours. Clear skies would ordinarily suggest cooler overnight temps, but warmer air in place might help to mitigate that to some degree as overnight lows in most lowland locations will be generally in the upper 30s. Inherited forecast looks on track and as such, no need for an evening update. For further forecast details, please refer to the From Previous Discussion section below. 18

From Previous Discussion . Satellite imagery showing a generally sunny afternoon across much of Western Washington today, with latest observations indicating temperatures in the low to mid 50s across the region. High clouds continue to move across the far northwestern tip of the Olympic Peninsula this afternoon, in association with a warm front barely brushing the area and a low pressure system remaining just to the northwest of Haida Gwaii. Radar does shows some light echoes further offshore over the northern coastal waters, so have kept a mention of POPs for the area.

A transition back to wet and unsettled weather is on tap for Thursday, though much of the interior will remain dry through much of the day. Afternoon highs could climb into the upper 50s to low 60s- have trended with highs in the upper 50s for now, as high clouds moving inland ahead of the next system could act to mitigate temperatures a bit.

An upper level low will then deepen across the northeastern Pacific, tap into a large fetch of Pacific moisture, and gradually make its way inland late Thursday and into Friday. Overall, expect rain associated with a cold front to start to make its way inland along the coast by Thursday afternoon and slowly progress inland late Thursday. The bulk of the precipitation is expected to occur near the coast and along the Olympics, with the latest forecast calling for 1-2 inches of rain for areas along the Pacific, half an inch for areas across the Southwest Interior, and anywhere from a tenth of an inch to half an inch expected for the lowlands east of the Sound.

With snow levels increasing to 3500-4500 feet and increasing southwesterly flow aloft, expect the Olympics to receive a good dose of snow for elevations 3000 feet and above. Highest snowfall rates look to be late Thursday into early Friday, where accumulations of around 8-10 inches will be possible during the time frame. As such, have issued a winter weather advisory for the Olympics through Friday morning.

Given snow levels in the 3500-4500 ft range, expect the overall potential for river flooding across the area to remain low. The exception will be the flood-prone Skokomish, which is forecast to rise just above minor flood stage on Friday. For more details regarding river flooding, see the hydro section below.

Precipitation will continue through Friday as the upper level low offshore ejects a shortwave across the region. Overall, expect precipitation to become more showery in the wake of the frontal passage. With cold 500mb temperatures near -30C and an unstable post frontal environment, could see a few thunderstorms develop along the coast late Friday morning through Friday afternoon. Showers will continue into Saturday, before a brief break in precipitation occurs under shortwave upper level ridging Saturday night.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. From Previous Discussion . Ensembles indicate overall troughing remaining the dominant influence across the Pacific Northwest late this weekend and into early next week, with the next system slated to progress through the region on Sunday. Wet and unsettled conditions look to continue through early next week, however expect overall lowland rain and mountain snow to remain rather light in comparison to more recent systems. 14

AVIATION. Southwest flow aloft and VFR conditions at all TAF sites through the period generally under SCT to FEW CIGS AOA 25K FT. A few areas of low CIGS and fog will be possible tonight, particularly at KOLM and possibly KPWT. Light and variable winds at nearly all TAF sites tonight, becoming southerly and increasing to around 10 kts by Thursday afternoon. Occasional gusts to 20 kts possible at KHQM. Increasing clouds through the day, with -RA spreading from west to east Thursday afternoon and evening.

KSEA . VFR conditions through the TAF period. Light and variable winds overnight becoming southerly at around 10 kts by Thursday afternoon. Increasing clouds throughout the day as approaching system nears the terminal. -RA still looks to hold off beyond the end of the TAF period but once it kicks in brief reductions in vsbys and CIGs will be possible.

Pullin/18

MARINE. Mostly quiet weather will give way to a period of unsettled conditions across all area waters Thursday through Saturday. Increasing winds late tonight into Thursday morning, with gales expected offshore with the approach of the frontal system. Elevated winds will persist across the inland waters through Saturday afternoon, with wind driven waves of 3 to 5 feet at times.

Offshore swells will increase through Friday, peaking at 17 to 20 feet offshore. Swells will decrease Saturday before another swell train arrives on Sunday. Seas will gradually decrease below 10 feet once again early next week.

Pullin/18

HYDROLOGY. From Previous Discussion . An atmospheric river is expected to affect Western Washington Thursday night through Saturday. At this time, several limiting factors will keep the flood threat isolated to the Skokomish River basin during this timeframe. As a result a hydrologic outlook remains in effect for Mason County.

1) Snow levels will only rise to 3500 to 4500 feet across the Olympic Peninsula, limiting rainfall efficiency.

2) Event duration. The AR will remain pointed at the Olympic Peninsula for ~24-36 hours at the most. Rainfall amounts will generally range from 1 to 2 inches across most locations, with higher amounts to 3 inches in the higher elevations of the Olympics.

These factors coupled with a mostly dry week will limit the flooding potential across the region. An additional system will bring additional rainfall to Western Washington Sunday through early next week.

Butwin/Borth

SEW WATCHES/WARNINGS/ADVISORIES. WA . Winter Weather Advisory from 10 AM Thursday to 10 AM PST Friday for Olympics.

PZ . Small Craft Advisory until noon 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.

Gale Warning from noon to 10 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.

Small Craft Advisory from 4 AM Thursday to 4 PM PST Saturday for Grays Harbor Bar.

Small Craft Advisory from 6 AM Thursday to 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 from 6 AM Thursday to 4 PM PST Friday 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 37 mi43 min WSW 2.9 G 4.1
TCNW1 - 9446484 - Tacoma, WA 37 mi49 min 41°F 48°F1012.3 hPa

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pierce County-Thun Field, WA24 mi67 minN 09.00 miLight Drizzle34°F34°F100%1010.8 hPa

Link to 5 minute data for KPLU

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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm43CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmSW5W5W63SW444Calm3CalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm33CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Tacoma, Commencement Bay, Washington
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Tacoma
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Thu -- 02:09 AM PST     4.37 feet Low Tide
Thu -- 06:43 AM PST     Sunrise
Thu -- 08:08 AM PST     12.38 feet High Tide
Thu -- 09:36 AM PST     Moonset
Thu -- 03:06 PM PST     0.24 feet Low Tide
Thu -- 05:59 PM PST     Sunset
Thu -- 09:54 PM PST     10.25 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.55.14.44.86.28.110.111.712.411.910.58.25.5310.20.72.34.46.78.69.910.29.8

Tide / Current Tables for Steilacoom, Washington
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Steilacoom
Click for Map
Thu -- 02:46 AM PST     4.54 feet Low Tide
Thu -- 06:43 AM PST     Sunrise
Thu -- 08:38 AM PST     14.29 feet High Tide
Thu -- 09:37 AM PST     Moonset
Thu -- 03:43 PM PST     0.25 feet Low Tide
Thu -- 06:00 PM PST     Sunset
Thu -- 10:24 PM PST     11.83 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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8.46.44.94.65.67.710.212.51414.213.110.98.152.40.60.31.43.66.28.810.811.711.7

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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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