Saturday, August8, 2020
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Marine Weather and Tides
DuPont, 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 5:57AMSunset 8:33PM Saturday August 8, 2020 2:46 AM PDT (09:46 UTC) Moonrise 10:06PMMoonset 10:05AM Illumination 80% 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- 238 Am Pdt Sat Aug 8 2020
Today..N wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less. A slight chance of showers.
Tonight..N wind 5 to 15 kt becoming ne after midnight. Wind waves 2 ft or less.
Sun..N wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Sun night..N wind to 10 kt becoming ne after midnight. Wind waves 1 ft or less.
Mon..Light wind becoming N 5 to 15 kt in the afternoon. Wind waves less than 1 ft becoming 2 ft or less in the afternoon.
Mon night..N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Tue..Light wind becoming variable to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Wed..Light wind becoming nw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 238 Am Pdt Sat Aug 8 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow is expected through the period with strong nocturnal pushes down the strait of juan de fuca through the weekend. North to northwesterly flow over the coastal waters continues through next week with stronger high pressure over the northern pacific.


7 Day Forecast for Marine Location Near DuPont, WA
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location: 47.12, -122.67     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 080935 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 235 AM PDT Sat Aug 8 2020

SYNOPSIS. Following a damp and cloudy start this morning, a dry and warming trend will commence through Monday across Western Washington. Another weak system will bring cooling temperatures and showers Tuesday and Wednesday followed by a return to seasonal weather during the latter part of the week.

SHORT TERM /TODAY THROUGH MONDAY/. Post-frontal showers continue to linger across Western Washington at this hour with some pockets of fog being reported in various locations in the Olympic Peninsula, San Juan Islands and into the northern Sound/interior at this hour. Hi-res guidance has showers lingering through much of the morning hours, generally tapering off from west to east. A weak convergence zone is expected across the Puget Sound Region later this morning, ushering in a cool and drizzly start to the weekend. Conditions are expected to clear this afternoon, with partly sunny skies prevailing later this afternoon. Lingering cloud cover will keep temperatures below average today for highs by ~5 or so degrees.

Sunday and Monday will see drier conditions and a warming trend as high pressure noses into the region. Afternoon highs on Sunday will return to normal for early-mid August with low to mid 80s on tap for Monday. This warm up will be short lived, as a an upper level shortwave trough will begin to break down the mid-level ridge axis Monday afternoon and evening. This will yield increasing clouds once again, foreshadowing the change to come on Tuesday.

Pullin

LONG TERM /TUESDAY THROUGH FRIDAY/. An upper trough will move over the area on Tuesday, bringing a few showers and cooling highs to near normal. Another upper trough will shift over the area on Wednesday for more of the same - a few showers and seasonable temperatures. Wednesday is looking like the coolest day of the week by a couple degrees with highs slightly below normal. The upper trough over the Pacific Northwest will weaken Thursday and Friday with gradually rising upper heights. This should translate into a very minor warming trend. It should be largely dry but there is enough uncertainty in the ensembles that a slight chance of showers cannot be ruled out for now. Schneider

AVIATION. -SHRA will linger near KBLI and KPAE through the overnight hours. MVFR CIGS will spread from west to east across Western Washington overnight, with most terminals seeing CIGS of 1 to 3K FT. High end IFR CIGs are possible at KHQM. Expect CIGs to gradually improve later this morning with clouds scattering during the afternoon. Many terminals will see a return to VFR conditions between 18 and 21Z. Prevailing winds will generally be in the northerly direction except for KBLI where southerly winds will prevail. Wind speeds generally AOB 10 kts, except for coastal terminals where occasional gusts to 20 kts are possible this afternoon.

KSEA . -SHRA have diminished at the terminal over the past few hours with VFR conditions currently remaining in place at the terminal. Expect CIGs to gradually lower through the night, reaching low end VFR/high end MVFR levels (generally 2-3K FT) by daybreak. CIGs will lift during the morning hours and scatter this afternoon, with VFR conditions resuming by 18 to 20Z. Northerly winds will prevail through the period at speeds AOB 10 kts.

Pullin

MARINE. Northerly to northwesterly flow in the wake of yesterday's weak front will persist across the offshore waters through much of the weekend. Advisory level winds and seas are expected this evening into the overnight hours offshore as northwesterly swells will likely reach 10 feet in spots by Sunday morning. Strong nocturnal westerly pushes will yield advisory level conditions in the Strait of Juan de Fuca into early next week.

Next week, offshore seas will generally range from 5 to 7 feet with the exception of late Monday into Tuesday where a system will potentially yield higher seas. Northwest swell expected through at least midweek.

Pullin

HYDROLOGY. The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated as needed until then.

SEW WATCHES/WARNINGS/ADVISORIES. WA . None. PZ . Small Craft Advisory from 3 PM this afternoon to 11 PM PDT this evening for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 3 PM this afternoon to 8 AM PDT Sunday 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.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46121 12 mi17 min 1.9 62°F 1020.6 hPa56°F
TCMW1 - 9446482 - Tacoma Met, WA 17 mi46 min WNW 4.1 G 5.1
TCNW1 - 9446484 - Tacoma, WA 17 mi46 min 61°F 55°F1021.1 hPa (-0.0)
WPOW1 - West Point, WA 39 mi46 min NNE 6 G 6 57°F 1020.8 hPa (+0.0)57°F
46120 47 mi17 min N 3.9 57°F 1019.8 hPa55°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Lewis / Gray U. S. Army Airfield, WA5 mi48 minWNW 410.00 miOvercast62°F54°F76%1020.6 hPa
Tacoma / McChord Air Force Base, WA10 mi48 minWNW 510.00 miOvercast62°F49°F62%1020.9 hPa
Tacoma, Tacoma Narrows Airport, WA11 mi53 minN 010.00 miOvercast59°F53°F81%1020.6 hPa
Olympia, Olympia Airport, WA16 mi52 minSSW 410.00 miOvercast62°F50°F65%1020.4 hPa
Pierce County-Thun Field, WA20 mi51 minN 010.00 miOvercast63°F50°F64%1020.7 hPa

Link to 5 minute data for KGRF

Wind History from GRF (wind in knots)
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Last 24hrSE7SE6SE5SE6SE6SE4SE4CalmSW6CalmW4N3W6CalmW9W6W8W9W10W5W4CalmCalmW4
1 day agoSE5S7SE6S6S10S10S10S13
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2 days agoSE6SE3CalmW3CalmSW3SW6W7W5NW6W10W8W8W10W11W11W13W10SW7S4SE7SE7SE6SE7

Tide / Current Tables for Dupont Wharf, Washington
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Dupont Wharf
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Sat -- 03:48 AM PDT     4.45 feet Low Tide
Sat -- 05:59 AM PDT     Sunrise
Sat -- 09:04 AM PDT     10.45 feet High Tide
Sat -- 11:05 AM PDT     Moonset
Sat -- 03:27 PM PDT     1.91 feet Low Tide
Sat -- 08:31 PM PDT     Sunset
Sat -- 10:05 PM PDT     13.18 feet High Tide
Sat -- 11:05 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.88.56.34.84.55.26.78.49.810.410.18.97.15.13.222.13.55.78.310.712.513.212.8

Tide / Current Tables for Nisqually Reach, Washington Current
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Nisqually Reach
Click for Map
Sat -- 01:21 AM PDT     -1.02 knots Max Ebb
Sat -- 04:32 AM PDT     0.01 knots Slack
Sat -- 05:59 AM PDT     Sunrise
Sat -- 06:55 AM PDT     0.74 knots Max Flood
Sat -- 09:21 AM PDT     -0.00 knots Slack
Sat -- 11:05 AM PDT     Moonset
Sat -- 01:01 PM PDT     -1.11 knots Max Ebb
Sat -- 04:23 PM PDT     0.00 knots Slack
Sat -- 07:19 PM PDT     1.06 knots Max Flood
Sat -- 08:32 PM PDT     Sunset
Sat -- 10:21 PM PDT     -0.01 knots Slack
Sat -- 11:05 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-1-1-0.8-0.30.20.60.70.60.2-0.3-0.7-1-1.1-1-0.7-0.20.30.8110.60.2-0.3

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 (5,6,7,8)
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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.