Thursday, July9, 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 5:25AMSunset 9:08PM Thursday July 9, 2020 12:56 AM PDT (07:56 UTC) Moonrise 11:05PMMoonset 9:08AM Illumination 85% 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- 823 Pm Pdt Wed Jul 8 2020
Tonight..N wind 5 to 15 kt becoming variable after midnight. Wind waves 2 ft or less. A slight chance of rain in the evening then a chance of rain after midnight.
Thu..S wind to 10 kt becoming sw 10 to 20 kt in the afternoon. Wind waves 1 ft or less building to 1 to 3 ft in the afternoon. Rain likely.
Thu night..NW wind to 10 kt becoming se after midnight. Wind waves 1 ft or less. A chance of rain in the evening then a slight chance of rain after midnight.
Fri..Light wind becoming nw to 10 kt in the afternoon. Wind waves 1 ft or less.
Fri night..N wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Sat..Light wind becoming variable 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Sat night..Variable wind to 10 kt in the evening becoming light. Wind waves 1 ft or less.
Sun..S wind to 10 kt becoming nw. Wind waves 1 ft or less.
Mon..Light wind becoming W to 10 kt. Wind waves 1 ft or less.
PZZ100 823 Pm Pdt Wed Jul 8 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will continue through the upcoming weekend as high pressure remains centered offshore.


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 090310 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 810 PM PDT Wed Jul 8 2020

UPDATE. Dry weather for most of Western Washington this evening with increasing clouds as a front approaches the area. Rain has moved onshore across portions of the north coast and into the Strait of Juan de Fuca. Light rain will slide east through tonight into tomorrow morning with the best chance for steadier rain across northern areas and the coast. Mostly cloudy on Thursday with temperatures in the upper 60s to low 70s across the area.

SYNOPSIS. A weak ridge is sliding east this evening as a frontal system approaches the area. Additional upper level low pressure systems will move through the rest of the week. Light rain expected at times with no significant impacts expected across the area.

SHORT TERM /TONIGHT THROUGH SATURDAY/. Weak ridging has held off a thick cloud layer this afternoon and has brought the afternoon highs up a few degrees across the region. It will be short lived as the next trough moves onshore tomorrow and will bring light rain to the area. QPF amounts are still roughly around a tenth of an inch around the Sound and nearly a quarter of an inch possible at coastal locations.

Thursday's trough will shift east and heights will rise in response to the upper level ridge building over the Desert Southwest. This summertime synoptic phenomenon is a hallmark of the North American Monsoon season and advects moisture from Mexico, the Gulf of California and Gulf of Mexico into the Desert Southwest states for summertime thunderstorms to take place. The Pacific Northwest can benefit from this ridge, as it can help break up the unsettled pattern and allow for some warmer days to take shape across the region as it expands. This is likely going to help our temperatures on Friday come back up into the 70s, under mostly sunny skies. With the center of this ridge set up over the Southwest, temperatures will easily climb well above the 110 degree point in the near future, a stark contrast to our summer weather here in the Pacific Northwest.

By Saturday afternoon, the next trough will be just offshore. Depending on the thickness of the clouds moving in ahead of this Saturday's system, the high temperature forecast could fluctuate by a few degrees. If the timing stays on track for it to move onshore later in the day or in the evening hours, Saturday will still likely be a pleasant day in the 70s under partly sunny skies.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. The trough axis will move overhead on Sunday before exiting toward the east on Sunday. A round or two of light rain showers can be expected. Looking into early next week, the indication is for drier and sunnier weather. After Sunday, the pattern seems to show signs of improvement as a ridge develops offshore, raising the geopotential heights over the area. Highs will climb back up to normal or just slightly above in the first half of the week, given that this signal persists. It doesn't look to be a very dramatic pattern change, but one that could garner some excitement from those longing for summer to be a touch drier and more sunny.

Kristell

AVIATION. West-southwesterly flow aloft as an upper trough moves through the area into Thursday. VFR cigs this evening with increasing high clouds as a front approaches. MVFR cigs late tonight into Thursday afternoon as the front moves through. IFR possible in spots, mainly along the coast. Rain chances late tonight through the morning with the steadiest rain across northern areas and the coast. VFR cigs by late afternoon into the evening. Winds mainly light this evening southwesterly this evening with northerly winds across portions of the central Puget Sound. South winds 4 to 8 knots on Thursday.

KSEA . VFR cigs this evening. MVFR by late tonight (11-12z) into Thursday afternoon as a front moves through. Rain chances mainly in the morning (12z-17z). Light west winds this evening with south winds tomorrow. JD

MARINE. Onshore flow through the weekend with a few frontal systems at times increasing the flow. Small Craft Advisory winds through early tonight for the central and eastern portions of the Strait of Juan de Fuca. SCA winds possible into the weekend each evening for the Strait of Juan de Fuca with the increasing onshore flow. JD

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 until 1 AM PDT Thursday for Central U.S. Waters Strait Of Juan De Fuca-East 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
46121 20 mi35 min 1.9 62°F 1016.4 hPa52°F
TCMW1 - 9446482 - Tacoma Met, WA 34 mi57 min WNW 5.1 G 5.1
TCNW1 - 9446484 - Tacoma, WA 34 mi57 min 61°F 54°F1017.3 hPa (+0.0)
WPOW1 - West Point, WA 50 mi57 min NE 6 G 6 57°F 1016.9 hPa (-0.4)55°F

Wind History for Tacoma MET, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Olympia, Olympia Airport, WA9 mi63 minSSE 310.00 miFair54°F50°F87%1016.9 hPa
Shelton, Shelton Sanderson Field, WA13 mi64 minWSW 710.00 miMostly Cloudy57°F51°F81%1016 hPa
Fort Lewis / Gray U. S. Army Airfield, WA23 mi59 minN 010.00 miFair64°F62°F96%1017.2 hPa

Link to 5 minute data for KOLM

Wind History from OLM (wind in knots)
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Last 24hrCalmCalmCalmCalmS4CalmCalmS4S3S6S4S5S45S5SW5W3W54W5W4CalmCalmSE3
1 day agoSW5SW7SW7S5S7S7S6S7S7SW6S8S10S8S8S9S7S9S5W6SW7SW4S5S3Calm
2 days agoSE3S3S4CalmS3S33S4W35SW6SW7S7SW8W9SW9SW10
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SW8--W6W8SW7SW7SW7

Tide / Current Tables for Rocky Point, Eld Inlet, Washington
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Rocky Point
Click for Map
Thu -- 03:54 AM PDT     6.75 feet Low Tide
Thu -- 05:26 AM PDT     Sunrise
Thu -- 08:15 AM PDT     11.59 feet High Tide
Thu -- 10:08 AM PDT     Moonset
Thu -- 03:24 PM PDT     -0.29 feet Low Tide
Thu -- 09:07 PM PDT     Sunset
Thu -- 10:33 PM PDT     15.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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13.4118.77.26.87.5910.611.511.310.28.463.41.1-0.201.74.6811.313.915.215.3

Tide / Current Tables for Eld Inlet Entrance, Washington Current
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Eld Inlet Entrance
Click for Map
Thu -- 12:56 AM PDT     -0.47 knots Max Ebb
Thu -- 03:58 AM PDT     0.00 knots Slack
Thu -- 05:26 AM PDT     Sunrise
Thu -- 06:20 AM PDT     0.59 knots Max Flood
Thu -- 08:03 AM PDT     -0.01 knots Slack
Thu -- 10:07 AM PDT     Moonset
Thu -- 12:02 PM PDT     -0.66 knots Max Ebb
Thu -- 03:39 PM PDT     0.00 knots Slack
Thu -- 06:59 PM PDT     1.27 knots Max Flood
Thu -- 09:07 PM PDT     Sunset
Thu -- 10:05 PM PDT     -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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-0.4-0.5-0.4-0.300.40.60.50-0.2-0.4-0.6-0.7-0.6-0.5-0.20.20.71.11.31.10.60-0.2

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 (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.