Tuesday, August4, 2020
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Marine Weather and Tides
Klahanie, 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 5:49AMSunset 8:39PM Tuesday August 4, 2020 7:51 AM PDT (14:51 UTC) Moonrise 8:41PMMoonset 5:39AM Illumination 100% Phase: Full Moon; Moon at 15 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- 226 Am Pdt Tue Aug 4 2020
Today..N wind to 10 kt rising to 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Tonight..NE wind 5 to 15 kt easing to 10 kt after midnight. Wind waves 2 ft or less.
Wed..N wind to 10 kt. Wind waves 1 ft or less.
Wed night..N wind 5 to 15 kt becoming S after midnight. Wind waves 2 ft or less.
Thu..S wind to 10 kt becoming ne in the afternoon. Wind waves 1 ft or less.
Thu night..N wind to 10 kt becoming sw after midnight. Wind waves 2 ft or less.
Fri..S wind to 10 kt becoming nw. Wind waves 1 ft or less.
Sat..Light wind becoming N to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
PZZ100 226 Am Pdt Tue Aug 4 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will continue through this week. A weak front will move through the waters Thursday.


7 Day Forecast for Marine Location Near Klahanie, WA
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location: 47.57, -122     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 040949 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 249 AM PDT Tue Aug 4 2020

SYNOPSIS. A short return to upper level high pressure is in store for today and Wednesday ahead of the next low pressure system to arrive on Thursday. Dry and seasonably warm temperatures expected today and Wednesday.

SHORT TERM /TODAY THROUGH THURSDAY/. High pressure centered over eastern ID/MT with light onshore flow will keep things dry and seasonably normal today and Wednesday before the next system arrives on Thursday. Temperatures will be in the upper 70s with low 80s in spots throughout the interior with cooler 60s along the coast.

Widespread PoPs over the CWA associated with Thursday's system, but generally not a lot of rain accumulation expected. The forecast came in a little too vigorous on thunder chances this morning and after reviewing some of the hi-res models, it would appear that the dynamics and sufficient instability are just not in place to support it at this time. As such, the chances were significantly tampered down in this morning's forecast. The best chance for thunder is probably on the east side of the Cascades but will warrant additional monitoring.

Unlike the last low pressure system to move through the area, Thursday's system is expected to bring the temperatures down into the low 70s and upper 60s in the interior. This will be a refreshing exchange of cooler air for those prefer something a bit more moderate temperature wise.

LONG TERM /FRIDAY THROUGH MONDAY/. Now for the great extended range model debate . the GFS wants to keep some light shower activity in the forecast into Friday with a weak system falling apart on Saturday as it reaches the coast. After that, the GFS builds another ridge into the area, keeping things dry and warm into early next week. On the other hand, the ECMWF would like to keep it unsettled through the weekend, without developing the early-week ridge. As of now, the forecast has temperatures in the upper 70s to low 80s with 60s along the coast.

Kristell

AVIATION. Onshore flow will bring marine stratus clouds inland this morning with IFR to MVFR ceilings possible. The stratus clouds will burn back toward the coast this afternoon with VFR conditions in the interior. Low clouds will return overnight. 33

KSEA . Patchy low clouds and IFR cigs possible this morning, then becoming VFR this afternoon. N winds to 10 kt. 33

MARINE. Onshore flow will continue today and Wednesday. Highest wind and waves will be found through the Strait of Juan de Fuca - Small Craft Advisory winds are likely. Onshore flow will increase on Thursday as a cold front moves inland. A second, weaker, front will arrive on Friday. Onshore flow will continue into the weekend. 33

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 6 PM this evening to 8 AM PDT Wednesday 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
WPOW1 - West Point, WA 24 mi52 min NE 2.9 G 2.9 56°F 1020 hPa (+0.0)56°F
46120 25 mi39 min N 1.9 57°F 1018.9 hPa56°F
TCMW1 - 9446482 - Tacoma Met, WA 30 mi58 min NW 1.9 G 2.9
TCNW1 - 9446484 - Tacoma, WA 30 mi58 min 61°F 56°F1020.2 hPa
46125 41 mi41 min 55°F 1019.3 hPa54°F
46121 44 mi39 min 1.9 62°F 1019.7 hPa60°F

Wind History for Seattle, Puget Sound, WA, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Renton Municipal Airport, WA13 mi59 minN 07.00 miFair64°F57°F78%1020 hPa
Boeing Field - King County International Airport, WA16 mi59 minN 010.00 miA Few Clouds63°F57°F81%1019.5 hPa
Seattle, Seattle-Tacoma International Airport, WA19 mi59 minN 010.00 miFair62°F57°F86%1020.2 hPa

Link to 5 minute data for KRNT

Wind History from RNT (wind in knots)
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Last 24hrSE3SE4435S4S7N6N6N6NW8NW8NW11N6N6N6N64N3CalmN4CalmN3Calm
1 day agoS3S5SE6S6S9S7SW7W5SW7N7SW8SW6SW4W3NW43S3S5CalmCalmSE3S4SE3SE4
2 days agoS6S6SW5CalmCalm35S53N6N4N3CalmCalmCalmS3CalmS4CalmCalmCalmSE3SE3S3

Tide / Current Tables for Duwamish Waterway, Washington
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Duwamish Waterway
Click for Map
Tue -- 12:28 AM PDT     6.04 feet Low Tide
Tue -- 05:08 AM PDT     9.79 feet High Tide
Tue -- 05:51 AM PDT     Sunrise
Tue -- 06:40 AM PDT     Moonset
Tue -- 12:21 PM PDT     -1.50 feet Low Tide
Tue -- 07:33 PM PDT     11.51 feet High Tide
Tue -- 08:38 PM PDT     Sunset
Tue -- 09:42 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.16.26.98.19.29.89.58.46.64.21.7-0.4-1.4-1.20.32.75.68.310.311.411.410.69.17.4

Tide / Current Tables for Restoration Point, 0.6 miles ESE of, Washington Current
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Restoration Point
Click for Map
Tue -- 01:39 AM PDT     0.00 knots Slack
Tue -- 02:50 AM PDT     0.23 knots Max Flood
Tue -- 05:11 AM PDT     -0.00 knots Slack
Tue -- 05:51 AM PDT     Sunrise
Tue -- 06:41 AM PDT     Moonset
Tue -- 09:24 AM PDT     -1.04 knots Max Ebb
Tue -- 01:08 PM PDT     0.01 knots Slack
Tue -- 03:40 PM PDT     0.85 knots Max Flood
Tue -- 07:40 PM PDT     -0.00 knots Slack
Tue -- 08:38 PM PDT     Sunset
Tue -- 09:42 PM PDT     Moonrise
Tue -- 10:38 PM PDT     -0.69 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.20.10.20.20-0.2-0.6-0.9-1-1-0.8-0.5-0.10.40.80.80.70.50.2-0.1-0.5-0.7-0.7

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 (10,2,3,4)
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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.