Tuesday, May26, 2020
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Marine Weather and Tides
Lake Ketchum, 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 5:14AMSunset 8:58PM Tuesday May 26, 2020 10:23 AM PDT (17:23 UTC) Moonrise 7:30AMMoonset 11:54PM Illumination 21% Phase: Waxing Crescent; Moon at 4 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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PZZ134 Admiralty Inlet- 907 Am Pdt Tue May 26 2020
Today..NW wind to 10 kt. Wind waves 1 ft or less.
Tonight..NW wind to 10 kt. Wind waves 1 ft or less.
Wed..NW wind to 10 kt becoming 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
Wed night..NW wind to 10 kt. Wind waves 1 ft or less.
Thu..Light wind becoming nw to 10 kt in the afternoon. Wind waves 1 ft or less.
Thu night..NW wind to 10 kt. Wind waves 1 ft or less.
Fri..Light wind becoming nw to 10 kt. Wind waves less than 1 ft becoming 1 ft or less.
Sat..NW wind to 10 kt. Wind waves 1 ft or less.
PZZ100 907 Am Pdt Tue May 26 2020
Synopsis for the northern and central washington coastal and inland waters..Winds will generally remain light through the remainder of the week, with a brief period of offshore flow possible on Wednesday. Flow will return to onshore Thursday through the weekend with no headlines expected at this time.


7 Day Forecast for Marine Location Near Lake Ketchum, WA
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location: 48.3, -122.44     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 261626 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 926 AM PDT Tue May 26 2020

SYNOPSIS. Lingering low clouds and light drizzle across the region today in onshore flow. Upper level ridging builds offshore this afternoon before shifting over Western Washington Wednesday. This will lead to sunny and much warmer conditions Wednesday through Friday. An upper level low will lift northeast into the Pacific Northwest over the weekend, bringing a return of a cooler and wet pattern.

UPDATE. Widespread low clouds remain across the region with light drizzle ongoing around Puget Sound and into the Cascade foothills. Clouds and drizzle will gradually scatter and end, respectively, from the northwest through the day. Satellite and surface observations indicate a low but generally shallow cloud layer with tops generally around 3000 ft over the Olympics, but closer to 6000 ft over the Cascades. As high pressure strengthens over the eastern Pacific and the trailing front to our south continues to advance, expect heights to rise and the low/mid levels to dry out, signaling a shift to a warmer and drier pattern. A few upward adjustments to temperatures for the remainder of the week were also made to better match latest guidance, with temperatures likely reaching the upper 70s to around 80 from the central Puget Sound south through Lewis County on Thursday and Friday. The previous short/long term discussion follows below, with updated Marine and Aviation sections below. Cullen

SHORT TERM /TODAY THROUGH THURSDAY/. Current satellite imagery and obs show low clouds in place over much of W WA. Radar returns pretty light . which is not terribly helpful . but matched with obs can determine probably some light showers or drizzle still present due to lingering PSCZ over portions of Snohomish county at the time of this writing. Inherited forecast from evening shift still looks legit . with the prospect of this drizzle continuing this morning for not only the usual PSCZ targets of King and the aforementioned Snohomish . but also potentially spreading further south as well.

Should see conditions improve by afternoon . with partly to mostly sunny skies over the western half of the CWA while some clouds might linger over locations east of the Sound. As the ridge off the coast continues to build and gradually move east . skies expected to clear out tonight paving the way for sunny and dry conditions for the remainder of the short term.

Temps today will kickstart the warming trend in earnest with interior locations seeing temps climb into the mid to upper 60s while the coast will be a little cooler in the lower 60s. Wednesday looks to be the warmest day of the week along the coast as they will peak in the mid to upper 60s while the interior continues its warming trend getting in the lower to mid 70s. Temps peak in the interior Thursday with high temperatures in the mid to upper 70s . with some locations in the SW interior getting to 80.

LONG TERM /FRIDAY THROUGH MONDAY/. Friday has W WA on the back side of the upper level ridge with dry conditions still in place but temps falling slightly. Deterministic models still a little out of whack . by about 12 hours . but at least agree on the general trend . bringing an upper level low up from the Pacific waters off the California coast GFS is faster with this feature. bringing it in Saturday morning while the ECMWF is slower . bringing it in late Saturday afternoon/Saturday evening. This will bring a return of precip to the area and knock temps back down into the 60s for the weekend. Following the exit of this system comes a quick moving upper level ridge which may dry conditions out for at least part of Monday . but with an upper level trough right off the coast . the return of an unsettled weather pattern seems to be in the offering next week. 18

AVIATION. There are low clouds across Western Washington. The mountains and foothills are obscured. Areas of drizzle in the PSCZ this morning is giving some areas around north Seattle to Everett poor vsby and is obscuring the hills. The low clouds will lift and break up into the afternoon and the PSCZ drizzle should dry up. Overall it should be partly sunny this afternoon and mostly clear by evening as high pressure with a drier air mass shifts into the region.

KSEA . Morning clouds and perhaps some drizzle should give way to clearing this afternoon. The light northerly breeze should persist.

MARINE. Gradients are fairly light as high pressure nudges in over the area. Somewhat offshore flow on Wednesday will turn onshore Thursday as the high pressure gives out and weather systems near the region.

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 . None.



www.weather.gov/seattle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PBFW1 - Padilla Bay Reserve, WA 11 mi54 min ENE 1 58°F 1022 hPa53°F
PTWW1 - 9444900 - Port Townsend, WA 21 mi54 min WSW 7 G 9.9 56°F 51°F1022.3 hPa
SISW1 - Smith Island, WA 21 mi34 min W 8.9 G 11 51°F 1021.9 hPa47°F
46125 29 mi37 min 51°F 1021.3 hPa50°F
FRDW1 - 9449880 - Friday Harbor, WA 35 mi48 min ENE 4.1 G 5.1 51°F 50°F1021.3 hPa
46120 37 mi36 min 53°F 1021.1 hPa47°F
46088 - New Dungeness, WA (Hein Bank) 39 mi34 min 7.8 G 9.7 50°F1 ft1022.4 hPa
CHYW1 - 9449424 - Cherry Point, WA 42 mi54 min 1021.7 hPa
CPMW1 42 mi60 min S 4.1 G 6 53°F
WPOW1 - West Point, WA 44 mi84 min NNE 4.1 G 5.1 52°F 1022 hPa (+1.0)51°F

Wind History for Port Townsend, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Whidbey Island Naval Air Station - Ault Field, WA12 mi28 minWNW 710.00 miMostly Cloudy55°F48°F80%1023 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA12 mi29 minS 310.00 miOvercast64°F53°F68%1021.7 hPa
Arlington Municipal Airport, WA17 mi28 minWNW 310.00 miOvercast54°F50°F87%1022.4 hPa

Link to 5 minute data for KNUW

Wind History from NUW (wind in knots)
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Last 24hrW3W5W5W6SW5W3W4W4SW6W4SW4SW11SW10SW6SW11SW9W11W9W10W7W7W4W6W7
1 day agoNW5W4W5W6W6W6W5NW4W3CalmW5W3SW3SW4SW3CalmCalmCalmSW3CalmE3SE4SE5Calm
2 days agoSW9W7W7W7W5W6W4W5W4W4SW6SW6SW7SW8W4CalmCalmCalmSE3SE4SE3CalmCalmNW5

Tide / Current Tables for Stanwood, Washington
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Stanwood
Click for Map
Tue -- 12:05 AM PDT     Moonset
Tue -- 04:34 AM PDT     2.11 feet Low Tide
Tue -- 05:17 AM PDT     Sunrise
Tue -- 07:03 AM PDT     6.01 feet High Tide
Tue -- 08:29 AM PDT     Moonrise
Tue -- 04:22 PM PDT     -0.50 feet Low Tide
Tue -- 08:56 PM PDT     Sunset
Tue -- 10:09 PM PDT     7.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.84.73.62.72.22.44.565.95.54.73.82.81.70.7-0.1-0.5-0.21.13.25.26.77.37.2

Tide / Current Tables for Deception Pass, Washington Current
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Deception Pass
Click for Map
Tue -- 12:07 AM PDT     Moonset
Tue -- 01:07 AM PDT     0.00 knots Slack
Tue -- 03:37 AM PDT     3.75 knots Max Flood
Tue -- 05:17 AM PDT     Sunrise
Tue -- 05:40 AM PDT     -0.00 knots Slack
Tue -- 08:29 AM PDT     Moonrise
Tue -- 09:27 AM PDT     -6.64 knots Max Ebb
Tue -- 12:12 PM PDT     0.05 knots Slack
Tue -- 04:05 PM PDT     6.16 knots Max Flood
Tue -- 07:37 PM PDT     -0.00 knots Slack
Tue -- 08:58 PM PDT     Sunset
Tue -- 10:29 PM PDT     -6.25 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-4.1-1.62.43.53.72.5-2.7-4.8-5.9-6.6-6.5-5.3-2.53.14.75.76.25.84.52.6-3-5.1-6.1-6.1

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 (13,3,4,5)
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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.