Friday, July10, 2020
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Marine Weather and Tides
Whidbey Island Station, 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 5:19AMSunset 9:12PM Friday July 10, 2020 7:56 AM PDT (14:56 UTC) Moonrise 11:26PMMoonset 10:10AM Illumination 74% 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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PZZ132 East Entrance U.s. Waters Strait Of Juan De Fuca- 233 Am Pdt Fri Jul 10 2020
.small craft advisory in effect from this afternoon through late tonight...
Today..SW wind 5 to 15 kt becoming W in the afternoon. Wind waves 2 ft or less.
Tonight..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Sat..W wind 5 to 15 kt. Wind waves 2 ft or less. A slight chance of rain in the afternoon.
Sat night..W wind 10 to 20 kt. Wind waves 1 to 3 ft.
Sun..W wind 5 to 15 kt becoming 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft.
Sun night..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Mon..W wind 5 to 15 kt. Wind waves 2 ft or less.
Tue..SW wind to 10 kt becoming W 5 to 15 kt. Wind waves 2 ft or less.
PZZ100 233 Am Pdt Fri Jul 10 2020
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will continue into early next as high pressure remains centered offshore.


7 Day Forecast for Marine Location Near Whidbey Island Station CDP, WA
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location: 48.32, -122.83     debug


Area Discussion for - Seattle, WA
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FXUS66 KSEW 100956 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 300 AM PDT Fri Jul 10 2020

SYNOPSIS. Dry weather and slightly warmer temperatures return for Friday into much of Saturday before another weak system brings a chance for showers on Sunday. The start of next work week is looking dry.

SHORT TERM /TODAY THROUGH SUNDAY/. Current radar not showing much this early morning but looking at satellite suggests there may yet still be a stray shower out there this morning over eastern portions of Snohomish and King counties. Not a lot to these individual cells and would not expect much from them . likely not surviving past sunrise.

W WA looks to be in store for a dry day today as upper level ridging traverses the area and even as the ridge axis moves east of the area this afternoon. An upper level low off the coast will try to push inland Saturday but neither the deterministic models nor the ensembles are particularly excited about the prospect of precip with this system as it appears to fall apart as it crosses the area. This system will linger into Sunday . again with PoPs having a hard time getting out of chance category . save for locations in higher elevations. A Pacific upper level ridge will then start to nudge into the area for dry conditions to resume Sunday evening.

Not much fluctuation in temps today and Saturday with highs in the interior lowlands generally in the lower to mid 70s while coastal locations can look forward to more mild conditions with highs generally in the mid 60s. Sunday will see conditions cool slightly thanks to the passing system with the interior lowlands generally around 70 and the coast in the lower 60s.

LONG TERM /MONDAY THROUGH THURSDAY/. Upper level ridging will bring a return to dry conditions Monday and most of Tuesday. Deterministic models are trying to show some sort of weak disturbance or front that wants to try and dip down into W WA Tuesday evening . but neither model really pulls it off. Ensemble members . however . are all over the board which is impacting PoPs in the forecast. While the general consensus remains unimpressed and would wager that the Tuesday night thru Wednesday morning time frame will likely remain dry . the ensemble mean does rise somewhat and as such . PoPs are present in the forecast. The ECMWF shows a better organized lobe off an upper level low over central Canada that should result in some precip over the area . however the GFS keeps things to the north and the ensembles maintain their general ennui/apathy toward any significant precip . once again keeping PoPs generally slight chance to low-end chance. Deterministic models in agreement that a weak upper level ridge should bring dry conditions Thursday while ensembles remain in their emo phase with low end PoPs in the forecast closing out the long term in a similarly adolescent mindset of low confidence. 18

AVIATION. Westerly flow aloft will become southwesterly late tonight as another upper trough moves into the offshore waters. Stratocumulus and some stratus has filled in across much of the lowlands with areas of high end MVFR ceilings. Expecting this to scatter out to VFR by mid to late morning with weak upper ridging building into the region. Low MVFR in stratus returns to the coast tonight, but expecting much of interior to remain VFR overnight.

KSEA . High end MVFR possible at times through about 18Z or 19Z then VFR through tonight. Surface winds light becoming W-SW this morning . then shifting to northerly by late this afternoon. 27

MARINE. Surface high pressure will remain over the coastal waters with lower pressure east of the Cascades over the next several days. Weak weather systems passing through the region will increase the onshore flow from time to time. Westerlies in the central and eastern portions of the Strait of Juan de Fuca will reach small craft advisory criteria most afternoons/evenings over the next few days, otherwise winds and seas will remain rather quiet. 27

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 5 PM this afternoon to 3 AM PDT Saturday 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
SISW1 - Smith Island, WA 0 mi137 min S 8 G 8.9 52°F 1020.5 hPa49°F
PTWW1 - 9444900 - Port Townsend, WA 15 mi57 min Calm G 1 55°F 51°F1022 hPa (+1.8)
FRDW1 - 9449880 - Friday Harbor, WA 18 mi81 min SW 8 G 8.9 54°F 51°F1020.4 hPa
46088 - New Dungeness, WA (Hein Bank) 19 mi157 min WSW 9.7 G 14 53°F 50°F1020 hPa50°F
PBFW1 - Padilla Bay Reserve, WA 22 mi87 min S 2.9 55°F 1021 hPa52°F
46125 30 mi36 min 55°F 1020.8 hPa51°F
PTAW1 - 9444090 - Port Angeles, WA 35 mi81 min 57°F 50°F1020.9 hPa
CHYW1 - 9449424 - Cherry Point, WA 38 mi57 min 1020.9 hPa (+1.9)
CPMW1 38 mi57 min SSE 7 G 7 56°F
46267 42 mi117 min 49°F2 ft
46120 45 mi30 min SSW 3.9 56°F 1020.8 hPa52°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, WA10 mi2 hrsSW 310.00 miMostly Cloudy56°F48°F77%1021.6 hPa
Friday Harbor Airport, WA17 mi64 minSW 510.00 miMostly Cloudy54°F48°F80%1020.9 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA24 mi62 minS 310.00 miOvercast57°F53°F88%1021.3 hPa

Link to 5 minute data for KNUW

Wind History from NUW (wind in knots)
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Last 24hrCalmCalmSE6SE8S6NW4W5SW7W4SW8W5SW9SW11SW11SW10SW10SW95SW4SW4SW6SW5SW3SW5
1 day agoS5SW7SW7SW5W7W8W8W5NW6W5W4W5W3SW4SW6SW4W3SW6SW5CalmCalmCalmCalmCalm
2 days ago3S4SE3S5SW7SW7SW6SW7SW6SW7W8SW8SW9SW7SW8SW9SW8SW7SW9W4CalmCalmSW3SW4

Tide / Current Tables for Smith Island, Washington
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Smith Island
Click for Map
Fri -- 12:06 AM PDT     Moonrise
Fri -- 03:11 AM PDT     3.98 feet Low Tide
Fri -- 05:21 AM PDT     Sunrise
Fri -- 07:24 AM PDT     4.67 feet High Tide
Fri -- 11:10 AM PDT     Moonset
Fri -- 01:48 PM PDT     0.41 feet Low Tide
Fri -- 09:11 PM PDT     Sunset
Fri -- 09:48 PM PDT     6.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.44.74.2444.24.54.74.64.23.42.31.30.60.40.81.52.63.85.16.16.86.96.5

Tide / Current Tables for Smith Island, 1.4 miles SSW of, Washington Current
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Smith Island
Click for MapFlood direction 90 true
Ebb direction 280 true

Fri -- 12:06 AM PDT     Moonrise
Fri -- 01:46 AM PDT     -0.91 knots Max Ebb
Fri -- 05:22 AM PDT     Sunrise
Fri -- 05:30 AM PDT     0.00 knots Slack
Fri -- 07:02 AM PDT     0.14 knots Max Flood
Fri -- 08:49 AM PDT     -0.00 knots Slack
Fri -- 11:11 AM PDT     Moonset
Fri -- 01:04 PM PDT     -0.91 knots Max Ebb
Fri -- 04:03 PM PDT     0.00 knots Slack
Fri -- 07:22 PM PDT     0.81 knots Max Flood
Fri -- 09:11 PM PDT     Sunset
Fri -- 10:59 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.9-0.9-0.8-0.5-0.10.10.10.1-0-0.3-0.6-0.8-0.9-0.8-0.5-00.40.60.80.80.60.3-0

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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weather_mapweather_map weather_map

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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.