Wednesday, June20, 2018 L-36.com


Marine Weather and Tides
Whidbey Island Station, WA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:07AMSunset 9:17PM Wednesday June 20, 2018 12:02 PM PDT (19:02 UTC) Moonrise 12:29PMMoonset 12:35AM Illumination 49% Phase: First Quarter Moon; Moon at 7 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- 900 Am Pdt Wed Jun 20 2018
.gale warning in effect from 2 pm pdt this afternoon through late tonight...
Today..W wind 5 to 15 kt rising to 15 to 25 kt in the afternoon. Wind waves 2 ft or less building to 2 to 4 ft.
Tonight..W wind 25 to 35 kt. Wind waves 4 to 6 ft. A chance of showers in the evening.
Thu..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Thu night..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Fri..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Fri night..W wind 15 to 25 kt. Wind waves 2 to 4 ft.
Sat..W wind 15 to 25 kt rising to 20 to 30 kt. Wind waves 2 to 5 ft.
Sun..W wind 10 to 20 kt rising to 25 to 35 kt. Wind waves 1 to 3 ft building to 4 to 6 ft.
PZZ100 900 Am Pdt Wed Jun 20 2018
Synopsis for the northern and central washington coastal and inland waters..Strong onshore flow will develop this afternoon through tonight. Gale force westerlies are likely in the strait. Onshore flow will remain strong Thursday then east Friday and Saturday. Onshore flow is expected to increase again on Sunday.

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 201636
afdsew
area forecast discussion
national weather service seattle wa
935 am pdt Wed jun 20 2018

Synopsis An upper ridge east of the cascades will bring another
day of near record high temperatures to western washington today,
with partly to mostly sunny skies and a chance of thunderstorms
late in the day. Onshore flow will bring cooler marine air inland
Thursday and Friday. High pressure aloft will cross the region
this weekend, followed by an upper trough early next week.

Short term Current satellite at the time of this writing shows
clouds confined mostly to the coastal waters with a little spillover
onto the coast itself. Any clouds to the east are mostly high clouds
although alternating between the satellite and looking out the
window... One can see the humble beginnings of some cumulus clouds
which will factor into one of the main forecast problems for the
day. More on that later. Looking at the 24 hour
trends... Temperatures so far this morning are about on track with
where they were yesterday at this time... Although sea-tac is showing
5 degrees warmer... Which of course touches on the other main
forecast problem for today.

First on the to-do list is temperatures. Model guidance remains
consistent with solutions of 24 hours ago with expected high
temperatures at sea-tac to fall just short of the record high today
of 88 degrees. But seeing that... As mentioned earlier... That the
airport is 5 degrees warmer than what it was yesterday at this
time... Current forecast looks to be on track and as such it is going
to be close. Zooming out to the remainder of W wa... Olm and bli may
also get close to record temps today and as such putting an emphasis
on heat for not only the seattle metro area... But also the sw
interior all the way up to the canadian border. With lows this
morning still getting down into the 50s and lower 60s... Current heat
guidance suggests that this will be enough to offset any potential
heat headlines for today. That being said... Temperatures this
afternoon are still expected to be... As already mentioned... Near
record in some locations and certainly well above average for most.

Thus... Those prone to heat should do their best to mitigate the
afternoon warmth as best they can... Such as going into an air
conditioned building. Those outside should stay hydrated... Take
plenty of breaks and seek out shade. Also... Do not forget about pets
and children... Neither should be left in the car.

Problem number two is that models are coming in a bit more aggressive
on the thunderstorm threat for late this afternoon and early
evening. Following in the trend of earlier solutions... Activity will
start along the cascades this afternoon but then new solutions have
this activity spreading westward by this evening. Given that some
cumulus development is already occurring... Albeit in its very early
stages... This new solution seems to be on track. All that being said
though... It is still only a slight chance for thunder... Meaning any
activity that arises will likely be of a more isolated nature.

Rewinding back to yesterday and the relative lack of activity over
the cascades does present a counterargument and as such serves as a
restraint on expectations for today.

An offshore upper trough will begin to move inland tonight
accompanied by strong low level onshore flow resulting in a good
marine push tonight. Thursday should begin with considerable low
cloud cover, and probably some drizzle at and near the coast, but
the interior should become partly to mostly sunny during the day.

There could also be some spotty light showers, mainly over the
mountains. It will be considerably cooler Thursday, with highs
across the interior lowlands in the upper 60s and 70s.

Another upper trough will move into western washington Thursday
night and Friday. This feature will be better defined, but will
only bring a chance of light showers to the area -- mainly the
coast, mountains, and eventually in the puget sound convergence
zone Friday evening. Friday will be a bit cooler yet, with highs
mainly in the mid 60s to lower 70s. Smr mcdonnal

Long term From previous discussion... An upper trough will build
as it progresses across the offshore waters Friday and Friday night.

It should reach the pacific northwest coast Saturday, move into
western washington Saturday night and east of the cascades on
Sunday. The ridge will bring sunnier and warmer weather this
weekend, especially Sunday. A broad upper trough to our north should
bring a return to cooler weather, stronger onshore flow, partly
sunny skies and a chance of showers for Monday and Tuesday. Mcdonnal

Aviation Light southwest flow aloft will continue today and
tonight. The air mass is moist in mid and upper levels and will
become unstable as the day GOES on. A weak disturbance moving north
through the area will likely spark some convection 21z-03z. Any
convection is more likely in the cascades but thunderstorms may
impact the terminals around puget sound. Low level onshore flow will
become strong this evening and will bring a marine layer inland
across much of the interior of western washington for ifr or low
MVFR ceilings Thursday morning.

Ksea... Discussion above applies. TAF has a tempo group for thunder
23z-03z. Ceilings will beVFR until after 11z when marine stratus
will bring MVFR ceilings. Northerly wind 4-8 kt today becoming
southerly 5-10 kt overnight. Chb

Marine Strong onshore flow will develop late this afternoon and
tonight as pressures rise offshore and fall east of the cascades. A
gale warning is in effect for the strait, with small craft
advisories for adjacent waters.

Moderate to strong onshore pressure gradients will continue Thursday
into Thursday night, then ease Friday through early Sunday as a weak
ridge of high pressure moves across the waters. Onshore flow will
increase again late Sunday. Chb

Sew watches warnings advisories
Wa... None.

Pz... Gale warning from 2 pm this afternoon to 5 am pdt Thursday for
central u.S. Waters strait of juan de fuca-east entrance
u.S. Waters strait of juan de fuca.

Small craft advisory from 5 pm this afternoon to 3 am pdt
Thursday for admiralty inlet-northern inland waters
including the san juan islands-west entrance u.S. Waters
strait of juan de fuca.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SISW1 - Smith Island, WA 0 mi73 min SW 5.1 G 6 53°F 1015.1 hPa (-0.5)50°F
PTWW1 - 9444900 - Port Townsend, WA 15 mi45 min W 7 G 8.9 64°F 52°F1015.3 hPa
FRDW1 - 9449880 - Friday Harbor, WA 18 mi87 min Calm G 1.9 58°F 52°F1014.6 hPa
46088 - New Dungeness, WA (Hein Bank) 18 mi43 min WSW 5.8 G 5.8 52°F 52°F1 ft1014.8 hPa52°F
PBFW1 - Padilla Bay Reserve, WA 22 mi93 min N 6 65°F 1015 hPa58°F
46125 30 mi50 min 7.8 55°F 1014.1 hPa53°F
46118 31 mi68 min W 3.9 62°F 1014 hPa57°F
PTAW1 - 9444090 - Port Angeles, WA 35 mi87 min NW 14 G 17 54°F 52°F1015.2 hPa
CPMW1 38 mi45 min Calm G 1 59°F 55°F
CHYW1 - 9449424 - Cherry Point, WA 38 mi45 min Calm G 1 58°F 1014.3 hPa
46120 45 mi45 min S 12 60°F 1013.6 hPa56°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 mi67 minW 710.00 miOvercast62°F52°F70%1016.1 hPa
Friday Harbor Airport, WA17 mi70 minESE 410.00 miFair69°F55°F61%1015 hPa
Burlington/Mount Vernon, Skagit Regional Airport, WA24 mi68 minW 510.00 miFair73°F59°F61%1014.6 hPa

Wind History from NUW (wind in knots)
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Last 24hrNW8W7W7W5W5W7W4SW6SW4SW7SW10SW8SW3W4CalmW3W3W4SW6W5SW4W4W3W7
1 day agoW6W5W5NW6W5W5SW7SW6SW4SW5S8SW9S9
G15
SW7S6SW4S4S6SW6SW5W4W5W6NW7
2 days agoW7W6SW8W6W5W5W3W6CalmCalmCalmSE3SE6S6S6CalmSW6CalmCalmCalmW3NW4NW4NW5

Tide / Current Tables for Smith Island, Washington
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Smith Island
Click for Map
Wed -- 01:35 AM PDT     Moonset
Wed -- 03:52 AM PDT     First Quarter
Wed -- 05:10 AM PDT     Sunrise
Wed -- 05:13 AM PDT     3.11 feet Low Tide
Wed -- 10:14 AM PDT     4.56 feet High Tide
Wed -- 01:29 PM PDT     Moonrise
Wed -- 03:49 PM PDT     1.15 feet Low Tide
Wed -- 09:15 PM PDT     Sunset
Wed -- 11:34 PM PDT     7.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.26.25.143.43.13.23.53.94.34.64.43.9321.31.21.52.23.34.65.86.87.5

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

Wed -- 01:35 AM PDT     Moonset
Wed -- 03:29 AM PDT     -1.15 knots Max Ebb
Wed -- 03:52 AM PDT     First Quarter
Wed -- 05:10 AM PDT     Sunrise
Wed -- 07:05 AM PDT     0.00 knots Slack
Wed -- 09:13 AM PDT     0.34 knots Max Flood
Wed -- 11:41 AM PDT     -0.00 knots Slack
Wed -- 01:29 PM PDT     Moonrise
Wed -- 03:17 PM PDT     -0.86 knots Max Ebb
Wed -- 06:03 PM PDT     0.00 knots Slack
Wed -- 09:15 PM PDT     Sunset
Wed -- 09:19 PM PDT     0.83 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0-0.5-0.9-1.1-1.1-0.9-0.5-00.20.30.30.2-0.1-0.4-0.7-0.9-0.8-0.5-00.40.70.80.80.6

Weather Map and Satellite Images
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wmap_P
GOES 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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Wind Forecast for Seattle, WA (15,3,4,5)
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Ground Weather Radar Station Seattle/Tacoma, WA
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Disclaimer:
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 numerious 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.