Sunday, March18, 2018

Marine Weather and Tides
Sekiu, WA

Version 3.4
What's New / NOTES
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.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 7:16AMSunset 7:26PM Sunday March 18, 2018 8:30 AM PDT (15:30 UTC) Moonrise 7:19AMMoonset 7:56PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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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PZZ130 West Entrance U.s. Waters Strait Of Juan De Fuca- 807 Am Pdt Sun Mar 18 2018
Today..SE wind 5 to 15 kt. Wind waves 2 ft or less. W swell 4 ft at 14 seconds. A slight chance of showers.
Tonight..NE wind to 10 kt becoming W after midnight. Wind waves 1 ft or less. W swell 5 ft at 12 seconds.
Mon..NW wind to 10 kt. Wind waves 1 ft or less. W swell 4 ft at 12 seconds.
Mon night..NW wind 10 to 20 kt becoming 5 to 15 kt after midnight. Wind waves 1 to 3 ft. W swell 3 ft at 11 seconds.
Tue..W wind to 10 kt becoming nw in the afternoon. Wind waves 1 ft or less. W swell 3 ft at 13 seconds.
Tue night..NW wind 5 to 15 kt becoming W after midnight. Wind waves 2 ft or less. W swell 4 ft at 13 seconds.
Wed..E wind 5 to 15 kt becoming 10 to 20 kt. Wind waves 1 to 3 ft. W swell 4 ft.
Thu..SE wind 15 to 25 kt becoming S 5 to 15 kt. Wind waves 2 to 4 ft subsiding to 2 ft or less. W swell 6 ft building to 11 ft.
PZZ100 807 Am Pdt Sun Mar 18 2018
Synopsis for the northern and central washington coastal and inland waters..Winds will be generally light today. Onshore flow will increase Monday afternoon and evening, with small craft advisory westerlies likely in the strait of juan de fuca Monday evening. A weather system will begin to affect the area Wednesday, and by Thursday gales are possible.

7 Day Forecast for Marine Location Near Sekiu, WA
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location: 48.34, -124.25     debug

Area Discussion for - Seattle, WA
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Fxus66 ksew 181525
area forecast discussion
national weather service seattle wa
825 am pdt Sun mar 18 2018

Synopsis Upper level low pressure over the pacific northwest
will bring spotty light showers and Sun breaks to western
washington through Monday. A weak upper ridge will be over the
region Tuesday for mostly sunny weather. Rainy weather will return
Wednesday and Thursday as a system moves through, with cool
showery weather Friday and Saturday.

Short term A 5420 meter upper low is over the washington
offshore waters this morning, centered near 48n 127w; this is the
feature that formed over vancouver island on Saturday and drifted
south overnight. Light southerly flow aloft continues over western
washington to the east of the low. The air mass is slightly
unstable, moist below about 7000 ft, and the upper low is
producing some showers mainly over the coastal waters and along
the coast.

The upper low will weaken a bit as it moves slowly southwest
today. Daytime heating will destabilize the air mass a bit more,
which should result in some showers developing over the mountains.

The threat of showers over the western washington interior
lowlands looks rather slight, and precipitation that does occur
will be mostly light. Showers should mostly dissipate after sunset
as the air mass stabilizes.

The upper low will weaken further on Monday as it tracks slowly
southwest over the oregon offshore waters. The air mass will be
less moist and less unstable Monday, and the threat of showers
should be limited to the mountains and mainly during the afternoon
and evening. There could be considerable cloudiness during the
morning, but at least over the interior lowlands it should give
way to some afternoon sunshine.

A few days ago models showed a weak ridge building over the
pacific northwest Monday and Tuesday, then just some ridging on
Tuesday, and now it looks more like it will amount to just the
absence of a trough. Tuesday still looks like a dry day though,
and it should be mostly sunny across most all of the forecast
area. Mcdonnal

Long term Here is the long term section from the early morning
forecast discussion -- southerly flow will start to bring
moisture into the region Wednesday. Precipitation will begin in
the mountains, then become more widespread during the day. The
forecast has likely pops now, but rain is looking more certain. A
deep surface low is forecast by models to move north just off the
coast Wednesday night. By Thursday there will be a strong
southerly gradient over the area. The forecast has lots of windy
and breezy wording Thursday. The gradient currently does not
appear strong enough for high wind, though some wind advisories
might be needed.

After the surface low moves away, an upper trough will move toward
washington Friday, and move through the area Saturday. This appears
cold with heights in the low 530s. The snow level could fall to as
low as 1000 feet by Friday. More vigorous showers could bring
local snow to the lowlands. Burke

Aviation A surface and upper level low over the washington
coastal waters will drift very slowly southwestward into the
oregon offshore waters by Monday. Light flow aloft, mainly out of
the southeast today and variable on Monday. The air mass is
somewhat moist and weakly unstable.

Conditions are on the lower end ofVFR most areas this morning
with areas of MVFR and local ifr conditions in lower ceilings
occurring from around kbvs into the san juan islands. Area radars
show showers rotating around the low to the west of the area with
showers most concentrated over the coastal waters and on the
immediate coastline from about 20n khqm southward. Only isolated
light showers are seen over the higher terrain east of kolm.

Expect shower activity to increase somewhat during the late
afternoon and evening hours over the higher terrain. Isolated
light showers are possible elsewhere, but the chances will be low
enough (generally less than 30 percent) to only mention a vcsh at
the inland terminals kpae southward. After 18z,VFR conditions
are expected at all of the terminals, though brief MVFR ceilings
are possible around the light shower activity.

Showers will diminish after sunset and as the low moves southwest
of the region. Patches of MVFR are possible during the morning
hours on Monday after some radiational cooling overnight, and
lower ifr stratus with some 1-2sm br is possible in the kolm area
early Monday morning. Albrecht
ksea... Lower endVFR conditions with ceilings around 035 will
improve to sct035 bkn050 after about 18z. A few showers may get
close to the terminal as they wrap around the offshore low
pressure system, but it is rather unlikely that any showers will
actually reach the terminal area. Will throw in a vcsh group for
the period 20z-02z to cover this. Expect s-sw winds 5-9 kt this
afternoon and light SE winds tonight and Monday morning. Albrecht

Marine A weak surface low over the outer portions of the
washington coastal waters will drift slowly southwestward into the
oregon offshore waters on Monday. Winds will be generally light
offshore this morning with the weak low nearby, and only weak
onshore flow is expected this afternoon and evening with weak
daytime heating in the interior.

Onshore flow is expected to increase Monday afternoon and
evening. Small craft advisory westerlies are likely in the strait
Monday evening. Onshore flow may also be strong enough for
advisories Tuesday evening.

A weather system will affect the area Wednesday as a low center
moves north along the coast. Winds will turn approach small craft
advisory criteria at times. After the low moves north, strong
southerly flow Thursday could bring gales. Albrecht chb

Hydrology River flooding is not expected in the next 7 days.

Sew watches warnings advisories
Wa... None.

Pz... None.

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NEAW1 - 9443090 - Neah Bay, WA 19 mi43 min 1019 hPa
46087 - Neah Bay, WA (Traffic Separation Lighted Buoy) 27 mi41 min E 9.7 G 12 45°F 48°F3 ft1018.7 hPa (+1.4)41°F
LAPW1 - 9442396 - La Push, WA 36 mi55 min E 4.1 G 6 38°F 42°F1019.1 hPa
PTAW1 - 9444090 - Port Angeles, WA 45 mi55 min 4.1 G 5.1 43°F 47°F1019.2 hPa
DESW1 - Destruction Island, WA 48 mi31 min 43°F 1019 hPa (+1.2)

Wind History for Neah Bay, WA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Quillayute, Quillayute State Airport, WA31 mi38 minENE 310.00 miA Few Clouds36°F36°F100%1018.9 hPa

Wind History from UIL (wind in knots)
Last 24hrE4CalmS3SW7W6SW7W9SW9W7SW6SW4SW4CalmE3CalmCalmE3CalmCalmCalmNE4NE3E3NE3
1 day agoE4CalmE3CalmW9W8W8W7SW6W6W4W3CalmCalmE3CalmCalmCalmE4CalmCalmCalmE4Calm
2 days agoE6E4NE9N5NE9E5SW9SW7W9W6W4NW3N5N6N7N8N8E3E3E5E5N4CalmCalm

Tide / Current Tables for Sekiu, Washington
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Sun -- 02:44 AM PDT     4.24 meters High Tide
Sun -- 07:23 AM PDT     Sunrise
Sun -- 08:19 AM PDT     Moonrise
Sun -- 08:52 AM PDT     2.62 meters Low Tide
Sun -- 02:42 PM PDT     4.22 meters High Tide
Sun -- 07:27 PM PDT     Sunset
Sun -- 08:56 PM PDT     Moonset
Sun -- 09:00 PM PDT     2.42 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Strait of Juan de Fuca Entrance, Washington Current
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Strait of Juan de Fuca Entrance
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Sun -- 01:02 AM PDT     0.00 knots Slack
Sun -- 03:25 AM PDT     0.80 knots Max Flood
Sun -- 05:48 AM PDT     -0.00 knots Slack
Sun -- 07:25 AM PDT     Sunrise
Sun -- 08:20 AM PDT     Moonrise
Sun -- 09:39 AM PDT     -1.70 knots Max Ebb
Sun -- 01:38 PM PDT     0.00 knots Slack
Sun -- 03:45 PM PDT     0.62 knots Max Flood
Sun -- 05:52 PM PDT     -0.00 knots Slack
Sun -- 07:28 PM PDT     Sunset
Sun -- 08:57 PM PDT     Moonset
Sun -- 09:48 PM PDT     -1.66 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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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 (11,2,3,4)
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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 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 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.