Thursday, April19, 2018

Marine Weather and Tides
Neah Bay, 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 6:13AMSunset 8:18PM Thursday April 19, 2018 2:39 AM PDT (09:39 UTC) Moonrise 7:59AMMoonset 11:47PM Illumination 16% 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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PZZ130 West Entrance U.s. Waters Strait Of Juan De Fuca- 843 Pm Pdt Wed Apr 18 2018
Tonight..NW wind to 10 kt in the evening becoming light. Wind waves 1 ft or less. W swell 5 ft at 13 seconds.
Thu..Light wind becoming W 5 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 6 ft at 12 seconds.
Thu night..W wind 10 to 20 kt becoming sw to 10 kt after midnight. Wind waves 1 to 3 ft subsiding to 1 ft or less after midnight. W swell 5 ft at 11 seconds. A slight chance of rain after midnight.
Fri..S wind to 10 kt rising to 10 to 20 kt in the afternoon. Wind waves 1 ft or less building to 1 to 3 ft in the afternoon. W swell 6 ft at 13 seconds.
Fri night..S wind 10 to 20 kt becoming W 15 to 25 kt after midnight. Wind waves 2 to 4 ft. W swell 7 ft at 13 seconds building to 9 ft at 14 seconds after midnight.
Sat..W wind 15 to 25 kt easing to 5 to 15 kt in the afternoon. Wind waves 2 to 4 ft subsiding to 2 ft or less in the afternoon. W swell 10 ft at 11 seconds.
Sat night..W wind 5 to 15 kt becoming nw to 10 kt after midnight. Wind waves 2 ft or less. W swell 8 ft at 14 seconds.
Sun..N wind to 10 kt becoming nw. Wind waves 1 ft or less. W swell 7 ft.
Mon..E wind to 10 kt becoming nw. Wind waves 1 ft or less. W swell 5 ft.
PZZ100 843 Pm Pdt Wed Apr 18 2018
Synopsis for the northern and central washington coastal and inland waters..Onshore flow will develop over the waters Thursday as a ridge of high pressure offshore strengthens and moves toward the coastal waters. This ridge will move inland Friday...followed by a cold front Friday evening. Strong onshore flow is expected later Friday night and Saturday behind the front as high pressure rebuilds over the offshore waters. Onshore flow will weaken Sunday and Monday.

7 Day Forecast for Marine Location Near Neah Bay, WA
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location: 49.53, -124.61     debug

Area Discussion for - Seattle, WA
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Fxus66 ksew 190234
area forecast discussion
national weather service seattle wa
735 pm pdt Wed apr 18 2018

Synopsis An upper ridge will bring dry mild weather Thursday
into Friday. A frontal system will move quickly across the area
Friday night, followed by showers and Sun breaks on Saturday. A
stronger upper ridge will bring another stretch of dry mild
weather Sunday through Wednesday.

Short term Current radar is a reflection of the first weeks of
spring thus far... Rain just keeps finding a way to hang on even
longer. To be fair... Conditions are pretty quire over much of w
wa... But showers still linger along the king snohomish county line
and another blob of showers over portions of thurston... Pierce and
lewis counties.

Models continue to show that this activity is expected to fizzle out
by midnight tonight as ridging over the pacific starts to exert its
influence over the area. This ridge will keep conditions dry for
Thursday and most of Friday with afternoon high temperatures still
expected to reach into the lower 60s. The next chance for rain comes
in with a fast moving front expected to hit the coast Friday night
and work its way eastward during the overnight hours and into
Saturday morning. The front moves through pretty quickly... But
moisture with the associated upper level trough... Remaining mostly
north of the border... Will keep the prospect of showers in the
forecast into Saturday afternoon before tapering off Saturday night.

All in all... Inherited forecast is in good shape and covers
lingering showers. No evening update needed.

Long term From previous discussion... High pressure aloft will
produce a dry and mild spell Sunday through Wednesday. Highs will be
near normal Sunday but then warm several degrees into the 60s Monday
and remain in the 60s into the middle of the week. There is a little
uncertainty with the dry forecast by Tuesday when models show a weak
upper trough crossing the area but the consensus is dry for now. The
gfs shows a weather system reaching the area Wednesday with zonal
flow aloft but the ECMWF is dry with an upper ridge and is preferred
for now. Schneider

Aviation A weak upper level trough over the pacific northwest
will weaken tonight. An upper ridge offshore will strengthen and
move eastward into western washington later Thursday into Thursday
night. Light flow aloft this evening will become northwesterly
later tonight through Thursday as the offshore ridge strengthens
and approaches the region. At the surface, a ridge of high
pressure will strengthen over the offshore waters tonight and

Even though some showers linger over portions of W wa... Conditions
expected to remainVFR this evening. As the air mass stabilizes
later this evening... Mid-level clouds expected to dissipate leaving
only scattered cirrus or clear skies later tonight through Thursday.

Any fog or stratus early Thursday morning will be limited to favored
river valleys, mainly from about kshn-kolm southward. Smr albrecht
ksea...VFR conditions will persist. Showers to the north and south
of the terminal not expected to move over the terminal... However may
allow for bkn mid-level clouds at times this evening until said
showers dissipate. After midnight... Generally expected either sct
high clouds or possibly even clear skies. North to northeasterly
winds 5-7 kt into Thursday morning before returning to NW 5-8 kt
by noon Thursday. Smr albrecht

Marine A ridge of high pressure will strengthen over the
offshore waters tonight and Thursday then move slowly eastward
into the interior of western washington on Friday. A combination
of the strengthening offshore ridge and differential heating
between the interior and coastal areas will result in the
development of small craft advisory conditions over the eastern
two thirds of the strait of juan de fuca Thursday afternoon into
Thursday night. Models have been persistent in these wind speeds and
as such... Inherited headline looks good.

A moderate cold front will move through the waters Friday
evening. Small craft advisory south winds are expected to develop
over the coastal waters and at the entrances to the strait ahead
of the front. Strong westerly flow, possibly to gale strength,
will develop behind the front late Friday night across portions of
the strait of juan de fuca. Will wait and see what 00z model
solutions look like before determining the need for any additional

Onshore flow will slowly weaken later Saturday through Monday.

Smr albrecht

Sew watches warnings advisories
Wa... None.

Pz... Small craft advisory from 5 pm Thursday to 2 am pdt Friday for
east entrance u.S. Waters strait of juan de fuca.

Small craft advisory from noon Thursday to 2 am pdt Friday for
central u.S. Waters strait of juan de fuca.

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46131 - Sentry Shoal 33 mi100 min NNW 3.9 G 5.8 48°F 49°F1023.4 hPa (+0.5)
46146 - Halibut Bank 48 mi100 min NNW 9.7 G 12 48°F 49°F1023.3 hPa

Wind History for Neah Bay, WA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Eastsound, Orcas Island Airport, WA107 mi45 minN 010.00 miOvercast43°F39°F87%1023 hPa

Wind History from ORS (wind in knots)
Last 24hrS4CalmCalmCalmCalmCalmN3Calm4N5NW6NW5NW5NW6N6NW5CalmCalmCalmCalmCalmCalmCalmS3
1 day agoS6S7
2 days agoCalmSW4SW3CalmSW3SW3CalmCalmSW4CalmS4S8S6S7S6S7S7

Tide / Current Tables for Pocahontas Point, British Columbia
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Pocahontas Point
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Thu -- 02:57 AM PDT     3.41 meters High Tide
Thu -- 06:20 AM PDT     Sunrise
Thu -- 09:02 AM PDT     Moonrise
Thu -- 09:35 AM PDT     0.21 meters Low Tide
Thu -- 04:01 PM PDT     2.82 meters High Tide
Thu -- 08:17 PM PDT     Sunset
Thu -- 09:31 PM PDT     1.12 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Brooksby Point, British Columbia
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Brooksby Point
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Thu -- 03:03 AM PDT     3.39 meters High Tide
Thu -- 06:20 AM PDT     Sunrise
Thu -- 09:02 AM PDT     Moonrise
Thu -- 09:41 AM PDT     0.23 meters Low Tide
Thu -- 04:10 PM PDT     2.76 meters High Tide
Thu -- 08:18 PM PDT     Sunset
Thu -- 09:36 PM PDT     1.12 meters Low Tide
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Seattle, WA (5,6,7,8)
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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.