Saturday, May26, 2018

Marine Weather and Tides
Carson, 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 5:26AMSunset 8:47PM Friday May 25, 2018 9:21 PM PDT (04:21 UTC) Moonrise 3:42PMMoonset 2:52AM Illumination 86% Phase: Waxing Gibbous; Moon at 11 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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7 Day Forecast for Marine Location Near Carson, WA
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location: 45.8, -121.91     debug

Area Discussion for - Portland, OR
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Fxus66 kpqr 252121
area forecast discussion
national weather service portland or
221 pm pdt Fri may 25 2018

Synopsis A low over northern california will continue to spread
showers across the oregon cascades this afternoon and evening,
possibly affecting the eastern edge of the willamette valley. Onshore
flow will continue through Saturday as a weak system approaches and
then passes by to the north Saturday, with a dissipating front moving
through, possibly producing some drizzle or light showers late
tonight and Saturday. A return to dry weather and slightly above
normal daytime temperatures can be expected Sunday into early next
week with a more seasonal night and morning clouds regime. The next
weak upper trough is expected around the middle of next week with
increased onshore flow, cooler temperatures, and spotty

Short term Tonight through Monday... Southwest washington and
northwest oregon remains in between two systems. The first system is
an upper low now over northern california that has been the main
driver of our recent showers and thunderstorms over the cascades.

This system is currently spreading showers under a deformation zone
north of the low. National weather service doppler radar shows that
the main precipitation is in southwest oregon similar to the models,
but radar and web cams show the band of showers extending north along
the cascades to near or just north of mount jefferson. It is possible
a few of the showers may drift off into the eastern willamette valley
before dissipating. This is in line with recent model forecasts. The
models still show it will be stable in our forecast area with any
thunder in central oregon and eastward, and with the layered clouds
on satellite imagery, this still seems reasonable as well.

Otherwise west of the cascades should be mostly dry tonight. Clouds
have thinned in the far western sections of the forecast area but
will stay rather cloudy closer to the cascades.

The low to our south will move slowly eastward tonight and Saturday
as a weak system moves through to our north tonight and Saturday. The
models show a dissipating frontal boundary with this northern system
moving into and through our forecast area, and this is likely the
reason why the models are producing some light drizzle or showers
mainly near the coast and inland to around kelso late tonight and
then over much of the inland areas Saturday. QPF will be light and
pops will be kept low, though we have some low chance pops in some
areas. This will also keep clouds around through the day Saturday,
especially in the inland areas.

A positive tilt upper ridge builds in Saturday night and Sunday,
transitioning the weather to a more typical or seasonal night and
morning clouds afternoon sunshine regime. Temperatures on Sunday will
be rising back into the mid 70s. Not much change on Monday as
compared to Sunday, though the models do start to lower the 500 mb
heights and increase the onshore flow a bit later in the day ahead of
the next approaching offshore upper trough. Suspect the main cooling
will be Monday night and Tuesday. Tolleson

Long term Monday night through Friday... The models show an
approaching and digging upper trough off the coast Monday night and
Tuesday, with a short wave that swings through Tuesday night and
early Wednesday. The upper trough remains in the region Thursday and
Friday through the GFS model is stronger than on the ecmwf. The main
effect is that it will be cooler, cloudier, with possibly some spotty
light precipitation especially north, though details are uncertain
later next week. Tolleson

Aviation MostlyVFR conditions across the area this afternoon.

Scattering clouds along and west of a k6s2-kkls line have improved
conditions considerably. However, moisture and associated cloud field
continues to rotate into the eastern and central portions of the
forecast area with lowVFR CIGS persisting. Meanwhile, gusty winds
across the northern half of the forecast area will develop and
persist through the late afternoon early evening. Stronger onshore
flow tonight should again bring a return to widespread MVFR cigs
first to the coast and later across the interior.

Kpdx and approaches...VFR CIGS this afternoon with some scattering
possible late this afternoon. Gusty west winds 23z-04z with gusts to
15-20 kt. Expect a return of MVFR CIGS late overnight through early
Saturday as moist onshore flow continues. Cullen

Marine High pressure remains over the northeast pacific with lower
pressure over northern california. This will maintain north to
northwest winds across the coastal waters through the weekend and
into the start of next week. Gusts should remain generally between 10
and 20 kt with seas holding between 5 and 7 feet. Buoy 46050 recorded
gusts meeting advisory criteria for several hours, but these have
largely come to an end. Therefore, have cancelled the advisory a few
hours early, though a few occasional gusts around 20-25 kt cannot be
entirely ruled out. Northerly winds will likely increase during the
early to middle part of next week (perhaps as early as late Sunday
night or Monday), which will likely create steep and hazardous seas.


Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 59 mi52 min 59°F1018.7 hPa

Wind History for Longview, WA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from CZK (wind in knots)
Last 24hr24------------------------SW12
1 day ago53------------------------322SW632SE2E21S2
2 days ago----------------------------1214334434

Tide / Current Tables for Ellsworth, Washington - IGNORE HEIGHTS
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Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the

Sat -- 01:27 AM PDT     1.16 feet Low Tide
Sat -- 04:21 AM PDT     Moonset
Sat -- 05:28 AM PDT     Sunrise
Sat -- 05:51 AM PDT     8.94 feet High Tide
Sat -- 02:22 PM PDT     0.21 feet Low Tide
Sat -- 05:50 PM PDT     Moonrise
Sat -- 06:31 PM PDT     7.27 feet High Tide
Sat -- 08:46 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS
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Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the

Sat -- 01:02 AM PDT     1.16 feet Low Tide
Sat -- 04:22 AM PDT     Moonset
Sat -- 05:25 AM PDT     8.94 feet High Tide
Sat -- 05:28 AM PDT     Sunrise
Sat -- 01:57 PM PDT     0.21 feet Low Tide
Sat -- 05:50 PM PDT     Moonrise
Sat -- 06:05 PM PDT     7.27 feet High Tide
Sat -- 08:47 PM PDT     Sunset
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 Portland, OR (0,6,7,8)
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Ground Weather Radar Station Portland, OR
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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 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.