Friday, August18, 2017

Marine Weather and Tides
Cedar Mill, OR

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:15AMSunset 8:14PM Friday August 18, 2017 11:03 AM PDT (18:03 UTC) Moonrise 1:45AMMoonset 5:06PM Illumination 13% Phase: Waning Crescent; Moon at 26 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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PZZ210 Columbia River Bar- 852 Am Pdt Fri Aug 18 2017
.small craft advisory for rough columbia river bar in effect late tonight...
In the main channel..Combined seas 4 to 5 ft today and tonight. However, seas will temporarily build to 6 or 7 ft during the ebb around 3 pm this afternoon, and to 8 or 9 ft with breakers during the strong ebb around 315 am tonight.
PZZ200 852 Am Pdt Fri Aug 18 2017
Synopsis for southern washington and northern oregon coast.. High pres will persist over the coastal waters through early next week with thermal low pres mainly over nw ca which will maintain northerly winds along the coast, strongest in the central oregon waters.

7 Day Forecast for Marine Location Near Cedar Mill, OR
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location: 45.58, -122.77     debug

Area Discussion for - Portland, OR
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Fxus66 kpqr 181606
area forecast discussion
national weather service portland or
906 am pdt Fri aug 18 2017

Synopsis Onshore winds continue the next several days. Slight
variations of the upper level pressure pattern will result in slight
variations in how expansive nighttime morning clouds will be through
early next week. The clouds should clear in the afternoons with
temperatures remaining near or above the seasonal normals. An upper
level ridge is expected early next week for less clouds and slightly
warmer temperatures.

Short term Today through Sunday night... Satellite imagery shows
cloudy skies over the SW washington and NW oregon coast, the willapa
hills, and parts of the SW washington cascade foothills and north
willamette valley this morning. Otherwise the skies are clear in most
areas of NW oregon. Today's weather will be near the seasonal normal
with temperatures peaking in the mid 60s for the coast and low 80s
for the willamette valley.

A weak upper level trough will move over the pacific NW late tonight
and Saturday morning for an increase of clouds across the region. Am
fairly confident that the north willamette valley will be cloudy
Saturday morning as well as the south washington and north oregon
cascade foothills. Am less confident that the low clouds will make it
to the central and south willamette valley. Clearing Saturday
afternoon will allow for near normal afternoon temperatures (inland
low 80s).

There will be little change Saturday night and Sunday as another weak
upper level trough moves over the area. ~tj

Long term Monday through Thursday: the numerical weather models
are showing slight variations in the upper level pattern and
low-level winds that is challenging the forecast confidence for
Monday's eclipse forecast. A weak upper level shortwave trough and a
decaying nearby front will likely bring clouds to the north coast and
the lower columbia river valley near scapoose and kelso. The
forecast confidence for those areas seeing clouds is fairly high.

There will also likely be clouds for the north willamette valley
including the portland metro area, but the extent and timing of these
clouds are less certain. There is a possibility though that these
clouds will not clear in time for the eclipse. Also think the sw
washington and north oregon cascade foothills will have some clouds
near the eclipse time, and have increased sky cover for these areas.

With the low-level moisture increasing from a potential nearby
decaying front, there is decreased forecast confidence of clear skies
for the central willamette valley including the salem area. Low
clouds creeping into the central willamette valley is not out of the
question, and have increased the sky cover just a tad, but have kept
it below 15% which translates to mostly clear skies. The central
oregon coast near new port and lincoln city still have the potential
for partial clearing Monday morning with NE winds just above the
surface. The bottom message here is that areas east of the cascades
have the best chance for having clear skies for viewing the eclipse.

Temperatures will be slightly warmer Monday afternoon as an upper
level ridge moves over the area temperatures in the willamette valley
may reach into the upper 80s. Of course if more clouds form in the
morning, these temperatures will be adjusted cooler.

An upper level trough approaches Monday night and Tuesday from the nw
enhancing the upper ridge over the region. Meanwhile an upper low
settles over central california. This will result in above normal
afternoon temperatures with possibly some cascade showers in the
afternoons. The trough will move through Wednesday and Thursday and
possibly bring a surface cold front with it. Cooler temperatures with
increasing chances for rain is therefore expected late next week. ~tj

Aviation Expect predominately MVFR CIGS along the north coast
this morning. The central coast looks to remainVFR this morning,
but could see brief periods of localized ifr fog through around
17z. Conditions along the north coast may briefly improve toVFR
this afternoon but that is not certain. The remains of a weak
frontal boundary will fuel another surge of stratus along the
coast tonight and Saturday morning and inland later tonight and
Saturday for high ifr to low MVFR along the coast and lower MVFR
inland in a good part of the willamette valley.

Kpdx and approaches... PredominatelyVFR today and this evening
with just briefly a few stratus near 1200 ft this morning. Look
for lower MVFR CIGS again after 08z tonight. Pt

Marine Expect a rather persistent pattern through early next
week with high pres over the coastal waters and thermal low pres
over NW california and SW oregon. This will maintain northerly
winds, with gustier winds in afternoon evenings, primarily to
south of newport. A SCA for winds is now in effect from this
afternoon through Sat night for the central waters. The winds may
ease a bit Sun and Sun night then increase again Mon afternoon.

Seas will generally be around 5 to 6 ft through the period, but
may build to around 7 or 8 ft at times to south of newport with
the stronger north winds. Pt

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds from 3 pm this afternoon to 5 am
pdt Sunday for coastal waters from cascade head or to
florence or out 60 nm.

Small craft advisory for rough columbia river bar from 2 am to
5 am pdt Saturday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 38 mi46 min 71°F1022.6 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 61 mi46 min 51°F1022.9 hPa
ASTO3 - 9439040 - Astoria, OR 68 mi46 min S 1.9 G 5.1 60°F 71°F1022.9 hPa

Wind History for Longview, WA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pearson Airfield, WA6 mi71 minVar 610.00 miPartly Cloudy66°F55°F68%1022 hPa
Portland, Portland International Airport, OR9 mi71 minN 310.00 miMostly Cloudy64°F54°F70%1022.3 hPa
Portland-Hillsboro Airport, OR10 mi71 minVar 310.00 miFair66°F54°F65%1021.9 hPa
Scappoose Industrial Airpark, OR14 mi71 minENE 510.00 miFair67°F53°F61%1021.9 hPa
Portland, Portland-Troutdale Airport, OR20 mi71 minSW 510.00 miOvercast61°F54°F78%1022.3 hPa
Aurora State Airport, OR23 mi71 minN 610.00 miA Few Clouds68°F52°F57%1022.2 hPa

Wind History from VUO (wind in knots)
Last 24hr3NW6W5W8W10
1 day agoNW7W7NW75NW7NW7NW9N9
2 days agoN3W936

Tide / Current Tables for St. Johns, Willamette River, Oregon - IGNORE HEIGHTS
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St. Johns
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

Fri -- 02:45 AM PDT     Moonrise
Fri -- 03:22 AM PDT     8.41 feet High Tide
Fri -- 06:15 AM PDT     Sunrise
Fri -- 12:58 PM PDT     -0.66 feet Low Tide
Fri -- 05:00 PM PDT     6.66 feet High Tide
Fri -- 06:06 PM PDT     Moonset
Fri -- 08:13 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

Fri -- 02:44 AM PDT     Moonrise
Fri -- 03:59 AM PDT     8.41 feet High Tide
Fri -- 06:15 AM PDT     Sunrise
Fri -- 01:10 PM PDT     -0.66 feet Low Tide
Fri -- 05:37 PM PDT     6.66 feet High Tide
Fri -- 06:05 PM PDT     Moonset
Fri -- 08:12 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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Weather Map
IR Satellite Image from GEOS

GOES Local Image of PacificNorthwest    EDIT

Wind Forecast for Portland, OR (14,3,4,5)
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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.