Wednesday, August23, 2017 L-36.com


Marine Weather and Tides
Vancouver, WA

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 6:21AMSunset 8:04PM Wednesday August 23, 2017 1:19 AM PDT (08:19 UTC) Moonrise 7:29AMMoonset 8:20PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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- 856 Pm Pdt Tue Aug 22 2017
In the main channel..Combined seas 3 to 5 ft tonight and Wednesday. However, seas temporarily building to 7 ft with breakers possible during the strong ebb around 630 am Wednesday and to 6 ft during the ebb around 7 pm Wednesday.
PZZ200 856 Pm Pdt Tue Aug 22 2017
Synopsis for southern washington and northern oregon coast.. High pres will continue over the ne pac tonight, with thermal low pres over the southern oregon coast. High pres will weaken Wed as a decaying front moves across the waters, then rapidly rebuild Wed night. Thermal low pres strengthens Fri and Sat.

7 Day Forecast for Marine Location Near Vancouver, WA
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location: 45.6, -122.62     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 230427
afdpqr
area forecast discussion
national weather service portland or
927 pm pdt Tue aug 22 2017

Synopsis An upper ridge that spread into the pacific northwest
Monday will slowly move east tonight and Wednesday as a system slowly
approaches the b.C and pacific northwest coast. The marine layer will
extend farther inland Wednesday, resulting in some cooling. There is
a slight chance of a shower in the oregon cascades tonight and early
Wednesday. A weak front will move through the pacific northwest
Wednesday night and Thursday, bringing significant cooling and a few
showers. Friday will see drying and warming for a typical summer day,
then look for significant warming this weekend into early next week.

Short term Tonight through Friday... Satellite imagery this evening
shows marine stratus well entrenched along the coast with a couple of
sites reporting lowered visibility and even some light rain. With
that in mind, added patchy light drizzle and patchy fog to the
forecast for the coast through tonight. Also adjusted cloud cover to
reflect current trends as well as a marine push further inland
tonight. Will also see more of a southwest push that will bring
clouds into the southern willamette valley. Radar trends show shower
and thunderstorm activity beginning to shift a little bit north and
west, as expected, so kept some slight chance pops along the cascade
crest for later tonight. Bowen
the remainder of the short term forecast discussion is unchanged...

Wednesday will see greater coverage of low clouds inland in the
morning when compared to today, coming inland along the columbia
river as well as the southern coastal gap towards and past eugene.

Even though it will burn off inland in the afternoon, this will cool
temps back down closer to seasonal normals on Wednesday. Increasing
southwest flow aloft will ensure that any convection will be east of
our cascades in the afternoon.

Wednesday night and Thursday will see the approaching offshore system
move through the pacific northwest. This will bring cloudy conditions
to the area with a few showers, as well as cooling of afternoon
temps. Thursday should see 60s at the coast and 70s inland.

Westerly flow spreads in Thursday night and Friday, with morning
clouds especially north Friday giving way to sunshine in the
afternoon. Temps will be closer to seasonal normals as Friday is a
very typical summer day. Tolleson

Long term No changes. Previous discussion follows... Friday night
through Tuesday... Shortwave ridging will build over the pacific
northwest and bring warming temperatures through the weekend. Several
days of 90f+ temperatures appear increasingly likely for the
willamette valley with Sunday and Monday appearing the hottest. While
some models suggest even hotter temperatures are possible on these
days, most generally keep temperatures closer to reasonable levels so
the forecast was trended towards this idea being the most likely to
occur.

This upcoming hot stretch will likely produce a multi-day period of
critical fire weather conditions as well. East to northeasterly winds
should allow smoke to filter back into the region Sunday and Monday.

The flow may turn a little more southerly aloft as the ridge begins
to break down late in the weekend or more likely early next week so
will need to monitor for the possibility of thunderstorms even though
models at this time do not really show it despite the synoptic
pattern appearing somewhat favorable. Neuman tolleson

Aviation Ifr or lower fog and stratus has returned to the
coast and will persist overnight through at least 18z wed.

Across the interior, expect continued smoke to occasional form
vfr CIGS this evening through early tonight. Onshore marine push
will bring lower MVFR CIGS into much of the willamette valley
between 12-14z through around 18z when lifting and scattering
will bring a return ofVFR conditions.

Kpdx and approaches...VFR through late tonight with occasional
cigs due to smoke. A period of MVFR stratus around 2000 ft will
arrive by 12z and will continue through 18z, with a return toVFR
conditions thereafter. cullen

Marine Conditions remain relatively benign across the coastal
waters, with winds less than 15 kt and seas around 5 ft. A weak
front crosses the waters on Wednesday, but the primary impact
will be a slight shift to west winds, with speeds remaining below
advisory thresholds. High pressure builds across the waters
starting late Wednesday night, and thermal low pressure
strengthens again later in the week. This will bring a return of
advisory strength winds to the southern zones by Friday and
across the northern coastal waters over the weekend. Seas will
generally remain 4 to 6 feet through the week, but may build to 7
feet and become rather steep at times this weekend when the
stronger winds develop. Cullen

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 39 mi49 min 70°F1018.2 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 69 mi49 min 49°F1019.1 hPa
ASTO3 - 9439040 - Astoria, OR 74 mi49 min W 5.1 G 5.1 61°F 71°F1018.5 hPa

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portland, Portland International Airport, OR1 mi26 minNNW 310.00 miFair66°F59°F78%1017.2 hPa
Pearson Airfield, WA3 mi26 minN 010.00 miFair66°F60°F81%1017.2 hPa
Portland, Portland-Troutdale Airport, OR12 mi26 minN 010.00 miFair67°F59°F76%1017.2 hPa
Scappoose Industrial Airpark, OR17 mi26 minN 610.00 miFair65°F57°F78%1016.9 hPa
Portland-Hillsboro Airport, OR18 mi26 minWNW 310.00 miFair63°F0°F%1016.8 hPa

Wind History from PDX (wind in knots)
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Last 24hrCalmCalmE3E5E3SE3E3E4E3NE4N5E3N6NW6Calm4NW85N6N4N4NW5NW5NW3
1 day agoNW5NW6NW53NW3NW3NW3CalmNW5N5NW7W10W11NW9NW10NW8
G14
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2 days agoNW9NW4NW53NW54NW5N53CalmN5N5N5N7NW10NW9NW9NW95N9
G15
NW10NW9NW7N3

Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS
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Vancouver
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

Wed -- 04:35 AM PDT     0.82 feet Low Tide
Wed -- 06:21 AM PDT     Sunrise
Wed -- 08:28 AM PDT     Moonrise
Wed -- 08:35 AM PDT     8.61 feet High Tide
Wed -- 05:06 PM PDT     -0.96 feet Low Tide
Wed -- 08:04 PM PDT     Sunset
Wed -- 09:20 PM PDT     Moonset
Wed -- 09:27 PM PDT     8.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.342.71.60.913.168.28.57.96.75.23.51.90.5-0.5-102.85.97.98.17.4

Tide / Current Tables for Portland, Willamette River, Oregon - IGNORE HEIGHTS
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Portland
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

Wed -- 04:34 AM PDT     0.82 feet Low Tide
Wed -- 06:21 AM PDT     Sunrise
Wed -- 07:55 AM PDT     8.61 feet High Tide
Wed -- 08:28 AM PDT     Moonrise
Wed -- 05:05 PM PDT     -0.96 feet Low Tide
Wed -- 08:03 PM PDT     Sunset
Wed -- 08:47 PM PDT     8.17 feet High Tide
Wed -- 09:20 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.83.62.41.50.91.13.97.28.68.37.464.531.50.3-0.6-10.43.97.28.27.86.9

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Portland, OR (4,6,7,8)
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Ground Weather Radar Station Portland, OR
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weather_mapweather_map weather_map

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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.