Saturday, June24, 2017 L-36.com


Marine Weather and Tides
Portland, OR

Version 3.4
What's New / NOTES
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 5:21AMSunset 9:05PM Saturday June 24, 2017 5:00 PM PDT (00:00 UTC) Moonrise 5:16AMMoonset 8:39PM Illumination 1% Phase: New Moon; 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- 221 Pm Pdt Sat Jun 24 2017
In the main channel..Combined seas 2 to 4 ft through Sunday. However, seas will temporarily build to near 5 ft during the ebb around 6 pm Saturday and to near 6 ft during the very strong ebb around 615 am Sunday.
PZZ200 221 Pm Pdt Sat Jun 24 2017
Synopsis for southern washington and northern oregon coast.. Thermal low pressure near the coast will turn into a weak low pressure offshore and allow a southerly wind reversal to spread northward across the waters tonight and Sunday. A return to a summer-like northerly wind pattern will occur early next week.

7 Day Forecast for Marine Location Near Portland, OR
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location: 45.53, -122.68     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 242232
afdpqr
area forecast discussion
national weather service portland or
332 pm pdt Sat jun 24 2017

Synopsis High pressure over the pacific northwest will bring
unseasonably hot, potentially record breaking temperatures across
much of northwestern oregon and southwestern washington Saturday and
Sunday. A marine push should result in cooler temperatures beginning
late Sunday and Monday. Dry northwesterly flow sets up next week
across the region, bringing more seasonable temperatures and a
pattern of morning clouds and afternoon sunshine.

Short term Tonight through Tuesday... Not much change in the
overall forecast in the short term, but some details to work out.

Current temps in the mid 90s in the interior valleys. Most of the
coastal areas range from the mid 80s on the central coast to around
90 at the north coast. the thermal trough is hanging just on the
coast this afternoon with northeasterly winds at the north coast
giving some downslope warming to some spots such as 95 at tillamook.

The thermal trough is a little inland at the central oregon coast
hence the slightly lower temperatures. the offshore flow weakens
tonight and turns onshore Sunday bringing relief to the coast, coast
range, and even the far southern portions of the willamette valley.

However the the north interior zones will see about the same
temperatures as today. will keep the heat advisories warning plans
unchanged. The advisories for the coast range and south willamette
valley zone end tonight, with the remainder of the interior lowlands
& cascade foothill zones ending Sunday night. The thermal low
pressure will shift east of the cascades Sunday night and result in
the entire forecast area cooling considerably by Monday.

As the upper ridge bringing the heat shifts east, a weak upper level
impulse lifting northeastward into northern california and oregon
Sunday night and Monday will help to destabilize the atmosphere is it
brushes our southern cwa. At this point, it appears there is a chance
of thunderstorms grazing primarily the lane and linn county cascades
as well as the central oregon coast and even the south half of the
interior lowlands. These will be elevated thunderstorms, so we'll
need watch for changes to the instability moisture to expand or cut
back on the thunderstorm coverage. Mh

Long term Tuesday night through Saturday... Low level onshore flow
will continue through much of the long term period. Models continue
to show a broad upper level trough moving across the forecast area
late Tuesday Wednesday which will bring an increase in cloud cover
along, with some patchy morning fog or drizzle on the north coast.

Expect much more seasonal temps on Wednesday afternoon. Upper level
ridging will start to build over the pac NW late next week which
will bring slightly warmer temps. The good news is that the ridge
will not be as strong next week which will prevent temps from
becoming outrageously hot. 64

Aviation High pressure and offshore flow will bring
predominantlyVFR conditions to most TAF sites through 00z
Monday. The main exception to this will be along the coast
where a southerly wind reversal will bring ifr conditions to konp
sometime between 04-08z Sunday before transitioning to MVFR
conditions later on Sunday.

Kpdx and approaches... High pressure and offshore flow will bring
vfr conditions through 00z Monday. Neuman

Marine High pressure over the northeast pacific will continue
well into next week. In the immediate short term, a weak low
pressure will move northward across the waters over the next 36
hours. This will result in gusty north to northeast winds across
the outer waters late this afternoon and evening before
southerly winds spread northward across all the waters tonight
and Sunday.

A summer-like northerly wind pattern then looks to return late
Monday or Tuesday and continue through much of next week. This
should result in northerly winds peaking generally each afternoon
and evening across the waters... With the strongest winds
generally occurring across the waters off the central oregon
coast. Neuman

Pqr watches warnings advisories
Or... Excessive heat warning until 9 pm pdt Sunday for western
columbia river gorge.

Heat advisory until 9 pm pdt Sunday for cascade foothills in
lane county-central columbia river gorge-central
willamette valley-greater portland metro area-lower
columbia-northern oregon cascade foothills.

Heat advisory until 9 pm pdt this evening for central coast
range of western oregon-coast range of northwest oregon-
south willamette valley.

Wa... Excessive heat warning until 9 pm pdt Sunday for western
columbia river gorge.

Heat advisory until 9 pm pdt Sunday for central columbia river
gorge-greater vancouver area-i-5 corridor in cowlitz
county-south washington cascade foothills.

Heat advisory until 9 pm pdt this evening for willapa hills.

Pz... Small craft advisory for winds until 11 pm pdt this evening for
waters from CAPE shoalwater wa to florence or from 10 to
60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 42 mi61 min 63°F1015 hPa (-2.1)
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 66 mi61 min 50°F1013.6 hPa (-1.4)
ASTO3 - 9439040 - Astoria, OR 74 mi61 min N 8 G 8.9 89°F 66°F1014.6 hPa (-1.6)

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Pearson Airfield, WA6 mi68 minENE 910.00 miFair97°F43°F16%1014.1 hPa
Portland, Portland International Airport, OR7 mi68 minE 1510.00 miFair97°F41°F14%1014 hPa
Portland-Hillsboro Airport, OR14 mi68 minNE 810.00 miFair96°F43°F16%1014.1 hPa
Portland, Portland-Troutdale Airport, OR15 mi68 minE 1110.00 miFair96°F44°F17%1014.1 hPa
Scappoose Industrial Airpark, OR19 mi68 minE 510.00 miFair96°F46°F18%1014.4 hPa
Aurora State Airport, OR20 mi68 minNNE 14 G 2110.00 miFair99°F45°F16%1013.7 hPa

Wind History from PDX (wind in knots)
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Last 24hrN8N10
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NW6N5W5W5W5W5W4W4W3CalmW3NW3NW3NW6W5NW8CalmE18
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1 day agoN9
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2 days agoNW14
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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

Sat -- 03:13 AM PDT     2.19 feet Low Tide
Sat -- 05:22 AM PDT     Sunrise
Sat -- 06:16 AM PDT     Moonrise
Sat -- 06:34 AM PDT     9.84 feet High Tide
Sat -- 04:17 PM PDT     -1.87 feet Low Tide
Sat -- 08:09 PM PDT     7.77 feet High Tide
Sat -- 09:03 PM PDT     Sunset
Sat -- 09:39 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
43.12.52.23.16.49.39.89.286.44.62.71.1-0.3-1.4-1.8-12.25.87.77.676

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

Sat -- 03:14 AM PDT     2.19 feet Low Tide
Sat -- 05:22 AM PDT     Sunrise
Sat -- 06:16 AM PDT     Moonrise
Sat -- 07:14 AM PDT     9.84 feet High Tide
Sat -- 04:18 PM PDT     -1.87 feet Low Tide
Sat -- 08:49 PM PDT     7.77 feet High Tide
Sat -- 09:03 PM PDT     Sunset
Sat -- 09:39 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.33.32.62.22.85.38.29.89.68.77.25.33.31.5-0.1-1.3-1.8-1.31.24.477.87.46.5

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 (20,4,5,8)
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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.