Sunday, June25, 2017 L-36.com


Marine Weather and Tides
Felida, WA

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 5:20AMSunset 9:06PM Sunday June 25, 2017 1:53 AM PDT (08:53 UTC) Moonrise 6:22AMMoonset 9:33PM Illumination 2% 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- 844 Pm Pdt Sat Jun 24 2017
In the main channel..Combined seas 2 to 3 ft through Sunday. However, seas will temporarily build to near 6 ft during the very strong ebb around 7 am Sunday and to near 4 ft during the ebb around 745 pm Sunday.
PZZ200 844 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 Felida, WA
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location: 45.73, -122.75     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 250456 cca
afdpqr
area forecast discussion
national weather service portland or
955 pm pdt Sat jun 24 2017

Correction to remove old headlines from bottom of product
Synopsis High pressure over the pacific northwest will continue
the very hot temperatures across much of northwestern oregon and
southwestern washington Sunday. A southerly marine surge will be
working up the coast overnight. The marine push will extend inland
late Sunday bringing much cooler temps on Monday. There is a slight
chance for some high-based thunderstorms over the northern portions
of the CWA 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... A very strong upper level
ridge brought scorching heat to much of the cwa, breaking daily high
temp records for several locations. The airmass over the region is
very warm, with the 00z ksle sounding coming in with around 23 c at
850 mb. Offshore flow aided in the warm temps by helping to mix the
airmass. The thermal trough set up right along the coast earlier
today, allowing the east winds and high temps to reach all the way to
the coast.

Relief is on the way for portions of the CWA tonight. The thermal
trough has shifted and is now draped from the lane county cascades
and foothills up through the north oregon coast range. Offshore flow
will continue overnight into Sun morning for areas east of the trough
axis. For areas west of the trough, increasing onshore flow will
bring welcomed relief from cool marine air. A southerly surge will be
working its way up the coast overnight. Areas from around konp
southward are now showing southerly winds, and these winds will
gradually spread northward through the night. Satellite fog product
shows stratus nearing the central oregon coast in the last hr, and
think it will begin to spread onshore during the 06z-12z time period.

We are also starting to see signs of marine influence in the southern
willamette valley, where keug and kcvo have seen temps cool
considerably over the past couple of hrs and dewpoints are steadily
rising. Have dropped the coast range and southern willamette valley
out of the heat advisory for tomorrow, as this marine influence
should keeps temps quite a bit cooler than we saw today. The fcst
models suggest that offshore flow continues over the northern valley
into Sun morning, with the thermal trough moving over the region in
the afternoon. So expect areas from roughly ksle northward to see
temps near or even just above what we saw today. So will retain the
current heat advisory and excessive heat warning products for the
northern half of the CWA and the cascade foothills. 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. Pyle 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 06z
Monday. The main exception to this will be along the coast
where a southerly wind reversal will bring ifr conditions to konp
starting sometime between 12z-15z Sunday before transitioning to
MVFR conditions later on Sunday. Ifr conditions will move north
up the coast during the day Sunday and if they get to kast, it
would be around 00z-03z Monday.

Kpdx and approaches... High pressure and offshore flow will bring
vfr conditions through 06z Monday. Bowen 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 north to northeast winds across the
outer waters this 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. Bowen 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.

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.

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 28 mi54 min 63°F1013.2 hPa (-0.5)
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 63 mi54 min 49°F1012.9 hPa (+1.2)
ASTO3 - 9439040 - Astoria, OR 63 mi54 min ESE 2.9 G 4.1 72°F 66°F1012.3 hPa (-0.6)

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Scappoose Industrial Airpark, OR7 mi61 minW 410.00 miFair65°F55°F70%1012.2 hPa
Pearson Airfield, WA9 mi61 minN 010.00 miFair69°F59°F70%1012.1 hPa
Portland, Portland International Airport, OR11 mi61 minNNW 410.00 miFair72°F54°F53%1011.9 hPa
Portland-Hillsboro Airport, OR17 mi61 minN 010.00 miFair62°F55°F78%1011.8 hPa
Portland, Portland-Troutdale Airport, OR22 mi61 minE 1010.00 miFair81°F44°F27%1011.9 hPa

Wind History from SPB (wind in knots)
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Last 24hrCalmCalmN3CalmCalmCalmCalmN8N6N4CalmN5N4NE6E5E7NE5NE5N5NW3CalmW4W4W4
1 day agoNW8NW7N6N7N5N7N7N7N11N8N10N10N8N9N9N10N13
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Tide / Current Tables for Knapp Landing, Washington - IGNORE HEIGHTS
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Knapp Landing
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

Sun -- 02:58 AM PDT     2.19 feet Low Tide
Sun -- 05:22 AM PDT     Sunrise
Sun -- 06:46 AM PDT     9.74 feet High Tide
Sun -- 07:22 AM PDT     Moonrise
Sun -- 03:57 PM PDT     -1.89 feet Low Tide
Sun -- 08:20 PM PDT     7.91 feet High Tide
Sun -- 09:04 PM PDT     Sunset
Sun -- 10:32 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
43.12.42.23.56.499.79.286.34.42.50.8-0.6-1.6-1.9-0.52.65.87.87.87.26.2

Tide / Current Tables for Kelley Point, Oregon - IGNORE HEIGHTS
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Kelley Point
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

Sun -- 03:46 AM PDT     2.19 feet Low Tide
Sun -- 05:23 AM PDT     Sunrise
Sun -- 07:23 AM PDT     Moonrise
Sun -- 07:46 AM PDT     9.74 feet High Tide
Sun -- 04:45 PM PDT     -1.89 feet Low Tide
Sun -- 09:04 PM PDT     Sunset
Sun -- 09:20 PM PDT     7.91 feet High Tide
Sun -- 10:32 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
53.932.42.23.86.79.19.79.286.24.32.30.6-0.8-1.7-1.8-0.12.967.87.87.1

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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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.