Thursday, August6, 2020
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Marine Weather and Tides
Philomath, OR

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:04AMSunset 8:32PM Thursday August 6, 2020 5:12 PM PDT (00:12 UTC) Moonrise 9:28PMMoonset 8:04AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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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PZZ255 Coastal Waters From Cascade Head To Florence Or Out 10 Nm- Waters From Cascade Head To Florence Or From 10 To 60 Nm- 231 Pm Pdt Thu Aug 6 2020
Tonight..N wind 5 to 10 kt. Wind waves N 2 ft at 4 seconds. NW swell 6 ft at 11 seconds.
Fri..N wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Wind waves N 2 ft at 4 seconds. NW swell 6 ft at 11 seconds.
Fri night..N wind 10 to 15 kt, easing to 5 to 10 kt after midnight. Wind waves N 2 ft at 4 seconds. NW swell 5 ft at 10 seconds.
Sat..N wind 10 to 15 kt with gusts to 20 kt, rising to 15 to 20 kt with gusts to 25 kt in the afternoon. Wind waves N 3 ft at 5 seconds. NW swell 6 ft at 10 seconds.
Sat night..N wind 20 to 25 kt with gusts to 30 kt. Wind waves N 5 ft at 7 seconds. NW swell 7 ft at 9 seconds.
Sun..N wind 20 to 25 kt. Wind waves 4 ft. NW swell 8 ft.
Sun night..N wind 20 to 25 kt. Wind waves 5 ft. NW swell 9 ft.
Mon..N wind 15 to 20 kt. Wind waves 3 ft. NW swell 7 ft.
Tue..N wind 10 to 15 kt. Wind waves 3 ft. NW swell 6 ft.
PZZ200 231 Pm Pdt Thu Aug 6 2020
Synopsis for the southern washington and northern oregon coast.. A weak front will brush by the northern waters on Friday. Otherwise, high pressure will rebuild across the waters through the weekend with thermal low pressure over the far south oregon coast. This will result in gusty northerly winds and periods of steep seas through much of the upcoming week.


7 Day Forecast for Marine Location Near Philomath, OR
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location: 44.53, -123.34     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 062133 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 232 PM PDT Thu Aug 6 2020

SYNOPSIS. Lingering showers will dissipate this evening as high pressure returns to the Pacific Northwest. Friday will be drier with plenty of afternoon sunshine and mild temperatures. The tail end of a weak cold front will likely brush our northern zones Saturday morning, deepening the marine layer and perhaps bringing some patchy drizzle to coastal areas. Drier weather returns later Saturday through Monday, along with a warming trend to above normal temperatures by early next week.

SHORT TERM. Tonight through Sunday . Visible satellite imagery shows that sunbreaks are increasing from west to east across the forecast area this afternoon, behind a cold front which is moving eastward across the Cascades. Rainfall totals from this front overperformed expectations a bit, with 0.19" at PDX Airport and 0.27" at Troutdale. Mostly light rain continues in the Cascades, but should taper to scattered showers as drier air moves in aloft. Showers will become increasingly confined to the higher terrain toward sunset, with showers likely coming to an end across the forecast area by midnight tonight.

Friday will start out cool but dry, with areas of morning clouds as high pressure builds back into the Pacific Northwest. Any morning clouds should give way to sunshine by midday as clouds clear off the coast. Given the cool and potentially cloudy start and continued onshore flow, temperatures Friday will probably remain a little below average with inland highs ranging from the mid 70s to lower 80s. 12z HREF and deterministic GFS suggest high clouds ahead of our next weak frontal system will begin spreading into NW portions of our CWA by Friday evening, with clouds increasing and thickening overnight as the front approaches. Models have been trending slightly stronger - or perhaps better said, less weak - with this front over the past few runs, with several deterministic models and ensembles suggesting some light precipitation for our north coastal zones. At this point, moisture seems too shallow for significant precip east of the Coast Range Saturday morning.

Given the models' deeper trend with the marine layer Sat morning, morning clouds could be fairly extensive and persistent. However the clouds should clear back to the coast by early or mid afternoon, allowing temperatures to climb back into upper 70s to mid 80s inland. Sunday will be considerably warmer as low amplitude upper ridging tries to push into the Pac NW. Meanwhile, a thermal trough of low pressure will be strengthening along the south Oregon coast, causing low-level flow to veer more northerly. With low-level flow turning less onshore and a shallower marine layer due to 500 mb heights in the upper 580s, it seems reasonable to think temperatures could make a run at 90 degrees inland Sunday and/or Monday. Weagle

LONG TERM. Monday through Thursday . As mentioned above, low amplitude upper ridging appears likely to build over Oregon and possibly Washington by Monday, leading to above normal temperatures inland. After Monday longer range models' solutions begin to differ, but the majority solution appears to favor some sort of upper trough development over the Pac NW by midweek. Again, models vary considerably on the strength of this upper trough and whether or not it will be strong enough to bring us rain, so we held close to the NBM solution which generally keeps our CWA dry. After a warm day Monday, temperatures should cool back closer to seasonal norms or perhaps slightly below that by midweek. Weagle

AVIATION. Onshore flow behind the front continues to bring isolated showers this afternoon. But these showers will diminish in the evening as the air mass stabilizes with the sun setting. VFR conditions prevailing but expect some local MVFR with showers. Also mountain obscuration with scattered showers can be expected into the evening hours. But the overall trend is for showers to end and clouds dissipate some. Should see enough clearing and stabilization of the air mass tonight for some fog or low stratus development early Fri, but confidence in widespread coverage is low at this time.

KPDX and APPROACHES . Conditions continue to improve this afternoon as high pressure build in behind the front that move through this morning. VFR will continue into tonight with spotty showers for the early evening hours. May have a stray MVFR cigs but expect it to be brief enough not to include in forecast. Will have to watch for MVFR cigs or vis developing early Fri morning.

MARINE. Northwest wind over the waters this afternoon as high pressure builds behind the front. But winds back to more westerly in the northern zones as a weak front approaches the waters Fri morning, then southwesterly as it moves into the waters Fri evening. High pressure rebounds rapidly Sat an may bring northerly winds gusting 25-30 kt Sat afternoon and continuing at times into Monday. Seas near 5 ft today and Fri, but 7-9 ft are expected over the weekend with periods of steep and choppy conditions likely. Northerly winds continue through much of next week with seas around 5-7 ft.

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
SBEO3 - 9435380 - South Beach, OR 38 mi54 min W 6 G 8.9 63°F 52°F1019.6 hPa
NWPO3 - Newport, OR 39 mi72 min W 4.1 G 5.1 63°F
46050 - STONEWALL BANKS - 20NM West of Newport, OR 65 mi32 min NNW 7.8 G 9.7 63°F 63°F1019.2 hPa56°F

Wind History for South Beach, Yaquina River, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Corvallis, Corvallis Municipal Airport, OR3 mi16 minNW 13 G 2010.00 miOvercast73°F48°F43%1017.9 hPa

Link to 5 minute data for KCVO

Wind History from CVO (wind in knots)
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1 day agoNW13--NW14NW15NW14NW15
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Tide / Current Tables for Toledo, Yaquina Bay and River, Oregon
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Toledo
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Thu -- 03:01 AM PDT     8.00 feet High Tide
Thu -- 06:08 AM PDT     Sunrise
Thu -- 09:06 AM PDT     Moonset
Thu -- 09:56 AM PDT     -0.17 feet Low Tide
Thu -- 04:20 PM PDT     7.14 feet High Tide
Thu -- 08:33 PM PDT     Sunset
Thu -- 10:06 PM PDT     2.20 feet Low Tide
Thu -- 10:30 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.76.37.587.66.54.931.40.2-0.20.31.63.35.16.47.176.24.93.62.62.22.5

Tide / Current Tables for Winant, Yaquina Bay and River, Oregon
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Winant
Click for Map
Thu -- 02:35 AM PDT     8.13 feet High Tide
Thu -- 06:08 AM PDT     Sunrise
Thu -- 09:06 AM PDT     Moonset
Thu -- 09:33 AM PDT     -0.18 feet Low Tide
Thu -- 03:54 PM PDT     7.27 feet High Tide
Thu -- 08:33 PM PDT     Sunset
Thu -- 09:43 PM PDT     2.39 feet Low Tide
Thu -- 10:30 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.6788.17.464.22.30.8-0-0.10.82.34.15.86.97.36.85.84.53.32.62.43

Weather Map
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wmap_P
GEOS 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 (20,4,5,8)
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Ground Weather Radar Station Portland, OR
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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 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 numerous 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.