Monday, September28, 2020
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Marine Weather and Tides
Salem, OR

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:04AMSunset 7:00PM Sunday September 27, 2020 10:25 PM PDT (05:25 UTC) Moonrise 4:45PMMoonset 1:31AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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- 241 Pm Pdt Sun Sep 27 2020
.small craft advisory in effect through Tuesday morning...
Tonight..N wind 10 to 15 kt with gusts to 20 kt. Local gusts to 25 kt. Wind waves N 4 ft at 5 seconds. W swell 4 ft at 8 seconds.
Mon..N wind 10 to 15 kt with gusts to 20 kt. Local gusts to 25 kt. Wind waves N 3 ft at 4 seconds. W swell 4 ft at 10 seconds.
Mon night..NE wind 10 to 15 kt with gusts to 20 kt, becoming E 5 to 10 kt with gusts to 15 kt after midnight. Wind waves ne 3 ft at 4 seconds. W swell 9 ft at 16 seconds. Patchy smoke.
Tue..SE wind 5 to 10 kt. Gusts to 15 kt in the morning. Wind waves se 1 ft at 4 seconds. W swell 9 ft at 14 seconds. Patchy smoke.
Tue night..S wind 5 to 10 kt. Wind waves S 1 ft at 4 seconds. W swell 6 ft at 12 seconds. Patchy smoke.
Wed..SW wind 5 kt. Wind waves 2 ft. W swell 5 ft.
Wed night..N wind 5 to 10 kt. Wind waves 2 ft. W swell 4 ft.
Thu..N wind 5 to 10 kt. Wind waves 2 ft. W swell 8 ft.
Fri..NW wind 5 to 10 kt. Wind waves 2 ft. W swell 6 ft.
PZZ200 241 Pm Pdt Sun Sep 27 2020
Synopsis for the southern washington and northern oregon coast.. High pressure aloft continues to strengthen through early next week. Surface thermal low pressure pushes north from california tonight and slowly drifts offshore resulting in north to northeasterly winds across the waters through Tuesday. High pressure sits over the waters for a few days thereafter.


7 Day Forecast for Marine Location Near Salem, OR
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location: 44.91, -123.05     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 280451 AAA AFDPQR

Area Forecast Discussion . UPDATED National Weather Service Portland OR 950 PM PDT Sun Sep 27 2020

Updated Aviation discussion.

SYNOPSIS. Warm and dry conditions expected this week as high pressure remains anchored over the Pacific Northwest. Northeasterly flow will become locally breezy Monday resulting in above normal temperatures all the way to the coast. Could also see the return of patchy smoke downwind of area wildfires. Conditions along the coast start to cool off a bit later this week as offshore flow wanes and afternoon sea breezes are allowed to kick in.

SHORT TERM. Tonight through Wednesday . Valley fog and stratus dissipated a few hours ago resulting in sunny skies across NW Oregon and SW Washington this afternoon. Afternoon temperatures will be rather seasonable today, but above normal temperatures are expected through Tuesday as high pressure builds into the Pacific Northwest, with guidance suggesting that the upper level ridge axis will remain overhead through at least Tuesday. Modest northeast to east winds will help to carry the above normal temperature to the coast Monday and Tuesday. Given the latest guidance we could see near record temperatures the next couple of days. In addition, we could see the return of patchy smoke downwind of local wildfires as fuels start to dry out from our recent rains. Guidance also shows the thermal trough over the region which could add to some smoke production as fire become more plume dominated.

Offshore flow starts to weaken towards Wednesday as the upper level ridge axis starts to shift inland which should help afternoon sea breezes kick in along the coast resulting in slightly cooler temperatures. Unfortunately, inland areas will remain above normal Wednesday as these sea breezes will not be strong enough to bring marine air past the Coast Range.

One last thing, guidance continues to show a long period westerly swell around 12 ft at 18 seconds moving across the waters Monday night into Tuesday which will result in a high threat of sneaker waves at local beaches. /64

LONG TERM. Wednesday night through Sunday . Guidance continues to show the upper level ridge axis shifting inland through the end of the week. This should result in some light onshore flow along the coast keeping temperatures near normal. Unfortunately, inland areas will continue to see weak offshore flow keeping temperatures above normal through the weekend. The continuation of warm and dry conditions may also result in patchy smoke downwind of area fires through the weekend. Guidance was starting to show an upper level trough approaching the region late Sunday into Monday, but the latest 12Z guidance is starting to back off on this idea so will need to wait and see if we could see some rain next week. /64

AVIATION. 06Z TAFs: VFR conditions expected for the next 24 hours. Increasing offshore flow as a thermal trough strengthens along the coast and high pressure increases east of the Cascades. The 06Z TAF will include AMD NOT SKED 2806/2809 due to NWS network maintenance.

Refer to http://weather.gov/zse for detailed regional aviation weather and hazard information.

KPDX AND APPROACHES . VFR expected next 24 hours. Offshore flow increases with east to northeast wind gusting 15-25 kt 21Z Mon - 03Z Tue.

MARINE. No significant changes. Winds become more northeasterly early Sunday and persist into early next week as thermally induced low builds up along the OR/CA coast. Expect small craft advisory winds for all waters starting Sunday evening and lasting though Monday evening, possibly Tuesday morning. While the small craft advisory for winds is for all waters, eventually the inner water advisory winds will be confined to areas downrange of gaps and flows within the Coastal Range. Winds are expected to ease Monday.

However, a distant swell from a strong low pressure within the northern Gulf of Alaska will send a building westerly swell across the waters. Combined seas likely reach 11 to 13 feet late Monday afternoon ans stay elevated through early Tuesday morning. Seas then will quickly subside below 8 ft by Tuesday afternoon. Have included this period at the end of the wind threat portion of the small craft advisory. Seas will continue to subside to near 5 feet before building toward 8-9 feet again by Thursday.

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory until 10 AM PDT Tuesday for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory from 1 AM to 5 AM PDT Monday for Columbia River Bar.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBEO3 - 9435380 - South Beach, OR 56 mi56 min Calm G 1 60°F 60°F1025.6 hPa
NWPO3 - Newport, OR 58 mi26 min ENE 4.1 G 5.1 59°F
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 64 mi56 min 57°F1027.4 hPa

Wind History for South Beach, Yaquina River, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Salem - McNary Field, OR2 mi30 minNNW 610.00 miFair59°F48°F69%1026.4 hPa
McMinnville, McMinnville Municipal Airport, OR20 mi33 minN 1010.00 miFair63°F50°F63%1026.6 hPa

Link to 5 minute data for KSLE

Wind History from SLE (wind in knots)
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Last 24hrCalmCalmCalmCalmS3CalmCalmW3CalmNW3CalmN5N9N11N13
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N12N10N14N13N8N7NE7N6
1 day agoNW3CalmCalmSE5S3S5CalmCalmCalmSE5S7S9SW10S10S8SW12SW7S10W8NW7W6CalmCalmSW3
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Tide / Current Tables for Nestucca Bay entrance, Oregon
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Nestucca Bay entrance
Click for Map
Mon -- 03:39 AM PDT     Moonset
Mon -- 05:30 AM PDT     0.25 feet Low Tide
Mon -- 07:10 AM PDT     Sunrise
Mon -- 11:48 AM PDT     6.78 feet High Tide
Mon -- 05:46 PM PDT     2.15 feet Low Tide
Mon -- 06:15 PM PDT     Moonrise
Mon -- 07:00 PM PDT     Sunset
Mon -- 11:20 PM PDT     7.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.35.23.72.210.30.31.12.54.15.66.56.86.35.44.23.12.32.22.73.85.26.47.1

Tide / Current Tables for Kernville, Siletz River, Oregon
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Kernville
Click for Map
Mon -- 03:41 AM PDT     Moonset
Mon -- 06:11 AM PDT     0.18 feet Low Tide
Mon -- 07:11 AM PDT     Sunrise
Mon -- 12:17 PM PDT     5.30 feet High Tide
Mon -- 06:15 PM PDT     Moonrise
Mon -- 06:27 PM PDT     1.57 feet Low Tide
Mon -- 07:00 PM PDT     Sunset
Mon -- 11:49 PM PDT     5.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.34.63.62.41.30.50.20.41.22.53.84.85.35.24.63.82.821.61.72.33.44.55.4

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.