Monday, August10, 2020
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Marine Weather and Tides
Cannon Beach, 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 6:06AMSunset 8:28PM Monday August 10, 2020 4:57 PM PDT (23:57 UTC) Moonrise 10:54PMMoonset 12:14PM Illumination 55% Phase: Waning Gibbous; Moon at 22 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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PZZ250 Coastal Waters From Cape Shoalwater Wa To Cascade Head Or Out 10 Nm- 249 Pm Pdt Mon Aug 10 2020
.small craft advisory in effect until 5 pm pdt this afternoon...
Tonight..N wind 10 kt with gusts to 15 kt. Wind waves N 3 ft at 4 seconds. NW swell 9 ft at 13 seconds.
Tue..NW wind 5 to 10 kt. Wind waves nw 1 ft at 4 seconds. NW swell 8 ft at 12 seconds.
Tue night..NW wind 5 to 10 kt with gusts to 15 kt. Wind waves nw 2 ft at 4 seconds. NW swell 6 ft at 11 seconds.
Wed..N wind to 5 kt, becoming nw in the afternoon. Wind waves nw 1 ft at 4 seconds. NW swell 5 ft at 9 seconds.
Wed night..N wind 10 to 15 kt. Wind waves N 2 ft at 4 seconds. NW swell 4 ft at 8 seconds.
Thu..NW wind 5 to 10 kt with gusts to 15 kt. Wind waves 2 ft. NW swell 4 ft.
Thu night..N wind 5 to 10 kt with gusts to 15 kt. Wind waves 2 ft. NW swell 4 ft.
Fri..N wind 10 to 15 kt. Wind waves 3 ft. NW swell 4 ft.
Sat..N wind 10 to 15 kt. Wind waves 3 ft. NW swell 5 ft.
PZZ200 249 Pm Pdt Mon Aug 10 2020
Synopsis for the southern washington and northern oregon coast.. High pressure off the wa coast and a trough of low pressure along the south oregon coast will continue this evening. The high pressure will spread south into the oregon waters tonight and Tuesday resulting in a rather benign weather pattern for the remainder of the week.


7 Day Forecast for Marine Location Near Cannon Beach, OR
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location: 45.83, -123.94     debug


Area Discussion for - Portland, OR
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FXUS66 KPQR 102146 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 246 PM PDT Mon Aug 10 2020

SYNOPSIS. A broad upper level trough will swing across the Pacific Northwest over the next few days. This will bring a return to cooler temperatures along with an increase in late night and morning clouds to the coast and north part of the interior. Warmer weather returns towards the weekend as an upper level ridge of high pressure builds over the far western U.S.

SHORT TERM. Tonight through Thursday . A northwest onshore flow was strengthening Monday afternoon, the beginning of a marine push tonight and Tuesday. Models consistent in showing a broad upper trough carving out over the Pacific Northwest this week, but the low is not particularly deep with 500 mb heights bottoming out around 570-573 dm across the north part of the forecast area. Time height cross sections suggest just shallow moisture with the onshore flow, so will keep the forecast dry through Thursday, with the main impacts being a return to cooler than normal temperatures and mainly late night and morning marine clouds along the coast and into the north interior. The coolest day with most widespread clouds is likely to be Wednesday as the trough bottoms out and an 850 mb cool pool moves across with 850 mb temps on the order of 8C to 10C.

LONG TERM. Thursday night through Monday . Models in good agreement in continuing to show a ridge developing over the region headed into the weekend, before shifting slowly east in the ensuing days. Model trends have been for a stronger ridge over the weekend than earlier runs, with 850 mb temps likely peaking above 22C, which should be good for 90s for the inland valleys over the weekend. Temperatures along the coast appear likely to be warm as well, bit not quite so hot as onshore winds appear likely to develop each afternoon with the upper ridge inland. Sunday and Monday models tending to shift the upper flow more to the south-southwest as the pattern shifts east, and while timing is uncertain, there are hints in the models of a shortwave lifting through around Monday. For now will stick with National Blend and limit pops to a slight chance for showers in the north Sunday night and Monday, but the pattern may ultimately wind up being supportive of chances for convection over the Cascades. Monday may wind up being pretty warm as well, depending on how quickly the ridge breaks down.

AVIATION. VFR conditions through the evening with gusty winds, especially along the coast as gusts could reach up to 35 kt.

Low MVFR to IFR cigs return to the coast this evening and push into the coast range valleys tonight and continue up lower Columbia River to near KSPB. These lower cigs could possibly reach KPDX after 12Z Tuesday but, confidence remains low.

KPDX and APPROACHES . Predominately VFR conditions continues over the next 24 hours with gusty northerly winds for several hours after 00Z Tuesday. Low MVFR cigs expected to approach KPDX from the west via the Columbia River around 12Z Tuesday. However, confidence is currently low that these cigs will impact the terminal. /42

MARINE. A ridge of high pressure extending onto the Washington coast and a trough of low pressure along the south Oregon coast will bring gusty north winds to the coastal waters through tonight. The strongest winds are expected generally south of Tillamook Head where gusts of 25 to 30 kt are possible.

Seas will build to 7 to 11 ft with the strong winds, and a fresh northwest swell. This will create choppy seas dominated by steep short period swells and wind waves through Tuesday morning.

As the ridge of high pressure shifts south tonight and Tuesday, the winds will ease and seas subside. This will result in northwest winds under 20 kt and seas 5 to 7 ft through the remainder of the week. /42

PQR WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None. PZ . Small Craft Advisory until 6 AM PDT Tuesday for coastal waters from Cape Shoalwater WA to Florence OR from 10 to 60 NM.

Small Craft Advisory until 5 PM PDT this afternoon for Coastal waters from Cape Shoalwater WA to Cascade Head OR out 10 NM.

Small Craft Advisory until 11 PM PDT this evening for Coastal waters from Cascade Head to Florence OR out 10 NM.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 19 mi64 min 50°F1018.1 hPa
46243 - Clatsop Spit, OR - 162 28 mi62 min 62°F5 ft
ASTO3 - 9439040 - Astoria, OR 28 mi64 min WNW 4.1 G 7 68°F 72°F1018.4 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi38 min NNW 14 G 16 58°F1019.4 hPa
46248 - Astoria Canyon, OR (179) 43 mi62 min 60°F6 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi63 minNW 1510.00 miFair66°F55°F70%1018.5 hPa

Link to 5 minute data for KAST

Wind History from AST (wind in knots)
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N12NW12N12NW12NW11N11NW11N8CalmE3SE5S4N3NW3N6N8NW10NW10NW15NW14
2 days agoNW9W7NW8W6W4CalmCalmSE3SE3CalmCalmW4NW4W4NW4NW7NW7NW6N10NW11NW16NW17
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Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
Click for Map
Mon -- 12:50 AM PDT     1.57 feet Low Tide
Mon -- 05:59 AM PDT     5.01 feet High Tide
Mon -- 06:10 AM PDT     Sunrise
Mon -- 12:29 PM PDT     1.57 feet Low Tide
Mon -- 01:14 PM PDT     Moonset
Mon -- 06:25 PM PDT     6.24 feet High Tide
Mon -- 08:30 PM PDT     Sunset
Mon -- 11:53 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.71.622.93.94.754.84.33.52.721.61.62.33.34.55.66.26.25.74.93.92.9

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
Click for Map
Mon -- 05:33 AM PDT     5.50 feet High Tide
Mon -- 06:10 AM PDT     Sunrise
Mon -- 11:27 AM PDT     2.09 feet Low Tide
Mon -- 01:14 PM PDT     Moonset
Mon -- 05:59 PM PDT     6.84 feet High Tide
Mon -- 08:30 PM PDT     Sunset
Mon -- 11:53 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.53.24.14.95.45.554.33.42.62.12.22.73.64.85.86.66.86.65.84.83.62.7

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
Wind Forecast for Portland, OR (19,4,5,8)
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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 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.