Wednesday, December11, 2019
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Marine Weather and Tides
Cannon Beach, OR

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:40AMSunset 4:30PM Wednesday December 11, 2019 5:13 PM PST (01:13 UTC) Moonrise 4:27PMMoonset 7:06AM Illumination 100% Phase: Full Moon; Moon at 15 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-coastal Waters From Cascade Head To Florence Or Out 10 Nm- 230 Pm Pst Wed Dec 11 2019
.gale warning in effect until 1 am pst Thursday...
Tonight..S wind 25 to 30 kt with gusts to 40 kt, becoming sw 15 to 20 kt with gusts to 25 kt. Combined seas 10 ft with a dominant period of 14 seconds, building to 14 ft with a dominant period of 13 seconds. Rain.
Thu..S wind 20 to 25 kt, becoming sw 15 to 20 kt in the afternoon. Wind waves sw 4 ft at 6 seconds. W swell 17 ft at 17 seconds. Rain in the morning, then showers and a slight chance of tstms in the afternoon.
Thu night..SW wind 15 to 20 kt with gusts to 25 kt, easing to 10 to 15 kt with gusts to 20 kt after midnight. Wind waves sw 3 ft at 6 seconds. W swell 16 ft at 16 seconds. Slight chance of tstms in the evening. Showers.
Fri..SW wind 5 to 10 kt. Gusts to 15 kt in the morning. Wind waves sw 2 ft at 4 seconds. W swell 15 ft at 16 seconds. Showers likely.
Fri night..SW wind 5 kt. Wind waves sw 1 ft at 4 seconds. W swell 13 ft at 15 seconds. Chance of showers.
Sat..S wind 5 to 10 kt with gusts to 15 kt. Wind waves 2 ft. W swell 12 ft. Chance of showers.
Sat night..SE wind 5 to 10 kt. Wind waves 1 ft. W swell 9 ft. Chance of showers.
Sun..S wind 5 to 10 kt. Wind waves 2 ft. W swell 10 ft.
Mon..SE wind 10 to 15 kt. Wind waves 2 ft. W swell 9 ft.
PZZ200 230 Pm Pst Wed Dec 11 2019
Synopsis for the southern washington and northern oregon coast.. A strong front will bring gale force winds today with larger seas tonight into Thu. Weak high pres builds over the waters Fri.


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 112315 AFDPQR

Area Forecast Discussion National Weather Service Portland OR 315 PM PST Wed Dec 11 2019

SYNOPSIS. Low level rain and high elevation snow will persist through Thursday, turning to rain and snow showers Friday through the weekend.

SHORT TERM. Wednesday afternoon through Saturday . A warm front lifted north earlier today with some rain remaining in the area behind it this afternoon. Most areas will see rain briefly become more showery overnight before the next system arrives. Satellite imagery this afternoon shows a cloud band associated with a strong cold front located around 128W with cold pool convection behind it. There hasn't been much change in the short term forecast thinking today, so kept the forecast pretty consistent. It continues to look like we'll get a significant amount of rain and high elevation snow over the next 24 hours, but dry antecedent conditions should mean there's no river flooding threat. Significant street ponding is likely if any street drains are clogged, but don't see an overall threat for urban flooding.

In addition to rainy, Thursday also looks windy across the board, although significant wind impacts aren't expected. Operational model runs are pretty consistent in showing about a 4 mb gradient in the Willamette Valley, which should translate to winds well below Wind Advisory criteria, but people are likely to notice that it's windy. In the Cascades, wind will combine with snow, but given the wet nature of the snow, don't think the combo will cause long lasting significant visibility reductions.

Of note to beachgoers, Thursday's surf is likely to bring hazardous beach conditions in the form of consistently higher than usual wave run-ups (high surf) and occasional surprising extra long run- ups (sneaker waves). See the High Surf Advisory for more details.

Thursday afternoon, behind the front, kept in a slight chance for thunderstorms along the north OR and south WA coasts. Lightning networks have detected some lightning in the cold pool behind the front (well offshore) this afternoon and models continue to show favorable instability into Thursday evening as the cold pool moves towards the local area.

Also with the cold pool, snow levels in the Cascades will fall late Thursday afternoon through Friday, settling around 3500 to 4000 ft Friday, then dropping further Saturday to around 2500 ft. Expect showery conditions as the snow level drops, so while widespread snow accumulations after Friday morning are expected to be unimpressive, on/off snow will continue through at least Saturday. Bowen

LONG TERM. Saturday night through Wednesday . Operational models seem to be in agreement that an upper level trough will move through the area Saturday night through Monday, increasing chances for precipitation for the forecast area. Snow levels during this time will settle around 2500 ft bringing snow to the Cascades. Beginning Monday night, operational models are in agreement that an upper level ridge will develop over the Pacific NW until at least Tuesday. This should result in a break from the rainy pattern. However, uncertainty remains in the duration of this ridging. Following this brief dry period, an active pattern continues for the foreseeable future starting Wednesday. -Thaler

AVIATION. A mix of VFR-MVFR will be the dominant trend with southerly, gusty winds through this evening. Rain is expected to increase later this afternoon and persist through the evening. Coastal sites are expected to see gusts around 25 kt through the night. IFR conditions are expected late this evening around 09Z as low level stratus pushes onshore from the southwest. LLWS is expected for KONP and KTTD this evening.

KPDX AND APPROACHES . VFR conditions will deteriorate as the front passes with accompanying rain. Ceilings will drop to MVFR this evening with a chance of IFR ceilings but visibility should stay VFR. Southerly winds will persist through this evening. -BPhillips

MARINE. Winds will ramp up today as a strong front from a Gulf of Alaska low swings across the waters bringing Gale force winds between 40 to 45 kt later this afternoon through the evening hours. Winds will subside but remain gusty through Thursday night which will continue to pose hazards for small crafts. High pressure builds over the waters Friday which will weaken the winds to 10 kt or lower. There is a possibility of a weaker front arriving Saturday but there is too much disagreement on the strength of the winds to put much confidence in the arrival time

There is a general consensus between models that the primary swell will be between 17 to 19 ft and period between 15 and 17s. Combined wave heights may reach 20 ft in some areas, mainly offshore. Seas will generally stay at or above 10 ft through the weekend. Long period swells pose an increased risk for hazardous beaches. -BPhillips

PQR WATCHES/WARNINGS/ADVISORIES. OR . Winter Storm Warning from 4 PM this afternoon to noon PST Friday for Northern Oregon Cascades.

Winter Storm Warning from midnight tonight to noon PST Friday for Cascades in Lane County.

WA . Winter Storm Warning from 1 PM this afternoon to noon PST Friday for South Washington Cascades.

PZ . Small Craft Advisory until 1 PM PST this afternoon for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Gale Warning from 1 PM this afternoon to 1 AM PST Thursday for coastal waters from Cape Shoalwater WA to Florence OR out 60 NM.

Small Craft Advisory until 6 AM PST Thursday for Columbia River Bar.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 19 mi55 min 48°F1011.7 hPa
46243 - Clatsop Spit, OR - 162 28 mi43 min 48°F10 ft
ASTO3 - 9439040 - Astoria, OR 28 mi55 min NNW 1.9 G 6 47°F 46°F1010.3 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi83 min SSE 23 G 27 51°F 51°F10 ft1009.2 hPa (-2.8)48°F
46248 - Astoria Canyon, OR (179) 43 mi43 min 51°F11 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi18 minE 56.00 miLight Rain Fog/Mist48°F46°F93%1009.7 hPa

Link to 5 minute data for KAST

Wind History from AST (wind in knots)
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Last 24hrE4E3E4CalmCalmE3E5E4E4E4CalmE4E5E5E4E6SE5S13
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1 day agoCalmCalmCalmSE4S3SE5CalmSE3SE6SE4E7E6E6E5E7E5E6E6E4SE3E3CalmE3E4
2 days agoCalmSW3CalmCalmCalmCalmCalmCalmCalmE5E5E3NE4E5CalmCalmE3NE4E7NE7NE7E8E6E5

Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
Click for Map
Wed -- 12:34 AM PST     5.98 feet High Tide
Wed -- 06:12 AM PST     2.33 feet Low Tide
Wed -- 07:05 AM PST     Moonset
Wed -- 07:46 AM PST     Sunrise
Wed -- 11:32 AM PST     8.01 feet High Tide
Wed -- 04:27 PM PST     Moonrise
Wed -- 04:31 PM PST     Sunset
Wed -- 07:17 PM PST     -0.46 feet Low Tide
Wed -- 09:14 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.95.95.44.53.52.72.32.63.75.26.87.87.97.36.14.62.81.30.1-0.4-0.20.92.54.2

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
Click for Map
Wed -- 12:07 AM PST     6.56 feet High Tide
Wed -- 05:10 AM PST     3.11 feet Low Tide
Wed -- 07:05 AM PST     Moonset
Wed -- 07:46 AM PST     Sunrise
Wed -- 11:06 AM PST     8.78 feet High Tide
Wed -- 04:27 PM PST     Moonrise
Wed -- 04:31 PM PST     Sunset
Wed -- 06:15 PM PST     -0.62 feet Low Tide
Wed -- 09:14 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.66.35.54.53.63.13.34.25.67.18.38.88.57.35.63.51.50.1-0.6-0.40.72.345.5

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 (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 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.