Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Cannon Beach, OR

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 7:15AMSunset 4:39PM Saturday November 18, 2017 9:44 AM PST (17:44 UTC) Moonrise 7:17AMMoonset 5:22PM Illumination 0% Phase: New Moon; Moon at 29 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- 851 Am Pst Sat Nov 18 2017
.gale warning in effect from Sunday morning through Sunday evening...
Today..S wind 5 to 10 kt with gusts to 15 kt. Wind waves se 2 ft at 4 seconds, shifting to the sw at 4 seconds in the afternoon. W swell 5 ft at 8 seconds.
Tonight..S wind 15 to 20 kt with gusts to 25 kt, rising to 20 to 25 kt with gusts to 30 kt after midnight. Wind waves S 5 ft at 5 seconds. W swell 5 ft at 8 seconds.
Sun..S wind 25 to 30 kt with gusts to 40 kt, rising to 35 to 40 kt with gusts of 45 to 50 kt in the afternoon. Combined seas 14 ft with a dominant period of 8 seconds. Rain.
Sun night..S wind 35 to 40 kt with gusts of 45 to 50 kt, becoming W 15 to 20 kt with gusts to 30 kt after midnight. Combined seas building to 19 ft with a dominant period of 11 seconds. Rain.
Mon..W wind 10 to 15 kt, becoming se 5 to 10 kt with gusts to 20 kt in the afternoon. Combined seas 12 ft with a dominant period of 11 seconds in the morning. Rain likely.
Mon night..SE wind 10 to 15 kt with gusts to 20 kt. Wind waves se 4 ft at 5 seconds. SW swell 6 ft at 11 seconds. Rain likely.
Tue..S wind 20 to 25 kt. Combined seas 12 ft.
Wed..S wind 20 to 25 kt. Wind waves 6 ft. SW swell 12 ft.
PZZ200 851 Am Pst Sat Nov 18 2017
Synopsis for southern washington and northern oregon coast.. A strong front will bring gale force winds as it drops southeastward across the waters Sunday and Sunday night. Coastal jet development could enhance winds even further within 20 nm of the coast. This front will stall near the central oregon coast early Monday before lifting back northward and spreading stronger southerly winds back into the waters late Monday and Tuesday.

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 181727
afdpqr
area forecast discussion
national weather service portland or
927 am pst Sat nov 18 2017

Synopsis The upcoming week looks unsettled and wet. A weak upper
ridge will be over the pacific northwest today into early Sunday for
drying and stable conditions and for areas of persistent valley fog
and low clouds. The next system will slowly spread a front onshore
later Sunday and Sunday night for more rain and mountain snow, with
the lowest snow levels in the south washington cascades. The front
weakens later Monday then lifts north as a warm front for more rain
Monday night into Tuesday, but with rising snow levels. The warm
front will linger across the north part of the forecast area the
remainder of Tuesday and Wednesday. The next cold front moves through
on thanksgiving. A little drying early next weekend will be followed
by more precipitation the second half of next weekend.

Short term Today through Monday... National weather service doppler
radar shows the last of the showers lifting north along the coast
this morning as a weak upper ridge moves in. This will bring dry
weather over the area into Sunday, though accompanied by stable
conditions that will be conducive to fog, especially in the valleys.

There is not much surface pressure gradient this morning either, so
the valley fog and low clouds, especially south of portland, will be
slow to clear if it does at all today.

The stable conditions will lead to more fog and low clouds in the
valleys tonight and Sunday morning. There is a light offshore
gradient this morning in the gorge that has helped keep parts of the
the portland and vancouver metro areas free of fog, but that weakens
later today and tonight, so more of the valley areas should see some
fog and low clouds tonight and Sunday morning.

Attention then turns towards the next approaching frontal system. It
should start to spread some precipitation onshore in the north later
on Sunday, then slowly sag south for more substantial rain Sunday
night into Monday. The front moves enough that may preclude any
significant flooding. The front will also be accompanied by some
strong south winds ahead of the front, especially along the coast,
but some breezy conditions inland as well. Snow levels may be low
enough for a while in the south washington cascades that could
produce some decent snows above 4000 feet or so Sunday night.

All in all, Sunday night and Monday look wet and unsettled. Tolleson

Long term No changes. Previous discussion follows...

Monday night through Friday. Overall confidence has improved in the
forecast for next week with better model agreement. Models in good
agreement in lifting a warm front north through the forecast area mon
night and tue, so will boost pops to likely category for most of the
region. Frontal system lingers into wed, keeping pops high wed. For
the thanksgiving holiday, some chance of rain will continue across
the area, but expect temperatures to be several degrees above
seasonal normals, with afternoon highs in the mid 50s, with perhaps
upper 50s at a few spots. However, snow levels look to remain well
above the cascade passes during the time. Another short-lived break
from the rain is likely on Friday, but the next system quickly
arrives by next weekend. Cullen

Aviation Widespread lifr fog across the central and southern
willamette valley will continue through ~20-22z before lifting into
an ifr stratus deck this afternoon. Thinking some sites remain stuck
in the soup so to speak into this evening with surrounding sites that
did improve today gradually deteriorating once again overnight. Mid
and high level cloudiness overnight may prevent fog from redeveloping
in some spots, though. Light southeasterly winds near the coast
should be enough to keep conditions primarilyVFR.

Kpdx and approaches... Some patchy ifr stratus around the terminal
will continue to bring some temporary restrictions this morning, but
conditions should remain predominantlyVFR at the terminal today. Mid
and high level cloudiness overnight should keep kpdx mainlyVFR, but
it won't take much clearing to result in deteriorations. Neuman

Marine A strong front is still on track to spread gale force wind
gusts of 40 to 45 kt across the waters Sunday and Sunday night. Winds
will increase the outer waters late tonight, but will be slower to
spread into the inner waters. Left the timing of the gale warning
intact for all zones, but there is a decent chance it will need to be
extended past Sunday evening as latest model guidance suggests gale
force winds will likely continue past midnight. In addition, coastal
jet development will likely enhance winds within 20 nm of the coast,
and may see storm force gusts of 50 kt within this region, but
confidence in this level of detail at this point is low. Either way,
seas appear likely to top out near 20 ft, possibly a touch higher
briefly, Sunday evening. The aforementioned front is forecast to
stall out near the central oregon coast late Sunday night or early
Monday morning before lifting back northward on Monday. When it does
so, expect high end small craft advisory to low end gale force wind
gusts of 30 to 35 kt to spread northward across the waters. This
should also result in seas climbing well into the teens once again
early next week where they look to linger through at least
thanksgiving. Neuman

Pqr watches warnings advisories
Or... Dense fog advisory until noon pst today for central willamette
valley-south willamette valley.

High wind watch from Sunday afternoon through Sunday evening
for north oregon coast.

Wa... High wind watch from Sunday afternoon through Sunday evening
for south washington coast.

Winter storm watch from Sunday evening through late Sunday
night for south washington cascades.

Pz... Gale warning from 1 am to 10 pm pst Sunday for waters from cape
shoalwater wa to florence or from 10 to 60 nm.

Gale warning from 10 am to 10 pm pst Sunday for coastal waters
from CAPE shoalwater wa to florence or out 10 nm.

Small craft advisory for rough columbia river bar from 3 pm to
6 pm pst Sunday.

Small craft advisory for rough columbia river bar from 3 am to
6 am pst Monday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46243 - Clatsop Spit, OR - 162 28 mi44 min 52°F5 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi54 min S 14 G 16 51°F 53°F5 ft1024.2 hPa (-0.4)45°F
46T29 40 mi34 min S 14 G 16 51°F 53°F5 ft1024.8 hPa46°F
46248 - Astoria Canyon, OR (179) 43 mi49 min 54°F5 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi49 minN 010.00 miOvercast43°F41°F93%1024.6 hPa

Wind History from AST (wind in knots)
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Last 24hrNE3SE4SW7W9SW8SW7SW8SW5S4S4SE4SE5S7SE6SE6SE3E4E5CalmCalmE5NE4CalmCalm
1 day agoN8NE5SE7S7SE9S5SE9SW4SW5--SW8E4SE4SE5SE6E4S3CalmCalmSE6E4SE4SE4Calm
2 days agoSE5S8SE6S8S8
G22
SE7SE5CalmE5SE9SE6SE4SE4SE4CalmSW5SE4N46SE5SE93SE4N8

Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
Click for Map
Sat -- 12:50 AM PST     6.12 feet High Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 06:48 AM PST     1.85 feet Low Tide
Sat -- 07:16 AM PST     Moonrise
Sat -- 07:19 AM PST     Sunrise
Sat -- 12:07 PM PST     7.55 feet High Tide
Sat -- 04:41 PM PST     Sunset
Sat -- 05:21 PM PST     Moonset
Sat -- 07:38 PM PST     -0.29 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.86.15.74.93.82.721.92.53.85.56.97.57.36.45.13.51.90.6-0.2-0.20.62.13.8

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
Click for Map
Sat -- 12:27 AM PST     6.82 feet High Tide
Sat -- 03:42 AM PST     New Moon
Sat -- 05:49 AM PST     2.60 feet Low Tide
Sat -- 07:16 AM PST     Moonrise
Sat -- 07:19 AM PST     Sunrise
Sat -- 11:43 AM PST     8.36 feet High Tide
Sat -- 04:41 PM PST     Sunset
Sat -- 05:22 PM PST     Moonset
Sat -- 06:39 PM PST     -0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.76.764.93.72.82.63.14.35.77.28.18.37.76.34.52.50.9-0.1-0.20.51.93.65.2

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 (12,3,4,5)
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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.