Saturday, July22, 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 5:45AMSunset 8:52PM Saturday July 22, 2017 7:46 PM PDT (02:46 UTC) Moonrise 4:04AMMoonset 7:24PM 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- Waters From Cape Shoalwater Wa To Cascade Head Or From 10 To 60 Nm- 259 Pm Pdt Sat Jul 22 2017
.small craft advisory for winds and hazardous seas in effect from 8 pm pdt this evening through late Sunday night...
Tonight..NW wind 5 to 10 kt with gusts to 15 kt, becoming N 15 to 20 kt with gusts to 25 kt. Wind waves N 4 ft at 5 seconds. W swell 3 ft at 7 seconds.
Sun..N wind 20 to 25 kt with gusts to 30 kt. Wind waves N 7 ft at 7 seconds. W swell 2 ft at 8 seconds.
Sun night..N wind 20 to 25 kt with gusts to 30 kt. Wind waves N 7 ft at 7 seconds. NW swell 3 ft at 8 seconds.
Mon..N wind 20 to 25 kt. Wind waves N 5 ft at 6 seconds. NW swell 7 ft at 8 seconds.
Mon night..NW wind 20 to 25 kt. Wind waves nw 5 ft at 7 seconds. NW swell 6 ft at 8 seconds.
Tue..NW wind 15 to 20 kt with gusts to 25 kt. Wind waves 4 ft. NW swell 6 ft.
Tue night..NW wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. NW swell 7 ft.
Wed..NW wind 10 to 15 kt. Wind waves 3 ft. NW swell 6 ft.
Thu..NW wind 5 to 10 kt. Wind waves 2 ft. W swell 4 ft.
PZZ200 259 Pm Pdt Sat Jul 22 2017
Synopsis for southern washington and northern oregon coast.. High pres will continue to strengthen over the ne pac today through Sunday, with thermal low pres strengthening over sw or and nw ca. Gusty N winds and steep seas will develop later today and linger through early next 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 222210
afdpqr
area forecast discussion
national weather service portland or
304 pm pdt Sat jul 22 2017

Synopsis a weak upper trough will pass over washington on Sunday
for a slight increase in onshore flow bringing a bit of cooling to
to the coast and willamette valley. An upper ridge will build over
our area on Monday and Tuesday for a warning trend. An upper level
low to our southwest may produce some thunderstorms in the
lane county cascades Sunday through Tuesday afternoon and evening.

Increased onshore flow and cooler conditions are expected for the
second half of next week bringing temperatures back to near normal.

Short term Saturday night through Tuesday... Upper trough passing
by to the north on Sunday will result in some cooling of the air mass
over the region. Onshore flow will likely push marine stratus into
the willamette valley and southwest washington interior during the
early morning hours on Sunday. This afternoon temperatures should
reach the lower 90s in most valley locations but the upper trough
will result in temperatures around 5 degrees cooler Sunday.

There is a developing upper low off the coast of california which
will move to the N california coast and linger through Tuesday.

Southerly flow develops aloft ahead of the low and will likely result
in increasing moisture at mid and high levels over the southern
portion of our forecast area. Chance of thunderstorms in the lane
county cascades Sunday through Tuesday during heating in the
afternoon and evening hours. This appears to be the most significant
chance of lightning with the potential for fire starts in the
cascades so far this summer. Models show that any moisture that does
form will be high level and not likely to see any significant
percipitation from this system. The southerly flow combines with the
upper ridge to the north of the low for warming on Tuesday... Likely
shooting back in the the lower 90s in the valleys.

Long term Tuesday night through Saturday... Models are in good
agreement kicking out the upper low over northern california t moving
it northwest during the day on Wednesday. Weak westerly flow develops
at 700mb as the low moves out it looks like the threat of
thunderstorms will be greatly reduced. However, this could change if
the upper low lingers... Which they are notorious for doing this time
of year. That could prolong convection for another afternoon and
evening heating cycle.

Models show a upper trough approaching from the northwest by Thursday
which puts us back in wsw flow aloft and drys out the cascades ending
any thunderstorm threat. Night and morning low clouds may become more
extensive Thursday through Saturday with temperatures returning to
near normal.

Schneider

Aviation Expect predominatelyVFR conditions under mostly
clear skies through tonight. Winds will continue to increase
along the coast this afternoon with gusts to 25 kt possible at
konp and gusts to 20 kt at kast. Gusty winds in the interior,
with gusts 15-20 kt, will continue through this evening before
subsiding by 06z tonight. MVFR conditions look to redevelop along
the coast after 06z tonight. Brief periods of localized ifr fog
is possible early Sunday morning in some of the more sheltered
valleys along the coast. Conditions in the interior will likely
remainVFR the next 24 hours. However, guidance continues to show
some MVFR CIGS developing along the columbia river early Sunday
morning which could bring a brief period of reduced CIGS to the
metro terminals between 12-18z, but confidence is low on whether
these CIGS will impact the terminal. Kttd has the best chance of
MVFR CIGS as low stratus develops along the cascade foothills
overnight. Expect any low CIGS that do develop to be brief and
lift by late Sunday morning.

Kpdx and approaches... PredominatelyVFR the next 24 hours. Gusty
winds to 15 kt possible through around midnight tonight. There
is a chance that MVFR CIGS around 2000 ft will briefly impact the
terminal between 13-17z Sunday, but confidence is low. 64

Marine High pressure will continue to strengthen over the ne
pacific this afternoon, while hot weather over SW oregon and nw
california will help to strengthen a thermal trough over those
areas. This will bring an increase in northerly winds, with gusts
25-30 kt expected across our southern waters by sunset and
spreading north into our northern waters later tonight. The
increasing winds will result in steep wind-driven seas. Winds
will continue to increase on Sunday. Models continue to suggest
that gale force winds are possible over our southern waters.

However, northerly gales over our waters are relatively rare, so
given that the stronger models continue to only show marginal
gales will stick with our current small craft advisories for
winds and hazardous seas, but would not be surprised local gusts
to 35 kt. SCA conditions look to persist into Tuesday so the
current advisories will likely need to be extended. Models then
show an upper trough from the gulf of alaska moving closer to our
waters which will likely bring a decrease in winds seas towards
the middle of next week. 64

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds and hazardous seas from 8 pm
this evening to 6 am pdt Monday for coastal waters from
cape shoalwater wa to cascade head or out 60 nm.

Small craft advisory for winds and hazardous seas until
6 am pdt Monday for coastal waters from cascade head or
to florence or out 60 nm.

Small craft advisory for rough columbia river bar from 3 am
to 7 am pdt Sunday.

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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 mi47 min 66°F1019.2 hPa (-1.2)
46096 26 mi137 min NNW 14 G 16 57°F 62°F1021.3 hPa
ASTO3 - 9439040 - Astoria, OR 28 mi47 min W 6 G 7 71°F 71°F1019.2 hPa (-1.3)
46243 - Clatsop Spit, OR - 162 28 mi47 min 61°F4 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi57 min N 14 G 16 62°F 61°F4 ft1020.8 hPa (-1.0)61°F
46T29 40 mi37 min N 12 G 14 63°F 63°F4 ft1021.5 hPa61°F
46248 - Astoria Canyon, OR (179) 43 mi47 min 63°F4 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi52 minNW 1310.00 miFair70°F61°F73%1019.6 hPa

Wind History from AST (wind in knots)
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Last 24hrSW4W3W3CalmS3S3SE4SE3SE4CalmSE3CalmSE3CalmNE3N8NW6NW7W7NW9W11NW13NW10NW13
1 day agoW4W4CalmCalmS3SE3SE3SE3SE3SE3SE3SE3SE3E3NE5W3W6SW7W9W8W8W7W5W7
2 days agoW9SW5SW5S4S3S3CalmS8S5S6S5SE5S4SW5SW6W9S6SW7W11SW8SW9SW7W5W5

Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
Click for Map
Sat -- 05:04 AM PDT     Moonrise
Sat -- 05:47 AM PDT     Sunrise
Sat -- 07:30 AM PDT     -1.20 feet Low Tide
Sat -- 01:26 PM PDT     6.23 feet High Tide
Sat -- 07:15 PM PDT     1.72 feet Low Tide
Sat -- 08:23 PM PDT     Moonset
Sat -- 08:55 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.37.86.64.92.91.1-0.3-1.1-1.1-01.73.75.36.16.15.44.43.22.21.723.25.16.9

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
Click for Map
Sat -- 05:05 AM PDT     Moonrise
Sat -- 05:48 AM PDT     Sunrise
Sat -- 06:29 AM PDT     -1.60 feet Low Tide
Sat -- 01:02 PM PDT     6.82 feet High Tide
Sat -- 06:15 PM PDT     2.31 feet Low Tide
Sat -- 08:23 PM PDT     Moonset
Sat -- 08:55 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
97.963.71.4-0.5-1.5-1.5-0.51.23.25.16.46.86.45.44.12.92.32.63.65.278.5

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 (22,6,7,8)
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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 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.