Wednesday, September20, 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 6:57AMSunset 7:13PM Wednesday September 20, 2017 9:34 AM PDT (16:34 UTC) Moonrise 6:23AMMoonset 6:53PM 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- 902 Am Pdt Wed Sep 20 2017
Today..NW wind 5 to 10 kt with gusts to 15 kt. Wind waves nw 3 ft at 4 seconds. W swell 9 ft at 11 seconds. Showers in the morning. Chance of tstms.
Tonight..NW wind 5 to 10 kt with gusts to 15 kt, backing to sw after midnight. Wind waves nw 3 ft at 4 seconds, shifting to the sw 2 ft at 4 seconds after midnight. W swell 8 ft at 10 seconds. Chance of tstms in the evening, then chance of showers and a slight chance of tstms after midnight.
Thu..S wind 5 to 10 kt with gusts to 15 kt, backing to ne in the afternoon. Wind waves S 3 ft at 4 seconds, shifting to the E 1 ft at 4 seconds in the afternoon. W swell 7 ft at 10 seconds. Chance of showers.
Thu night..N wind 5 to 10 kt, becoming ne after midnight. Wind waves ne 1 ft at 4 seconds. NW swell 7 ft at 10 seconds.
Fri..NE wind to 5 kt, backing to nw in the afternoon. Wind waves ne 1 ft at 4 seconds, shifting to the nw at 4 seconds in the afternoon. NW swell 6 ft at 9 seconds.
Fri night..NW wind 5 to 10 kt, becoming N after midnight. Wind waves N 1 ft at 4 seconds. NW swell 5 ft at 9 seconds.
Sat..N wind to 5 kt. Wind waves 1 ft. NW swell 4 ft.
Sun..N wind 5 to 10 kt. Wind waves 1 ft. W swell 4 ft.
PZZ200 902 Am Pdt Wed Sep 20 2017
Synopsis for southern washington and northern oregon coast.. A weak low pressure system moves south off the washington coast tonight and Thursday. High pressure spreads over the waters from the west during the latter part 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 201008
afdpqr
area forecast discussion
national weather service portland or
308 am pdt Wed sep 20 2017

Synopsis Another low will was moving into western washington and
northwest oregon this morning with another round of more steady rain
and some additional high cascade snow turning rather quickly into
showers and isolated thunderstorms today. Heavy rain is possible
around the columbia river northward this morning. The primary upper
trough low will linger over washington and oregon Thursday then
slowly move east by the weekend, with showers slowly decreasing. High
pressure builds in over the weekend and continues into early next
week for some great late september weather in store for the region,
with cool nights with patchy fog but mild sunny days.

Short term Today through Friday... As expected, the layered
moisture that was well offshore early Tuesday and moved toward
southern oregon Tuesday interacted with a northern cooler surface low
that moved toward the western washington and northwest oregon coasts.

The moisture spread northward and developed into an east-west
oriented deformation zone that has slow moved north overnight. It is
now along the columbia river northward, then will move eastward later
this morning and early this afternoon. Data in southwest washington
and around mount hood show the snow level runs between 5000 and 6000
feet and have issued a snow advisory for this morning until the
deformation zone moves east. To the south of mount hood and the
deformation zone, snow levels have risen and precipitation is mostly
rain until you get to pretty high elevations.

There are quite a few showers and thunderstorms over the coastal
waters that will spread onshore this morning and cover more of the
forecast area as the deformation zone moves eastward. Snow levels
will ease back down to 5000 to 6000 feet in the remainder of our
oregon cascades this afternoon as this occurs. Thus it will stay
pretty unsettled all day today. The upper jet will be in close
proximity for a while this morning, moving southeastward into
southeast oregon later today with decreasing vertical wind shear. The
best chance for any of the convection to be strong might be more this
morning than this afternoon.

An upper low develops in the south end of the parent upper trough on
Thursday, centered over south central oregon and northeast
california. We should see some showers develop in the northerly flow
on the back or west side of the low on Thursday as some energy drops
south and due to daytime heating. The low lingers over central and
eastern oregon Friday and we should again see some showers develop on
the back side of the low, especially over the cascades.

Will continue the flash flood watch for burn areas on the oregon side
of the columbia river gorge and the north and central oregon
cascades. Rainfall rates have not reached values yet that research
says results in flash flooding in burn scars, but plenty of rain has
fallen and will continued to be monitored. Tolleson

Long term Friday night through Tuesday... An upper ridge builds
over the NE pacific this weekend and slowly expands into the pacific
northwest early next week as the inland upper low finally but slowly
moves eastward. This will bring drying and warming to the area,
though the warming will be more of the fall variety than of the
summer variety as the ground is wetter and we will probably see areas
of radiational morning low clouds and fog as nights are lengthening
and cooling. The models show some energy riding over the upper ridge
to our north that may keep some low clouds along the south washington
and far north oregon coasts at times, especially in the nights and
mornings. Tolleson

Aviation Ifr conditions have come in a bit more widespread than
expected. Have made some changes to the tafs to reflect this change.

Otherwise will be monitoring the progression of the front through the
area to try and time the improvement to MVFR orVFR at each of the
terminals.

Kpdx and approaches... Combination of low end MVFR and ifr conditions
through sunrise until the front moves through. Bentley

Marine Pushed up the timing of the small craft advisory for winds
as the front has already pushed through buoy 89 with gusty nnw winds
and gusty pre-frontal winds at buoy 50. In addition, extended the
small craft advisory for seas for the outer waters through 12z
Thursday as it appears outer waters will stay around 10 feet through
much of the period.

Quieter marine weather is expected by late this week and into the
weekend as typical summertime northerlies return to the area.

Bentley

Pqr watches warnings advisories
Or... Winter weather advisory until 2 pm pdt this afternoon for
northern oregon cascades.

Flash flood watch until noon pdt today for cascades in lane
county-central columbia river gorge-northern oregon
cascades-western columbia river gorge.

Wa... Winter weather advisory until 2 pm pdt this afternoon for south
washington cascades.

Pz... Small craft advisory for winds until 2 pm pdt this afternoon
for coastal waters from CAPE shoalwater wa to cascade head
or out 10 nm-coastal waters from cascade head to florence
or out 10 nm-waters from CAPE shoalwater wa to cascade
head or from 10 to 60 nm-waters from cascade head to
florence or from 10 to 60 nm.

Small craft advisory for hazardous seas until 3 am pdt early
this morning for coastal waters from CAPE shoalwater wa to
cascade head or out 10 nm-coastal waters from cascade head
to florence or out 10 nm.

Small craft advisory for hazardous seas until 5 am pdt Thursday
for waters from CAPE shoalwater wa to cascade head or from
10 to 60 nm-waters from cascade head to florence or from
10 to 60 nm.

Small craft advisory for rough columbia river bar until 1 pm
pdt this afternoon.

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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 mi46 min 55°F1005.4 hPa
46096 26 mi124 min NNW 3.9 G 3.9 46°F 56°F1004.1 hPa
ASTO3 - 9439040 - Astoria, OR 28 mi46 min N 9.9 G 12 52°F 65°F1003.7 hPa
46243 - Clatsop Spit, OR - 162 28 mi34 min 56°F6 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 36 mi44 min NNW 9.7 G 14 52°F 57°F8 ft1004.8 hPa (+1.3)47°F
46T29 40 mi44 min N 7.8 G 12 53°F 58°F1005.3 hPa48°F
46248 - Astoria Canyon, OR (179) 43 mi39 min 58°F8 ft

Wind History for Garibaldi, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR23 mi39 minWSW 310.00 miOvercast51°F48°F89%1004.1 hPa

Wind History from AST (wind in knots)
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S7CalmSE7S6SE6E3S4SE6E34S4SW3SW3
1 day agoS8S9S7
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CalmS3S3SW3W6S3SE5CalmCalmSE3SE3W6S3S5S4S4S10

Tide / Current Tables for Nehalem, Nehalem River, Oregon
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Nehalem
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Wed -- 01:15 AM PDT     7.30 feet High Tide
Wed -- 07:00 AM PDT     Sunrise
Wed -- 07:23 AM PDT     Moonrise
Wed -- 08:13 AM PDT     0.02 feet Low Tide
Wed -- 01:49 PM PDT     7.16 feet High Tide
Wed -- 07:16 PM PDT     Sunset
Wed -- 07:52 PM PDT     Moonset
Wed -- 08:34 PM PDT     0.48 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.47.37.16.24.93.21.70.600.41.73.65.56.87.16.75.64.12.61.30.60.61.53.2

Tide / Current Tables for Brighton, Nehalem River, Oregon
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Brighton
Click for Map
Wed -- 12:51 AM PDT     8.09 feet High Tide
Wed -- 07:00 AM PDT     Sunrise
Wed -- 07:13 AM PDT     0.18 feet Low Tide
Wed -- 07:23 AM PDT     Moonrise
Wed -- 01:25 PM PDT     7.96 feet High Tide
Wed -- 07:16 PM PDT     Sunset
Wed -- 07:34 PM PDT     0.77 feet Low Tide
Wed -- 07:52 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.78.17.56.14.22.30.90.20.51.73.55.477.97.86.85.33.41.90.90.91.73.25.1

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.