Monday, April23, 2018 L-36.com


Marine Weather and Tides
Astoria, OR

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:07AMSunset 8:12PM Monday April 23, 2018 2:41 AM PDT (09:41 UTC) Moonrise 12:10PMMoonset 2:16AM Illumination 56% Phase: First Quarter Moon; Moon at 8 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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PZZ210 Columbia River Bar- 218 Am Pdt Mon Apr 23 2018
In the main channel..Combined seas 3 to 5 ft through Monday. However, seas will temporarily build to near 6 ft during the ebb around noon Monday, and near 6 ft during the ebb around 1245 am and 115 pm Tuesday.
PZZ200 218 Am Pdt Mon Apr 23 2018
Synopsis for southern washington and northern oregon coast.. Thermal low pressure along the coast will shift over the waters tonight. Northerly winds will veer northeasterly this evening and then easterly by Tuesday. Winds will be especially gusty west of the river gaps in the coast range. Low pressure moving north mid-week will bring a southerly wind reversal, possible gusty winds and fog/low clouds.

7 Day Forecast for Marine Location Near Astoria, OR
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location: 46.19, -123.85     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 230408 aaa
afdpqr
area forecast discussion
national weather service portland or
904 pm pdt Sun apr 22 2018

Synopsis High pressure over the region will maintain clear skies
through at least wed. Will see warming temperatures, with afternoon
highs quite a bit above normal for Mon through thu. Cooler air with
return of shower threat for later Thu into next weekend.

Short term Tonight (evening update)
clear skies and dry air mass over the region tonight. Temperatures
have already dropped into the middle 40s along the coast. Even
inland, temperatures have cooled to the middle 50s, though in the
upper 40s now at eugene. Like past few nights, will be chilly again
tonight, with overnight lows down in the lower to middle 30s for many
areas. Have updated forecasts for this change. rockey
Monday through Wednesday... Expect dry conditions through midweek as
an upper level ridge slowly moves across the region. Low level flow
will turn offshore tonight as a thermal induced trough builds north
just off the coast. Models tend to show the trough shifting onto the
coast during the afternoon mon, and a little inland during the late
day Tue and wed. Temps inland will warm into the 70s Mon as 850 mb
temps warm to around 8 to 12c, then are likely to top 80 at many
interior locations Tue and Wed as 850 mb temps warm to 14c Tue and
16c wed. At the coast, the offshore breezes early in the day should
allow for a quick warm up each day, but as winds turn back onshore
sometime in the afternoon, expect to see the diurnal temps rise cut
off. Of course timing for this is critical to hitting the high temp
forecasts, and right now it appears in general the southern parts of
the coast are likely to see the temps cut off earlier, likely
limiting highs there to the 60s, with 70s more likely along the
north part of the coast.

Long term Wednesday night through Sunday... The general idea of
the cutoff low off the north ca coast slowly approaching the coast
late in the week suggests some moisture spreading north in the
southerly flow aloft for increasing chances of showers beginning
late Thu or Thu night. The pattern with a SE flow aloft can also
suggest the possibility for thunderstorms, particularly over the
cascades, but for now will leave out the mention as GFS soundings
not indicating sufficient instability. Temps will be cooling back
down closer to normal as onshore flow resumes. While models begin to
show more significant differences by the weekend, the net result is
still plaint of clouds, chances for showers, and seasonable temps.

Aviation Vfr conditions through 24 06. Winds will gradually
turn offshore tonight and more so after 23 19. Gusts 25-30 kt at
kpdx and kttd with gusts 20-25 kt elsewhere.

Kpdx and approaches...VFR conditions. Easterly gusts peak at
25-30 kt from 23 19 to 24 02. Jbonk

Marine Surface thermal trough will extend north Monday then
drift offshore Monday night. This will result in winds turning
increasingly offshore. Main concern will be wind gusts of 20 to
25 kt possible downwind of the coastal river gaps including the
mouth of the columbia river. A long period westerly swell will
arrive around this time and it will be interesting to see how
the winds and swell will interact. Would expect waves to stand up
and become steep. As of now, wave guidance indicates seas will
not reach 10 feet or become square with 7 second periods or
greater, but have a gut feeling this will be worth paying close
attention to.

A southerly wind reversal may develop towards the
middle to latter half of this week with seas likely remaining
under 10 ft. Small craft advisory level winds, could return
towards the weekend, as a front moves into the north oregon and
south washington waters. Jbonk

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 3 am pdt Monday for
coastal waters from cascade head or to florence or out 60 nm.

Small craft advisory for hazardous seas until 11 pm pdt this
evening for coastal waters from cascade head or to
florence or out 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 5 mi42 min ENE 2.9 G 5.1 48°F 51°F1025.6 hPa (+0.0)
46243 - Clatsop Spit, OR - 162 15 mi42 min 51°F5 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 34 mi52 min NNE 16 G 18 51°F 51°F7 ft1026.1 hPa (-0.0)47°F
TOKW1 - 9440910 - Toke Point, WA 36 mi42 min E 7 G 8 46°F 53°F1026.7 hPa (+0.0)
46248 - Astoria Canyon, OR (179) 42 mi47 min 52°F8 ft
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 44 mi42 min 52°F
LOPW1 - 9440422 - Longview, WA 48 mi42 min 50°F1026.4 hPa (+0.6)

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR3 mi47 minSE 310.00 miFair41°F37°F89%1025.6 hPa

Wind History from AST (wind in knots)
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Last 24hrS3S4SE3E4CalmSE3NE3N5NW5NW7NW11NW10NW16
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1 day agoW8W10W6W3NW6W3CalmN4--N7N10W8W11N11NW11NW12NW12NW11N7N6N8S3SE3SE3
2 days agoCalmSE3S3SE3SE4CalmCalmCalmCalmW3W533W10W11SW7S8S6S7S10S11
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Tide / Current Tables for Astoria (Youngs Bay), Columbia River, Oregon
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Astoria (Youngs Bay)
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Mon -- 01:48 AM PDT     3.17 feet Low Tide
Mon -- 03:15 AM PDT     Moonset
Mon -- 06:14 AM PDT     Sunrise
Mon -- 07:34 AM PDT     7.71 feet High Tide
Mon -- 01:10 PM PDT     Moonrise
Mon -- 02:49 PM PDT     0.29 feet Low Tide
Mon -- 08:13 PM PDT     Sunset
Mon -- 09:30 PM PDT     7.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
43.43.23.74.75.977.67.675.74.22.61.40.50.30.823.456.37.17.16.4

Tide / Current Tables for Chinook, Baker Bay, Washington
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Chinook
Click for Map
Mon -- 01:10 AM PDT     3.57 feet Low Tide
Mon -- 03:16 AM PDT     Moonset
Mon -- 06:14 AM PDT     Sunrise
Mon -- 07:17 AM PDT     7.34 feet High Tide
Mon -- 01:10 PM PDT     Moonrise
Mon -- 02:11 PM PDT     0.35 feet Low Tide
Mon -- 08:14 PM PDT     Sunset
Mon -- 09:13 PM PDT     6.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.93.63.74.45.36.377.37.26.34.93.31.90.90.40.61.42.645.36.46.86.65.9

Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for Portland, OR (5,6,7,8)
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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.