Friday, August23, 2019 L-36.com


Marine Weather and Tides
Chinook, WA

Version 3.4
NOTICE
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 6:21AMSunset 8:14PM Friday August 23, 2019 4:55 PM PDT (23:55 UTC) Moonrise 11:16PMMoonset 1:34PM Illumination 41% Phase: Third Quarter Moon; Moon at 23 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- 211 Pm Pdt Fri Aug 23 2019
In the main channel.. - general seas...1 to 3 feet through Friday. - first ebb...around 1115 pm Friday. Seas building to 4 feet. - second ebb...around 1130 am Saturday. Seas building to 4 ft. - third ebb...around 5 pm Saturday. Seas building to 4 ft.
PZZ200 211 Pm Pdt Fri Aug 23 2019
Synopsis for the southern washington and northern oregon coast.. High pressure over the waters with a thermal low along the north california and south oregon coast will continue through Friday. A trough temporarily weakens the high pressure during the weekend.


7 Day Forecast for Marine Location Near Chinook, WA
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location: 46.27, -123.95     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 232143
afdpqr
area forecast discussion
national service portland or
243 pm pdt Fri aug 23 2019

Synopsis Seasonable weather through this weekend, with areas of
morning clouds. Warmer weather is expected next week with interior
temperatures likely warming into the upper 80s to lower 90s.

Short term This afternoon through Tuesday... An upper trough
approaching british columbia is beginning to flatten the upper ridge
today for a more zonal weather pattern that will persist through
Sunday. A surface low associated with the upper trough to the
north will form a weak surface front that will brush by the south
washington coast and willapa hills on Saturday. This will result in
increased clouds along the coast and extreme SW washington, and
occasional light rain. Increased pops to chance for the southern
washington and northern oregon coasts, willapa hills, and coast
range. It looks like there's a decent chance at a few hundredths of
accumulation, although not sure if it will fall as drizzle or light
rain. Could even see a bit of drizzle on the eastern slopes of the nw
coast range, near banks, cornelius, and forest grove. This weak front
and clouds will also result in slightly cooler temperatures Saturday
afternoon. Seasonal, dry weather is expected for Sunday with clouds
returning to the coast and parts of the willamette
valley in the morning and clearing in the afternoon.

The upper ridge begins to amplifies on Monday, beginning a warming
trend. Latest model runs show thermal troughing developing over
western oregon on Monday, resulting in light offshore flow. This will
magnify the heating a little bit Monday if offshore flow develops
early enough in the day. Thermal troughing moves over the willamette
valley Tuesday, which is a typical local hot pattern. Upped
temperatures a few degrees, blending the ECMWF and nbm. The ECMWF is
the hottest model currently, but usually does pretty well with hot
temperatures. There is the potential that Tuesday could see the
hottest temperatures of the summer so far, but models have been a
little bit squirrelly over the past couple of days, so still not
completely confident in actual temperatures. Either way, it looks
hot. Bowen

Long term Tuesday night through Friday... Wednesday looks much the
same as Tuesday in the upper levels, but at the surface, the thermal
trough moves offshore. Models are actually showing kind of a
splitting of the thermal trough and the beginnings of a
southwesterly push, which complicates temperatures. For most areas,
Wednesday will likely be similarly hot to Tuesday, but there's some
chance that the southern portion of the forecast area will cool
Wednesday. Models show the upper level remnants of a long-deceased
tropical system interrupting the ridging Thursday into Friday, which
should bring at least a few degrees of cooling and end the offshore
flow. Overall for next week, it still looks hot, as it has for a few
days now, but still not confident in exactly how hot. Bowen

Aviation MVFR CIGS return to the coast late this afternoon but
more likely tonight. Expect some -ra or -dz from about ktmk
northward on the coast after 11z Saturday. For inland locations,
expectVFR conditions through 18z Saturday.

Kpdx and approaches...VFR. Light winds becoming northwest around 10
kt later this afternoon through evening hours. Mh bowen

Marine High pressure continues to weaken through the weekend as a
weak trough moves through. The high pressure strengthens again late
this weekend and into next week. This will cause a return to a more
typical summer pattern.

Seas 4 to 6 ft through the weekend. Seas will build some each
afternoon and evening with increasing northerly winds. Seas likely to
reach 8 or even 9 ft early next week with strongest winds. 42

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46243 - Clatsop Spit, OR - 162 10 mi55 min 65°F4 ft
ASTO3 - 9439040 - Astoria, OR 11 mi55 min E 1.9 G 7 68°F 70°F1013.5 hPa (-0.6)
46096 12 mi75 min NNW 19 G 21 58°F 63°F1013.9 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 30 mi65 min NNW 16 G 18 63°F 63°F4 ft1014.8 hPa (-0.6)50°F
TOKW1 - 9440910 - Toke Point, WA 30 mi55 min NW 15 G 19 1014.2 hPa (-0.3)
46248 - Astoria Canyon, OR (179) 38 mi55 min 64°F4 ft
46211 - Grays Harbor, WA (036) 44 mi55 min 63°F3 ft
WPTW1 - 9441102 - Westport, WA 45 mi79 min NW 18 G 19 61°F 63°F1014.3 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 49 mi55 min 1013.8 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, OR8 mi2 hrsW 1110.00 miFair72°F57°F61%1013.5 hPa

Link to 5 minute data for KAST

Wind History from AST (wind in knots)
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Last 24hrNW11NW12NW12----N8--Calm----SE4E3Calm--SE5SE4CalmE4N8NW4N9N7W11NW15
1 day agoNW6NW11NW9--NW7--NW4CalmCalm--SE3S5--SE3CalmSE3Calm3NW6N7N8NW7W10NW11
2 days agoSW8
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Tide / Current Tables for Chinook, Baker Bay, Columbia River, Washington
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Chinook
Click for Map
Fri -- 12:30 AM PDT     1.15 feet Low Tide
Fri -- 06:24 AM PDT     Sunrise
Fri -- 07:13 AM PDT     5.18 feet High Tide
Fri -- 07:58 AM PDT     Last Quarter
Fri -- 12:07 PM PDT     2.47 feet Low Tide
Fri -- 02:33 PM PDT     Moonset
Fri -- 06:44 PM PDT     7.11 feet High Tide
Fri -- 08:11 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.21.62.53.44.34.95.254.43.52.82.52.63.24.25.46.477.16.65.542.6

Tide / Current Tables for Columbia River entrance (N. Jetty), Washington
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Columbia River entrance (N. Jetty)
Click for Map
Fri -- 12:22 AM PDT     1.12 feet Low Tide
Fri -- 06:25 AM PDT     Sunrise
Fri -- 06:59 AM PDT     4.45 feet High Tide
Fri -- 07:58 AM PDT     Last Quarter
Fri -- 11:59 AM PDT     2.31 feet Low Tide
Fri -- 02:34 PM PDT     Moonset
Fri -- 06:30 PM PDT     6.48 feet High Tide
Fri -- 08:11 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.21.62.33.13.84.34.54.23.732.52.32.53.145.166.46.45.84.83.42.3

Weather Map and Satellite Images
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wmap_P
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Portland, OR (19,4,5,8)
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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.