Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Astoria, OR

Version 3.4
What's New / NOTES
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 5:25AMSunset 8:51PM Thursday May 25, 2017 11:12 AM PDT (18:12 UTC) Moonrise 4:54AMMoonset 7:50PM Illumination 0% Phase: New Moon; Moon at 0 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- 856 Am Pdt Thu May 25 2017
.small craft advisory for rough columbia river bar in effect from 4 pm this afternoon to 7 pm pdt this evening...
.small craft advisory for rough columbia river bar in effect from late tonight through Friday morning...
In the main channel..Combined seas around 7 to 8 ft today and 6 ft tonight. However...seas temporarily build to around 10 ft with breakers possible during the ebb around 530 pm this evening...and to around 10 ft with breakers during the very strong ebb around 545 am early Friday morning.
PZZ200 856 Am Pdt Thu May 25 2017
Synopsis for southern washington and northern oregon coast.. High pres over the waters with low pres inland through early next week. A weather system is possible around the middle to latter part of next week.

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 251629
afdpqr
area forecast discussion
national weather service portland or
927 am pdt Thu may 25 2017

Synopsis An upper level trough will reside over the pacific
northwest through Thursday. There remains a slim threat of late day
thunderstorms Thursday near the crest of the north oregon and south
washington cascades. High pressure returns Friday for drier,
sunnier, and warmer weather. Warm and dry conditions continue through
the holiday weekend and early next week. There is a slim threat of
late-afternoon and evening thunderstorms over the higher cascades
Monday through Wednesday.

Short term Today through Saturday... Only a few minor adjustments
to sky cover portion of the forecast this morning to better reflect
trends. Some pockets of lower clouds remain in the valleys northern
cascade foothills, along the long beach peninsula south to youngs
bay, around the portland metro area, and south of eugene. Otherwise,
skies largely remain clear this morning and the locations still in
clouds will see gradually clearing skies by late this morning. Have
maintained a slight chance of an afternoon thunderstorm near the
crest of the cascades from about mt. Hood northward. Models continue
to indicate a decent amount of instability, but somewhat limited
moisture so confidence remains on the lower side that coverage will
be anything other than extremely isolated. Remainder of previous
discussion remains valid and follows below. Cullen
models are in agreement with 850 mb temps warming to around 9-10 deg
c this afternoon, which is a little bit warmer than previous runs, so
warmed high temperatures a degree or two. Models keep inland areas
generally clear tonight into Friday morning with some clouds along
the coast. With an additional 3 to 5 deg c of warming at 850 mb
Friday, expect temperatures to continue to warm, likely into the 80s
inland.

Models continue to suggest a south stratus surge up the coast
beginning Fri evening and continuing into Sat morning, which will
keep temperatures along the coast, particularly south of about
tillamook, cooler during the day Saturday. Outside of the stratus
surge, temperatures will warm another few degrees with the upper
ridge axis overhead, and potentially into the mid 80s in some inland
areas. Bowen

Long term No changes. Previous discussion follows... Saturday night
through Wednesday. The models are in general agreement through about
mon or Mon night with an upper ridge dominating the weather and
keeping surface conditions warm and dry. Will see above-normal
daytime temperatures potentially approaching 90 degrees again inland
sun and memorial day. Removed thunder from the cascade crest Sunday
afternoon as models are backing off on instability. However, kept
thunder threat Mon with better instability and model QPF showing
indications of a convective pattern.

Models start to diverge Mon night and tue. The GFS shows a short-wave
disturbance reaching the area tue, which would bring a deeper marine
layer and result in a more stable air mass. But the ECMWF holds the
500 mb ridge axis over the area tue, for a continued slim threat of
cascade thunderstorms. Kept the threat of thunderstorms south of mt.

Jefferson Tue as the ECMWF seems to have done better recently with
the timing of the ridge breaking down. By Wednesday, both the GFS and
ecmwf show the ridge axis over the rockies and locally south to
southwesterly 500 mb flow, which may support more thunder along the
cascade crest, so added a slight chance of thunder Wednesday
afternoon and evening, mainly from about mt. Jefferson south. Bowen

Aviation Stratocumulus deck is beginning to thin out over the
north willamette valley andVFR conditions should prevail by 17z
or 18z at most TAF sites. The cascades will likely see some
showers or thunderstorms develop and spread north to south this
afternoon and evening but should miss all TAF sites. Conditions
tonight will be mostlyVFR, with any fog or low clouds inland
patchy and forming late. Along the coast there could be some low
stratus and fog later tonight with local ifr conditions.

Kpdx and approaches... MVFR CIGS lift toVFR in the next hour or
two andVFR conditions will remain through the period. Bentley

Marine Winds have eased below small craft advisory thresholds
early this morning and will decrease more this morning. The
pattern of higher pressure over the NE pacific and lower
pressure inland will persist into early next week, and winds
should stay below small craft advisory thresholds through that
time period. Next modest front looks to be around the middle of
next week at the earliest.

Steep, choppy seas continue to run 1-2 ft above model guidance
early this morning, and thus don't expect seas to drop below and
stay below 10 ft until later today. Have extended the small craft
advisory for hazardous seas as a result. Seas then stay below 10
ft for at least the next week. Pt

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for hazardous seas until 3 pm pdt this
afternoon for coastal waters from CAPE shoalwater wa to
florence or out 60 nm.

Small craft advisory for rough columbia river bar from 4 pm
this afternoon to 7 pm pdt this evening.

Small craft advisory for rough columbia river bar from 4 am to
8 am pdt Friday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 5 mi54 min W 6 G 8 52°F 58°F1012.6 hPa
46243 - Clatsop Spit, OR - 162 15 mi72 min 56°F9 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 34 mi82 min NW 5.8 G 7.8 53°F 53°F12 ft1013.8 hPa (+0.0)46°F
TOKW1 - 9440910 - Toke Point, WA 36 mi54 min WSW 4.1 G 5.1 53°F 56°F1013.6 hPa
46T29 39 mi32 min NNW 5.8 G 9.7 53°F 54°F1014.2 hPa46°F
46248 - Astoria Canyon, OR (179) 42 mi72 min 54°F11 ft
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 44 mi54 min 54°F1012.5 hPa
LOPW1 - 9440422 - Longview, WA 48 mi54 min 55°F1012.5 hPa

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR3 mi17 minNNW 710.00 miA Few Clouds58°F46°F67%1012.6 hPa

Wind History from AST (wind in knots)
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Last 24hrNW13
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NW12NW12NW12NW12NW7NW5NW7NW9W5NW7W3CalmCalmSE3SE4SE4S3CalmNW3N5N7
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2 days agoNW7N7NW6NW15
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NW16NW14NW5CalmSW4W4W9NW8NW7W3NW8NW9NW11NW10NW10NW12NW14

Tide / Current Tables for Astoria (Youngs Bay), Columbia River, Oregon
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Astoria (Youngs Bay)
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Thu -- 12:54 AM PDT     9.70 feet High Tide
Thu -- 05:32 AM PDT     Sunrise
Thu -- 05:54 AM PDT     Moonrise
Thu -- 07:50 AM PDT     -1.34 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 02:09 PM PDT     7.87 feet High Tide
Thu -- 07:41 PM PDT     1.82 feet Low Tide
Thu -- 08:49 PM PDT     Moonset
Thu -- 08:53 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.39.797.24.82.40.4-0.9-1.3-0.61.23.45.57.17.97.56.24.532.11.92.74.56.6

Tide / Current Tables for Chinook, Baker Bay, Washington
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Chinook
Click for Map
Thu -- 12:37 AM PDT     9.23 feet High Tide
Thu -- 05:32 AM PDT     Sunrise
Thu -- 05:54 AM PDT     Moonrise
Thu -- 07:12 AM PDT     -1.48 feet Low Tide
Thu -- 12:46 PM PDT     New Moon
Thu -- 01:52 PM PDT     7.49 feet High Tide
Thu -- 07:03 PM PDT     2.06 feet Low Tide
Thu -- 08:50 PM PDT     Moonset
Thu -- 08:53 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
9.19.185.93.41.1-0.6-1.5-1.20.1245.97.17.56.85.43.82.62.12.43.65.47.2

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 (14,3,4,5)
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Ground Weather Radar Station Portland, OR
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weather_mapweather_map weather_map

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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.