Monday, January21, 2019 L-36.com


Marine Weather and Tides
Astoria, OR

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:43AMSunset 5:02PM Monday January 21, 2019 9:45 AM PST (17:45 UTC) Moonrise 6:00PMMoonset 8:19AM Illumination 99% Phase: Full Moon; Moon at 16 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- 249 Am Pst Mon Jan 21 2019
.small craft advisory for rough columbia river bar in effect from this afternoon through this evening...
In the main channel.. - general seas...seas around 6 to 7 feet through Tuesday morning. - first ebb...around 445 am Monday. Seas building to 9 feet. - second ebb...very strong ebb around 5 pm Monday. Seas building to 10 feet with breakers likely. - third ebb...around 530 am Tuesday. Seas building to 8 feet.
PZZ200 249 Am Pst Mon Jan 21 2019
Synopsis for the southern washington and northern oregon coast.. High pressure will build over the waters today. The next frontal system will move across the waters Monday night and Tuesday. High pressure returns during the latter half of the 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 211532
afdpqr
area forecast discussion
national weather service portland or
731 am pst Mon jan 21 2019
short term discussion updated.

Synopsis Several storm systems traversing the region through the
middle of the week will bring periods of valley rain and mountain
snow before high pressure brings drier weather late in the week and
next weekend.

Short term Today through Thursday... Quick update to add some low-
end pops based on the presence of showers on radar this morning.

Also added fog to the south willamette valley as stratus there is
not as thick as originally thought. The previous short term
discussion follows. Bowen
water vapor satellite imagery early this morning reveals a large
shortwave trough centered over the great basin. A couple embedded
vort maxes are apparent on satellite imagery along the backside of
the trough. The first is located near the oregon california border.

This system is slowly dropping south-southeastward and will continue
to result in decreasing shower chances from north to south early
this morning. Areas that experience any breaks in cloud cover will
develop fog quickly this morning given the current low dewpoint
depressions and light winds found across the region. The second vort
max is weaker and located off the washington coast. This system will
drop southeastward across the area towards midday and could help
initiate a few light showers this afternoon, but any rain should be
spotty in nature. Shortwave ridging centered more squarely in the
eastern pacific will then push eastward towards the region and
result in a temporary dry period for most of tonight.

The aforementioned shortwave ridging will be initially low in
amplitude early this week. This will allow a series of weak fronts to
push into the pacific northwest during the first half of the week.

The first will come in the form of a warm front. This will spread
rain into our northwestern zones by daybreak on Tuesday. While our
northern zones will almost certainly see light rain for much of
Tuesday, whether it rains enough to wet the pavement around eugene
and across much of southern lane county looks like a flip of a coin
at this point. Either way, snow levels will initially start out near
2000 feet Tuesday morning before rising up towards 5000 feet Tuesday
night. Overall, QPF should be light enough to prevent a need for
winter wx headlines across the cascades, though. A trailing cold
front will then drop southward across the area late Tuesday night
and early Wednesday. A frontal rain band may bring a couple hours of
moderate rain as it drops southward, but few impacts are anticipated.

Models then agree shortwave ridging will build farther northward
Wednesday night into Thursday. This should bring a gradual end to any
rain chances across the area and there may be enough breaks in the
clouds to allow areas of valley fog to develop. Neuman

Long term Thursday night through Monday... Operational models and
most ensembles continue to suggest shortwave ridging will more or
less remain over the pacific northwest for the entire extended
forecast period. This should result in conditions remaining dry
across the forecast area during this time. Areas of valley fog should
develop each night and linger into each morning before giving way to
afternoon sunshine and near average temperatures for the date. There
are some hints that a shortwave trough dropping down the backside of
the upper level ridge could dive west of the continental divide. This
scenario would likely help to enhance east winds near the mouth of
the columbia river gorge Sunday night into Monday. It should be
noted that there may be enough of a north to south pressure gradient
Thursday and again on Sunday to prevent the need to issue air
stagnation advisories later this week and over the weekend. Neuman

Aviation A mixture of ifr, MVFR andVFR conditions across the
region this morning with fog and low clouds settling in. With
ample low level moisture and light winds, expect dense fog to
become more widespread this morning with most inland terminals
deteriorating to ifr conditions. The fog and stratus will
eventually lift to a MVFR deck during the late morning andVFR
later this afternoon as drier northerly flow arrives. At the
coast, primarily MVFR conditions through the morning hours, then
becomingVFR by midday or early afternoon.

Kpdx and approaches... Ifr with fog and stratus through 16-18z,
then slowly lifting to MVFR conditions by late morning.VFR by
21-22z as drier northerly flow establishes.

Marine Northerly winds over the waters today as the upper
level low to our south moves inland. Winds will be in the high
teens to around 20 kts today. May see some occasional gusts poke
above 20 kt in the far southern waters, but think they will be
rather isolated.

The next significant uptick in winds will be Monday night
through Wednesday morning with solid 25-30 kts wind gusts. Opted
to issue a small craft advisory for Monday night through early
Wednesday. These winds will ease later Wednesday, then expect
fairly benign winter conditions for the rest of the week
thereafter.

Seas will remain 7-9 ft through Monday night, then rise to around
10 to 13 ft Tuesday morning through Wednesday. Seas fall back
below 10 ft on Thursday. Tw

Pqr watches warnings advisories
Or... Coastal flood advisory from noon today to 3 pm pst this
afternoon for north oregon coast.

Coastal flood advisory from noon to 4 pm pst Tuesday for north
oregon coast.

Wa... Coastal flood advisory from noon today to 3 pm pst this
afternoon for south washington coast.

Coastal flood advisory from noon to 4 pm pst Tuesday for south
washington coast.

Pz... Small craft advisory for winds from 10 pm this evening to 4 am
pst Wednesday for coastal waters from CAPE shoalwater wa
to cascade head or out 60 nm.

Small craft advisory for winds from 4 am Tuesday to 4 am pst
Wednesday for coastal waters from cascade head or to
florence or out 60 nm.

Small craft advisory for rough columbia river bar from 3 pm
this afternoon to 7 pm pst this evening.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 5 mi27 min SE 4.1 G 5.1 40°F 42°F1024.7 hPa
46243 - Clatsop Spit, OR - 162 15 mi45 min 49°F6 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 34 mi55 min NNW 14 G 19 49°F 52°F7 ft1024.6 hPa (+2.9)39°F
TOKW1 - 9440910 - Toke Point, WA 36 mi27 min ENE 4.1 G 5.1 1024.8 hPa
46248 - Astoria Canyon, OR (179) 42 mi45 min 52°F8 ft
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 44 mi27 min 1026.2 hPa
LOPW1 - 9440422 - Longview, WA 48 mi27 min 1025.5 hPa

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR3 mi50 minE 59.00 miPartly Cloudy37°F36°F96%1024.4 hPa

Wind History from AST (wind in knots)
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Last 24hrE3CalmCalmCalmCalmCalmNE3CalmCalmCalmCalmCalmCalmCalmSE3SE4SE4SE3SE4CalmCalmCalmS4E5
1 day agoSW7S7SW7S9SW7SW8SW5S3SE3SE4E4CalmE3CalmE4E4E3SE3NE4CalmCalmCalmE3S3
2 days agoE8E6SE6SE6E10SE12E14
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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 -- 01:35 AM PST     8.23 feet High Tide
Mon -- 06:56 AM PST     2.98 feet Low Tide
Mon -- 07:49 AM PST     Sunrise
Mon -- 08:18 AM PST     Moonset
Mon -- 12:45 PM PST     10.31 feet High Tide
Mon -- 05:04 PM PST     Sunset
Mon -- 05:59 PM PST     Moonrise
Mon -- 07:53 PM PST     -1.40 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.988.17.35.94.43.433.5578.81010.39.47.55.12.60.5-0.9-1.4-0.71.13.4

Tide / Current Tables for Chinook, Baker Bay, Washington
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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 (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.