Thursday, February22, 2018 L-36.com


Marine Weather and Tides
Seaside, 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 6:59AMSunset 5:50PM Thursday February 22, 2018 2:58 PM PST (22:58 UTC) Moonrise 10:47AMMoonset 12:20AM Illumination 52% 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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PZZ250 Coastal Waters From Cape Shoalwater Wa To Cascade Head Or Out 10 Nm- 228 Pm Pst Thu Feb 22 2018
Tonight..N wind 10 to 15 kt, becoming ne 5 to 10 kt with gusts to 15 kt in the evening, then veering to se after midnight. Wind waves N 3 ft at 4 seconds, shifting to the se 2 ft at 4 seconds after midnight. W swell 7 ft at 13 seconds.
Fri..S wind 15 to 20 kt, becoming sw 20 to 25 kt in the afternoon. Wind waves sw 3 ft at 6 seconds. W swell 6 ft at 15 seconds. SEcondary swell nw 3 ft at 7 seconds. Rain.
Fri night..W wind 20 to 25 kt. Wind waves W 5 ft at 7 seconds. W swell 9 ft at 14 seconds. Rain likely.
Sat..NW wind 25 to 30 kt with gusts to 35 kt, easing to 20 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 14 ft with a dominant period of 11 seconds. Showers.
Sat night..W wind 20 to 25 kt, backing to sw after midnight. Gusts to 30 kt. Wind waves W 5 ft at 7 seconds. NW swell 12 ft at 12 seconds. Chance of showers.
Sun..W wind 20 to 25 kt with gusts to 30 kt. Wind waves 5 ft. NW swell 14 ft. Rain.
Sun night..W wind 20 to 25 kt. Wind waves 4 ft. NW swell 16 ft. Rain likely.
Mon..NW wind 10 to 15 kt. Wind waves 2 ft. NW swell 15 ft.
Tue..W wind 10 to 15 kt. Wind waves 3 ft. NW swell 11 ft.
PZZ200 228 Pm Pst Thu Feb 22 2018
Synopsis for southern washington and northern oregon coast.. Higher pres will remain over the ne pac. The next low and associated front will move S into the waters on Fri and Fri night, with another disturbance moving through Sat. Small craft advisory winds are likely for a while into this evening, and again Fri and Sat, getting close to gale force late Fri night and early Sat, and again late Sat night and early Sun.

7 Day Forecast for Marine Location Near Seaside, OR
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location: 46, -123.92     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 221741 aaa
afdpqr
area forecast discussion... Updated
national weather service portland or
940 am pst Thu feb 22 2018

Synopsis A cold airmass with low snow levels will hold over
the region through the coming weekend. One system is on its way out
this am, with some lingering snow showers that are decreasing. Dry,
but chilly tonight. Then increasing clouds again on fri, with another
round of precipitation spreading into the region during the
afternoon. Snow showers will stay over region on Saturday, and rather
wet system arriving on Sunday. While low elevation snow levels will
remain somewhat low, the cascades and even the coast ranges will see
significant snowfall this weekend.

Short term Today through Saturday... A low pressure system moved
onshore along the central oregon coast last night, bringing
accumulating snowfall to much of the cwa. The surface low is centered
over south-central oregon and the main impacts are now well to our
south. However, there is a surface trough trailing the main low that
is extending through the western portions of the willamette valley up
through the kelso longview area this morning. Some weak converge
along the trough axis is driving some continued light snow showers as
of 9 am that will likely continue through around midday. Little to no
accumulation is expected as surface temps are already beginning to
warm above freezing and should climb a few more degrees over the next
few hours. However, an NWS employee did report that some
accumulations were still occurring at around 1500 feet near scapoose,
so expect some light accumulations will continue for areas above
500-1000 ft. Also expect some lingering light showers over the
cascades and central oregon coast range into this evening as cyclonic
flow aloft continues on the backside of a departing upper level
trough. Otherwise, expect a drying trend today, with skies beginning
to clear from north to south this afternoon, allowing for
some melting of the snow. However, temps will likely top out in only
the mid to upper 30s for most of the lowlands due to the snow cover
and even colder temps aloft. Mostly clear skies tonight, with
temperatures dropping in the lower 20s for many areas, and even bit
colder in the cascades and hood river valley.

Next system will approach region on fri, with increasing clouds.

Models have slowed arrival of precipitation until the afternoon.

But, with snow levels around 300 to 700 feet, will see some more
snow for the higher terrain. Some chance may see brief accumulations
below that range, but think this rather low potential at this time.

Models show another short-wave impacting the area beginning late fri
night and sat. Model 850 mb temps expected to be -4 to -6c and there
appears to be enough over-water trajectory and south low-level flow
to keep snow levels just above the valley floors, generally 500 to
1000 ft across much of the area inland Sat morning. Should be rather
damp day, with rain at times in the morning through early afternoon.

Will see decent snowfall in the cascades. Pyle rockey

Long term Sat night through Wednesday... Rather wet system arrives
on Sunday. Snow levels up a bit higher, but still 1500 to 2500 feet.

Will see significant snow in the cascades, as well as the higher
coast range peaks and the cascades foothills. At this time, good
potential for one to two feet of new snow in the cascades. Unsettled
weather continues next week, with snow levels between 1500 and 2500
feet. rockey weishaar

Aviation The mix of ifr and MVFR conditions will be improving
from north to south across the area through mid afternoon to
predominantlyVFR conditions as drier air filters into the
region from the north and northeast. Coldest night of the year so
far tonight. Some patchy freezing fog possible with local ifr
conditions late tonight and Friday morning.

Pdx and approaches... Conditions will beVFR today as clouds
continue to decrease through the day. ExpectVFR conditions to
continue tonight with the coldest night of the year so far
possible tonight. A small chance of brief freezing fog around
sunrise. Pt

Marine North winds are above small craft advisory thresholds
over the waters this morning in the wake of a low that passed
through overnight. Winds will decrease from north to south across
the waters through the day today and through this evening. Seas
will drop below 10 ft as the winds ease as well.

The next system drops southward from the north during the day
Friday. The main low pressure area stays north of the waters near
vancouver island later Friday into Saturday wit small craft
advisory threshold winds, and even some possible gales late
Friday night and early Saturday. There is a lull later Saturday
and Saturday evening before another system drops south and brings
more small craft advisory threshold winds Sunday that could again
get close to gales.

This series of systems late Friday through the weekend has a nice
northwesterly fetch off the b.C. Coast that will likely lead to
seas in our coastal waters being well up in the teens through the
weekend. Pt

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 1 pm pst this afternoon
for coastal waters from CAPE shoalwater wa to cascade head
or out 60 nm.

Small craft advisory for hazardous seas until noon pst today
for waters from CAPE shoalwater wa to cascade head or from
10 to 60 nm.

Small craft advisory for winds until 10 pm pst this evening for
coastal waters from cascade head or to florence or out 60
nm.

Small craft advisory for hazardous seas until 6 pm pst this
evening for waters from cascade head to florence or from
10 to 60 nm.

Small craft advisory for rough columbia river bar until 11 am
pst this morning.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 16 mi40 min N 6 G 8 38°F 41°F1026.3 hPa
46243 - Clatsop Spit, OR - 162 19 mi58 min 45°F7 ft
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 31 mi40 min 46°F1026.3 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 32 mi68 min NE 5.8 G 9.7 38°F 47°F8 ft1027.2 hPa (+0.4)25°F
46248 - Astoria Canyon, OR (179) 39 mi33 min 49°F9 ft
TOKW1 - 9440910 - Toke Point, WA 49 mi40 min NE 4.1 G 8 37°F 43°F1027.4 hPa

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR11 mi63 minNNE 610.00 miOvercast39°F21°F48%1026.5 hPa

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Last 24hrE6SE5S4E6E3CalmS4E6E6CalmNE3E8NE8E9NE16
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1 day agoNE13NE5E5NE7E9NE10E8E8E10E5SE3E7E5SW4E8E7E4SE4CalmE5E6E5SE4N5
2 days agoNE5W8NW6CalmCalmS4E3CalmSE3SE4SE4E4SE3E7E7E4E5E5E5E8E7E6NE6E8

Tide / Current Tables for Seaside, 12th Avenue bridge, Necanicum River, Oregon
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Seaside
Click for Map
Thu -- 12:20 AM PST     Moonset
Thu -- 04:28 AM PST     5.60 feet High Tide
Thu -- 07:06 AM PST     Sunrise
Thu -- 10:47 AM PST     Moonrise
Thu -- 12:42 PM PST     0.45 feet Low Tide
Thu -- 05:33 PM PST     4.03 feet High Tide
Thu -- 05:52 PM PST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.91.93.34.75.55.55.24.53.62.61.70.90.50.51.12.23.33.943.73.12.41.71.2

Tide / Current Tables for Warrenton, Skipanon River, Columbia River, Oregon
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Warrenton
Click for Map
Thu -- 12:20 AM PST     Moonset
Thu -- 05:09 AM PST     8.60 feet High Tide
Thu -- 07:06 AM PST     Sunrise
Thu -- 10:47 AM PST     Moonrise
Thu -- 11:56 AM PST     1.31 feet Low Tide
Thu -- 05:52 PM PST     Sunset
Thu -- 06:20 PM PST     6.33 feet High Tide
Thu -- 11:39 PM PST     2.57 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.43.65.36.98.18.68.37.35.63.92.51.61.31.62.63.855.96.36.25.54.43.32.7

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 (17,4,5,8)
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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.