Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
St. Helens, 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 7:18AMSunset 4:35PM Tuesday November 21, 2017 1:23 PM PST (21:23 UTC) Moonrise 9:59AMMoonset 7:19PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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- 904 Am Pst Tue Nov 21 2017
.small craft advisory for rough columbia river bar in effect from 4 pm this afternoon to 8 pm pst this evening...
.small craft advisory for rough columbia river bar in effect from 4 am Wednesday morning through 10 am Wednesday morning...
In the main channel..Combined seas around 5 ft this morning, then 8 to 9 ft this afternoon and tonight. However, seas temporarily near 13 ft with breakers likely during the ebb around 615 pm today, and to 12 ft with breakers likely during the ebb around 645 am Wednesday.
PZZ200 904 Am Pst Tue Nov 21 2017
Synopsis for southern washington and northern oregon coast.. A warm front over the south oregon coastal waters will lift north across the region today, and across washington coastal waters this evening. Lower pres will remain well offshore through Thu. But, cold front will slowly shift across coastal waters later Wed and Wed night, moving onshore Thu am.

7 Day Forecast for Marine Location Near St. Helens, OR
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location: 45.87, -122.8     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 211752
afdpqr
area forecast discussion
national weather service portland or
952 am pst Tue nov 21 2017

Synopsis Wet and unsettled weather will continue this week. A warm
front was lifting north through northwest oregon and southwest
washington this morning, ushering in more rain. Expect some windy
conditions near the coast this afternoon. A trailing cold front will
linger over the forecast area tonight and Wednesday for more rain,
especially near the coast and in the north interior areas. Snow
levels in the cascades will remain relatively high. The next cold
front sweeps through on thanksgiving with snow levels in the cascades
lowering close to the passes Thursday night and Friday. Look for some
lingering showers Friday before the next system arrives on the
weekend. Look for snow levels lowering back near the cascade passes
again Sunday night and Monday.

Short term Today through Thursday... National weather service
doppler radar shows precipitation over much of southwest washington
and northwest oregon associated with a warm front the was moving
north through the forecast area. The freezing level was 10300 feet at
salem this morning, so it is pretty much rain everywhere except on
the higher peaks. The warm front is forecast to move north later
today and tonight, but a trailing cold front will then be draped over
the area tonight and Wednesday, with the greatest likelihood of rain
along the coast and in the north interior areas as we get further
into Wednesday.

The models still show a good amount of wind south of the warm front
over the coastal waters as we go through the day, with the peak this
afternoon. We should see some good winds along the coastal headlands
and beaches, but it is not clear whether we can reach warning
criteria. Will stay with the current forecast of just under warning
criteria for now for the beaches and headlands. We will also see some
east wind through the gorge due to the easterly gradient induced by
the associated surface low out between 130w and 140w. The east winds
will be strongest today, but linger for a couple of days.

The next cold front approaches the coast Wednesday night and moves
through the forecast area midday on thanksgiving. Snow levels will
remain high initially with this system. The front will move east of
the cascades later in the day on thanksgiving, with lower snow levels
in its wake, possibly lowering to near cascade pass elevations
Thursday night and Friday. Tolleson

Long term No changes. Previous discussion follows...

Thursday night through Monday... We will be transitioning to showers
by Thursday night, which will be diminishing Friday. The models keep
speeding up the next system, which may arrive by Saturday, and then
may linger into Sunday. The next system is expected Monday. After a
brief drop in snow levels Friday mainly in the north part of the
forecast area, snow levels rise gain significantly Saturday before
dropping a bit again Sunday. May get a brief rise in snow levels
again Sunday night into early Monday at the leading edge of the next
system. Overall, the unsettled weather pattern continues.

Bishop tolleson

Aviation As the warm front lifts north across the region today, we
are generally seeing improving conditions at our terminals, though
still some pockets of MVFR conditions. Conditions should remain
predominantlyVFR through early this evening, until we start to
stabilize around 06-09z tonight. As we stabilize, will likely see
cigs sink to MVFR with pockets of MVFR visibility as well.

Predominantly MVFR conditions to persist into Wednesday morning.

Kpdx and approaches... PredominantlyVFR conditions through the day
today. CIGS will sink down this evening to MVFR around 08z.

Generally, east to southeast winds continue through tonight. -mccoy

Marine Warm front lifting north across the coastal waters today.

Already starting to see gale force winds creep into the buoys.

Generally strongest winds today will be over the outer waters, or 10
miles and farther offshore, but will see gusts 30 to 35 kt on the
inner waters at times as well. Wind will ease this evening, with
generally 25 to 30 kt gusts on the waters later tonight into wed.

Another front will approach the region later Wed into thu, with
another round of southerly gales at that time.

Seas building today, mostly due to gusty winds. So, will see choppy
seas today into this evening, with seas 8 to 10 ft early this am
building to 14 to 18 ft by early afternoon. Again, higher seas will
be farther offshore with the stronger winds. Though seas subside just
a tad later tonight, still stay in the 13 to 17 ft range through wed
night. -mccoy rockey

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Gale warning until midnight pst tonight 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 8 pm pst this evening.

Small craft advisory for rough columbia river bar from 4 am to
10 am pst Wednesday.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 18 mi54 min 49°F1012.9 hPa
ASTO3 - 9439040 - Astoria, OR 56 mi54 min ESE 1.9 G 6 56°F 50°F1010.5 hPa
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 63 mi54 min 52°F1012.6 hPa

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Scappoose Industrial Airpark, OR8 mi31 minSSE 410.00 miOvercast52°F51°F97%1013.8 hPa
Southwest Washington Regional Airport, WA18 mi28 minSE 1010.00 miOvercast52°F50°F93%1013.4 hPa
Pearson Airfield, WA19 mi31 minESE 410.00 miOvercast51°F50°F96%1014 hPa
Portland, Portland International Airport, OR21 mi31 minSE 810.00 miOvercast51°F48°F89%1013.9 hPa
Portland-Hillsboro Airport, OR24 mi31 minN 02.00 miFog/Mist50°F48°F93%1013.9 hPa

Wind History from SPB (wind in knots)
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Last 24hrNW4N6NW4CalmW3W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm5CalmS4SE4
1 day agoCalmS3SE3S7SE7SE3SE10SE10E10SE7SE12SE12SE9S9SE12S5E4SE5S3NW7W6NW63NW5
2 days agoSE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW4W3CalmCalmCalmSE7SE6SE5SE6SE9SE8S4Calm

Tide / Current Tables for Saint Helens, Oregon - IGNORE HEIGHTS
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Saint Helens
Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the

Tue -- 02:37 AM PST     -0.21 feet Low Tide
Tue -- 06:50 AM PST     7.57 feet High Tide
Tue -- 07:20 AM PST     Sunrise
Tue -- 09:58 AM PST     Moonrise
Tue -- 02:27 PM PST     3.19 feet Low Tide
Tue -- 04:33 PM PST     Sunset
Tue -- 05:49 PM PST     8.72 feet High Tide
Tue -- 07:19 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.40.4-0.1-01.84.56.87.67.36.65.84.94.13.63.23.55.688.78.47.56.34.83.3

Tide / Current Tables for Kalama, Washington - IGNORE HEIGHTS
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Kalama
Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the

Tue -- 01:48 AM PST     -0.21 feet Low Tide
Tue -- 06:13 AM PST     7.57 feet High Tide
Tue -- 07:20 AM PST     Sunrise
Tue -- 09:58 AM PST     Moonrise
Tue -- 01:38 PM PST     3.19 feet Low Tide
Tue -- 04:33 PM PST     Sunset
Tue -- 05:12 PM PST     8.72 feet High Tide
Tue -- 07:19 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.6-0-0.21.23.86.27.57.46.96.15.24.33.73.33.34.97.48.78.67.96.75.23.72.3

Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Portland, OR (16,3,4,5)
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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.