Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Ocean Park, WA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:31AMSunset 8:52PM Sunday May 20, 2018 6:20 PM PDT (01:20 UTC) Moonrise 10:00AMMoonset 12:18AM Illumination 36% Phase: Waxing Crescent; Moon at 6 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- 200 Pm Pdt Sun May 20 2018
In the main channel..Combined seas 3 to 4 ft through Monday. However, seas temporarily building to 5 ft during the ebbs around 1015 pm Sunday, 1030 am Monday, and 1130 pm Monday.
PZZ200 200 Pm Pdt Sun May 20 2018
Synopsis for the southern washington and northern oregon coast.. High pressure will remain offshore today, bringing a continuation of light northwesterly winds. The pressure gradient tightens starting Monday for increased northerly winds. Westerly swell increased midweek.

7 Day Forecast for Marine Location Near Ocean Park, WA
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location: 46.5, -124.02     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 202130
afdpqr
area forecast discussion
national weather service portland or
230 pm pdt Sun may 20 2018

Synopsis Onshore flow will weaken tonight and Monday, with much
less clouds and warmer temperatures for Mon and tue. However, the
upper low over the western CONUS will bring minor chance of showers
and perhaps a thunderstorm to the cascades for Wed through fri. Rest
of region should remain dry, though a tad cooler. A new low pres
system will arrive next weekend, with increasing chance of showers.

Flow aloft turns more southeasterly, so could even see a thunderstorm
just about anywhere later Sat through sun.

Short term Tonight through Wednesday... Pesky upper low that has
been sitting over the western usa will continue to ever so slowly
drift away from our area. This will take threat of showers with it,
though can not rule out a stray showers this afternoon into this
evening, mainly over the cascades. Otherwise, partly cloudy skies
this evening, with pleasant temperatures. Modest onshore gradient at
4 to 4.5 mb across the cascades. This also apparent via the breezy
west winds in the eastern columbia river gorge. These winds will ease
later tonight.

Onshore northwesterly gradients will allow for areas of cloud to
return later tonight, mainly along the coast and into the interior as
far south as salem. What is different for Monday is the surface ridge
effects. With surface ridge nudging into western washington, will see
more in way of northerly gradients for mon. This will contribute to
faster dissipation of clouds, with quite a bit of sunshine across
region. As such, should get afternoon temperatures into the 60s along
the coast, and middle to upper 70s inland.

Not much change for tue, with temperatures up a bit more, and lot
less in way of clouds. Even coast should see rather sunny day on tue.

May have a few cumulus over the oregon cascades, but flow not all
that impressive and with lack of moisture forcing, think any showers
will stay way out over southeast and south central oregon.

Then see bit of change as go into Tue night and wed. Upper low over
the great basin will drift northward towards oregon, this allows flow
aloft to back and become more southeasterly over good part of oregon.

Seems like main showers and isolated thunderstorms remain over
eastern oregon, but with the flow turning, can not rule out showers
and perhaps a thunderstorm over the cascades later wed. Elsewhere,
will have increasing onshore flow, not strong, but enough to get low
clouds back along the coast Tue night, and possibly into parts of the
interior late Tue night and wed. Low clouds should break quickly over
interior, with marine clouds burning back to the beaches by
afternoon. Will cool temps a tad to reflect the onshore flow, but
still in the lower to middle 70s inland. Rockey.

Long term Wednesday night through Sunday... The upper low over
nevada will gradually weaken as it lifts into the northern rockies
wed night and thu, with shower threat decreasing. However, a new
upper low will be approaching calif coast later Thu and fri. This
system looks to turn our flow more southerly aloft fri, with
continued south to southeasterly flow through good part of the coming
weekend. Weak disturbances rotating around the low will move up from
north calif into southern and central oregon. This will bring much
more unstable air to the region, along with decent chances for
showers and even thunderstorms. Models indicate the upper low will
lift up and across oregon later Sat night and sun. While have some
differences in models, as GFS lifts the low north across western
oregon and western washington on sun, while ECMWF trending to lifting
the low off across southeast oregon. The later would mean more
onshore flow across our area, with cooler temperatures but less
chances of showers for sun. If take GFS trend, would have much higher
chances of showers and thunderstorms. For now, will trend bit more
towards gfs. rockey

Aviation Vfr conditions across the board this afternoon as
even CIGS at the coast have risen above 3000 ft. ExpectVFR into
this evening, but MVFR will return tonight, first at the coast,
then inland by morning. Clouds should not only rise toVFR, but
actually scatter out more quickly Monday.

Kpdx and approaches... Mid level scattered layer of clouds will
remain through this evening. Then MVFR cig return overnight,
after 09z, but scatter out toVFR by 20z Monday. Bowen

Marine Seas rising very slowly today, currently 3 to 5 ft with
light northwesterly winds. The pressure gradient increases over
the waters tomorrow, with a chance for wind gusts above 20 kt
Monday evening and again Tuesday evening. Have issued a small
craft advisory for the Monday evening and overnight period. It
looks like there may be enough of a break in the winds Tuesday to
warrant two separate advisories rather than one continuous
advisory.

Stronger NW winds retreat farther offshore later this week,
bringing back benign conditions starting Wednesday. However,
west swell begins to increase around this time, bringing seas up
to 7 to 8 ft into Thursday, holding steady there through the end
of the workweek. Bowen

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds from 4 pm Monday to 3 am pdt
Tuesday for coastal waters from cascade head or to
florence or out 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TOKW1 - 9440910 - Toke Point, WA 15 mi50 min NW 8.9 G 12 56°F 59°F1019 hPa
46243 - Clatsop Spit, OR - 162 20 mi50 min 58°F4 ft
ASTO3 - 9439040 - Astoria, OR 24 mi50 min WNW 8.9 G 12 56°F 59°F1018.6 hPa
46211 - Grays Harbor, WA (036) 27 mi50 min 57°F4 ft
WPTW1 - 9441102 - Westport, WA 28 mi50 min NW 16 G 20 55°F 56°F1018.9 hPa
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 35 mi90 min NNW 12 G 14 54°F 57°F4 ft1019.3 hPa (-0.4)48°F
46248 - Astoria Canyon, OR (179) 42 mi55 min 58°F4 ft

Wind History for Toke Point, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR25 mi25 minNNW 125.00 miMostly Cloudy with Haze60°F50°F70%1018.5 hPa

Wind History from AST (wind in knots)
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Last 24hrW7W5W5W4W4W4W4W4SW3SW4CalmSW3W4NW6NW5NW8N9NW10NW8NW13NW13NW12NW12NW12
1 day agoW6W5NW3NW4CalmCalmCalmCalmCalmS3CalmCalmCalmCalmCalmCalmW3W7W8W9W9W10NW7W7
2 days agoN5CalmNW3NW3CalmN3CalmCalmCalmCalmCalmW3CalmNW3CalmNW3NW5NW5N5N5N6CalmW7W6

Tide / Current Tables for Nahcotta, Willapa Bay, Washington
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Nahcotta
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Sun -- 01:17 AM PDT     Moonset
Sun -- 05:25 AM PDT     10.88 feet High Tide
Sun -- 05:36 AM PDT     Sunrise
Sun -- 11:00 AM PDT     Moonrise
Sun -- 12:22 PM PDT     -0.95 feet Low Tide
Sun -- 07:00 PM PDT     9.55 feet High Tide
Sun -- 08:49 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.34.56.58.51010.810.79.67.54.92.40.4-0.8-0.61.13.55.87.79.19.59.17.86.44.9

Tide / Current Tables for Palix River, south fork, Willapa Bay, Washington
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Palix River
Click for Map
Sun -- 01:17 AM PDT     Moonset
Sun -- 05:25 AM PDT     8.88 feet High Tide
Sun -- 05:35 AM PDT     Sunrise
Sun -- 10:59 AM PDT     Moonrise
Sun -- 12:28 PM PDT     -1.36 feet Low Tide
Sun -- 07:03 PM PDT     7.76 feet High Tide
Sun -- 08:49 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.43.45.378.18.88.77.86.13.91.8-0-1.2-1.10.32.34.25.97.27.87.46.353.8

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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Wind Forecast for Portland, OR (21,6,7,8)
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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.