Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Jeffers Gardens, OR

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:05AMSunset 8:13PM Tuesday April 24, 2018 5:36 PM PDT (00:36 UTC) Moonrise 1:22PMMoonset 2:56AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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- 237 Pm Pdt Tue Apr 24 2018
In the main channel..Combined seas 2 to 4 ft through Wednesday. However, seas will temporarily build to near 6 ft during the ebbs around 2 am Wednesday morning, 215 pm Wednesday afternoon, and 145 am Thursday morning.
PZZ200 237 Pm Pdt Tue Apr 24 2018
Synopsis for southern washington and northern oregon coast.. Thermal low pressure over the waters will gradually weaken tonight, but expect mainly offshore flow to continue through Wed. Low pressure moving north mid-week will bring a southerly wind reversal Wed night and Thu, along with possible gusty winds and fog/low clouds. A weak front is expected over the weekend.

7 Day Forecast for Marine Location Near Jeffers Gardens, OR
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location: 46.18, -123.87     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 242140
afdpqr
area forecast discussion
national weather service portland or
241 pm pdt Tue apr 24 2018

Synopsis Strong high pressure over the region through midweek
will give way to an upper level low pressure system late in the
week. After a couple of sunny and warm days, showery weather returns
with the upper low, as well as more seaonal tempeatures lasting
through the weekend.

Short term Tonight through Friday... Low level offshore gradients
weakn some tonight as weak surface low pres shifts north into the
thermal induced trough postion along the coast. The area of low pres
remains primarily along the coastal region tonight through wed
night, perhaps allowing some marine clouds or fog to sneak north up
to the central oregon coast as winds turn weakly onshore at times.

Otherwise the rest of the region should remain mostly clear with
warm temps.

On thu, as the upper low off the north ca coast inches closer, the
surface trough finally make a more decisive move inland into the
cascades. This turns the low level flow onshore across most of the
forecast area, with a SW push that will spread cooler air first into
the south willamette valley, then spread north over the interior
through the rest of the day and into Thu evening. GFS remains
decidely quicker at spreading chances for showers inland Thu night,
but ultimately, with the sse flow aloft spreading moisture in aloft
and the inland movement of the marine push providing a low level
boundary, will see a chance for some showers spreading in Thu night.

Model soundings are not particularly favorable looking for deeper
convection Thu night, but with modest diffluence aloft in the sse
upper level flow, will continue to indicate a slight chance for
thunderstorms Thu evening maily over the cascades.

By Fri models have the upper low approaching the coast near the ca-
or stateline. A deep marine air mass is evident in model soundings
fri, coupled with some moist layers in the mid and upper levels.

This brings a general increase in the chances for showers, along
with a cooler marine air mass throughout the forecast area.

Long term Friday night through Tuesday... Models consistent in
showing the upper low progressing slowly across the pacific nw
through the early part of the weekend, augmented by another
shortwave attaching to the low Sat night and sun. This will keep a
decent chance of showers over the region into sun, which combined
with the low level onshore flow keeps temps a little below seasonal
normals. Sun night into Mon models in pretty good agreement that the
upper trough shifts east as a ridge of high pres presses in from te
west. This will allow temps to moderate some during the early part
of next week, while the chances for showers diminish.

Aviation MainlyVFR conditions are expected through the next
24 hrs. Marine stratus cloud to to work up the southern oregon
coast tonight, and there is some chance that ifr stratus will
develop at konp for a period overnight or early Wed morning.

Breezy offshore winds will continue through the day, but should
gradually weaken tonight.

Kpdx and approaches...VFR conditions through wed. Breezy
easterly wind gusts of 20-25 kt will continue through the
afternoon, then ease off tonight. Pyle

Marine Thermal low pressure over the waters is bringing breezy
offshore winds through the coastal gaps today, but gusts
generally less than 20 kt. The thermal trough will build
northward and weaken tonight. This may result in some 20 to 25 kt
gusts over pzz270 this evening. Based on the latest model
guidance, a small craft advisory for winds is being issued with
the afternoon fcst update. A weak southerly wind reversal may
push into the central waters tonight. Then a more substantial
southerly surge is expected Wednesday night and Thursday morning,
which will likely result in widespread fog and low clouds.

Showery low pressure returns for Friday into the weekend. A weak
front is expected to arrive over the weekend, which may bring a
period of small craft advisory winds.

Westerly swell has pushed seas into the 8 to 9 ft range today,
with dominant periods around 15 seconds. The seas should
gradually subside tonight, then remain in the 5 to 7 ft range
through the remainder of the week. Pyle

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 2 am pdt Wednesday for
waters from CAPE shoalwater wa to cascade head or from 10
to 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 6 mi48 min NNW 6 G 8.9 76°F 54°F1015.6 hPa
46243 - Clatsop Spit, OR - 162 14 mi36 min 53°F7 ft
46029 - COL RIVER BAR - 20NM West of Columbia River Mouth 33 mi46 min N 18 G 21 59°F 54°F9 ft1016.4 hPa (-1.4)45°F
TOKW1 - 9440910 - Toke Point, WA 37 mi48 min W 6 G 8 77°F 60°F1016.3 hPa
46248 - Astoria Canyon, OR (179) 41 mi41 min 54°F10 ft
TLBO3 - 9437540 - Garibaldi, Tillamook Bay, OR 43 mi48 min 56°F
LOPW1 - 9440422 - Longview, WA 49 mi48 min 53°F1016.1 hPa

Wind History for Astoria, OR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Astoria, Astoria Regional Airport, OR1 mi41 minENE 710.00 miFair80°F42°F26%1015.4 hPa

Wind History from AST (wind in knots)
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Last 24hrNE12E12E5E6E10N6E8E6E8E7E9E9E4E5NE7E14E15E12SE16
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1 day agoNW15NW12NW8NW3W4S4CalmSE3SE3E4E4E6E9E6NE5NE6NE8NE10NE13NE13NE13
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2 days agoNW12NW12NW11N7N6N8S3SE3SE3S3S4SE3E4CalmSE3NE3N5NW5NW7NW11NW10NW16
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Tide / Current Tables for Astoria (Port Docks), Oregon
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Astoria (Port Docks)
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Tue -- 03:20 AM PDT     2.90 feet Low Tide
Tue -- 03:55 AM PDT     Moonset
Tue -- 06:12 AM PDT     Sunrise
Tue -- 09:04 AM PDT     7.01 feet High Tide
Tue -- 02:22 PM PDT     Moonrise
Tue -- 04:07 PM PDT     0.36 feet Low Tide
Tue -- 08:14 PM PDT     Sunset
Tue -- 10:34 PM PDT     7.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.24.23.42.933.84.85.96.776.75.84.53.11.80.80.40.71.73.14.76.27.17.1

Tide / Current Tables for Tongue Point, Astoria, Columbia River, Oregon
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Tongue Point
Click for Map
Tue -- 03:23 AM PDT     2.90 feet Low Tide
Tue -- 03:55 AM PDT     Moonset
Tue -- 06:12 AM PDT     Sunrise
Tue -- 09:12 AM PDT     7.51 feet High Tide
Tue -- 02:21 PM PDT     Moonrise
Tue -- 04:10 PM PDT     0.36 feet Low Tide
Tue -- 08:14 PM PDT     Sunset
Tue -- 10:42 PM PDT     7.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.64.53.5333.84.96.177.57.36.34.93.420.90.40.61.73.24.96.47.57.7

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 (20,4,5,8)
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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.