Thursday, November15, 2018 L-36.com


Marine Weather and Tides
Elgin, 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 6:53AMSunset 4:22PM Thursday November 15, 2018 11:33 AM PST (19:33 UTC) Moonrise 2:13PMMoonset 12:00AM Illumination 53% 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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7 Day Forecast for Marine Location Near Elgin, OR
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location: 45.61, -117.91     debug


Area Discussion for - Pendleton, OR
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Fxus66 kpdt 151733
afdpdt
area forecast discussion
national weather service pendleton or
930 am pst Thu nov 15 2018

Short term West to northwest flow aloft over the region today
with partly cloudy skies. Observations showing areas of fog this
morning which should dissipate by afternoon. Winds today will be
light with highs in the upper 40s and 50s. Models continue to
indicate a cold front moving through the forecast area late
tonight into Friday. This will result in mostly cloudy skies.

Precipitation will be very light and mostly over the mountains.

Northerly winds behind the front should inhibit fog through
Saturday. 94

Aviation (18z tafs) Vfr conditions expected to prevail at most
terminals with light winds through the period. Morning fog along the
columbia will continue over the next couple of hours, with MVFR ifr
visibilities at kalw kpsc and kdls. This should improve by 20z to
22z. BrokenVFR ceilings to develop by this evening as a front
approaches from the north. 79

Prev discussion issued 212 am pst Thu nov 15 2018
short term... Today through Saturday night... Persistent upper
ridge will be suppressed to the south today with increasing nw
flow aloft over the region. On Friday into Saturday a sharpening
upper trough will drop sewd out of british columbia driving a cold
front across wa ore. This front does not have a lot of moisture
to work with so most of the rain showers will be confined to the
northeast mountains and wa cascade east slopes on Friday into
Friday evening. Did trend the forecast a bit towards the NAM which
does show a little QPF along the front across north central
oregon Friday evening but QPF amounts should be minimal at best.

By Saturday morning precipitation should be ending but need to
keep an eye on the oregon east slopes where some light rain snow
showers could occur in the nely upslope flow. Otherwise by
Saturday night or early Sunday the upper ridge becomes
reestablished over the pacific nw. Fog should not be as big of a
problem this morning compared to recent days but did include some
patchy wording in the columbia basin and adjacent valleys until
18z. Overall pattern does not look favorable for fog tonight
through Saturday but some of the model guidance is hinting at
some. So this will need to be analyzed further today. Certainly by
the second half of Saturday night there should be at least patchy
fog freezing fog lower valleys. 78
long term... Sunday through Friday... A high pressure system aloft
will dominate the weather for the first couple days of the extended
period with mostly clear skies in the mountains. There will be
valley and columbia basin inversions under the high pressure as
sinking air aloft strengthens the surface based inversions. So have
areas of fog and freezing fog over the lower valleys and basin. Fog
will mostly affect the higher elevations such as rieth ridge and the
horse heaven hills and where the stratus deck meets the slopes along
the mountains, especially the northern blue mountains. The upper
high will weaken and break down by Tuesday as a pacific trough
begins to move closer to the pacific northwest with a southerly flow
ahead of it. This will bring increasing higher clouds and some
mixing to help mix out the valley inversions and the low stratus
and or fog. However, the fog will be slow to dissipate as the models
do tend to mix out the inversions too quickly, and the fog stratus
will persist for most of Tuesday. After that precipitation will move
into the region from the west beginning by late Tuesday. The
precipitation will begin as steady stratiform rain and gradually
become showery as the week progresses. By the end of the week
precipitation will be mostly showers. Snow levels will range from
3000-4000 feet on Tuesday... Rising to 4000-5000 feet by Wednesday
and Thursday. Therefore there could be some snow in the higher
elevations during the latter half of the week, but at this time will
not mention any highlights that far out until snow amounts and snow
levels become more certain. The models diverge significantly by
Friday so made little change to the forecast that far out, but there
will still be a chance of showers (snow showers in the higher
mountains) on Friday. Winds will be mostly light through the entire
extended period. 88

Preliminary point temps pops
Pdt 52 36 47 29 0 10 20 10
alw 52 38 47 32 0 10 20 10
psc 50 37 48 30 0 10 10 10
ykm 51 34 50 28 0 10 10 10
hri 51 37 50 31 0 10 10 10
eln 50 36 49 28 0 10 20 10
rdm 57 28 57 28 0 0 0 10
lgd 53 34 50 30 0 10 20 10
gcd 55 34 53 31 0 0 10 10
dls 54 40 56 34 0 0 10 10

Pdt watches warnings advisories
Or... None.

Wa... Air stagnation advisory until 1 pm pst Friday for waz027.

94


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

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Tide / Current Tables for
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Tide / Current Tables for
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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 Pendleton, OR (14,3,4,5)
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Ground Weather Radar Station Pendleton, 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.