Wednesday, November14, 2018 L-36.com


Marine Weather and Tides
Seneca, 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 7:38AMSunset 5:24PM Tuesday November 13, 2018 10:28 PM MST (05:28 UTC) Moonrise 1:03PMMoonset 10:39PM 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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7 Day Forecast for Marine Location Near Seneca, OR
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location: 43.93, -118.64     debug


Area Discussion for - Pendleton, OR
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Fxus66 kpdt 140423
afdpdt
area forecast discussion
national weather service pendleton or
823 pm pst Tue nov 13 2018

Update An approaching front is spreading clouds across wa and
northern or this evening. Wa dot pass report and webcams do not
show any precipitation yet. With rising snow levels and weak warm
advection do not expect significant snow impacts but cold air
trapped on the east slopes may produce some freezing rain. NAM 0z
run does not show any precipitation until after 7 am. Amended
forecast to limit precipitation to slight chance tonight near the
cascade crest. Coonfield

Prev discussion issued 214 pm pst Tue nov 13 2018
short term... Tonight through Friday... Upper level ridge
currently overhead will continue to flatten ahead of an
approaching frontal system this evening. Patchy fog is expected to
return to the basin this evening with loss of heating, but with
increasing west-southwesterly flow aloft with downslope off the
cascades, and to a lesser extent the southern blues may curtail
coverage in their immediate vicinity. Weak warm air advection
ahead of the approaching frontal system early Wednesday morning
will spread precipitation chances across the washington cascades
and adjacent valleys. With snow levels rising through 4000 to 5000
ft across this area Wednesday morning do not expect any
significant snow impacts, however, cold air in cascade valleys
will result in a chance of light freezing rain for areas like
snowden, us-12 near rimrock, sr-410 near cliffdell and i-90 near
cle elum for a few hours Wednesday morning until surface
temperatures rise above freezing. A bulk of the cold air
advection with the aforementioned cold front slides north of the
area Wednesday night Thursday morning and looks unlikely to
completely scour out the near surface inversions across the
columbia basin, so will keep at least a mention of some patchy
morning fog there. Given somewhat weaker inversions thinner
potential stratus coverage with the flattening upper ridge have
trended the MAX temps in the basin toward a middle ground
representing a partial breakout to sunshine during the afternoon.

Temperatures away from the basin will continue to see fairly wide
diurnal swings with lows in the upper teens to lower 20s and highs
in the 50s. A backdoor cold front drops south across the area
Friday and this should serve to scour out any remaining
fog stratus across the basin as well as bringing rain chances to
the wallowas and blues foothills early Friday morning. Snow levels
with the front are around 6000 ft so do not expect any snow other
than on the highest peaks of the wallowas. Breezy gradient driven
winds will continue in the ladd pyles canyons near la grande
through early Wednesday. Peck
long term... Friday night through Tuesday. A dry northerly flow
aloft will follow the backdoor cold front on Friday. Rain and high
elevation snow showers over eastern or and far southeast wa on
Friday evening will end by midnight. High pressure will rebuild for
a dry and stable weekend. Fog, freezing fog and low clouds will
return and will blanket the columbia basin and surrounding valleys
with a potential for patchy fog in the mountain valleys. The 12z gfs
and ECMWF are flatter with the ridge (12z canadian maintains a high
amplitude ridge) compared to the previous runs and advertise a weak
shortwave Sunday night. The latest GFS introduces light
precipitation across south central wa and north central or while the
ecmwf is much weaker with the shortwave and shows no precipitation.

Will keep Sunday night dry for now but the upcoming shifts may
decide to add slight chance pops if future models come into
agreement. The ridge will completely flatten and shift eastward
Monday night and Tuesday. This will allow a low pressure trough
offshore to move inland and spread precipitation east of the
cascades on Tuesday. The ECMWF is slower with the breakdown of the
ridge and the shift to a southwest flow aloft compared to the gfs,
but both models would indicate a good chance of rain and high
elevation snow Tuesday night. Wister
aviation... 00z tafs... Visibilities have generally improved this
afternoon with modest heating despite low stratus. This will
likely prevail through sunset. Thereafter, stratus will slowly
settle with fog and freezing fog development expected again
overnight. This will lead to another night of ifr lifr ceilings
and visibilities for terminals east of kbdn krdm. Variable winds
of 8 knots or less will prevail through the period.

Preliminary point temps pops
Pdt 27 47 37 48 0 0 0 0
alw 28 44 39 49 0 0 0 0
psc 27 43 33 49 0 0 0 0
ykm 26 42 31 49 0 10 0 0
hri 28 42 35 51 0 0 0 0
eln 23 44 33 49 10 20 10 0
rdm 24 58 26 56 0 0 0 0
lgd 29 50 34 54 0 0 10 0
gcd 31 55 35 55 0 0 0 0
dls 33 48 38 53 0 10 10 0

Pdt watches warnings advisories
Or... None.

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

76 76 76


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burns Municipal Airport, OR29 mi35 minWSW 510.00 miFair22°F7°F52%1034.7 hPa

Wind History from BNO (wind in knots)
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Last 24hrW5W3CalmW3W3NW3CalmS3W3W3CalmW4SE3E11E7NE9E9E7E7E5N5CalmCalmW5
1 day agoNE6W4CalmCalmN3CalmNW4CalmW6CalmW33E6E5E7NE4E7NE10NE7NE9NE5CalmCalmCalm
2 days agoNW8W5CalmCalmCalmN3W4CalmCalmN4CalmSE3SE3Calm45S5S4S5NE4NE5W4SW5N4

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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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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Pendleton, OR (0,6,7,8)
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Ground Weather Radar Station Boise, ID
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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.