Wednesday, August12, 2020
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Marine Weather and Tides
Seneca, OR

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:47AMSunset 8:55PM Wednesday August 12, 2020 5:52 PM MDT (23:52 UTC) Moonrise 12:03AMMoonset 2:54PM Illumination 34% Phase: Waning Crescent; Moon at 24 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 122340 AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 440 PM PDT Wed Aug 12 2020

Updated Aviation Discussion

AVIATION . 00Z TAFs . VFR conditions across all sites with mid to high level clouds beginning to clear out over eastern TAF sites this afternoon. Mostly few-sct mid to high level clouds will persist overnight, clearing tomorrow with SKC expected for most sites after 12Z. Breezy winds will weaken overnight becoming light, generally less than 10kts after 6Z at most sites. Diurnal cycle of breezy conditions will continue tomorrow, with winds rising to 10-15kts starting 17Z. Lawhorn/82

PREV DISCUSSION. /issued Issued by National Weather Service Spokane WA/

SHORT TERM . Today through Friday night. Generally fair weather and low sensible weather concerns in the short term with a warming trend that starts Friday. Further, breezy to locally windy conditions are expected to develop Thursday afternoon continuing into Thursday night. Latest IR/vis satellite imagery and surface obs depict partly-mostly cloudy skies overhead with lower ceilings in the mountains where there is some light rainfall. Of which, the latest radar display shows a few lingering light rain showers/sprinkles across the northeast Blue mountains, nearby foothills, and Wallowa county. Current thinking is this activity should continue to diminish and be over by the end of mid afternoon. Latest water vapor imagery shows a mid-level trough with a closed low over the northern British Columbia/Alberta border extending south across the Northwest CONUS with an amplified ridge upstream in the eastern North Pacific. The upper trough will lift north and east the next 24 hrs with the region remaining under the influence of cyclonic flow. Meanwhile, the upper high will be evolving east with modest 500 hPa height rises spreading into the area Thursday. This is expected to be followed by quasi-zonal flow overhead within the large scale pattern Friday, along with the development of a closed low offshore CA/West Coast. Overall, partly cloudy skies tomorrow followed by clear skies Friday with temperatures warming into the 80s, upper 80s in the Basin. Modest breezes tomorrow with gusts peaking 25-35 mph in the eastern Columbia Gorge onto parts of the OR Basin and in the Kittitas Valley; light winds expected Friday. 80/ET

LONG TERM . Saturday through Wednesday . The main feature driving weather across eastern Washington and northern Idaho through the extended period will be a powerful upper ridge of high pressure and return of hot conditions. This ridge will build from the Four Corners region westward into the Desert Southwest by early next week.

As rising heights overspread the Inland Northwest, expect large scale subsidence and continued dry conditions to make for a stretch of very hot weather beginning Saturday and lasting through at least Monday. High temperatures will easily climb into the triple digits across much of the Columbia Basin Sunday and Monday afternoons. Long range models, including ensembles of both the GFS and European are in very good agreement in handling this feature and threat of significant heat. In addition, with substantial daytime heating and weak southwesterly flow, the threat of isolated mainly mountain thunderstorms will enter the picture late Sunday afternoon and evening, and again Monday afternoon and evening. This would naturally lead to an increase in fire danger, so will have to keep a close eye on this threat as it draws near.

Toward the middle of next week, models diverge somewhat. The European suggests the ridge will remain anchored in place, with a continuation of dangerous heat. The GFS depicts a weakness in the ridge developing over the Pacific Northwest, allowing for an abatement of heat by the middle of the week. For now, will trend slightly above normal as the National Blend continues to paint an unseasonably warm pattern into the middle of the week.

PRELIMINARY POINT TEMPS/POPS. PDT 47 80 49 84 / 0 0 0 0 ALW 52 82 52 87 / 0 0 0 0 PSC 52 84 53 88 / 0 0 0 0 YKM 48 82 51 87 / 0 0 0 0 HRI 52 84 52 89 / 0 0 0 0 ELN 47 76 51 83 / 0 0 0 0 RDM 44 81 46 87 / 0 0 0 0 LGD 46 79 47 83 / 0 0 0 0 GCD 47 85 48 89 / 0 0 0 0 DLS 53 82 57 91 / 0 0 0 0

PDT WATCHES/WARNINGS/ADVISORIES. OR . None. WA . None.

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Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burns Municipal Airport, OR29 mi59 minNW 11 G 1710.00 miFair81°F26°F13%1012.1 hPa

Link to 5 minute data for KBNO

Wind History from BNO (wind in knots)
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1 day agoS3S8S7N11NW6W5W4W10W8NW7NW8E4N3W4CalmSE4E3SE5S5S7S10
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NW11N4CalmW5NW3CalmCalmCalmNE3NE5E4----44SW6--

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Pendleton, OR (19,4,5,8)
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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 numerous 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.