Sunday, December15, 2019
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Marine Weather and Tides
Yakima, WA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:37AMSunset 4:16PM Sunday December 15, 2019 3:27 AM PST (11:27 UTC) Moonrise 8:07PMMoonset 10:46AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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 Yakima, WA
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location: 46.61, -120.53     debug


Area Discussion for - Pendleton, OR
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FXUS66 KPDT 151045 AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 245 AM PST Sun Dec 15 2019

SHORT TERM. Today through Tuesday night . There will be a continued northwest flow over the region today as an upper level ridge off the coast will begin to move onshore today. There is one last small shortwave passing in the northwest flow that will generate a few showers over northeast Oregon and southeast Washington today with showers ending this evening. The upper level ridge will then be over the region Monday and Tuesday providing dry weather. The next upper level trough will begin to approach the coast late Tuesday increasing cloud cover. There will be some fog and stratus across the Lower Columbia Basin today with some freezing fog advisories in effect until 10am with some areas of dense fog. The developing ridge pattern means there will be more growth and spread of the fog and stratus through Tuesday as inversions strengthen under the ridge.

LONG TERM. Wednesday through Sunday . A weakening low pressure system will arrive Wednesday afternoon with increasing rain and snow across the region. QPF with this first system likely remains under a tenth of an inch. Snow levels as this first system moves through will range from 500-1000 feet over parts of the Washington Cascades and Wallowa Mountains to near 3000 feet over central Oregon with only minor snow accumulations possible.

Better chances for more widespread, impactful rain and mountain snow arrive Thursday afternoon and continue through Saturday morning. With a relatively mild and persistent southwest flow, snow levels expected to increase between 4500-5500 feet across Oregon and southeast Washington. For the Washington Cascades snow levels are expected to remain between 2000-3000 feet, where winter weather highlights may be needed. Models also hinting at the potential for cold air to remain trapped across lower elevations of the Kittitas/Yakima Valleys and portions of the lower Columbia Basin in Washington. With subfreezing temperatures in these areas overnight Thursday night and again Friday night, areas of light freezing rain will be possible.

By Sunday the upper level trough begins to weaken and shift south and east of the area. This will allow for a drying trend to end the weekend; however, slight chances for precipitation will remain for the Cascades and higher elevations of central and northeast Oregon. Richards

AVIATION. Areas of mvfr and ifr conditions can be expected especially at taf sites kykm . kalw . kpdt. Also taf sites kpsc will experience areas of mvfr and lcl ifr into Sunday morning before some improvement is likely around 18z.

PRELIMINARY POINT TEMPS/POPS. PDT 36 24 35 24 / 10 10 0 0 ALW 35 28 35 26 / 20 10 0 0 PSC 36 26 36 25 / 10 0 0 0 YKM 36 22 35 22 / 0 0 0 0 HRI 36 27 36 25 / 10 0 0 0 ELN 34 23 33 21 / 0 0 10 0 RDM 39 21 42 23 / 0 0 0 0 LGD 37 23 36 26 / 20 20 0 0 GCD 36 19 38 25 / 10 10 0 0 DLS 40 31 39 29 / 0 10 0 0

PDT WATCHES/WARNINGS/ADVISORIES. OR . Freezing Fog Advisory until 10 AM PST this morning for ORZ044- 507.

WA . Freezing Fog Advisory until 10 AM PST this morning for WAZ026- 027-029.



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Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Yakima Air Terminal - McAllister Field, WA3 mi34 minWSW 40.75 miFog/Mist28°F26°F92%1018.2 hPa

Link to 5 minute data for KYKM

Wind History from YKM (wind in knots)
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Last 24hrW4NW4CalmW4CalmCalmCalmCalmE3CalmNE3E4E5E6CalmCalmE4CalmCalmCalmCalmSW3SW4SW4
1 day agoS4CalmCalmCalmCalmCalmW4W6CalmW4W4SW4SW3W3CalmCalmNW5W6W5W6NW4W5NW4Calm
2 days agoCalmCalmCalmW4CalmW3W4W3W7SW4W5CalmNE5S5SW46CalmE4E3CalmW4S33N3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_P
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 (6,6,7,8)
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Ground Weather Radar Station Pendleton, OR
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weather_mapweather_map weather_map

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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.