Monday, August3, 2020
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Marine Weather and Tides
Yakima, WA

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 5:44AMSunset 8:31PM Monday August 3, 2020 11:24 AM PDT (18:24 UTC) Moonrise 8:04PMMoonset 4:28AM Illumination 100% Phase: Full Moon; Moon at 14 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 031720 AAA AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 1020 AM PDT Mon Aug 3 2020

Updated Aviation Discussion

UPDATE. Satellite showing clear skies on the eastern side of the Cascades this morning, with a pretty decent marine layer west of the WA Cascades. Today, region will be under a weakening dry westerly flow aloft, with clear skies expected to continue through tomorrow. Breezy conditions will develop through the Cascade gaps this afternoon. With coastal soundings showing a decently deep moisture profile, have decided to bump up winds in the Kittitas valley and Columbia Gorge for this afternoon. Otherwise, forecast is on track. Lawhorn/82

AVIATION. 18Z TAFs . CLR skies and winds less than 15 kts are expected. There will be gusts around 20-25 kts this afternoon and evening at DLS, RDM, and PDT. Wister

PREV DISCUSSION. /issued 457 AM PDT Mon Aug 3 2020/

SYNOPSIS . Quiet and seasonably warm start to week gives way to storm chances in Oregon Wed afternoon and windy conditions Thu before a late week cool off.

SHORT TERM . Today through Thursday morning . Today to be near seasonable August day with highs in the low 90s in the Basin, upper 70s mountains. RHs to be dry in lower elevations, but not quite critical. Winds to be light with usual afternoon breeziness in Columbia Gorge and Kittitas Valley. Tuesday to be much of a copycat of Monday with slightly more warmth and less RH as quick ridging tries to build behind our exiting trough. Wednesdays weather to focus on cutoff low ejecting out of NE California toward central Idaho. Though this is a rather benign feature, conditional instability lent from summers heat combined with modest synoptic lift is likely to create isolated storms in the corridor of elevated terrain from central Oregon to Wallowa County. Still a little early for shorter range guidance but model guidance available suggests a few strong pulse storms initiating SW to NE along southeast CWA border. Lightning to ease early Thu morning but thinking advected moisture from previous storms and continued progress of shortwave trough overnight may promote shower activity and a few rumbles of thunder in the Blue Mtns and foothills, Wallowa County, and possibly as far north and west as Tri Cities. 76

LONG TERM . Thursday evening into next week . Aforementioned shortwave and associated cutoff low will be 'kicked' by much broader trough anchored near Vancouver Island on Thursday. RHs are likely to be moist for August, but gusty to downright windy conditions are indicated in model guidance for late Thursday. Will be monitoring these winds for wind or fire highlights if winds trend stronger for the former or RHs trend quite a bit drier for the latter. This active trough pattern gives way to pleasant weak westerly flow Friday with cooler temps. Cutoff low in CA and approaching British Columbia kicker trough pattern almost repeats itself late Friday through Saturday but cutoff low feature will be much more removed to our SE and doesn't appear to be a major factor in our late week weather. Trough will drag another burst of winds across the area, likely Saturday night, before next week starts with another day or so of depressed temperatures. 76

PRELIMINARY POINT TEMPS/POPS. PDT 89 57 91 61 / 0 0 0 0 ALW 90 59 93 62 / 0 0 0 0 PSC 92 62 94 63 / 0 0 0 0 YKM 89 58 91 60 / 0 0 0 0 HRI 92 60 94 63 / 0 0 0 0 ELN 84 56 90 59 / 0 0 0 0 RDM 87 51 90 55 / 0 0 0 0 LGD 84 54 88 58 / 0 0 0 0 GCD 87 54 92 59 / 0 0 0 0 DLS 88 62 94 66 / 0 0 0 0

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

82/85


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Yakima Air Terminal - McAllister Field, WA3 mi31 minVar 310.00 miFair80°F48°F34%1018 hPa

Link to 5 minute data for KYKM

Wind History from YKM (wind in knots)
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Last 24hr5CalmE5CalmE3S4N5NW11NW9NW12NW11NW10NW12S4CalmCalmW4W3CalmNW4NW6NW10N73
1 day ago5NW8N4NW7N10NW12NW12NW83NE3CalmNW4CalmW3NW5NW4NW3SW3NW7W5W4CalmCalmNW3
2 days agoCalmSW6Calm4CalmW12W13
G21
NW15
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W7NW10N9NW10NW13Calm4N4W6SW4W4CalmNW85N7N6

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 (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 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.