Tuesday, October19, 2021
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Marine Weather and Tides
Kittitas, WA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:25AMSunset 6:08PM Tuesday October 19, 2021 3:20 PM PDT (22:20 UTC) Moonrise 5:07PMMoonset 5:15AM Illumination 99% Phase: Waxing Gibbous; 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 Kittitas, WA
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location: 47.12, -120.39     debug


Area Discussion for - Pendleton, OR
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FXUS66 KPDT 192133 AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 233 PM PDT Tue Oct 19 2021

SHORT TERM. Tonight through Thursday . Cloud cover is beginning to increase this afternoon ahead of an approaching cold front coupled with an upper trough. At the surface, the approaching cold has led to tightening pressure gradients across central OR, with locations in central OR and the eastern mountains beginning to see breezy southerly winds. Winds and precipitation chances will continue to increase through this evening into tomorrow morning as the cold front and upper trough move across the forecast area. The main band of rain with this coupled system will be associated with the cold front passage early tomorrow morning. That said, the moisture plume associated with this system is quite lacking, with most locations seeing less than 0.05 inches, around 0.15 inches in the Blues, and around 0.25 inches in the Wallowas and Cascades through tomorrow afternoon. Gusty southerly winds can be expected with the cold front passage overnight tonight as low level jet winds increase and mix down along the frontal boundary. The strongest winds can be expected across the eastern mountains, the Grand Ronde valley, and along the Blue Mountain foothills, with occasional gusts possible in the John Day Basin.

Precipitation chances and breezy winds will gradually diminish starting in the afternoon tomorrow as the upper trough and cold front exit into northeast WA. In the wake of this system, an upper level ridge will build over the region with dry conditions and light winds Wednesday night through Thursday morning. Breezy southerly winds will once again develop through central OR, the eastern mountains, and the Grande Ronde valley on Thursday as low level jet winds and pressure gradients strengthen ahead of the next weather system.

By late Thursday, the next in a series of cold fronts will move across western OR/WA and cross the Cascades overnight Thursday. The overnight cold front will once again allow for low level jet winds to mix down along the frontal boundary, especially along the eastern mountains and the Blue mountain foothills. A better moisture plume is associated with this system, and so better precipitation chances are expected across the mountains and the lower elevations. Snow levels will start off above 9,000ft as the system crosses the forecast area late Thursday, with most locations outside of the Cascade crests seeing a chance of rain. Lawhorn/82

LONG TERM. Friday through Tuesday . The long term portion of the forecast will be dominated by a wet weather pattern. Deterministic and ensemble mean guidance agree with this change to a wet pattern as a series of weather systems impact the forecast area during this stretch. Precipitation totals range from 0.5-1.0" possible in and around the Columbia Basin to upwards of 2-3 inches in the mountains. Main stem rivers are running low following the dry summer so no major flooding is expected as a result of the expected precipitation amounts. However, some localized flooding will be possible due to clogged street drains due to leaves or other accumulated debris. The first in the series of systems will impact the area Friday followed by another Saturday afternoon and night and another Monday and Tuesday with even more systems expected through the rest of the week. Snow levels will initially be above 7000 feet Friday but lower to around 5000-6000 feet late Friday through the weekend and then 4000 to 5000 feet late Monday into Tuesday. This will place most of the accumulating snow above most of the transportation pass levels at least through the weekend.

AVIATION. Previous Discussion . 18Z TAFs . VFR conditions expected into tonight but then lowering clouds and increasing chance of precipitation late tonight through early Wednesday with some MVFR possible. Winds will generally be light through this afternoon, with the exception of KRDM and KBDN where 10-15 kts with gusts of up to 30 kts is expected. Winds will increase overnight to include KALW and KPDT. Additionally, the potential for LLWS will exist from roughly 05Z on tonight at KPDT, KALW, KBDN and KRDM with southerly winds of 30-40 kts between 1-3 kft AGL.

PRELIMINARY POINT TEMPS/POPS. PDT 47 67 42 71 / 10 30 0 0 ALW 50 67 44 70 / 10 40 0 0 PSC 48 68 44 69 / 10 40 0 0 YKM 42 62 37 63 / 20 60 10 10 HRI 47 70 42 71 / 20 30 0 0 ELN 41 58 37 59 / 20 60 10 10 RDM 42 62 36 71 / 40 20 10 10 LGD 47 62 41 67 / 0 30 10 0 GCD 45 62 43 71 / 20 50 10 10 DLS 50 65 45 67 / 40 50 10 10

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

SHORT TERM . 82 LONG TERM . 91 AVIATION . 91


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ellensburg, Ellensburg Bowers Field, WA10 mi28 minSE 1210.00 miFair63°F36°F37%1011.7 hPa
Wenatchee - Pangborn Memorial Airport, WA22 mi26 minSSE 1010.00 miFair60°F38°F44%1011.8 hPa

Link to 5 minute data for KELN

Wind History from ELN (wind in knots)
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Last 24hrNW10NW16
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NW12NW14NW13NW12NW90N5NE5NE5E4NE5N30N3NE3SE30NE40S5S10SE12
1 day ago00N7W8NW8NW17NW16
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2 days agoE5--E3NE60E40E4N70E5E5N3000NE50E300W403

Tide / Current Tables for
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GEOS Local Image of PacificNorthwest    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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