Yakima, WA Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Yakima, WA

April 23, 2024 1:55 AM PDT (08:55 UTC) Change Location
Sunrise 5:57 AM   Sunset 8:03 PM
Moonrise 7:12 PM   Moonset 4:45 AM 
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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.

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7 Day Forecast for Marine Location Near Yakima, WA
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Area Discussion for - Pendleton, OR
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FXUS66 KPDT 230603 AFDPDT

Area Forecast Discussion National Weather Service Pendleton OR 1103 PM PDT Mon Apr 22 2024

UPDATED AVIATION
06Z TAFs...VFR conditions will continue to dominate across all TAF sites through the period. High clouds will move in over the period with CIGs of BKN200. Winds will remain variable and below 6kts. Bennese/90



PREV DISCUSSION... /issued 222 PM PDT Mon Apr 22 2024/

SHORT TERM
Tonight through Wednesday
A transitory upper level ridge will be passing over the region tonight and Tuesday before moving off to the east. This will allow an upper level trough off the Canadian coast to begin moving into Canada Tuesday night and Wednesday. The southern portion of the trough will clip the Pacific Northwest on Wednesday bringing a few showers to the Washington Cascades but also increasing the west to east pressure gradients.
This will lead to some breezy to windy conditions on Wednesday that linger into the overnight hours before decreasing. NBM probabilities are showing 60-90% chance of sustained 20-25 mph winds across the western portion of the Lower Columbia Basin with the 25-30 mph wind probability dropping to less than 30% across most of the Basin. A couple of exceptions will be the Kittitas Valley and eastern Columbia River Gorge where 25-30 mph probabilities remains 60-80%.
Overall this event appears to be less than advisory level at this time but will be monitored for any changes. Temperatures will peak on Tuesday with highs around 70 in the lower elevations and 60s in the mountains then cool slightly on Wednesday. Low temperatures overnight will be slightly moderated by some passing high clouds.
However, can not rule out the possibility of some isolated cold prone areas around the Lower Columbia Basin dropping to or approaching 32 degrees. Advise continued protection of sensitive plants for those living in cold prone areas as temperatures could still flirt with near freezing temperatures overnight.

LONG TERM
Thursday through Monday
Models in fair agreement through the period. However, they do begin to diverge Saturday as an upper level low strengthens over the Aleutians. The ensembles paint an unsettled weather pattern over the Pacific Northwest through much of the period, especially over the mountains. An upper level trough pushes onshore Thursday spreading showers from west to east and continuing into Friday. The deterministic ECMWF shows a shortwave upper level ridge moving through the area Saturday for a brief drying trend, especially over the Columbia Basin. However, the GFS does not show this upper ridge and shows more zonal flow which would indicate a continued threat for showers over the Cascades and Blue mountains. By Sunday, the models begin to diverge even more as their solutions differ on the evolution of the upper low dropping down from the Gulf of Alaska. GFS shows the upper low remaining closed offshore while the ECMWF shows it developing into a open trough off the coast. Either way, the weather will remain unsettled with scattered showers developing over the mountains each afternoon and continuing into the evening hours. At this time, the best chance to see a 0.10 of an inch or more of precipitation will be Friday with the mountains having the best chance (70-85%) while the Columbia Basin the lowest chance (15-30%). In addition, we could see some isolated afternoon/evening thunderstorms over our eastern mountains Friday if the cloud cover isn't too thick. Timing systems will become difficult Sunday and Monday as spaghetti plots show a wide range of possible solutions (uncertainty). Daytime highs will be near normal through the period. Earle/81

PRELIMINARY POINT TEMPS/POPS
PDT 34 68 41 67 / 0 0 0 0 ALW 35 70 45 70 / 0 0 0 0 PSC 38 72 44 74 / 0 0 0 0 YKM 36 70 42 70 / 0 0 0 0 HRI 35 71 43 72 / 0 0 0 0 ELN 34 67 43 64 / 0 0 0 0 RDM 31 68 36 66 / 0 0 0 0 LGD 31 69 42 67 / 0 0 0 0 GCD 33 72 42 69 / 0 0 0 0 DLS 41 73 46 69 / 0 0 0 0

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




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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KYKM YAKIMA AIR TERMINAL/MCALLISTER FIELD,WA 3 sm62 minW 0610 smClear36°F28°F75%30.06
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Wind History from YKM
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Tide / Current for
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Pendleton, OR,



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