Marine Weather and Tide Forecast for Seneca, OR
 | Sunrise 6:17 AM Sunset 9:09 PM Moonrise 12:33 AM Moonset 9:01 AM |
7 Day Forecast for Marine Location Near Seneca, OR
NEW! Add second zone forecast
FXUS66 KPDT 172352 AFDPDT
Area Forecast Discussion National Weather Service Pendleton OR 452 PM PDT Sat May 17 2025
UPDATED AVIATION
00Z TAFs...Radar shows a busy overall set-up with widespread showers (mostly confined to the central and eastern portions of the CWA) with pockets of isolated thunderstorms popping through the region with ample lightning associated in the heavier storms. An Airport Weather Warning was issued for PSC for nearby lightning. YKM/DLS/RDM/BDN are clear for storms for the rest of the period, but PDT/ALW/PSC show chances for some showers and possibly some heavier rain as we go through the first few hours of the period. Most of the heavy rain will move out as we get into the early evening hours as the daytime heating cools down, our only primary threat will be winds through tomorrow.
All sites except for YKM will experience some form of gusty winds up to 35 knots as we head into the next 24 hours. Winds look to decrease a bit in the overnight hours, but pickup and peak at around 15Z for most sites. VIS and CIGs will remain in VFR as the stronger winds keep them from dipping into the MVFR and below range.
PREV DISCUSSION
/issued 221 PM PDT Sat May 17 2025/
SHORT TERM...
Tonight through Monday night...An upper trough will move eastward across the region through Sunday. As it does, an upper low ill drop down from Canada on Sunday and into the Great Basin Sunday night. Upper level ridging will move over the area early Monday.
Zonal flow will allow for a weak system to bring precipitation, on Monday into Monday night.
Any showers thunderstorms should move eastward overnight and mainly just impact the eastern mountains, and some of the Cascades on Sunday. Also, as the trough moves and low drops down, snow levels will decrease to as low as 3500 feet in some areas. There could be a couple of inches of snow along the crest of the Blue Mountains, but due to warm antecedent conditions significant accumulations at pass level is not anticipated.
Winds will be gusty on Sunday. A wind advisory has already been issued for the Kittitas Valley with wind gusts expected in the 50 to 55 mph range, while many other areas, as the Simcoe Highlands, Foothills of the Blue Mountains and portions of the Columbia Basin will gust 25 to 35 mph and most areas will gust to at least 25 mph.
NBM wind gust probabilities to 39 mph on Sunday are >90 percent across the areas mentioned above. However, wind gusts >=47 mph are generally 30 to 50% over these areas except for the Kittitas Valley, where it is 90%.
Low temperatures Monday morning will be on average around 5 degrees, and in some areas closer to 10 degrees below normal, especially if the sky clears out and the winds drop off. Locations in the Grand Ronde Valley could be close to freezing, and this will have to be monitored. But if clouds remain longer or winds stay elevated, then temperatures won't be a cool as forecast.
LONG TERM...
Tuesday through Saturday...A general westerly flow will remain over the area through the week. Another weak system will bring rain, mainly to the mountains Tuesday afternoon. Ridging then builds in for Tuesday night into Wednesday before another system brings another shot of precipitation, mainly for the mountains late Wednesday into early Thursday. Dry southwesterly flow is expected for Friday, before another system approaches for Saturday. Overall model guidance is in good agreement through the period, though there are some minor timing differences with respect to the individual features.
PRELIMINARY POINT TEMPS/POPS
PDT 44 61 39 66 / 50 20 0 50 ALW 44 60 42 64 / 90 30 10 50 PSC 45 67 40 70 / 70 10 0 30 YKM 41 65 38 69 / 10 0 0 30 HRI 44 66 41 70 / 40 10 0 40 ELN 41 59 38 65 / 10 0 0 40 RDM 34 57 33 67 / 10 0 0 10 LGD 39 53 33 64 / 70 30 10 40 GCD 37 53 32 65 / 70 20 10 30 DLS 46 63 43 66 / 10 0 0 40
PDT WATCHES/WARNINGS/ADVISORIES
OR...None.
WA...Wind Advisory from 8 AM to 8 PM PDT Sunday for WAZ026.
Area Forecast Discussion National Weather Service Pendleton OR 452 PM PDT Sat May 17 2025
UPDATED AVIATION
00Z TAFs...Radar shows a busy overall set-up with widespread showers (mostly confined to the central and eastern portions of the CWA) with pockets of isolated thunderstorms popping through the region with ample lightning associated in the heavier storms. An Airport Weather Warning was issued for PSC for nearby lightning. YKM/DLS/RDM/BDN are clear for storms for the rest of the period, but PDT/ALW/PSC show chances for some showers and possibly some heavier rain as we go through the first few hours of the period. Most of the heavy rain will move out as we get into the early evening hours as the daytime heating cools down, our only primary threat will be winds through tomorrow.
All sites except for YKM will experience some form of gusty winds up to 35 knots as we head into the next 24 hours. Winds look to decrease a bit in the overnight hours, but pickup and peak at around 15Z for most sites. VIS and CIGs will remain in VFR as the stronger winds keep them from dipping into the MVFR and below range.
PREV DISCUSSION
/issued 221 PM PDT Sat May 17 2025/
SHORT TERM...
Tonight through Monday night...An upper trough will move eastward across the region through Sunday. As it does, an upper low ill drop down from Canada on Sunday and into the Great Basin Sunday night. Upper level ridging will move over the area early Monday.
Zonal flow will allow for a weak system to bring precipitation, on Monday into Monday night.
Any showers thunderstorms should move eastward overnight and mainly just impact the eastern mountains, and some of the Cascades on Sunday. Also, as the trough moves and low drops down, snow levels will decrease to as low as 3500 feet in some areas. There could be a couple of inches of snow along the crest of the Blue Mountains, but due to warm antecedent conditions significant accumulations at pass level is not anticipated.
Winds will be gusty on Sunday. A wind advisory has already been issued for the Kittitas Valley with wind gusts expected in the 50 to 55 mph range, while many other areas, as the Simcoe Highlands, Foothills of the Blue Mountains and portions of the Columbia Basin will gust 25 to 35 mph and most areas will gust to at least 25 mph.
NBM wind gust probabilities to 39 mph on Sunday are >90 percent across the areas mentioned above. However, wind gusts >=47 mph are generally 30 to 50% over these areas except for the Kittitas Valley, where it is 90%.
Low temperatures Monday morning will be on average around 5 degrees, and in some areas closer to 10 degrees below normal, especially if the sky clears out and the winds drop off. Locations in the Grand Ronde Valley could be close to freezing, and this will have to be monitored. But if clouds remain longer or winds stay elevated, then temperatures won't be a cool as forecast.
LONG TERM...
Tuesday through Saturday...A general westerly flow will remain over the area through the week. Another weak system will bring rain, mainly to the mountains Tuesday afternoon. Ridging then builds in for Tuesday night into Wednesday before another system brings another shot of precipitation, mainly for the mountains late Wednesday into early Thursday. Dry southwesterly flow is expected for Friday, before another system approaches for Saturday. Overall model guidance is in good agreement through the period, though there are some minor timing differences with respect to the individual features.
PRELIMINARY POINT TEMPS/POPS
PDT 44 61 39 66 / 50 20 0 50 ALW 44 60 42 64 / 90 30 10 50 PSC 45 67 40 70 / 70 10 0 30 YKM 41 65 38 69 / 10 0 0 30 HRI 44 66 41 70 / 40 10 0 40 ELN 41 59 38 65 / 10 0 0 40 RDM 34 57 33 67 / 10 0 0 10 LGD 39 53 33 64 / 70 30 10 40 GCD 37 53 32 65 / 70 20 10 30 DLS 46 63 43 66 / 10 0 0 40
PDT WATCHES/WARNINGS/ADVISORIES
OR...None.
WA...Wind Advisory from 8 AM to 8 PM PDT Sunday for WAZ026.
Link to 1 hour of 5 minute data for KBNO
Terminal Aerodrome Forecast (TAF) for KBNO
Wind History Graph: BNO
(wind in knots)
GEOS Local Image of Pacific Northwest
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