National Weather Service United States Department of Commerce
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Last Map Update: Sun, Feb. 25, 2018 at 1:53:13 am PST

National Weather Service Portland, ORNational Weather Service Pendleton, OR
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National Weather Service Boise, ID
National Weather Service Eureka, CANational Weather Service Sacramento, CANational Weather Service Reno, NV

The active winter pattern is set to continue again Sunday morning through Sunday night as the next system approaches the Pacific Northwest. This system will have more available moisture than the one early this morning. This means heavy snow with significant accumulations are likely over the Cascades, especially from around highway 140 north. Moderate to heavy snow is also expected over the Siskiyous, including Siskiyou Summit and highway 97 north of Chiloquin, but storm totals will be less than in the Cascades. Snow is expected to be heaviest from late Sunday morning through Sunday evening, then gradually tapering off Sunday night. Snow in the lower elevations is possible west of the Cascades Sunday evening into Monday morning. It’s becoming more likely snow will accumulate over the higher passes between Grants Pass and Canyonville Sunday evening. Snow could accumulate down to the valley floors late Sunday night into Monday morning as colder air moves in, but amounts should be less than an inch below 2,000 foot elevations because most of the moisture will have moved out of the area by then. Gusty winds are also likely along and east of the Cascades, therefore expect reduced visibility with brief whiteout conditions possible Sunday afternoon. Snow levels Sunday morning will start out between 1000 and 1500 feet, increasing to around 2500 to 3500 feet Sunday afternoon, lowering between 1500-2000 Sunday evening, then down near the valley floor late Sunday night. Be prepared for periods of reduced visibility and slippery and snow covered roads. Be prepared for wintry travel conditions and be sure to check road conditions before venturing out.

You can call 511 for Oregon or California road conditions (while you’re in either state), or visit their websites listed below. Monitor the forecast closely for updates. Also, it is a good idea to have alternate travel plans to avoid driving in wintry conditions.

 

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