National Weather Service United States Department of Commerce

Strong Storm System To Impact The West

A large, strong and moist Pacific storm system will impact a good portion of the West on Friday through the upcoming weekend. Heavy rain, strong winds, heavy mountain snow and rough surf can be expected. The heavy rain may result in some flash flooding on Friday and Saturday across northern portions of California and southwestern Oregon, especially near recent burn scar areas. Read More >

Click a location below for detailed forecast.

Last Map Update: Fri, Dec. 6, 2019 at 6:22:14 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

Low pressure will bring significant rainfall to the area Friday through Sunday morning. Rain amounts will be highest along the SW Oregon coast and especially the Shasta Region, where 2-4 inches of rain will be common. This could cause ponding of water on roadways, especially in areas that had recent heavy snowfall, like around Mount Shasta. These areas could also experience rises on area streams, creeks and rivers, but since waterways are still low, flooding is not expected. Lighter rain is expected elsewhere, mainly due to southerly downslope flow west of the Cascades, but still expect even a little more rainfall east of the Cascades than is typical. Snow levels with this system are fairly high and most of the accumulating snow is expected above 5500 feet. So, most of the snow will be above the highly-traveled roadways, like Interstate 5. However, those planning to go into the mountains or up to Crater Lake late this week or this weekend should prepare for wintry travel.

Be sure to check road conditions before venturing out. You can call 511 for Oregon road conditions and for California road conditions call 800-427-ROAD (7623) or visit their websites listed below.

 

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