Heavy Rainfall and Flooding Concerns in the Southwest; Coastal Low to Impact the East Coast

Deep tropical moisture will lead to widespread showers and thunderstorms capable of producing flash flooding through early next week over the Southwest and Four Corners. A coastal storm is expected to develop off the southeast U.S. coast tonight and is expected to strengthen and bring flooding, dangerous rip currents, gusty winds and heavy rain up much of the East Coast through early next week. Read More >

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Last Map Update: Fri, Oct 10, 2025 at 12:38:37 pm PDT

Watches, Warnings & Advisories

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Coastal Flood Advisory

Small Craft Advisory

Lake Wind Advisory

Marine Weather Statement

Higher Mountain Snow

Weather Timeline: Oct 10th - 13th

Two upper lows will move into the region Friday through Monday, bringing a cold and moist air mass to the area. Snow levels lower down to 5000-6500 feet by Friday night. Periods of showers will likely bring light snow to the higher mountains above 5500 feet, especially Crater Lake, Diamond Lake and other mountains above 5500 feet from the Cascades west. Confidence in snowfall amounts is low to moderate due to uncertainty in the track of the second low and due to warm ground temperatures which may melt snow quickly.

An approaching system looks to move over the area on Friday, bringing widespread rainfall to northern California and southern Oregon. The highest rainfall amounts look to be east of the Cascades, and especially over terrain in Curry and western Siskiyou counties. Activity decreases on Saturday and Sunday, although isolated shower possibilities remain in the forecast. A second low pressure system move in from the north on Monday. This system may bring colder air with it, possibly bringing snow levels as low as 5000 feet. This would make light snowfall possible over the Cascades and other elevated terrain. With warm road surfaces and lingering moisture or mixed rainfall, significant snow accumulation is not expected. Monday's system could bring gusty winds to the Shasta Valley and east side areas.

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Heavy Rainfall and Flooding Concerns in the Southwest; Coastal Low to Impact the East Coast

NWS Forecast Office Medford, OR