The National Weather Service in Portland has issued a wind advisory for the Willamette Valley, the Portland/Vancouver Metro Area, and Clark County Lowlands from noon Monday to 4 AM PST on Tuesday. South winds are expected to range from 15 to 30 mph with gusts up to 45 mph. The NWS advises the public to secure outdoor objects and exercise caution, especially when driving high-profile vehicles, as "Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result," according to the National Weather Service.
A flood watch remains in effect from late Sunday night through late Tuesday night. Excessive rainfall over the region could lead to flooding rivers, creeks, streams, and other low-lying areas. The NWS warns, "Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations, especially for rivers draining the Willapa Hills and Oregon Coast Range." The flood watch, outlined by the National Weather Service, raises concerns about increased landslide risk, particularly in the Cascades, due to heavy rainfall combined with snowmelt above 7,000 feet.
In anticipation of the incoming weather systems, the cumulative rainfall from Saturday through Monday night is projected to reach as high as 3 to 6 inches in coastal and mountainous regions, with local amounts possibly exceeding these estimates. An atmospheric river and a series of frontal systems are responsible for these conditions, which will likely raise snow levels above 7,000 feet on Sunday. Additional concerns include snow melt from the Cascade snowpack, which may exacerbate flooding in Cascade drainages and elevate the risk of landslides.
Residents in affected areas are advised to stay informed and ready to act if flooding develops. The NWS urges the public to monitor forecasts and heed Flood Warnings. For those residing in flood-prone regions, preparation is key. Further details and safety information can be found on their website, with the National Weather Service stressing, "Those living in areas prone to flooding should be prepared to take action should flooding develop."
