A Flood Watch has been issued by the National Weather Service for portions of Northwest Oregon, including the following areas… Central Coast Range of Western Oregon, Central Oregon Coast, Central Willamette Valley, Coast Range of Northwest Oregon, greater Portland Metro area, Lower Columbia, North Oregon Coast and South Willamette Valley. The watch is in effect from 7:00pm this evening through Tuesday afternoon. Rain, heavy at times, will move across the region this evening through Tuesday afternoon. Two to three inches of rain is expected in the Coast Range. One to two inches is expected in the Willamette Valley and Lower Columbia region.
The heavy rain combined with snowmelt runoff will result in sharp rises on rivers, streams and creeks. Localized urban flooding is also possible, especially late this evening when the heaviest rain is expected. Rivers of most concern at this time are rivers draining the east and west slopes of the Coast Range and Johnson Creek in the Portland Metro area. Landslides and debris flows are possible during this flood event. People, structures and roads located below steep slopes, in canyons and near the mouths of canyons may be at serious risk from rapidly moving landslides.
A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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