A slow-moving cold front dropping southward through Southwest Washington and Northwest Oregon will lead to a very wet Sunday, the National Weather Service said in a special weather statement issued mid-day Saturday.
Rain is expected to begin this evening over Southwest Washington and move slowly southward into Northwest Oregon by sunrise Sunday.
Locations between Southwest Washington and north of a Lincoln City to Mount Hood line can expect several hours of steady moderate to locally heavy rainfall on Sunday. Rain will end from the north Sunday evening and diminish across the entire area by 11 p.m.
Rainfall totals of 1 to 3 inches are expected, with localized amounts peaking as high as 5 inches in the higher terrain of coastal ranges.
This long-duration rainfall event will likely lead to ponding of water in roadways and intersections and some urban and small-stream flooding. This is particularly true in low-lying areas such as underpasses and locations affected by clogged storm drains due to fallen leaves.
The National Weather Service will continue to update the forecast as new data are received. For the latest forecast information, visit www.weather.gov/portland.