Tillamook County Emergency Management Advisory: Flood Watch until 04:00PM Wednesday

* WHAT…Flooding caused by excessive rainfall continues to be possible.

* WHERE…Portions of northwest Oregon, including the following areas, Cascade Foothills in Lane County, 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, Northern Oregon Cascade Foothills and South Willamette Valley and southwest Washington, including the following areas, Greater Vancouver Area, I-5 Corridor in Cowlitz County, South Washington Cascade Foothills, South Washington Coast and Willapa Hills.

* WHEN…Through Wednesday afternoon.

* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS… – A series of atmospheric rivers will bring periods of widespread heavy rain through early next week. Rain will become heavy again Saturday night into Sunday morning. Additional rain amounts expected Saturday afternoon through Sunday night: 0.75 to 2.0 inches along the south Washington and north Oregon coast, 2.0 to 4.5 inches along the central Oregon coast, 1.0 to 2.0 inches over the Willapa Hills, 1.5 to 4.0 inches over the north Oregon Coast Range, 3.5 to 7.0 inches over the central Oregon Coast Range, 1.0 to 2.5 inches across the interior lowlands of southwest Washington and northwest Oregon (highest in the Eugene-Springfield area), 4.0 to 8.0 inches across the Cascades and western Columbia River Gorge, and 1.0 to 2.5 inches over the central Columbia River Gorge and Upper Hood River Valley. More rain is expected Monday through Wednesday with another atmospheric river, but uncertainty is high regarding exacting rain amounts with this system. – http://www.weather.gov/safety/flood https://water.weather.gov/ahps/index.php?wfo=PQR

* AFFECTED AREAS: NORTH OREGON COAST … CENTRAL OREGON COAST … COAST RANGE OF NORTHWEST OREGON … CENTRAL COAST RANGE OF WESTERN OREGON … LOWER COLUMBIA … GREATER PORTLAND METRO AREA … CENTRAL WILLAMETTE VALLEY … SOUTH WILLAMETTE VALLEY … NORTHERN OREGON CASCADE FOOTHILLS … CASCADE FOOTHILLS IN LANE COUNTY … WILLAPA HILLS … SOUTH WASHINGTON COAST … LOWER COLUMBIA AND I – 5 CORRIDOR IN COWLITZ COUNTY … GREATER VANCOUVER AREA … SOUTH WASHINGTON CASCADE FOOTHILLS

Instructions:

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. If you encounter a flooded road while driving, be sure to turn around and avoid driving through the flooded roadway. Motorists should allow extra time for their commute as ponding on roads will increase the risk of hydroplaning and periods of heavy rain will reduce visibilities.