Heavy Rainfall Threat The Across The Eastern U.S.

A strong cold front will gradually push through the Eastern U.S. over the next couple of days and will bring heavy rain and severe weather, primarily damaging winds . Excessive rainfall may result in flash flooding in the central Great Lakes and central Appalachians. Flash flood watches are currently in effect from the coastal Carolinas to the Great Lakes.
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Last Update: 305 PM PDT Tue Sep 21 2021

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Portland, OR Local Forecast Office

9NM SW Newport OR

Marine Zone Forecast

Synopsis: Benign conditions continue tonight and Wednesday. A weak frontal passage Wednesday will result in onshore flow in the afternoon. Winds increase Thursday as a thermally induced low extends north along the coast and an offshore high pressure builds and pushes closer to the coast. This scenario has the chance to manifest gusts up to 25 knots Thursday, for the outer waters.

Tonight

SE wind to 5 kt. Wind waves S 1 ft at 4 seconds. W swell 6 ft at 11 seconds. Patchy fog.

Wed

S wind to 5 kt, veering to NW in the afternoon. Wind waves S 1 ft at 4 seconds, shifting to the NW at 4 seconds in the afternoon. W swell 7 ft at 14 seconds.

Wed Night

N wind 10 to 15 kt with gusts to 20 kt, rising to 15 to 20 kt with gusts to 25 kt after midnight. Wind waves N 3 ft at 5 seconds. NW swell 7 ft at 12 seconds.

Thu

N wind 15 to 20 kt with gusts to 25 kt. Wind waves N 4 ft at 6 seconds. NW swell 7 ft at 12 seconds.

Thu Night

N wind 10 to 15 kt. Gusts to 20 kt in the evening. Wind waves N 3 ft at 5 seconds. NW swell 7 ft at 11 seconds.

Fri

N wind 5 to 10 kt with gusts to 15 kt. Wind waves 2 ft. NW swell 6 ft.

Fri Night

N wind 5 to 10 kt with gusts to 15 kt. Wind waves 3 ft. NW swell 5 ft.

Sat

W wind to 5 kt. Wind waves 1 ft. NW swell 6 ft.

Sun

S wind 5 to 10 kt. Wind waves 1 ft. W swell 6 ft.