PORTLAND Flood warnings and watches were expected to remain in effect through Saturday, with heavy rain falling through all of Western Oregon and Southwest Washington.

The National Weather Service said flooding was possible through Saturday on some of the coastal rivers, tributaries of the Willamette River and the Willamette south of Salem. More:See all weather alerts

A watch remained in effect throughSaturday for the Portland Metro, Oregon Coast and Coast Range.

Crews in Portland were monitoring Johnson Creek, but they did not think it was going to flood, according to Cheryl Kuck with the Portland Bureau of Transportation. She said no other streams or rivers had created any problems. Standing water throughout the city Friday was not causing any significant traffic issues.

Warnings were issued for the Nehalem River inClatsop and Tillamook counties and the Wilson River near Tillamook. Both rivers were at or just over flood stage Thursday evening.

TheSiuslaw River near Mapleton was expected to crest Saturday afternoon about four feet above flood stage.

KGW Meteorologist Nick Allard said to expect heavy rains Friday afternoon through Saturday morning, with gusty, breezy conditions.

The Willamette Valley could get another inch of rain Friday, he said, with much more in the Coast Range.

More: Current conditions | 7 Day | Radars

Avalanche warnings were also issued for the Cascades and for Mt. Hood onFriday.

By Saturday, Portland could see up to seven inches of rain, which would beat last year s totals and beat the fifth wettest March ever, according to forecasters.

On Friday night, another system will move in to bring rain through Saturday, Allard said.

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