Oregon Public Broadcasting

The winter weather roller coaster ride that much of northwest Oregon has been on this week isn’t over yet. 

Tiffani Brown is a meteorologist with the National Weather Service in Portland.  She says a tropical low pressure system is headed into Oregon Saturday, bringing lots of moisture with it. 

That could mean snow in the Portland area starting Saturday afternoon.

Tiffani Brown: “The storm coming in has a little bit of a tropical connection.  It’s also going to be bringing a little bit of upper level warm air with it.  And that’s where you get, we get into the problem of possibly freezing rain or sleet accumulations after the -- as the storm progresses.”

Brown says any freezing rain would likely fall early Sunday morning. 

But she adds that predicting this kind of weather can be a challenge because even just a one or two degree temperature change can mean