After a wet and wild start to the month, Oregon’s weather has dried out in a big way and that’s expected to stay the case for the foreseeable future.

"Light winds and limited air movement will lead to a period of stagnant air conditions," NWS said, warning of "deteriorating air quality for people with respiratory problems" and "visibility one quarter mile or less in dense fog," which "could make driving conditions hazardous."

A surface inversion is preventing the normal mixing of air, meaning pollutants will remain trapped at lower altitudes.

The National Weather Service (NWS) issued a warning for some beach counties in Oregon about so-called sneaker waves that could kill people. Sneaker waves could be lethal by knocking over unsuspecting people and pulling them into cold waters or carrying heavy driftwood logs that can pin people down.

On Thursday at 7:35 a.m. the National Weather Service issued a dense fog advisory in effect until 1 p.m. for Tualatin Valley, West Hills and Chehalem Mountains, Outer Southeast Portland Metro and Cascade Foothills of Marion and Linn counties.

After months of waiting, La Niña conditions finally emerged in the tropical Pacific last month, according to the National Weather Service Climate Prediction Center.

The National Weather Service canceled the Freezing Fog Advisory that was out for parts of Central Oregon, but patchy freezing fog is possible this morning, especially in Jefferson County. Breezier conditions have helped to scour out some of the fog overnight.

The National Weather Service is warning the public of a moderate risk for sneaker waves in Douglas, Coos and Curry counties.