UPDATE: Freezing rain advisory in Tri-Cities

Roads could be slippery in the Tri-Cities and outlying areas by late afternoon and evening.

A freezing rain advisory has been issued by the National Weather Service for the Tri-Cities and much of the Mid-Columbia starting at 4 p.m. Tuesday. It is set to expire at 4 a.m. Wednesday.

A 60 percent chance of a wintery mix of rain, snow and freezing rain was forecast for overnight.

Workers at the Hanford vitrification plant were sent home early at 3:30 p.m. Tuesday and night shift workers were told not to report until 7 p.m.

Any accumulation of ice should be less than 0.1 inch in the Tri-Cities, according to the weather service.

The Tri-Cities also remains under an air stagnation advisory.

The air quality in the Tri-Cities was ranked as “moderate” Tuesday morning by the Benton Clean Air Agency. People with long-term illnesses such as asthma or diabetes or who have had a stroke are advised to limit outdoor activities or do less strenuous activities.

This story was originally published January 5, 2016 at 8:47 AM with the headline "UPDATE: Freezing rain advisory in Tri-Cities."