A winter weather advisory is issued by the National Weather Service when a low pressure system results in a mixture of winter weather ‒ such as snow, freezing rain or sleet – that can be hazardous. This combination does not meet the criteria of a warning.

Forecasters are eyeing an active weather patter than will bring a deep freeze and potential for lake effect snow to the region beginning next week.

On Friday at 12:52 p.m. the National Weather Service released a winter storm watch valid from Sunday 7 p.m. until Wednesday 4 p.m. for Oswego, Jefferson and Lewis counties.

The National Weather Service issued a winter storm watch at 2 a.m. on Monday valid from Tuesday 10 a.m. until Thursday 10 a.m. for Siskiyou Mountains and Southern Oregon Cascades.

At 12:22 a.m. on Friday, the NWS Eureka CA issued a winter storm watch valid from Saturday 10 a.m. until Monday 4 p.m. for Northern Trinity.

The watch was in place for Fayette Ridges. "The Winter Storm Watch has been replaced. Please see the latest information from NWS Pittsburgh PA on this developing situation," adds the National Weather Service. The weather service adds, "If you must travel ...

At 12:29 p.m. on Sunday, the National Weather Service released a winter storm watch valid from Tuesday 4 a.m. until Thursday 4 a.m. for North Oregon Cascades, Cascades of Marion and Linn counties and Cascades of Lane County.