Snow, rain and eventually sleet or freezing rain are possible around the Mid-Columbia region beginning today.
The National Weather Service predicts a 30 percent chance of precipitation starting about 4 p.m. when a Pacific winter storm moves into the region.
Four to 6 inches of snow may fall in the Blue Mountains and the eastern slopes of the Cascades. However, temperatures will be just around the freezing point at lower elevations, leading to a mix of rain, freezing rain, sleet or snow, said forecasters.
Areas immediately around the Columbia River and in the Columbia Gorge are particularly likely to have the winter mix.
"Precipitation amounts are expected to be fairly light but it does not take much ice to create hazardous conditions," said the weather service. Anyone traveling or spending time outside today and Friday should closely monitor the weather, forecasters added.
There's also a possibility of flooding in Benton County until this afternoon because of an ice jam on the Yakima River. Areas around West Richland have already reported some minor flooding and people living around the river should be cautious.
No precipitation is expected on Friday though it is expected to be mostly cloudy with temperatures in the high 30s.