BOISE,ID (CBS2) — A strong storm is bringing rain to the valley and heavy snow to the mountains across southwest Idaho and southeast Oregon. Winds increase Wednesday with a Wind Advisory in effect through the evening. Snow levels drop later tonight as colder air moves in. The valley could see a light dusting of snow early Thursday but most of the snow will stay in the mountains. A Freeze Watch is in effect late Thursday night through Friday morning as temperatures plunge into the 20s and near 30, causing a hard freeze…