Heavy rain from an atmospheric river event brings 12 to 18 inches of rain to far northern California and southwest Oregon. Meanwhile, a storm system in the northern Plains will bring blizzard conditions to North Dakota and northwestern Minnesota. Heavy snow is expected to spread across parts of the central Appalachians starting Thursday, with another round of snowfall possible in Pennsylvania and nearby areas into Friday. Wind with heavy precipitation to hit British Columbia, snowfall for Alberta, Saskatchewan and Manitoba, wind in Quebec, and rain for parts of the Maritimes. Those are the biggest impact areas in this week’s weather briefing, but here are some other notables.