The last system in the train of storms that clobbered the Northwest will spread a swath of accumulating snow from the northern Rockies to northwestwen Ontario into Thursday (Thanksgiving) night.
Enough snow will fall to make roads slippery from northern Idaho to northern Minnesota, northern Wisconsin, part of Upper Michigan and neighboring Canada.
Portions of I-29 and I-94 in the United States will be affected, as well as a long stretch of Canada's Highway 1.
Up to half a foot of snow (15 cm) will fall on portions of northwestern Wyoming and from southern Saskatchewan to north of Lake Superior.
The snow precedes a push of colder air that will continue over the region through the long Thanksgiving weekend in the United States.
Temperatures will be slashed by 20 degrees Fahrenheit (10 degrees Celsius) compared to highs earlier this week.
The risk of flooding downpours and gusty thunderstorms will increase across southern Florida as a tropical disturbance shifts northwestward from Cuba this weekend.
Slow-moving and repetitive downpours will raise the risk for flash flooding along the western Gulf Coast into early next week.
Stargazers will want to dig out their binoculars and telescopes this weekend as Venus and Jupiter shine so close that they appear as one large, bright star in the evening sky.
Typhoon Lionrock is poised to make landfall in Japan early in the new week with heavy rainfall, damaging winds and an inundating storm surge.
Hawaii is facing not one, but two tropical threats next week as Madeline and Lester churn westward.
Hot and dry weather will greet fans and competitors at the 2016 U.S. Open Tennis Championships in Flushing, New York, as play begins Monday, Aug. 29.
Cedoux, Saskatchewan (1973)
Largest hailstone ever recorded in Canada. This stone was 4.5 inches in diameter and weighed a pound.
The Bronx, NY (1990)
Strong thunderstorms dumped 4.24 inches of rain.
Nassau, NY (1990)
Thunderstorm winds overturned boat, injuring 12.