Storms

In Maui, so-called kona storms are affecting the areas where wildfires have grown more frequent and intense, creating a feedback loop of environmental consequences.

As heat blasts the Southwest, a polar vortex is forecast for the Midwest and East. Snow is expected in the Great Lakes, and an atmospheric river is on tap for Hawaii.

Widespread showers and thunderstorms will continue, with millions under alerts from the Ohio Valley to the Mid-Atlantic and as far south as the Gulf Coast.

Overall, 62 million people remain at risk for severe weather in areas that stretch from east Texas to southern New Jersey.

Strong winds, floods and tornadoes are possible following devastating tornadoes in Michigan and Oklahoma last week.

The storms hit a broad section of the nation's midsection, spurring tornado warnings and watches from Iowa to Texas.

The bad weather was set to continue into the weekend and has already downed power lines and trees.

The blizzard has canceled and delayed flights nationwide.

About 41 million people are under blizzard warnings as forecasters predict up to 2 feet of snow for some areas, 70 mph wind gusts and dangerous whiteout conditions overnight.

Forecasters predict up to 2 feet of snow for some areas, 70 mph wind gusts and dangerous whiteout conditions overnight.