From blizzards to torrential rain, extreme weather dominates across the U.S.

Powerful winter storm systems are wreaking havoc across the U.S. and will continue over the next several days.

Governors in Arkansas, Colorado, New York and Louisiana have already issued state of emergencies in light of the severe weather.

As of Saturday afternoon, some 350,000 customers were without power across several states, according to PowerOutage.us. The biggest share of outages was occurring in Michigan. But large swaths of Wisconsin, Oregon, New York and Vermont were also without electricity.

Meanwhile, more than 1,200 U.S. departing and incoming flights were canceled as of Saturday afternoon, FlightAware.com reported.

A snowstorm in Iowa has also impacted Republican presidential candidates ahead of Monday's caucuses.

Florida Gov. Ron DeSantis postponed four events on Friday after campaigning in-person north of Des Moines earlier that day, according to The Associated Press. Meanwhile, both former South Carolina Gov. Nikki Haley and former President Donald Trump pivoted their Iowa events online on Friday. In a video to Iowa voters, Trump said he will try to make it to the state by late Saturday night.

In New York, the Buffalo Bills also rescheduled their home game against the Pittsburgh Steelers from Sunday to Monday in light of the severe weather.

Dangerous floods threaten New Jersey, Pennsylvania and New York

After an evening of heavy rain across the state, New York remained under threat for coastal flooding on Saturday.

In New Jersey, New York and Connecticut, areas near the waterfront and shoreline could receive up to 2.5 feet of flooding. Roads, parking lots, cars and buildings with basements are at risk of being flooded, the National Weather Service said.

A coastal flood warning has also been issued