A nor'easter is churning up the East Coast, prompting declarations of a state of emergency in New Jersey and parts of New York state.

Hurricane Erin is starting to churn up big waves along the northeast coast after pelting North Carolina’s Outer Banks with strong winds and swells that flooded a few places on the barrier islands.

Weather forecasters are predicting wild temperature swings across the eastern U.S. Wednesday was expected to be another scorcher before temperatures plunge as much as 30 degrees.

Harsh has cold descended on the nation’s midsection as a polar vortex grips the Rockies and northern Plains.

Road conditions are beginning to deteriorate in the central U.S. as a mixture of snow, ice and plunging temperatures arrived.

The National Weather Service says that around 134 million people in the U.S. are under alerts as an extremely dangerous and record-breaking heat wave broils much of the country.

Much of saturated California remains under threat of floods as the latest winter storm blows through, but so far the state has escaped the severity of damage spawned by a recent atmospheric river.

The first of back-to-back atmospheric rivers is drenching California.

A “highly impactful” winter storm began delivering a punch to the country’s midsection with blizzard conditions that could dump as much as a foot or more of snow.

Scorching temperatures meteorologists say were brought on by a heat dome have taxed the Texas power grid and threaten to bring record highs to the state before they are expected to expand to other parts of the U.S. National Weather Service Forecaster Bob Oravec said Monday that the heat dome is expected to reach north to Kansas City and east to the Florida Panhandle and continue at least until the July Fourth holiday.

A deadly storm system is lashing a large swath of the southern U.S. with bands of sleet and snow for a third day.

An arctic blast has brought extreme cold, heavy snow and high winds to much of the U.S. Cold air moving down from Canada has caused temperatures to plunge dramatically.

(AP Photo/Charles Rex Arbogast)The Latest on winter weather across the U.S. (all times local):OKLAHOMA CITY — Oklahoma Gov. Stitt’s disaster declaration request for all 77 Oklahoma counties comes a day after the governor spoke with Biden by phone. ___NEW ORLEANS — Rolling power blackouts necessitated by severe winter weather hit water systems in at least two Louisiana cities. He implored residents to stop running water, noting that temperatures had risen above the freezing mark___RALEIGH, N.C. — North Carolina Gov. — The Louisiana Department of Health on Wednesday confirmed three deaths related to winter weather this week.

Nearly 3.4 million customers around the U.S. were still without electricity, and some also lost water service. More than 100 million people live in areas covered by some type of winter weather warning, watch or advisory, the weather service said. Weather-related outages have been particularly stubborn in Oregon, where some customers have been without power for almost a week. At the peak of the storm, more than 350,000 customers in the Portland area were in the dark. In Oregon, authorities confirmed Tuesday that four people died in the Portland area of carbon monoxide poisoning.

It was the second major snowstorm in less than week to hit the area. (AP Photo/Kathy Willens)NEW YORK – A major snowstorm pushed through the Northeastern United States on Sunday, less than a week after a storm dumped more than 2 feet on parts of the region. The National Weather Service reported 11 inches had fallen in Walpole, Massachusetts. Weather service forecaster Bob Oravec said a mix of snow and rain would move northward up the East Coast. New York City Mayor Bill de Blasio said Sunday's snowfall, which started at around 9 a.m. in the city, would not close COVID-19 vaccination sites.