After a series of strong and devastating tornadoes struck the Midwest and South this week, killing 93 people, a winter storm is threatening parts of the Northeast and more tornadoes may crop up in other parts of the U.S.
MORE: 91 dead across 5 states: The deadly tornado outbreak by the numbers
MORE: Strong storm system sparks rare December tornado in Midwest
As severe storms threaten parts of the South, a winter storm is moving into the Northeast. On Saturday, heavy rain moves east with strong thunderstorms moving across coastal Texas and Southwest Louisiana.
KHOG
Firefighters saved a passenger from their car due to flooding in Fayetteville, Ark., Dec. 17, 2021.
A tornado or two is possible with gusty winds and hail in those coastal areas.
MORE: Workers of candle factory destroyed in tornadoes file class-action lawsuit against company
The same storm system will extend into upstate New York and northern New England with freezing rain and heavy snow. Up to 8 inches of snow is possible through Sunday morning.
In the West, over a foot of snow was reported in Utah where a skier got caught in an avalanche Friday.
On Saturday another surge of moisture will move into the Pacific Northwest.
Four states from Oregon to Montana are under weather alerts.
South, Midwest tornadoes possible
Heavy rain moved across hard-hit area in the mid-South prompting several reports of flash flooding and water rescues. Three to 4 inches of rainfall was reported from Oklahoma to Illinois as of Saturday morning, and a flash flood.
UDOT Cottonwood Canyons
A still taken from UDOT video shows heavy snowfall in the Cottonwood Canyons in Utah, Dec. 17, 2021.
As a low-pressure system moves through the Ohio Valley today, the threat of heavy rain and flash flooding is diminishing across parts of the Mid-Mississippi Valley.
However, this same system will bring the risk of severe storms to 6 million in the South.
MORE: Mitch McConnell surveys tornado damage in home state of Kentucky
A line of strong thunderstorms will sweep across coastal Texas and southwest Louisiana with heavy rain, gusty winds, hail and a tornado or two is possible.
Major cities that may see severe storms include Houston; Beaumont, Texas; and Lake Charles, Louisiana.
ABC News
An ABC News weather map released on Dec. 18, 2021, shows heavy rain moving over the Southern United States.
Over the next several days, rounds of heavy rain will move in the Gulf Coast with 3 to 4 inches of rain possible.
Northeast
The same storm system will move into the Northeast bringing heavy snow, freezing rain and rain showers.
Up to 8 inches of snowfall is possible through Sunday morning.
Cheney Orr/Reuters
An aerial view of debris, including vehicles, which was swept into a forested area behind homes, following a devastating outbreak of tornadoes that ripped through several U.S. states, in Mayfield, Ky., Dec. 17, 2021.
A cooler air mass moves across the Northeast this weekend into next week.
Temperatures are at least 20 to 30 degrees cooler than yesterday.
ABC News
An ABC News weather map released on Dec. 18, 2021, shows a storm system projected to move into the Northeast bringing heavy snow, freezing rain and rain showers.
Temperatures will be near normal through Christmas.
West
Over a foot of snow was reported in Utah.
Ten to 12 inches of snow was reported in Montana, Wyoming and the Dakotas.
ABC News
An ABC News weather map released on Dec. 18, 2021, shows winter weather alerts in 4 Western States.
A new storm moved into the Pacific Northwest with heavy rain, snow and gusty winds. Highest elevations may see up to 2 feet of snow this weekend along the Northern Cascades. High winds may cause whiteout conditions. High wind alerts are in effect through Saturday with gusts up to 60 mph.
Over the next several days, waves of moisture will move into the West bringing heavy mountain snow and rain. One to 3 feet of snow is possible over parts of Washington and California.