Two more storm systems are expected to hit the northern United States in succession this week, just as a different bout of severe weather across the Northeast begins to slow down.

The first of these upcoming systems will start from the Plains on Monday, creating snow in the north and heavy rains in the south. The heaviest snowfall is expected to hit Kansas with a potential 2 to 5 inches across the state.

On Tuesday, this storm system is predicted to expand east, infiltrating the Appalachian and mid-Atlantic regions, as well as extending a bit into the Northeast. Virginia, D.C., Maryland and Delaware are likely to see the most severe snow, with 3 to 6 inches expected.

The next storm system will follow soon after on Wednesday, casting another round of widespread rain and snow over the Plains and Midwest before moving into the Northeast Wednesday night and into Thursday.

And throughout the week across the Plains and Rockies, a blast of arctic air may drop temperatures up to 10 to 40 degrees below average.

Montana and the Dakotas are expected to face the worst of these shifts, with temperatures to stay below zero and wind chills to get as frigid as minus 40 degrees. Certain cities, including Seattle; Billings, Montana; and Portland, Oregon, could also experience record lows.

“If you’re hoping for a substantial warmup soon, you’ll be waiting for a bit longer. Arctic air will keep temperatures very cold through this week, and below normal temperatures are favored to continue through the third week of February,” North Dakota’s local NWS Bismarck wrote on X.

These severe storm updates come as the National Weather Service celebrates its 155th birthday Sunday.

Meanwhile in the Northeast, more than 230 flights slated to leave airports throughout the region have been canceled as of Sunday morning.

Still, the snow is starting to taper off as the low pressure system moves off the coast. All winter alerts have been dropped in the Northeast, though residents may see some lingering snow showers throughout Sunday.

Over the next one to two weeks, forecasts from the National Oceanic and Atmospheric Administration predict temperatures will remain colder than usual across the northern United States.