Most of the middle and eastern portions of the United States are bracing for a significant winter storm that could impact 150 million people. While the major winter storm is supposed to hit this weekend,

So far, the National Weather Service has placed Oceana, Muskegon and Ottawa counties under a Winter Storm Warning that goes into effect at midnight tonight and lasts through 10 a.m. Wednesday. Heavy snow is expected. Most areas in that three-county range will see between 3-8 inches of snow. But some areas will see anywhere from 9 to 12 inches.

As a winter storm approaches Upstate South Carolina and other regions, here's what to know about deciphering forecaster terms.

Severe winter storm warnings have been issued for over 24 states, including unusually affected southern regions.

As the winter storm heads toward South Carolina, we want to make sure you know what the terms are that the National Weather Services issues.

People across a large section of the central and eastern United States are facing predictions of heavy snow and ice starting Friday.

Millions across the Northern Plains, Great Lakes, and Upper Midwest were under extreme cold warnings or watches on Wednesday.

The NWS warns of dangerously cold Arctic air bringing sub-zero temperatures to the Northern Plains and beyond. Wind chills may drop to minus 50, with winter storm warnings issued. Significant lake-effect snowfall is expected,

The National Weather Service (NWS) is issuing winter storm warnings and winter weather advisories for much of the U.S., from the Midwest to the Northeastern and further. On Tuesday, Jan. 20, the American Red Cross responded with a warning about the frigid weather and tally of cold-weather safety