Though spring officially arrives on Tuesday, March 19, more than 25 million people in 11 states from Texas to North Carolina have been warned of cold waves and sub-zero temperatures. This comes as nearly 170 million people are already experiencing plummeting temperatures. The affected areas may also experience snow squalls and lake-effect snow, with the situation expected to continue in the coming days. The seasonal snowfall has varied across different cities, with Chicago having the highest percentage. Freeze Watches have also been issued for parts of Louisiana, Alabama, and Georgia.