Meteorologists are raising alarms about a potentially historic storm impacting a wide swath of the United States this weekend. A triple threat of severe storms, extreme flooding, and snowfall is on the horizon, particularly affecting the South as tornadoes and flash flooding are expected. Areas such as the Mississippi Valley and Central Appalachians are bracing for soaking rains, while a major storm is set to hit the east, creating all hazards including high winds and possible tornadoes. Numerous regions have been upgraded to a level 3 out of 5 risk for severe weather, prompting the declaration of alert days and first alerts for Saturday night into Sunday morning. Weather forecasts indicate a significant threat as the storm system is anticipated to bring heavy snow, freezing rain, and severe thunderstorms throughout the weekend.