Where have avalanche warnings been issued across the United States?

Avalanche warnings have been issued for numerous areas of the Rocky Mountains, with danger rated high in portions of Colorado, Utah, Idaho, and Wyoming. Additionally, the Mount Washington Avalanche Center has issued a specific avalanche warning for areas of the White Mountains in New Hampshire. These warnings come amid extreme weather conditions across the US, including record cold temperatures resulting from a polar vortex. These hazardous conditions pose significant risks to outdoor enthusiasts and residents in these mountainous regions.