The West Coast is preparing for an unprecedented heat wave in March, anticipated to affect millions of individuals. The National Oceanic and Atmospheric Administration (NOAA) projects that approximately 20 to 25 million people will experience moderate heat risk levels as temperatures rise across numerous states. The initial wave of extreme heat is expected to arrive on Thursday, impacting California, Nevada, Arizona, and New Mexico, with temperatures predicted to reach the 80s, 90s, and even the lower 100s. Forecasts indicate that this unusually warm weather will intensify next week, extending its reach to include Utah, Colorado, Wyoming, Idaho, and Oregon.