police protection, it is ok now to buy n95 tonight, the states of emergency already. we re tracking a major winter storm moving in across several states tonight. more than 30 states under winter alerts from missouri to georgia, up and down the east coast. heavy snow, ice, and freezing rain. philadelphia, new york, and boston, all getting hit this weekend. wind chills plummeting over night, dropping as low as 40 degrees below zero in some areas. rob marciano standing by to time this out. also developing late today, news on masks tonight. the cdc now issuing new mask guidance for millions of americans. we ll tell you what they re saying now. news tonight on free at-home test kits and in new york, what the governor is now say about the numbers they re seeing here.