"The New Year will be ringing in with the coldest storm since December 2008. An arctic blast is set to hit the Southwestern United States this next week, bringing snow levels down through 1,500 feet across Southern California, Las Vegas, and Arizona. This storm system has the potential for significant snowfall in Las Vegas.
A storm system dropping out of Canada through Alaska will travel from Washington State to the Southwestern United States in only 24 hours. This means that the air will not have much time to warm as it moves southward and these are the types of storm systems that bring significant snow to the Desert Southwest, including Las Vegas.
Phoenix, you will not see snow with this pattern so the snow wording is not for you. Las Vegas … you will see significant snowfall."
This story focuses mostly on NV (Las Vegas) and AZ. It does not indicate what kind of weather will impact LA, but if that area gets any significant snow it will cease all operations. Having grown up in Southern California, I just cannot imagine the drivers there coping with even the smallest amount of snow.