lauren casey of our minneapolis station wcco has more on our frigid weather. >> reporter: here in minneapolis, the highs were 30, high by our standards. temperatures will plummet into the single digits here by lunchtime today, windchills to 40 and possibly 50 below by tonight. tomorrow night lows will be in the single digits in places like new york and philadelphia, highs on wednesday across the northeast will be in the evens and 20s, and only in the 30s as far south as atlanta. is this the return of the polar vortex? well, kind of. the polar vortex is an area of low pressure in the upper atmosphere. it typically hangs out in the arctic regions but not too uncommonly in the wintertime it will dive down into the u.s. dragging frigid air along with it as we experienced earlier this month. in the case this week the polar

we start with lauren casey from wcco. lauren, what is going on here? >> reporter: jeff, here in minneapolis our temperatures are in the upper 30s, balmy by our standards but the bottom falls out tomorrow with another arctic air mass blasting in, highs across the upper midwest by tuesday will be in the single digits and below zero and into midweek this bitter air mass will march eastward. >> glor: we all became uncomfortably familiar with this term polar for text last time. is this a polar vortex? >> in this case it is not that exactly. the polar vortex will send out some pieces of energy to do its bidding for it and have us bundling up. >> glor: lauren casey, thank you very much. meanwhile in california the problem is drought. on friday governor jerry brown declared a statewide emergency to speed up help for local governments. 89% of the state is experiencing severe to extreme drought conditions. lake folsom which provides water to sacramento is only 18% full. residents have been asked to cut water use by 20 to 30%. but it's small towns which rely on w

let's turn to lauren casey of our minneapolis station wcco. lauren, the question everyone wants to know, how much longer is this going to last? >> yeah, jim it's cold and snowy across parts of the northeast today but a second dose of even colder air is set to blast in this week. highs across the lower midwest will drop to the single digits and below zero by tuesday. low temperatures in the 20s will move as far south as northern florida tuesday night. and philadelphia and new york will experience several days this week with highs only in the teens. near minneapolis, we'll contend with the bitter blast with low temperatures of 20 below, and high temperatures of ten below on monday. area schools will likely close due to extreme cold for the fourth time this month. >> axelrod: lauren casey with what is sure to be an unpopular forecast. there is another retail chain alerting customers their credit card information could be compromised. michael's the arts and crafts chain announced today it may have been the latest victim of a data breach. the secret