Weather security

Hundreds of flights canceled as 'blockbuster' winter storms sweep across the US affecting up to 100 million as Midwest and Northeast brace for a 'flash freeze' which could send temperatures into the teens

More than 800 flights have been canceled as the first of two winter storms takes hold in a 'blockbuster' blizzard.

Travel has already been affected with the number of flights axed increasing throughout Friday, as shown on flight-tracking site FlightAware.com. 

Flight delays into or out of the United States stood at more 2,600 Friday afternoon and the one-two punch of storms has the potential to severely snarl travel over the long weekend for Martin Luther King Jr Day. 

To date, 100 million people are under some form of a winter storm watch, warning or advisory across the United States.