The National Weather Service office in Boise reports that the Treasure and Magic valleys are dealing with patchy dense fog again this morning. Other cities—particularly in the Midwest and East Coast—should be so lucky.
More than 2,000 flights had already been canceled before sunrise this morning, as the right-hand corner of the Continental U.S. deals with another winter punch in the face. The blitz comes just a few weeks after a so-called "polar vortex" sent temperatures from Chicago to New York into Arctic-like readings.
Additionally, there have already been nearly 4,000 total delays reported this morning.
Most of this morning's cancellations were "preemptive" and the major airlines have already begun waiving rebooking fees for most travelers flying through airports affected by this week's coming storm. Nearly every major air carrier operates at least one hub at one of the airports that will see significant disruptions from the storm. United operates two of its busiest hubs at Newark Liberty and Washington Dulles. Delta has big bases at both LaGuardia and JFK airports, while both JetBlue and American operate busy hubs at JFK. US Airways counts both Philadelphia and Washington National among its hubs. And BWI is one of the busiest airports in Southwest's networks.
Landings and departures were all on schedule at the Boise Airport this morning, but travelers making connections—particularly those heading East—are cautioned to contact their airline in advance.