Passengers wait for a BoltBus to arrive during a light rain, Wednesday, Nov. 27 in New York. A wall of storms packing ice, sleet and rain could upend holiday travel plans as millions of Americans take to the roads, skies and rails for Thanksgiving. Mark Lennihan/AP hide caption

itoggle caption Mark Lennihan/AP

Tuesday's forecast for the eastern half of the U.S. shows big bands of rain, freezing rain and snow. National Weather Service hide caption

itoggle caption National Weather Service

A still image from a NOAA satellite shows the progress of Super Typhoon Haiyan. The powerful storm, which had packed winds stronger than 200 mph while at sea, made landfall early Friday morning in the Philippines. NOAA hide caption

itoggle caption NOAA

As snow fell in Rapid City, S.D., Friday Brenda Nolting took groceries to her car. An early snow storm swept through Wyoming and western South Dakota, dropping more than two fee of snow in some areas. Steve McEnroe/AP hide caption

itoggle caption Steve McEnroe/AP

A man walks across the washed-out Wagonwheel Gap Road in Boulder, Colo., on Monday. Mark Leffingwell /Reuters/Landov hide caption

itoggle caption Mark Leffingwell /Reuters/Landov

John Hoffenberg watches as floodwaters flow down a street in Boulder, Colo., on Sunday. Mark Leffingwell/Reuters/Landov hide caption

itoggle caption Mark Leffingwell/Reuters/Landov

People cool off Wednesday in a pool in Shanghai, where temperatures reached an all-time record: 105.4 degrees. Frank Langfitt/NPR hide caption

itoggle caption Frank Langfitt/NPR

Excessive heat warnings will continue for much of the Desert Southwest through Monday. Here, Maria Wieser of Italy drinks water while sightseeing in Death Valley National Park on Friday. Chris Carlson/AP hide caption

itoggle caption Chris Carlson/AP