Boulder, Colorado (CNN) -- After more than a day of isolation, help has arrived for flood-besieged Lyons, Colorado.
The Colorado National Guard began evacuating the entire town of about 2,000 at daybreak, Gov. John Hickenlooper said.
The rescue undoubtedly comes as good news for the residents, who have been facing what Fire Chief J.J. Hoffman called a "very large disaster" -- flash flooding from more than half a foot of rain that washed out roads, damaged dams, flooded homes and left the city entirely cut off from the outside.
Not even National Guard helicopters -- grounded by poor weather -- could reach the residents Thursday.