An unprecedented cold front has frozen parts of Niagara Falls, pictured above, drawing tourists to document the rare event.
© AP Photo / Carolyn ThompsonSnow and ice coat coin-operated viewers at Niagara Falls.
Snow and ice coat coin-operated viewers at Niagara Falls.
© AP Photo / Carolyn Thompson
At Letchworth State Park in western New York, the arctic freeze has transformed a pressure-fed fountain in to a five-story-tall “ice volvano.”
— Good Morning America (@GMA) February 18, 2015
In the Midwest, the Great Lakes are now more than 85% iced over, according to the Great Lakes Environmental Research Laboratory, with Lake Erie leading the way at more than 98%.
© AP Photo / U.S. Coast Guard, Lt. Cmdr. John HenryLake Erie from the deck of the Coast Guard Cutter Bristol Bay
Lake Erie from the deck of the Coast Guard Cutter Bristol Bay
© AP Photo / U.S. Coast Guard, Lt. Cmdr. John Henry
© AP Photo / Kiichiro SatoSnow coats Navy Pier surrounded by ice-covered Lake Michigan in Chicago.
Snow coats Navy Pier surrounded by ice-covered Lake Michigan in Chicago.
© AP Photo / Kiichiro Sato
Arctic air and bitterly cold wind is moving across the Northeast, plunging temperatures into record low single digits, accompanied by subzero wind chills.
© AP Photo / John MinchilloIce flows pass through New York Harbor.
Ice flows pass through New York Harbor.
© AP Photo / John Minchillo
© AP Photo / Matt RourkeIce collects on the Delaware River in view of Philadelphia.
Ice collects on the Delaware River in view of Philadelphia.
© AP Photo / Matt Rourke