A rainbow appears over the partially frozen American Falls in sub freezing temperatures in Niagara Falls Ontario

A rainbow appears over the partially frozen American Falls in sub freezing temperatures in Niagara Falls Ontario

A rainbow appears over the partially frozen American Falls (R) in sub freezing temperatures in Niagara Falls, Ontario February 17, 2015. Temperature dropped to 6 degrees Fahrenheit (-14 Celsius) on Tuesday. The National Weather Service has issued Wind Chill Warning in Western New York from midnight Wednesday to Friday. REUTERS/Lindsay DeDario (CANADA – Tags: TRAVEL ENVIRONMENT)