Unison (Celine Dion album) was originally released in May 1990.
Siberian Express is a meteorological term in the United States describing the arrival of an extremely cold air mass of Siberian origins .. United States. United States. air mass. air mass. It does specifically refer to an origin in Siberia .. Siberia. Siberia. The term is most commonly employed by the news media when such a frigid air mass moves into areas where it is relatively unusual , such as the Deep South or Eastern Seaboard of the United States .. United States. United States. air mass. air mass. Deep South. Deep South. Eastern Seaboard. East Coast of the United States. Meteorologically , it is typically associated with a phenomenon called the Pacific-North American teleconnection pattern -LRB- PNA -RRB- .. Pacific-North American teleconnection pattern. Pacific-North American teleconnection pattern