in that North Bay is situated on the Canadian Shield. This gives rise to a different and more rugged landscape. North Bay is geographically unique in that it straddles both the Ottawa River watershed to the east and the Great Lakes Basin to the west. The city's urban core is located between Lake Nipissing and the smaller Trout Lake. North Bay, critically situated at the junctions of Highway 11 and Highway 17, remains a major transportation centre for Northern Ontario. It is the southern terminus of the Ontario Northland Railway, and is served by the Jack Garland Airport. The area of North Bay contains a number of ancient volcanic pipes, including the Manitou Islands and Callander Bay and many exposed dykes and five named batholiths (Timber Lake, Mulock, West Arm, Powassan and Bonfield). Climate The climate in North Bay is common to most places in Northern Ontario. North Bay tends to be a less humid climate than that found in Southern Ontario due somewhat to the distance from the Great Lakes and less warm than some other locations in Northern Ontario due to cooling from Lake Nipissing. On May 31, 2002, a tornado caused minor damage near the city. Two more tornadoes touched down on Lake Nipissing on August 20, 2009. This storm was a part of a chain of tornadoes that caused large amounts of damage in other parts of Ontario. The weather box below shows climate normals for the airport, at an elevation of 358 m, but the majority of the city, including the downtown core, sits at an elevation of 201 m. The highest temperature ever recorded in North Bay was on 1 July 1931. The coldest temperature ever recorded was on 26 January 1892. Economy North Bay is more economically diverse than many other Northern Ontario communities, although a large percentage of the city's jobs are public sector in nature with health, education and government dominating the list of the city's top employers. North Bay is the home of Nipissing University, founded in 1992 (previous name North Bay Normal School 1909–1953, North Bay Teachers College 1953–1973, Nipissing University affiliated to Laurentian University 1973–1992, independent public university separated from Laurentian University in 1992), and of Canadore College, founded in 1967. Approximately 10,000 full-time students (and thousands more part-time students) are enrolled at the two post-secondary institutions, which share a campus in the west end of the city.