Tropical Cyclones of the North Atlantic Ocean

A tropical cyclone with closed isobars and highest sustained wind speeds of 34 to 63 kt. (39-73 m.p.h.) inclusive (1891-1963). A tropical cyclone with highest sustained wind speeds 64 kt. (74 m.p.h.) or higher (1899-1963). Tropical cyclone modified by interaction with non-tropical air mass, and extratropical weather systems. ................
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