 The 1948 Bermuda hurricane ( Air Weather Service designation : Dog ) was an intense and long @-@ lived Cape Verde @-@ type tropical cyclone that wrought significant damage to Bermuda and areas of Newfoundland in September 1948 . The storm was the eighth named storm and third hurricane of the annual hurricane season . Originating as a tropical wave off the coast of Africa on September 2 , the system rapidly intensified into a hurricane and reached its peak intensity on September 5 with winds of 150 mph . The storm then moved slowly across the Atlantic , and on September 10 reached the Bermuda area . The hurricane then passed