Hurricane Dog is believed to have developed from a tropical wave that left the coast of Africa on August 24. Its first observation as a tropical cyclone occurred on August 30, when it was a hurricane; the storm is believed to have begun farther east as a Cape Verde-type hurricane, but was not detectable before August 30. At the time, Dog was located east of the Lesser Antilles, and it quickly attained major hurricane status as it moved to the west-northwest. Dog passed through the Lesser Antilles with winds of . It was considered among the worst hurricanes in the history of Antigua, where thousands were left homeless. Damage was estimated at $1 million (1950 USD, $  USD), and there were two deaths from drowning in the region.