It seems like "through" would be preferred, but either one should be fine.
Australia is a SINGLE country. The subdivisions are called States or Territories. Hurricane Tracy passed over the north eastern part of Australia (Queensland) and the City of Darwin.
Cyclone Tracy moved in late on Christmas Eve, 24 December 1974. The eye passed directly over Darwin just after midnight, and the cyclone had passed by around 7:00am the next morning.
Cyclone Tracy moved in late on Christmas Eve, 24 December 1974. The eye passed directly over Darwin just after midnight on December 25, and the cyclone had passed completely by around 7:00am the next morning.
On Christmas Day, 25 December 1974, Cyclone Tracy hit Darwin, capital city of the Northern territory in Australia. The cyclone passed directly over Darwin just after midnight, with its 'eye' centred on the airport and northern suburbs, and had passed by 7am on Christmas morning.
Cyclone Tracy's eye was about 35 minutes in duration. The eye passed over Darwin airport between 3:50am and 4:25am on Christmas morning, 1974.
No country really calls a cyclone a tornado. Some parts of the U.S. a tornado a cyclone, though a tornado and a cyclone are two different things. In the U.S. however a strong tropical cyclone is called a hurricane.
A cyclone occurs over water. A hurricane occurs over land.
---- A transmit is something that can be sent over, passed on, passed along, and/or let through. ----
As a cyclone moves over land, it loses its main energy source of warm ocean water, causing it to weaken. The friction from the land also disrupts the structure of the cyclone, causing it to break apart and dissipate more quickly than if it were over water.
A tropical disturbance can become a tropical depression, which can then lead to a tropical storm and on to a tropical cyclone, or hurricane. (The differentiation between a cyclone and hurricane depends on the strength and location -- it becomes a hurricane when it hits land and exceeds wind speeds of over 74 miles per hour)
In the US, a cyclone can only start over land - over the water it is referred to as a water spout.
Hurricane Wilma was a devastating cyclone in 2005 which caused over 60 fatalities. It occurred in the Caribbean and affected the country of Haiti the most.