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Cyclone Carlos impacted parts of Australia in February. Based on available information, which of the following statements accurately describes its path?

  • A

    Formed near Darwin, then weakened and redeveloped into a cyclone over the Indian Ocean.

  • B

    Caused the most significant rainfall only in Western Australia.

  • C

    Traveled directly southwest throughout its entire lifespan.

  • D

    Started and stayed entirely over land.

Refer to figures.
Tropical Revolving Storms (TRS) are thermal depressions that develop over warm tropical oceans (wind speeds in excess of 33 kts). When they sustain wind speeds greater than 63 kt, they are designated tropical cyclones.

TRS are given different names in different parts of the world:
In Australia, TRS are denominated Cyclones (also referred to as "Willy-Willy"), and are approx. 9 per year.

  • East of Darwin: an average of 9 tropical cyclones per cyclone season.
  • West of Darwin: an average of 5 tropical cyclones per cyclone season.

In this case, cyclone Carlos formed near Darwin in February and initially impacted the Northern Territory, bringing heavy rainfall and flooding. It weakened over land, as tropical cyclones typically do when cut off from warm ocean waters. Later, it moved westward, re-entered warm waters off the northwest coast, and redeveloped into a cyclone over the Indian Ocean, continuing to affect parts of Western Australia.

You can see its path in the attached figures.

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