The Bureau of Meteorology declared the Category 4 storm was Australia’s sixth tropical cyclone of the 2022/23 season as it tracked about 600km off Christmas island.
In an update early today, the bureau said Herman was moving in a south-southeast direction at 15kms/p/h.
The weather system has been gathering force offshore but is expected to lose strength through today.
“It is expected to move southeast today and begin to weaken,” the bureau said.
“During the weekend it is then expected to move towards the west, further away from the Australian coast, and continue to steadily weaken.”
Herman is not expected to impact the Australian mainland or any island territories.
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Australia’s tropical cyclone season runs from November 1 to April 30.
Tropical cyclones are intense low-pressure systems that form over warm ocean waters at low latitudes.
They form when the sea-surface temperature is above 26.5C, drawing their energy from warm tropical waters.
Cyclones produce gales, torrential rain and storm surges of varying intensity, depending on how low the storm’s central pressure becomes.
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