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Tropical Cyclone Freddy has become

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the longest-lived named

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tropical cyclone ever,

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beating out Hurricane--and

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then Typhoon--John back in the 1990s.

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Freddy formed between

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Indonesia and Australia,

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and then headed nearly straight west.

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Its intensity fluctuated,

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but at one point

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became the first Category

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5 tropical cyclone in 2023.

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Freddy was so long-lived

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because the ocean during its entire

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track was very warm

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and because the steering currents

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over the vast

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expanses of the Indian Ocean

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took it pretty much straight

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east to west.

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After crossing the Indian Ocean,

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Freddy crashed into Madagascar,

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causing a lot of damage,

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and then continued

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and made landfall in Mozambique,

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where it caused

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additional damage due

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to flooding and landslides.

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By the time it got to Mozambique,

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the steering currents in the atmosphere

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had decreased.

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So Freddy sort of wandered around back

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over the Mozambique Channel,

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almost back to Madagascar.

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Then it restrengthened

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and made another landfall in Mozambique

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where it caused

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additional damage and fatalities.

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The IMERG precipitation dataset

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lets us monitor the rainfall that Freddy

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and other systems produce,

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no matter where it happens

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over land or over ocean.