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The Climate Shift Index: Tropical Cyclones (Tropical Cyclone CSI) applies peer-reviewed science to quantify how climate change affects the strength of tropical cyclones.
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Tropical Cyclones

Explore how climate change has shaped past and present tropical cyclones

Climate Central analyzes real-time data to reveal the climate change story behind every named Atlantic storm. As storms form and strengthen, our data and visuals show how rising ocean temperatures — driven by climate change — fuel tropical cyclones and influence their intensity.

Imelda (2025)

Last updated:10/2/2025, 3:00:00 PM

Peak wind speed:100 mph

Due to climate change:+11 mph

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Humberto (2025)

Last updated:10/1/2025, 3:00:00 PM

Peak wind speed:160 mph

Due to climate change:+10 mph

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Gabrielle (2025)

Last updated:9/26/2025, 3:00:00 PM

Peak wind speed:140 mph

Due to climate change:+14 mph

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Fernand (2025)

Last updated:8/28/2025, 9:00:00 AM

Peak wind speed:60 mph

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Erin (2025)

Last updated:8/22/2025, 9:00:00 PM

Peak wind speed:160 mph

Due to climate change:+9 mph

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Dexter (2025)

Last updated:8/7/2025, 3:00:00 PM

Peak wind speed:50 mph

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Chantal (2025)

Last updated:7/6/2025, 3:00:00 PM

Peak wind speed:60 mph

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Barry (2025)

Last updated:6/30/2025, 9:00:00 AM

Peak wind speed:45 mph

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Andrea (2025)

Last updated:6/25/2025, 3:00:00 AM

Peak wind speed:40 mph

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Helene (2024)

Last updated:9/27/2024, 6:00:00 PM

Peak wind speed:140 mph

Due to climate change:+10 mph

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