Tropical Cyclone Horacio became the first Category 5 storm of 2026, with 160 mph winds, in the South Indian Ocean, scientists say climate change is intensifying such storms.

Tropical Cyclone Horacio became the world’s first Category 5 storm of 2026 on February 23, reaching 160 mph winds in the South Indian Ocean, fueled by warm waters and moderate wind shear. It poses no threat to land, remaining far from populated areas, but marks the first Southern Hemisphere Category 5 since April 2025. Scientists link increasing cyclone intensity to climate change, noting a long-term trend of stronger storms.