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Tropical Storm Co-May Batters Shanghai, Prompting Mass Evacuations
30 Jul
Summary
- Over 280,000 people relocated in Shanghai
- Hundreds of flights and ferry services halted
- Tsunami warnings issued after powerful earthquake off Russia

On July 30, 2025, Tropical Storm Co-May struck the Chinese city of Shanghai, prompting authorities to relocate over 280,000 people and halt hundreds of flights and ferry services. The storm, which made landfall in the nearby port city of Zhoushan earlier in the day, also triggered tsunami warnings after a powerful earthquake off Russia's Kamchatka Peninsula.
While the winds from Co-May were not as strong as those generated by typhoons, Shanghai and other cities in the Yangtze River delta took extensive precautions. Airports in the region saw significant flight cancellations and diversions, and train services were temporarily suspended or operated at reduced speeds.
The arrival of Co-May coincided with the tsunami warning, which was later discounted by Shanghai's municipal earthquake agency. However, nearby coastal regions were still expected to see water levels rise by up to 180 cm in the evening, though tidal waves around the city were not expected to exceed warning levels.