Typhoon Dolphin struck the eastern coast of China near Yuhuan in Zhejiang province on August 9, 2026, with sustained winds of 151 km/h—the strongest cyclone to hit the country this year. The storm forced more than a million people from their homes and grounded roughly 1,500 flights in Shanghai.
Forecasters now warn the real risk is the torrential rain expected as the system slows inland. Some areas could receive up to 500 mm of rain in a day, raising the threat of major flooding and landslides over the next 48 hours.
The wind died within hours of landfall. But as Typhoon Dolphin crawled westward on August 10, forecasters said parts of Zhejiang could receive up to 500 mm of rain in a 24-hour period beginning at 14:00 local time on August 9.
The mass evacuations that emptied coastal districts had barely concluded before forecasters cautioned that the worst was only beginning. “A typhoon landfall does not mean its impact is over,” said Wang Haiping, chief forecaster at the center.
That warning sets the terms for the days ahead. The system is slowing, and the rain it carries is falling on ground already saturated from earlier storms. The agency issued a red typhoon alert—its highest—for the region’s persistent heavy rainfall.
The rain that follows the wind
A 24-hour window beginning at 14:00 local time on August 9 could bring as much as half a metre of rain to central and eastern Zhejiang, according to the National Meteorological Center. The volume alone—enough to overwhelm drainage even in major Western cities—explains why Shanghai and Wenzhou moved so aggressively ahead of the storm.
Wang Haiping said the storm’s slowing inland track would extend heavy rain and heighten dangers of flooding and landslides, especially in mountainous areas and along narrower waterways. Emergency planners named the Qiantang, Yong, Jiao, and Shuiyang rivers as facing major flood potential, and parts of Zhejiang remained under a red mountain-torrent warning.
Shanghai suspended about 1,500 flights before landfall. Fujian halted all 55 coastal passenger ferry routes and moved 290 construction vessels to protected anchorages. Shanghai’s Yangshan port removed ships from active berths and sheltered more than 500 small and medium-sized craft.
Chen, a 42-year-old tourist from Guangdong, said the storm felt routine. “To us Guangdong people, this typhoon is as ordinary as having a meal and feeling the wind.” For a region that experiences typhoons annually, the wind is familiar. The rain ahead, prolonged and heavy, is a less familiar threat.
For Western firms that source electronics and industrial components from coastal Zhejiang and depend on Shanghai’s port, the cascade of cancellations immediately disrupted shipping schedules. The concentration of production in this corridor means that repeated extreme weather multiplies the cost of business continuity.
A pattern of more water, not just more wind
Climate scientists attribute the rising frequency and intensity of extreme weather events, including typhoons, to ongoing global warming. Warmer air holds more moisture, and the heaviest downpours are getting heavier. This year’s storm is part of a longer pattern of inland flooding that follows coastal wind events.
The vulnerability is structural. Eastern China’s rapid urbanisation has concentrated people, ports, and production in low-lying coastal zones. Shanghai, a global financial hub, is also a chokepoint for air and sea traffic. When a storm of this scale slows over saturated ground, the secondary risks—river rises, slope failures, and drainage overload—can outlast the initial emergency response.
The question now is whether the inland alert system can respond as decisively as the coastal evacuation did. The river flood warnings and geological-disaster alerts issued on August 10 will be the first real test.
Beyond the headline
The Bigger Picture
What makes this storm more than a coastal weather event is the way China’s emergency system treats inland rainfall as the second disaster. The real risk is not the landfall itself but the long tail of runoff, river rises, and slope failures that can move well after the eye weakens.
The Reach
Shanghai is the transmission point here, not just the scene of disruption. When flights, ferry routes, and port movements stall in that hub, the shock travels through business travel schedules, import timing, and the logistics plans of firms that depend on east China’s coastal networks.
The Timing
This week matters because the storm’s damaging phase is split across two clocks: landfall first, then inland rain and flood risk afterward. That sequencing gives local authorities only a narrow window to clear people and equipment before the hazard shifts from wind to water.
Disruption lingers inland
With heavy rain continuing through August 10 and the storm’s slow pace threatening river floods, disruption in eastern China is not over.
- Western supply chain manager with East China logistics
Check the status of cargo at Shanghai and Yangshan ports; expect delays of several days. Explore alternative routing through Ningbo or southern ports if possible, and update internal stakeholders on revised delivery schedules.
- Western business traveler with flights to Shanghai or Zhejiang
Monitor flight cancellations through August 11; rebook or switch to remote meetings if travel is non-essential. Ground transportation in Zhejiang may also be limited, so confirm hotel and meeting arrangements.
- Investor with exposure to Chinese logistics or manufacturing sectors
Watch for operational updates from logistics and manufacturing firms with exposure to Zhejiang and Shanghai. Short-term earnings may be affected by port closures and supply chain interruptions.
- Climate risk analyst for global corporations
Incorporate this event into scenario models for extreme-weather risks to supply chains. Assess flood exposure for nodes in eastern China and update resilience strategies that account for repeated disruption.
Explainer
- Typhoon Dolphin
- A tropical cyclone that made landfall near Yuhuan, Zhejiang province, on August 9, 2026, with maximum sustained winds of 151 km/h. It was the strongest storm to hit China that year, prompting mass evacuations and transport shutdowns. After landfall, it slowed over land, raising the risk of severe inland flooding.
- Red typhoon alert
- The highest warning level in China’s tropical cyclone warning system, indicating an imminent and severe threat. It was issued for Typhoon Dolphin on August 9 due to intense rainfall, a wide impact zone, and expected prolonged duration. The alert triggers the maximum emergency response and mandatory evacuations in affected areas.
- National Meteorological Center
- China’s chief forecasting agency, part of the China Meteorological Administration, responsible for issuing typhoon and severe weather warnings. Its forecasts, such as the rainfall amounts for Dolphin, guide local government evacuations and emergency measures. The center’s alerts are relayed through state media and official channels.
- Saffir-Simpson scale
- A 1-to-5 rating system that classifies hurricane-strength storms by sustained wind speed. Typhoon Dolphin’s winds at landfall placed it at Category 1 on this scale, the lowest threshold for hurricane-force winds, yet the storm’s primary danger came from water, not wind. The scale does not account for rainfall or flooding potential.
RELATED STORIES
