Hong Kong authorities closed schools and offices and cancelled flights, as Typhoon Utor veered closer to the southern coast of China.
The Hong Kong Stock Exchange was also closed early Wednesday, in accordance with the territory's "Number 8" tropical cyclone warning.
Heavy rains and winds up to 122 kilometers per hour were reported in Hong Kong, which is not expected to be hit directly by the storm.
Forecasters expect Utor to make landfall late Wednesday or early Thursday near the western coast of southern China's Guangdong province.
The storm passed over the Philippines earlier this week, causing landslides and flooding that killed at least six people and left 30,000 displaced.