The Hong Kong Observatory on Monday afternoon raised Typhoon Signal No 3 as Severe Tropical Storm Nalgae edged closer to the city.
In a weather bulletin, the HKO said the Strong Wind Signal, No 3 will remain in force at least until noon Tuesday as Nalgae moved steadily closer to the northern part of the South China Sea.
"Under the combined effect of Nalgae and the northeast monsoon, strong winds are expected to prevail generally over the territory tonight and tomorrow morning, with occasional gales on high ground," the HKO said.
"The Observatory will closely monitor (Nalgae's) movement and development, and assess the need of issuing a higher signal," it added.
As of 4 pm, Nalgae was estimated to be about 630 kilometers south-southeast of Hong Kong was forecast to move north-northwest at about 10 kilometers per hour towards the northern part of the South China Sea.
Comment