Now, the new area of low pressure is currently near the northern Philippines, and is expected to move into the northern part of the South China Sea later this week where it is forecast to develop into a tropical cyclone, observatory forecaster Andy Lai Wang-chung said.

“At the moment its path is still uncertain,” Lai said, when asked if it would hit Hong Kong. “Closer to the weekend we will have a better picture.”

The cyclone is expected to bring unsettled weather to the city over the weekend, including some showers and thunderstorms.

Watch: Severe Tropical Storm Pakhar sweeps past Hong Kong

Guangdong Meteorological Observatory is also predicting heavy rain in the region from Saturday due to the tropical system, while mainland forecasting site Weather China is warning there may up to two typhoons in the South China Sea and the Northwest Pacific over the next three weeks.

A graphic at windy.com, a weather forecast app shows a low pressure system will bring strong winds to the coastal area in Guangdong province on Saturday.

Clarence Fong Chi-kong, director of meteorological website Weather Underground said a storm may form over South China Sea in the next few days, but it was too early to say the impact on Hong Kong at this stage due to limited information.

When asked whether the brewing storm could be as big as Typhoon Hato, Lai said the environment would determine whether it intensified into a tropical cyclone or not.

He said the observatory would monitor the situation closely over the next few days.