The Observatory cancelled all Tropical Cyclone Warning signals at 4:20 am on Saturday morning.

It said that at 4 am, Super Typhoon Yagi was centred about 600 kilometres west-southwest of Hong Kong (near 20.3 degrees north 108.8 degrees east) and is forecast to move west-northwest at about 18 kilometres per hour across Beibu Wan and towards the northern part of Vietnam.

Yagi has moved away from Hong Kong. The northeast monsoon is affecting southeastern China.

Locally, winds are still strong offshore and on high ground at first today, occasionally reaching gale force on high ground.

The Observatory has issued the Strong Monsoon Signal.

Locally, there will be showers and a few squally thunderstorms today. Showers will be heavy at times at first. Seas will be rough with swells.

The Observatory said members of the public should stay on the alert.