At 1 a.m. on July 1, the center of the low-pressure area was located between 14.5 and 15.5 degrees north latitude and 117.5 and 118.5 degrees east longitude.

Over the next 24 hours, the system is forecast to move west-northwest at a speed of around 10-15 kph and may intensify into a tropical depression.

Under its influence, waters from Lam Dong to Vinh Long, the eastern part of the northern and central East Sea, and the southern East Sea (including the Truong Sa special zone) will see winds gradually strengthening to force 6 (39-49 kph), with gusts of force 7-8 (50-74 kph), rough seas and waves of 2-3 metres.

During the day and night of July 1, the Gulf of Tonkin, waters in the southeastern part of the northern East Sea, the central and southern East Sea (including the Truong Sa special zone), waters from Lam Dong to Ca Mau, from Ca Mau to An Giang, and the Gulf of Thailand are forecast to experience scattered showers and thunderstorms.

The meteorological agency warned that thunderstorms could bring whirlwinds, strong gusts of force 7-8 (50-74 kph), and waves of more than 2 metres.

Relevant agencies have advised all vessels operating in these waters to closely monitor developments of the system and take proactive precautions due to the high risk of strong winds, high waves and hazardous weather conditions at sea.

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