It formed in the South China Sea before making landfall in Southern Thailand and crossing the Malay Peninsula into the Bay of Bengal.

The system that would become Tropical Storm Harriet formed off the western coast of the Philippines on the morning on the afternoon of October 19.

Winds peaked at 60 mph (95 km/h) for Harriet,[2] which soon made landfall in Nakhon Si Thammarat Province in Thailand on October 25.

[3][4] Harriet caused extensive damage in the area of Laem Talumphuk in Pak Phanang District of Nakhon Si Thammarat Province, where it wiped out entire villages.

[11] Final figures by the Thai Meteorological Department record 935 deaths, making it the deadliest tropical cyclone in the country's history.