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At least two people died after Hurricane John slammed into Mexico's southern Pacific coast, but as the now-weakened storm dissipated Tuesday, tropical storm Helene threatened over the Caribbean.

Hurricane John hit the coast as a Category 3 storm overnight with winds of up to 120 miles (193 kilometers) per hour, before being downgraded to a tropical storm and largely dissipating by Tuesday afternoon.

Forecasters nevertheless warned of strong rains and possible flash floods inundating the coast for the next few days.

The passage of John left a woman and a child dead after a landslide hit their home in the mountainous southern town of Tlacoachistlahuaca, Evelyn Salgado, the governor of the Mexican state of Guerrero, told a news conference.

The US-based National Hurricane Center (NHC) said in an afternoon update that the remnants of the storm were about 70 miles from the resort city of Acapulco, with sustained winds of 35 miles per hour.

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