Tropical storm Patricia off the Pacific coast of Mexico has been upgraded to a hurricane, US forecasters say.
Patricia is packing maximum sustained winds of 120km/h and is located 365 kilometres southwest of resort town of Acapulco, the US Hurricane Centre in Miami said.
The hurricane is moving west-northwest at a speed of 26km/h.
According to current forecasts, the centre of the storm should approach the coast of southwestern Mexico on Friday (local time).
It is expected to become a major hurricane that day.
Patricia is forecast to produce total rain accumulations of 152 to 304mm, with isolated maximum amounts of 500mm inches, over the states of Jalisco, Colima, Michoacan and Guerrero from Thursday into Saturday.