Hurricane Bud heading north off Mexico's Pacific coast

Newly formed Hurricane Bud swirled off Mexico's southwestern coast heading for a possible brush with the southern end of the Baja California peninsula by Thursday or Friday, while former Hurricane Aletta headed out to sea as a tropical storm.

The U.S. National Hurricane Center said Bud had maximum sustained winds of 80 mph (130 kph) late Sunday. It was centered about 210 miles (340 kilometers) south of Manzanillo, Mexico, and was moving northwest at 10 mph (17 kph).

Forecasters said Bud was expected to strengthen rapidly over the next 24 hours, but then begin to slowly weaken late Monday or early Tuesday.

The Hurricane Center said the storm could generate swells that cause life-threatening surf and rip currents over the coming days along Mexico's southwestern coast. Rainfall of 3 to 6 inches, with isolated patches of 10 inches, was possible into Tuesday afternoon.

Meanwhile, Tropical Storm Aletta's winds were down to 45 mph (75 kph) and it was predicted to dissipate by late Monday or early Tuesday. The storm peaked on Friday as a Category 4 hurricane with winds of 140 mph (220 kph). It was about 585 miles (945 kilometers) southwest of the southern tip of Baja California.