The first named storm of the season had maximum sustained winds of 140 mph (220 kph) yesterday night.
The US National Hurricane Center in Miami is forecasting that the storm will slowly weaken over the next 48 hours.Other than strong surf, the storm posed no threats to land.
Andres is centered about 800 miles (1,290 kilometers) southwest of the southern tip of Baja California, Mexico, and is moving west at 6 mph (9 kph).