Hurricane Erin could 'at least double or triple in size' next week and the track has shifted south, but remains likely to turn away from the East Coast.

Anyone who rides out a Cat 5 storm in a high-rise should be prepared for an eyes-wide-open nightmare and an apocalyptic aftermath, one expert warns. The higher up you are, the stronger the winds

MIAMI (AP) — Erin became a Category 3 hurricane in the Caribbean early Saturday and is expected to strengthen further during the day, the National Hurricane Center reported. The storm is currently 170 miles (275 kilometers) northeast of Anguilla with maximum sustained winds of 120 mph (195 kph). It is moving west-northwest at 20 mph (31 kph).

Tropical Storm Erin is now expected to become a Category 4 hurricane, with maximum sustained winds of 130-mph.

There is "still a greater than normal uncertainty" about what impact Erin may have on the U.S. East Coast, NHC forecasters say.