Tropical storms have one-minute maximum sustained winds of at least NUMBER@1 mph -LRB- NUMBER@2 knots , NUMBER@3 m/s , NUMBER@4 km/h -RRB- , while hurricanes have one-minute maximum sustained exceeding NUMBER@5 mph -LRB- NUMBER@6 knots , NUMBER@7 m/s , NUMBER@8 km/h -RRB- .

An LOCATION@1 hurricane refers to a tropical cyclone that forms in the LOCATION@2 usually in the LOCATION@3 during the summer or autumn , with one-minute maximum sustained winds of at least NUMBER@5 mph -LRB- NUMBER@6 knots , NUMBER@7 m/s , NUMBER@8 km/h -RRB- .
