The phrase "monster hurricane" refers to an extremely powerful and dangerous storm with very strong winds and heavy rainfall. It describes a hurricane that is much larger and more destructive than usual. Full definition
AUSTIN — A trio of monster hurricanes and a ferocious wildfire season led to the costliest year for natural disasters on record in the U.S. in 2017, with nearly a third of a trillion dollars in damage,... (usatoday.com)
However, while some islands (like Puerto Rico, Barbuda, St. Maarten and St. Thomas) will take time to recover, others have emerged largely unscathed from this year's monster hurricane season. (tripsavvy.com)