The Perfect Storm was a monster storm that formed when three strong storms came together in the Atlantic Ocean in October 1991. According to retired NOAA meteorologist Bob Case, the set of meteorological circumstances that caused the storm happen only every 50 to 100 years.
The "Halloween Storm" or "Halloween Nor’easter," as it’s often called, occurred when a high-pressure system, a low-pressure system and the remnants of Hurricane Grace collided in a trilogy of terror. Winds were 120 mph, waves were more than 100 feet high, and the Andrea Gail fishing boat sank, killing all six passengers and inspiring the best-selling Sebastian Junger book titled “The Perfect Storm.” Millions of dollars of storm damage occurred as far north as New England and as far south as Puerto Rico.
A hurricane was at the center of The Perfect Storm, but it was never named, which is why the storm is frequently referred to as the "No-Name Storm."