Melissa, a strong Category 5 hurricane, neared landfall on the Caribbean island nation of Jamaica early Tuesday, raising fears of a humanitarian crisis.

It also marks the first time in 20 years that three or more Category 5 hurricanes have developed over the Atlantic Basin in one season. The last time was in 2005, when Hurricanes Emily, Katrina, Rita, and Wilma all reached Category 5—breaking a record.

Evan Thompson with the Meteorological Service of Jamaica warned that the impending landfall of Category 5 Hurricane Melissa would cause catastrophic and “life-threatening” damage. Thompson advised seeking shelter in buildings with as many walls as possible to separate them from the outside.

Jamaica is bracing for potentially its strongest storm to ever impact the island, as the slow-moving, major Category 5 hurricane closes in. AccuWeather's Leslie Hudson reports from Lake County, FL, where 16 inches of rain in 6 hours triggered a rare flash flood emergency, washing out roads and flooding homes.

Jamaica's central location in the Caribbean, the island has never recorded a direct landfall from a Category 4 or 5 hurricane, according to records from the National Hurricane Center (NHC) dating back to 1850.