Hurricane Melissa is now a Category 5 storm, capable of dumping catastrophic rainfall in addition to the powerful winds it's packing. The monster storm has begun to impact Jamaica, Cuba and Haiti, and is expected to cause life-threatening problems for days during its slow crawl through the Caribbean.

Melissa underwent extreme rapid intensification over the weekend and continues to strengthen.

Mandatory evacuation orders have been issued for vulnerable coastal areas of Jamaica ahead of the unprecedented storm’s expected landfall Tuesday morning.