Hurricane Beryl is a historic storm. Here's why.

Hurricane Ivan in 2004 was the last strong hurricane to hit the southeastern Caribbean, causing catastrophic damage in Grenada as a Category 3 storm. Hurricane Beryl lashed the southeastern Caribbean as a Category 4 storm — an unprecedented strength this early in the Atlantic season. Beryl amassed its strength from record-warm waters that are hotter now than they would be at the peak of hurricane season in September, he said.