Forecasters have said Hurricane Irma, which intensified to a Category 5 storm on Tuesday, is one of the strongest storms ever recorded in the Atlantic.
In fact, the storm has become so strong that it's showing up on earthquake-detecting seismometers, Stephen Hicks, a seismologist at the University of Southampton in the United Kingdom tweeted Tuesday.
"What we’re seeing in the seismogram are low-pitched hums that gradually become stronger as the hurricane gets closer to the seismometer on the island of Guadeloupe," Hicks told USA Today.
In a follow-up tweet he clarified that seismometers were likely picking up background noises, like wind causing trees to move or waves crashing.
The National Hurricane Center warned that Hurricane Irma "will bring life-threatening wind, storm surge and rainfall hazards" to the Caribbean islands in its path. As of Tuesday, the powerful storm had 185 mph winds as it approached the Leeward Islands.
President Donald Trump declared emergencies for Florida, Puerto Rico and the U.S. Virgin Islands ahead of Irma's expected landfall.
The Associated Press contributed to this report.