Still, March systems are "quite rare," according to Phil Klotzbach, a hurricane researcher at Colorado State University. Klotzbach said the only tropical cyclone ever recorded over the Atlantic in March was a Category 2 hurricane that hit the Leeward Islands and Caribbean in 1908.

While Area of Disturbance Reveals Swirling Motion, There is a Minimal Chance Storm Will Develop Into a Tropical Storm or Hurricane

FOX Weather Hurricane Specialist Bryan Norcross said that, based on satellite imagery, the system's appearance might have been the reason the National Hurricane Center issued the advisory.