Powerful Hurricane Erin has undergone astonishingly rapid changes in its intensity — a phenomenon that has become far more common in recent years as the planet warms. It quickly became a rare Category 5 for a time Saturday,

Erin is the first hurricane to develop over the Atlantic this year, and meteorologists are closely tracking its path and forecast.

According to AccuWeather, Hurricane Erin is expected to strengthen rapidly over the weekend, and could intensify into a major Category 4 storm.