A storm-sparking pulse of rain and thunderstorm activity that regularly rotates around the planet, called the Madden-Julian Oscillation, is forecast to reach the eastern Pacific next week.

The Eastern Pacific hurricane season officially started ... The status of what is known as the El Niño Southern Oscillation, or ENSO for short, plays a role in the amount of activity.

It is typical for the Eastern Pacific hurricane basin to become active earlier than the Atlantic basin. It's a combination of ...

The 2025 hurricane season is off to a busy start in the Eastern Pacific, with three tropical cyclones already having ...