As of 11 a.m. Thursday, Isaac was 820 miles east-northeast of Bermuda with maximum sustained winds of 50 mph, moving east at 12 mph. Tropical-storm-force winds extend up to 70 miles from the storm ...

Tropical Storm Isaac has suddenly developed over the ocean, becoming the ninth named storm of the hurricane season. Isaac is expected to become a hurricane in the coming days, traveling eastwards ...

This is a view of the ocean below Tropical Storm Isaac taken during a research flight. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!