Satellites observed striking upper-atmosphere phenomena generated by an intensifying tropical cyclone.

One of the most powerful typhoons ever recorded this early in the Pacific season did more than unleash flooding and extreme winds—it sent enormous ripples all the way into the…

Satellites observed striking upper-atmosphere phenomena generated by an intensifying tropical cyclone.

Katelynn Delos Reyes thought she knew what to expect when Typhoon Sinlaku slammed into Saipan in April. As a lifelong resident of the island, Delos Reyes had survived frequent…