Complex sentence: A few hours later, Chataan became an extratropical cyclone in the Sea of Okhotsk, where the remnants stalled before dissipating on July 13 near Sakhalin.
Split into simpler sentences: A few hours later, Chataan became an extratropical cyclone in the Sea of Okhotsk. The remnants stalled over the body of water before dissipating on July 13 near Sakhalin.