 NGC 5548 is a well-studied Cefert galaxy with a bright active nucleus. This activity is caused by matter flowing into the 65 million solar mass supermassive black hole at the core. The disk is heated so much that it emits X-rays near to the black hole, and less energetic ultraviolet radiation further out. Ultraviolet radiation can create persistent winds strong enough to blow gas away from the black hole. NGC 5548's persistent wind, which has been known about for two decades, reaches velocities exceeding 3.5 million kilometers per hour. That's 2.1 million miles per hour. But a new wind has arisen, which is much stronger and faster than the persistent wind. The new wind reaches speeds of up to 18 million kilometers per hour. That's 11 million miles per hour. But it's much closer to the nucleus. This activity could provide insights into how supermassive black holes interact with their host galaxies.