September 18, 2024 —Kīlauea middle East Rift Zone eruption reference map

This reference map depicts fissures and lava flows from the Kīlauea middle East Rift Zone eruption as of the end of the day on Wednesday, September 18, 2024. Areas in bright red represent new lava flows since the area was last mapped during the morning of September 17, when activity was focused within Nāpau Crater. Today's lava flow expansion also affected areas just west of the crater, where a new, rejuvenated phase of the eruption began in the late afternoon. In total, the fissure system has stretched over 1.8 kilometers (1.1 miles) of the East Rift Zone, with the lava flows now covering 26 hectares (64 acres).