August 22, 2025 — Episode 31 lava flows in Halema‘uma‘u crater at the summit of Kīlauea

Unlike many recent Kīlauea summit eruption episodes, number 31 on August 22 has had a primary lava channel exclusively fed by molten spatter, rather than lava upwelling from the north vent. Other more solid tephra has fallen in a broad plain around the vent. At the top of this frame, the last rays of late afternoon sunlight illuminate the lava fountain above the shadow from Halemaʻumaʻu's crater rim. USGS photo by M. Zoeller.