June 4, 2024 — Thermal maps of Kīlauea Southwest Rift Zone eruption

These two thermal maps were constructed from images captured during USGS Hawaiian Volcano Observatory helicopter overflights on June 3, 2024, at 6:00 a.m. HST (left) and June 4, 2024, at 12:00 p.m. HST (right). Covering the same extent and using the same thermal color scale, you may notice slight expansion of lava flows to the south following the first overflight. However, by the time of the second overflight, eruptive activity had paused and the flows had begun to cool.