March 4 overflight of Kīlauea summit and East Rift Zone

An aerial view of Pu‘u Pua‘i, Kīlauea Iki, and Kīlauea caldera. Though the eruption within Halema‘uma‘u isn't visible from this vantage point, the bluish-tinged plume of volcanic gasses is visible near the center of the photo. The most recent gas measurements, made on March 3, indicate that Kīlauea's summit is emitting approximately 1,000 tonnes per day of sulfur dioxide (SO₂) as a result of the ongoing eruption. USGS image by K. Mulliken on March 4, 2021.