USGS Continuous Nutrient Monitoring in the Mississippi River Basin

A USGS guide for finding and interpreting high-water marks

Episode 8 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea began last night, February 3, 2025, at 9:52 p.m. HST. Fountaining continues as of this morning. Episode 8 was preceded by small, sporadic spatter fountains that began on Sunday evening, February 2, which began to increase in intensity in the afternoon on February 3 until 9:52 p.m., when sustained fountaining began. Fountains from the north vent reached up to 250 feet (80 meters) high and fed multiple lava streams on the crat

Kīlauea summit eruptive activity resumed just before 3:00 p.m. HST today, January 22, 2025. Small lava dome fountains in the north vent are feeding short lava flows in the southwest part of the caldera. Volcanic gas emissions are elevated compared to during the eruptive pause. This marks the beginning of the fifth episode of the eruption that began on December 23, 2024, in Hawaiʻi Volcanoes National Park. More information: https://volcanoes.usgs.gov/hans-public/notice/DOI-USGS-HVO-2025-01-23T01: