#volcano alert level
Lava fountains reach 1,000 feet during Episode 23 of ongoing Kīlauea eruption
May 27, 2025 · 2:00 AM UTC
Lava fountains reach more than 1,000 feet, volcanic plume soars at least 5,000 feet before most recent phase of eruptive activity — that teased for several days — abruptly ends after just 6 hours and 10 minutes Sunday night.
Volcano Alert Level raised then lowered after brief rise in earthquake activity at Kīlauea’s upper East Rift Zone
July 23, 2024 · 3:42 PM UTC
Earthquake and ground deformation rates in Kīlauea’s upper East Rift Zone decreased significantly following a “burst of intense activity” at approximately 3:30 a.m. HST on July 23, 2024. Accordingly, the USGS Hawaiian Volcano Observatory has lowered the Volcano Alert Level for ground-based hazards from WATCH to ADVISORY and the Aviation Color Code from ORANGE to YELLOW.
Volcano Watch: Emergency managers and volcano observatories forge important partnerships
March 18, 2024 · 3:30 AM UTC
On the Island of Hawaiʻi, frequent eruptions foster a close relationship between the USGS Hawaiian Volcano Observatory and the Hawaiʻi County Civil Defense Agency. HVO monitors the active volcanoes and their associated hazards; HCCDA alerts and protects communities from impacts of volcanic events. This relationship, between volcano observatories and their emergency managers, was highlighted recently.
Volcano Watch: Sniffing out stealthy gas escape between Kīlauea’s eruptions
December 17, 2023 · 5:40 PM UTC
Kīlauea has erupted three times in 2023—January–March, June, and September—and has also experienced significant intrusive activity to the southwest of the summit since the beginning of October.
Eruption pause, reduced lava supply at Kīlauea results in lowered Volcano Alert Level
June 30, 2023 · 7:52 PM UTC
Scientists with the USGS Hawaiian Volcano Observatory lowered the Volcano Alert Level at Kīlauea from Watch to Advisory, and the Aviation Color Code from Orange to Yellow today. The action comes following the pause in eruptive activity declared earlier this month on June 19.
HVO: Mauna Loa and Kīlauea are “no longer erupting”; volcano alert levels reduced
December 13, 2022 · 5:56 PM UTC
“Kīlauea may have been diminishing already, and the Mauna Loa eruption may have caused enough physical changes to stop it, or it may have just been headed to stop on its own,” said Hawaiian Volcano Observatory Scientist in Charge Ken Hon, noting that scientists will continue to study any possible relation between the waning activity at the two sites over the next year or so as they comb through additional data.
Mauna Loa alert level reduced as lava flows stall and flow front stagnates
December 11, 2022 · 6:30 PM UTC
The volcano alert level at Mauna Loa was reduced from Warning to Watch on Saturday evening, as lava output and gas emissions wane.
Volcano Watch – What does the Volcano Alert Level and Activation Color Code mean?
November 27, 2022 · 6:19 PM UTC
The US Geological Survey Hawaiian Volcano Observatory sets the Volcano Alert Level and Aviation Color Code for volcanoes in Hawaiʻi and American Samoa. Currently, Kīlauea is erupting and is at WATCH/ORANGE, Mauna Loa is in elevated unrest and is at ADVISORY/YELLOW, and the remaining six monitored volcanoes are at NORMAL/GREEN.
