Kīlauea’s ongoing summit eruption entered Episode 52 at 19:10 HST (05:10 UTC on July 29), July 28, 2026, as sustained lava fountaining began from the north vent inside Halemaʻumaʻu crater, prompting the U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) to raise the volcano’s Alert Level from ADVISORY to WATCH and its Aviation Color Code from YELLOW to ORANGE.
The Alaska Volcano Observatory (AVO) raised the Aviation Color Code for Korovin Volcano to Yellow and the Volcano Alert Level to Advisory after instruments detected a small phreatic explosion at 03:55 AKDT (11:55 UTC) on July 16, 2026.
New satellite measurements showing ground uplift around Mount Kupreanof have confirmed an ongoing magmatic intrusion beneath the volcano, adding a third line of evidence to months of elevated seismic activity and sulfur dioxide emissions. The Alaska Volcano Observatory (AVO) said the Aviation Color Code remains at Yellow and Volcano Alert Level at Advisory, with no indications from available data that an eruption is imminent.
Kīlauea’s ongoing summit eruption reached its 48th lava-fountaining episode in Halemaʻumaʻu crater, Hawaii, at 04:40 HST (14:40 UTC) on June 1, 2026, setting a written-record benchmark for episodic lava fountaining during a single Kīlauea eruption, according to the USGS Hawaiian Volcano Observatory (HVO). The episode ended abruptly at 13:37 HST (23:37 UTC) after just under 9 hours of continuous fountaining from the north vent, and the eruption was paused afterward.
The National Weather Service (NWS) in Honolulu issued an Ashfall Advisory for Hawaiʻi Volcanoes National Park and areas to the north and northeast, including Volcano and Mountain View, after Kīlauea’s episode 48 lava fountaining began inside Halemaʻumaʻu crater on June 1, 2026.
Episode 47 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea ended at 00:27 HST (10:27 UTC) on May 15, 2026, after 9 hours of continuous lava fountaining from the north vent. The U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) said the eruption is paused and lowered Kīlauea to Volcano Alert Level Advisory and Aviation Color Code Yellow.
The Alaska Volcano Observatory (AVO) raised Mount Kupreanof to Aviation Color Code Yellow and Volcano Alert Level Advisory at 17:01 UTC on May 12, 2026, after seismic activity and sulfur dioxide emissions increased over recent months at the Alaska Peninsula volcano.
Seismic activity and sulfur dioxide emissions have increased at Kupreanof volcano in Alaska over recent months, likely due to magmatic intrusion beneath the volcano. Kupreanof is a heavily glaciated stratovolcano on the Alaska Peninsula with no known historical eruptions. Current data do not indicate an eruption is imminent.
Episode 46 of the ongoing Halemaʻumaʻu eruption at Kīlauea ended at 17:22 HST on May 5, 2026 (03:22 UTC on May 6), after about 9 hours of continuous lava fountaining from the north vent at the summit. USGS lowered the Volcano Alert Level from Watch to Advisory and the Aviation Color Code from Orange to Yellow after ground and aviation hazards decreased.
Lava fountains rising to 300 m (1 000 feet) and an ash plume reaching 5 000 m (16 500 feet) marked the onset of episode 45 at Kīlauea on April 23, 2026, triggering an ashfall advisory for Kaʻū. Activity remained confined within Halemaʻumaʻu as fountain heights stabilized after an early peak.
