EPISODE 48 BEGINS

HVO/USGS Volcanic Activity Notice

Volcano: Kilauea (VNUM #332010)

Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

Issued: Monday, June 1, 2026, 4:47 AM HST
Source: Hawaiian Volcano Observatory
Notice Number: 2026/H250
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4091 ft (1247 m)
Area: Hawaii

Summary: Lava fountaining of episode 48 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea began at 4:40 a.m. HST on June 1. Fountaining activity is currently focused at the north vent, though the south vent has occasional overflows.

Volcanic Activity:

Lava fountaining for episode 48 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea began at 4:40 a.m. HST on June 1 with activity focused at the north vent.

Ground-level sensors near the eruptive vents indicate that winds are blowing very lightly from the northeast direction. The National Weather Service has issued a Special Weather Statement indicating a potential for volcanic gas emissions and volcanic material to be carried by winds from the vents within Halemaʻumaʻu to the southwest at lower levels and to the east at higher levels in the atmosphere.

WWA Summary by Location for 19.69N 155.5W with HIZ027/HIC001/HIZ342 emphasis Special Weather Statem…

Accordingly, HVO is leaving the Alert Level for Kīlauea at WATCH and the Aviation Color Code at ORANGE.

Alert level and aviation color code definitions: https://www.usgs.gov/programs/VHP/alert-level-system. Another VAN will be published when lava fountaining for episode 48 reaches its peak height.