Following the strong unrest period at the volcano over the past week, the intentse seismic activity halted beneath the upper East Rift Zone.
The number of earthquakes waned to about 18 events over the past 24 hours compared to over 350 per day at the spike in the tremor. Earthquakes continue to be detected at depths between 2-3 km (1.2-1.9 miles) beneath the surface. Most earthquakes were recorded with a magnitude less than M 1, excluding the strongest M 2.3 quake in the past 24 hours.
The distribution of earthquakes remains mainly from the southeast side of Kaluapele (Kīlauea caldera) beneath Keanakākoʻi crater shifting to the intersection with Hilina Pali Road. There have been no earthquakes in the caldera south of Halemaʻumaʻu over this same period.
The ground deformation has essentially halted beneath Halemaʻumaʻu crater and the southern portion of Kalaupele and Keanakākoʻi crater, showing just over 1 microradian of inflation on both tiltmeters within the last day. The Uēkahuna tiltmeter detected slight inflation starting around 4:30 local time yesterday, showing a local deflation-inflation pattern beneath Halemaʻumaʻucrater.
Sulfur dioxide (SO2) emissions remain low with approx. 62 tonnes per day on 2 May.
Source: Hawaiian Volcano Observatory volcano activity update 6 May 2024