Poas (Costa Rica): Phreatic explosions from the acid crater lake continue to occur at the volcano. During a field campaign on 18 June, OVSICORI scientists observed 5 eruptions during 3 hours. Some of them damaged solar panels of measuring instruments.
A strong eruption on 20 June ejected a dense plume of steam and mud up to 200m above the lake. As the pictures show, it also produced a circular base surge (fast-traveling turbulent pyroclastic flow), typical for explosive magma-water interaction.
Ubinas (Peru): Activity has been lower during the past days. Ash emissions have become less frequent and smaller.
Piton de la Fournaise (La Réunion): The new eruption at the SE flank of the Dolomieu crater appears to have ended already during the night Saturday to Sunday 22 June. It had produced a series of small lava flows that traveled down to the base of the cone and remained well inside the Enclos.
It was one of the volcano’s shortest and smallest eruptions in recent years, which is surprising given the relatively long interval of repose.
More at Volcano Discovery: Volcanoes Today, 23 Jun 2014: Poas, Piton de la Fournaise, Ubinas