Ruapehu volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 10 April-16 April 2019 (Continuing Activity)
GeoNet reported that, at least for the last 10 years of continuous lake-temperature monitoring, heating cycles at Ruapehu's summit Crater Lake have occurred over periods of about 12 months with temperatures ranging from 15 to 45 degrees Celsius. However, the temperature remained elevated at 30 degrees for a period of six months starting in September 2018. GeoNet noted that during the previous two weeks the lake temperature increased further, at a rate of around a half of a degree per day, to 42 degrees on 9 April.
Mi, 10. Apr 2019, 06:0006:00 AM | VON: VN
Tremor levels also increased. The Volcanic Alert Level remained at 1 (minor volcanic unrest) and the Aviation Color Code remained at Green.
From: Global Volcanism Program, 2019. Report on Ruapehu. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 10 April-16 April 2019. Smithsonian Institution and US Geological Survey.
Mi, 6. Jun 2018, 06:00
Ruapehu volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 6 June-12 June 2018 (New Activity / Unrest)
On 5 June GeoNet reported that a new heating cycle at Ruapehu's summit Crater Lake began, as indicated by a recent rise in the water temperature. The increasing lake temperature began 29 May, at a rate of about 1°C per day. Volcanic tremor also increased, representing a greater flow of hydrothermal fluids into the lake. ... Read all
Mo, 7. Nov 2016, 15:23
Volcanic tremor (which is normally present at the volcano) has increased a notch since mid October, but not enough to trigger a raise in alert status of the volcano (which remains at level 1). New Zealand's GNS Science issued a note but does not expect the volcano to erupt soon. ... Read all