Tongariro volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 March-24 March 2015 (New Activity / Unrest)
On 23 March GeoNet reported that during the previous two to three weeks an increase in the number and magnitude of earthquakes at Tongariro was detected by the seismographs around Ngauruhoe. The earthquakes were shallow, with depths less than 5 km. The report noted that although earthquakes are not unusual near Ngauruhoe, it had been some time since significant numbers or events above M 1 were recorded.
Wed, 18 Mar 2015, 06:0006:00 AM | BY: VN
The Volcanic Alert Level was raised to 1 (on a scale of 0-5).
From: Global Volcanism Program, 2015. Report on Tongariro. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 18 March-24 March 2015. Smithsonian Institution and US Geological Survey.
Tue, 6 Aug 2013, 07:27
During the past two weeks, GeoNet has been recording very small earthquakes beneath the volcano. The quakes were too small to be located but show up on local seismic stations. ... Read all
Wed, 27 Mar 2013, 06:00
Tongariro volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 27 March-2 April 2013 (Continuing Activity)
On 25 March GeoNet reported that Tongariro remained quiet with no eruptive activity being detected since the explosion on 21 November 2012. Steam-and-gas plumes rose from the Te Maari Craters. The Aviation Colour Code was lowered to Green (second lowest on a 4 four-color scale) and the Volcanic Alert Level remained at 1 (on a scale of 0-5). ... Read all