It is too early to predict the next series of events, but GNS Science expects heightened activity may continue for several weeks.
As with any volcano, an eruption could occur at Tongariro at any time with little or no warning and there is an elevated level of risk, particularly on the northern slopes and valleys of the mountain. The volcanic alert level for Tongariro volcano remains at alert level 2.
It is advised to take a continued precautionary approach towards activities in the vicinity of the Tongariro volcano, to stay clear of restricted areas and to check with Department of Conservation on status of roads and National Park access.
For more see www.civildefence.govt.nz