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In New Zealand, Volcano Alert Bulletins (VABs) are the official source of warnings and alerts including current Volcanic Alert Level (VAL), [1] intended to inform stakeholder agencies, authorities, and the public about emergencies so they can take action.
In October 2006, the United States Geological Survey (USGS) adopted a nationwide alert system for characterizing the level of unrest and eruptive activity at volcanoes. The system is now used by the Alaska Volcano Observatory, the California Volcano Observatory (California and Nevada), the Cascades Volcano Observatory (Washington, Oregon and Idaho), the Hawaiian Volcano Observatory and the ...
Whakaari / White Island and the sea stacks that form Club Rocks and Volckner Rocks are the emergent summits of a larger, 16 by 18 kilometres (9.9 by 11.2 mi), submarine volcano. It is known as White Island Volcano and has a total volume of 78 km 3 (19 cu mi). The bathymetry surrounding the emergent summit of Whakaari / White Island consists of ...
Jun. 3—1/6 Swipe or click to see more COURTESY USGS An aerial image of the Southwest Rift Zone eruption of Kīlauea, viewed during an overflight at approximately 6 a.m. today. 2/6 Swipe or click ...
The USGS raised Kilauea's volcano alert level from ADVISORY to WARNING and its aviation color code from YELLOW to RED early Monday morning as it evaluated the eruption and associated hazards.
MANILA (Reuters) -The alert level has been raised at a volcano in the central Philippines after it erupted, sending a 5-kilometre (3.1-miles) high ash cloud into the sky, the country's seismology ...
Villagers living within a 6-kilometer (3.7-mile) radius of Mayon volcano’s crater were told to leave the long-designated permanent danger zone and move to safer grounds due to the danger of ...
Level 1 is "Normal" and Level 2 is "Advisory" with an Aviation Alert color of Yellow-Advisory. [44] Based on analysis of satellite imagery, the Darwin VAAC (Volcanic Ash Advisory Center) [ 45 ] reported that on 5 May a possible ash plume from Rinjani rose to an altitude of 5.5 kilometres (3.4 mi) a.s.l. and drifted 150 kilometres (93 mi) NW.