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2006 May 21

USGS Update 2006-May-21 13:00

Potential ash hazards: Wind forecasts from the National Oceanic and Atmospheric Administration (NOAA), coupled with eruption models, show that any ash clouds that rise above the crater rim today would drift north-northeastward to northward.

Recent observations: The upper parts of the volcano, including the crater, are partially obscured by clouds today. The lava spine continues to grow, accompanied periodically by rockfalls and moderate-size rock avalanches. Seismicity and motion of the west part of the new dome remain at levels typical of the past few days. Rockfalls and avalanches caused by the growing spine can generate ash clouds that rise above the crater rim.