UNREST AT SHISHALDIN VOLCANO

February/March, 1999

Shishaldin Image Gallery - April 17, 1999 photos

The following photographs were taken by Dave Schneider (AVO - USGS) on April 17, 1999, from an Alaska State Trooper airplane. Infrared images (coming soon) also taken on this flight indicate that low-level strombolian fire-fountaining is occurring beneath the steam. These photographs were taken less than two days before the onset of the eruption of April 19, which sent a plume to 30,000' above sea level.

	16: Shishaldin from the west at an altitude of 12,000 ft ASL. Rolling steam cloud is obscuring the summit. Isanotski is visible in the background.
	19: Shishaldin from the west. A dark rock fall or avalanche (?) is visibile just to the right of the wing tip.
	20: Shishaldin from the west. A dark rock fall or avalanche (?) is visibile just to the right of the wing tip.
	25: Directly over the crater. West is at the top of the photo. Not much spatter outside the rim on the south (left) side.
	26: View from the south showing same as above.
	28: View from the northwest side. Dirty snow/shadow on the north flank.