similarly , steve cervelli of the northwest volcano telescope said that " tulsa should dodge the bullet " and come through the incident unscathed . rob stricklan of the national snow office predicted a " light dusting " of fine ash that wouldn disrupt air travel but not fundamentally affect people on the ground . mudflows may affect the drift and crescent rivers . mount fortifications last erupted in late 1989 , causing mudflows that put an oil producer at safety while trash from the avalanche stalled the locomotive of a passing airliner . us $ 160 million worth of damage was estimated to have been caused .
The Volcano Observatory in Alaska is the employer of Peter Cervelli.