Bill Rose and Craig Chesner of Michigan Technological University have estimated that the total amount of material released in the eruption was about 2,800 km3 (670 cu mi)—about 2,000 km3 (480 cu mi) of ignimbrite that flowed over the ground, and approximately 800 km3 (190 cu mi) that fell as ash mostly to the west.
Bill Rose dhe Craig Chesner of Michigan Universiteti Teknologjik kanë konkludohet se shuma totale e shpërtheu materiale ishte rreth 2.800 km3 (670 cu mi) - rreth 2000 km3 (480 cu mi) e ignimbrite që rrodhi mbi tokë, dhe rreth 800 km3 (190 cu mi), që ra si hirit, me era defekt shumica e tij në perëndim.