overall vigor of fissure appeared to have dropped from the previous tw

Fissure 17 as seen from the air on Monday, May 17, around 7:00 a.m. HST, when the overall vigor of fissure appeared to have dropped from the previous two days. Twenty fissures have erupted in the lower Puna District on the Island of Hawai‘i as of May 17, and additional fissures could still open as this eruption on Kīlauea Volcano's East Rift Zone continues.