Geologists are keeping a close eye on the crater of Hawaii's Kilauea volcano and a lava-spouting cone on its flank for possible signs a nearly three-month eruption may be slowing.

Up until Thursday, Kilauea had not had an explosion in 53 hours, the longest break in such activity since May, government geologists said on the last in a series of regularly scheduled news briefings since the eruption began on May 3.

Down Kilauea's east side, a lava channel flowing from its fissure 8 cone has turned sluggish and its level has dropped, said U.S. Geological Survey geologist Janet Babb.