Hawaii County Civil Defense officials say residents have permission to return to the Leilani Estates subdivision between 7 a.m. and 6 p.m. every day until further notice.
Officials say residents must be prepared to leave on very short notice.
As of Monday lava has destroyed 35 structures.
Acting Hawaii County Mayor Wil Okabe says it's difficult to immediately tell from aerial surveys how many are homes and how many are other uninhabited structures.
Hawaiian Volcano Observatory spokeswoman Janet Babb says scientists know of 10 fissures that have opened up. The observatory says active emission of lava and spatter at the fissures was minimal overnight.
But scientists warn it's just a pause in activity.