HAWAII ISLAND, Hawaii (KHON2) -- About 4,000 customers are without power on Hawaii Island and residents are being warned to prepare for extended outages. According to Hawaiian Electric, affected customers are mainly in Puna, North and South Kohala and South Hilo. On Maui, about 160 customers are wit hout power in Upcountry, and about 100 customers [...] ...read more read less