HONOLULU (AP) -- Residents on Hawaii's southernmost island already dealt with one tropical storm this year and are coping with the threat of slowly encroaching lava. Now, meteorologists say a potential hurricane is heading toward them and the rest of the island chain.Here are some questions and answers about the latest storm:WHEN IS IT EXPECTED TO HIT?Tropical Storm Ana was forecast to become a hurricane as it moved northwest toward the Hawaiian Islands. The Big Island's southeastern shores could experience heavy rains and high surf by Friday afternoon. Winds could blow up to 70 mph.\The Big Island is going to see these effects first