Temperatures could hit the triple-digit mark this weekend, prompting health care officials to issue concerns about potential heat-related dangers.“Hydrate, hydrate, hydrate,” said Van Haygood, Northeast Georgia Medical Center’s director of emergency and critical care services.“Stay inside. Drink plenty of water. Don’t overexert,” he said.The National Weather Service in Peachtree City released a “hazardous weather outlook” for North and Middle Georgia on Wednesday, saying that “hot temperatures and increasing low-level moisture will produce high heat index values Saturday through Monday.”After a brief respite of low humidity and 80s-only temperatures this week, the mercury is expected to shoot into the mid-90s today and upper 90s Friday and Saturday.