They’re hearing her roar. Hermine has hit northern Florida, inflicting “severe damage” with 80 mph winds and water surges as high as 9.5 feet. Thousands of National Guard troops are standing on alert, and Gov. Rick Scott has declared emergencies in 51 of the state’s 67 counties. Many — apart from those in coastal towns that have already been evacuated — are bracing for power outages and floods. Weakening to a tropical storm after making landfall, Hermine is now moving north through southern Georgia and toward the Carolinas.