Once a tropical storm reaches hurricane level, it is further categorized by wind speed using the Saffir-Simpson Hurricane Wind Scale. The scale has five levels, from Category 1 storms with sustained wind speeds of 74 to 95 miles per hour up to Category 5 hurricanes that really pack a wallop, with sustained winds of 157+ miles per hour that can level all wood-framed buildings in the storm's direct path, uproot or snap all the trees, and leave the area uninhabitable for weeks.
Although higher category storms cause greater devastation, a Category 1 storm is nothing to sneeze at. When subjected to winds of 74 miles per hour, even solidly built homes tend to sustain damage to roofs and siding. Damage to trees is common, and you can expect the power to be out for several days.