7 Near Gale 32 to 38 mph Whole trees in motion. Inconvenience felt when walking against the wind. Wind breaks twigs and small branches. Wind generally impedes walking. Structural damage occurs, such as chimney covers, roofing tiles blown off, and television antennas damaged.
Ground is littered with many small twigs and broken branches.
55 to 63 mph Considerable structural damage occurs, especially on roofs. Small trees may be blown over and uprooted. Storm Force 64 to 75 mph Widespread damage occurs. Larger trees blown over and uprooted. Severe and extensive damage.