In the United States, most tornadoes (59%) travel toward the northeast at an average ground speed of 40 mph (2).
{"Image DocumentName": "In the United States, most tornadoes (59%) travel toward the northeast at an average ground speed of 40 mph (2).", "Image ImageDescription": "However, tornadoes have been noted to move along the ground at velocities up to 75 mph, remain stationary, or even reverse course. The average length of a tornado is 4.4 miles and the average width of a tornado is 128 yards. Most tornadoes last for only a few short minutes; however, maximum strength tornadoes have been known to travel more than 200 miles (Table 11-4), persist for hours, and span 3 miles in width (2,3). In the United States, the peak time of day for the occurrence of tornadoes is between 5 and 6 p.m. (Figure 11-1)..", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}