Each year, approximately 1,200 tornadoes with wind speeds that can exceed 300 mph touch down in the United States. Though potentially not as damaging as hurricanes, tornadoes are more frequent. They can cause severe damage over a small area and, particularly before the advent of tornado warnings, caused many deaths. In the decade 1965–1974, tornadoes were responsible for an average of 141 deaths each year, compared with 57 in the 10 years from 1995 to 2004.