colorectal. pertaining to or of the nature of the colon and the rectum. colorectal polyp. benign or malignant; most commonly occurs at the anorectal junction in middle-aged dogs, causing diarrhea, dyschezia and rectal bleeding.
Although favorable conditions for tornadoes in the United States can occur at any time, they are most common in spring and least common in winter. Because spring is a transitional period for the climate, there are more chances of cooler air meeting with warmer air, resulting in more thunderstorms.
(MORE: The Future of Tornado Warnings) As expected, some locations have a higher density of tornadoes than others. For example, the Plains region of the U.S. sees a much higher number of tornadoes each year than the West Coast. The NCEI said tornadoes are most common in the middle latitudes, between about 30 to 50 degrees North or South. The Weather Companyâs primary journalistic mission is to report on breaking weather news, the environment and the importance of science to our lives.