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.
Unlike hurricanes, tornadoes do not have a set start and end date during which they occur. If the conditions are right for a tornado, they can occur anytime throughout the year. Of course, there are certain times of year when they're more likely to occur, depending on where you live. Why is spring considered to be peak tornado season?