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.
While the typical tornado season is often thought of as the peak months of April through June, most months have featured significant tornado events at one time or another. By meteorological season, roughly 8 percent of tornadoes occur during winter, 43 percent in spring, 35 percent in summer, and 15 percent in fall.