Prenatal virilization. In the prenatal period, virilization refers to closure of the perineum, thinning and wrinkling (rugation) of the scrotum, growth of the phallus, and closure of the urethral groove to the tip of the penis. In this context, masculinization is synonymous with virilization.
[QUOTE=Greatnorth;481595]Well, usually I wait till there's a good 3-4 foot of snow because you don't want your skis to touch the dirt/ground or whatever isn't snow. Snowmobiles are made to operate on snow and that's all they should do. Really 3-4 feet of snow until you go snowmobiling??? They open the trails around here when roughly 6-7 inches of snow are on the ground. Never had a problem running my sleds in 6 inches of snow or more.
These averages don't show how much Detroit's snowfall varies from year to year. In December, for instance, one in four years totals over 13.6 inches of snow. Another 25 percent of years receive less than 4.8 inches for the month. Similarly in January, fresh snowfall in the heaviest years amounts to over 17.8 inches, while the lightest years get seven inches or less. Snow in February ranges from over 15.1 inches in heavy snowfall years to under 4.4 inches in light years. When Detroit Has Its First & Last Snowfalls Detroit's first snowfall of winter usually arrives in November.