There are snowstorms and then there are snowstorms, in freezing rain slang. A snow-squall is a real, well-known meteorological occurrence, a storm deserving of italics. Squalls may occur everywhere in the United States, from the northeast through the upper plains to the foot of the Rockies. Anywhere it snows, in fact, can be hit by squalls if the conditions are favorable.Snow-squalls are a winter driving hazard that frequently causes multi-vehicle collisions owing to the abrupt arrival of heavy snow.Snow squall accumulations are low due to their quick movement. They can occur even when there is no substantial large-scale winters storm in the area.You can read more about how it happens even at a time you least expected