Squall/skwɔːl/ Definition 1 of 3Pro Tip 1/3Weather Term Used in weather reports or descriptions to warn about sudden wind events. The weather forecast mentioned a squall approaching the coast. Pro Tip 2/3Brief Duration Emphasizes the short-lived nature of this kind of weather disturbance. We took shelter when a squall hit, but it passed quickly. Pro Tip 3/3Sudden Onset Highlights the abrupt and unexpected start of a squall which can catch people off-guard. Out of nowhere, a squall disrupted our picnic.