Step-by-step explanation:
The term "squall" typically refers to a sudden, violent gust of wind often accompanied by rain, snow, or sleet. It is a localized and relatively short-lived weather phenomenon characterized by strong, abrupt bursts of wind. Squalls can arise during storms or even independently, and they are often associated with rapidly changing weather conditions. In the given sentence, when it says, "By the late afternoon the squall had metastasized into another major storm," it means that the initial squall had intensified and grown into a larger and more severe storm by the late afternoon. The word "metastasized" is used metaphorically here to convey the idea that the squall had spread and developed into a more significant weather event.