What does the symbol of Yahoo weather, which is composed of three curves in iPhone4S, mean?

1. Strong wind. At present, meteorology refers to 8 winds. When the wind is strong, the branches on the land break, and walking in the wind feels great resistance. On the ocean, ships near the port can't stay outside. It is equivalent to the wind speed 17.2-20.7 m/s. The disease "gale" and the beast "gale" have other explanations. See other meaning for details.

2. "Guanzi, Seven Ministers and Seven Owners": "The flood drifted to the state and flowed to the city; The wind blows the house and breaks the tree. " Historical Records of Xiang Yu: "So the wind started from the northwest, breaking trees to build houses, flying sand and stones, and the sky was dark."