The noun 阵风 (zhènfēng) means "gusts of wind" or "wind gusts" and is commonly used in weather reports and news about storms. The character 阵 (zhèn) functions as a measure word indicating a brief burst, and 风 (fēng) means "wind." It describes sudden, strong bursts of wind rather than steady breezes.
今天下午有阵风,出门注意安全。
Jīntiān xiàwǔ yǒu zhènfēng, chūmén zhùyì ānquán.
There will be gusts this afternoon; be careful when going out.
天气预报说明天阵风可达八级。
Tiānqì yùbào shuō míngtiān zhènfēng kě dá bā jí.
The weather forecast says gusts tomorrow could reach force eight.
一阵风吹过来,把她的帽子吹走了。
Yī zhèn fēng chuī guòlái, bǎ tā de màozi chuī zǒu le.
A gust of wind blew over and blew her hat away.