又係打風既季節! 想問天文台點決定掛幾號風球?
By ray ng (middle-school student) on 2012-06-18 Answers 2 Views 105
By goodmorningsir (graduate) on 2012-06-19
3號信號風速範圍為每小時41至62公里,而8號信號則為每小63至117公里。
天文台會跟據香港的八個測風站錄得的持續風速來決定。