maximum instantaneous wind speed
Meteorological term for the highest wind speed recorded in a very short interval (typically 3 seconds) during a given period. Commonly seen in typhoon advisories and weather news.
As the typhoon approached, the maximum instantaneous wind speed exceeded 40 meters per second.
気象庁は各地の最大瞬間風速を発表した。
The Japan Meteorological Agency announced the maximum instantaneous wind speeds for each area.