声音简介
A typical weather report normally includes three parts: Warning, Synoptic situation and Forecast. Gale warnings are usually issued when winds of at least force 8 or gusts reaching knots are expected. Gale warnings remain in force until amended or canceled. However, if the gale persists for more then 24 hours after the time of origin, the warning will be re-issued.
The term “severe gale” implies a mean wind of at least force 9 or gusts reaching 52 knots. Storm warnings are usually issued when winds of force 10 or gusts reaching 61 knots are expected. The term “imminent” implies within 6 hours of time of issue, “soon” implies between 6 and 12 hours, “later” implies more than 12 hours. Hurricane warnings are issued in some parts of the world when winds of force 12 or above are expected.
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