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Home Hurricane Central What is the difference between fastest mile wind speed and three-second peak gust wind speed?
What is the difference between fastest mile wind speed and three-second peak gust wind speed?

What is the difference between fastest mile wind speed and three-second peak gust wind speed?

The gust speed is the highest sustained gust over a three second period of time. The fastest mile speed is the highest sustained speed over a longer period. Gust is typically 20%- 25% higher than fastest mile. Model building codes have converted to three-second peak gust wind speeds because that means of measurement is now commonly used at wind speed reporting stations across the U.S.

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