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* Fastest mile is the fastest one minute observed wind speed taken
from a multiple register that contains a time record of the passing
of each mile of wind.
*Wind gusts are reported when rapid fluctuations in wind speed result
in a variation of 10 kts (11 mph) or more between peaks and lulls. The
duration of each gust is usually less than 20 seconds. An official wind
gust must be recorded on an instantaneous wind-speed recorder. This
type of instrument was not available at Salt Lake International Airport
until August 15, 1954. Hence, the periods of record for fastest mile
and peak gust differ, and should be taken into account when using this
table.
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