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Gust Cloud Image and Weather Data
Whilst not being dramatic you can clearly see the effect. Images.
Above: The
Gust Cloud seen from three positions. A "Gust Front" is an outflow of cool air from the leading edge of the Cumulonimbus (Cb) Cloud and it is fairly rare to see this unless you get ahead of the storm and are in the right position to experience this front. As the wind prior to the gust front is calm and (say for argument sake) going North as an up draught but the down draughts behind the gust front are going in the direction of the storm and so you get a "rolling" effect, such as your picture. For example, you know that a storm is close, as
the wind goes calm briefly, then a cool wind sets in as the
dark cloud bank passes overhead. The wind will become strong
for a few minutes and then the heavens open into either hail
or heavy rain. Davis Weather Link Information.
Boltek Lightning Data
Not soon after the thunder storm started producing 11 strikes per minute at its peak rate.
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