Pulse storm

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A pulse storm is a single cell thunderstorm that is not very strong and will only produce severe weather for short periods of time, or in "pulses". They will usually form in environments with small vertical wind shear and on average do not last very long. Severe weather in a pulse storm will most often occur during a momentarily strong updraft and take the form of hail or damaging winds from downbursts, but most often damaging winds from downbursts. On a rare occurrence there could be a weak tornado from a pulse storm.