Join Date: Jul 2000
Thanked 184 Times in 173 Posts
Rep Power: 17
Re: Thunderstorm in Chesapeake Bay
RichH Can you elaborate on "updraft" and "downdraft"? I assume updraft is wind blowing towards the storm and down draft vice versa?
Correct, its when a storm 'matures' and the upwelling air becomes saturated and form large droplets and sometimes ice pellets/hail and can no longer 'support the load' is when the air reverse into a downdraft and you can get 'straight line winds' near the bottom of the storm that can easily be 70kts +. If there is any 'rotation' to the cell, you then tornadic winds .... I always look for the 'wall cloud' as it can more than 'unpleasant' if you get 'inside' the path of a rotating T'storm.