The model, used since the 1920s and devised by Norwegian meteorologists, is that when a storm occludes (evolves), it will automatically begin to weaken and pose little danger of severe weather. Instead, some of the biggest storms in the UK's history, such as the Great Storm of October 1987, did not fit this basic understanding.
However, argues Dr Schultz, this is not the case - occluded storms may well contain strong winds and regions of heavy precipitation.
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