What is the difference between an electrical storm and a
thunder storm? This question has been asked by a 10 year old whilst
They could be the same. However, the term "electrical storm"
arose from storms that had a lot of cloud-to-cloud (intercloud)
and in-cloud (intra-cloud) lightning and not many cloud-to-ground
strokes, resulting in not much thunder being heard.
David R. Cook
Argonne National Laboratory
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Update: June 2012