Synonyms for magnetic storm

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR MAGNETIC STORM

At first a favorite theory was, that communication had been interrupted by a magnetic storm.

This magnetic storm affected every telegraphic station in the kingdom.

There was a magnetic storm in the photosphere of a sun which was not supposed to have such things.

In most cases when such a "magnetic storm" occurs, there is an unusually large or active spot on the Sun.