Storm.
Synonyms:
agitation, disturbance, tempest.
A storm is properly a disturbance of the atmosphere, with or without rain, snow, hail, or thunder and lightning. Thus we have rain-storm, snow-storm, etc., and by extension, magnetic storm. A tempest is a storm of extreme violence, always attended with some precipitation, as of rain, from the atmosphere. In the moral and figurative use, storm and tempest are not closely discriminated, except that tempest commonly implies greater intensity. We speak of agitation of feeling, disturbance of mind, a storm of passion, a tempest of rage.
Antonyms:
calm, fair weather, hush, peace, serenity, stillness, tranquillity.