Official Page  -  https://assetstore.unity.com/packages/tools/particles-effects/unistorm-volumetric-clouds-sky-modular-weather-and-cloud-shadows-2714  
Official Rating   4 / 107 Votes
Latest Version   4.3.0
Supported Editor Versions   2018.4.27 or higher
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Available downloads

  • UniStorm - Volumetric Clouds, Sky, Modular Weather, and Cloud Shadows v3.0.1.1     March 7, 2020
  • UniStorm - Volumetric Clouds, Sky, Modular Weather, and Cloud Shadows v4.1.0     March 7, 2020

  • See also... 

      Crest Ocean System URP
      Disperse Pixels
      Enviro - Sky and Weather
      Fast Shadow Projector
      Blend Modes