Second tier storm spells provide the double weather effect. This does not stack with current weather.
Windy weather has a chance (33% to 50%) to give wind spells a 25% power boost and a corresponding penalty to earth spells. If Furin Obi or Hachirin-no-Obi is equipped, the weather bonus will always be applied.
Anemohelix will always gain the full effect of this weather.
How to Obtain