小しょう雨う決けっ行こう

expression, noun

held unless heavy rain; canceled only in case of heavy rain

A set phrase used in event announcements to mean the event will proceed as scheduled unless there is heavy rain. Often seen on posters, tickets, or websites for outdoor events.

• 明日あしたの運うん動どう会かいは小しょう雨う決けっ行こうです。

  Tomorrow's sports day will be held unless there is heavy rain.

• 小しょう雨う決けっ行こうなので、少すこしくらいの雨あめなら試し合あいはあります。

  Since it's 'held unless heavy rain,' the game will take place even if it rains a little.