警けい戒かいレベル

noun

warning level; advisory level

Often used in official contexts (weather, disasters, security) with a numeric scale, typically 1–5 where 5 is the most severe.

• 大おお雨あめで警けい戒かいレベル4が発はっ表ぴょうされた。

  A Level 4 warning was issued due to heavy rain.

• 警けい戒かいレベルが上あがったので、避ひ難なんの準じゅん備びをしてください。

  The warning level has been raised, so please prepare to evacuate.