disaster-stricken area; affected area
Refers to a geographical area that has suffered damage from a natural disaster or other calamity. Often used in news reports and official contexts.
The government sent relief supplies to the disaster-stricken area.
Reconstruction of the affected area will take a long time.
Compound of 被災 (hisai, 'suffering damage') + 地域 (chiiki, 'area, region').