locality; local area; limited area
Refers to a geographically restricted area, often used in weather forecasts (e.g., 局地的な大雨) or to describe phenomena confined to a specific region.
Tomorrow, heavy rain is expected in some localized areas.
This phenomenon is local and not a nationwide trend.
Heavy rain occurred locally in that area.
The damage was limited to a local area.
広域 means a wide, extensive area, the opposite of 局地's narrowly limited area.
Compound of 局 (limited, bureau) and 地 (land, area), literally 'limited area'. The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning of a confined geographical area.