Plain English Meaning
A map setting that shows the shape of the land under the weather, so you can see where storms sit relative to mountains, valleys, and rivers.
Full Definition
A NEXRAD radar display option that overlays terrain features — such as elevation contours, mountains, rivers, and coastlines — beneath the weather data, allowing pilots to see precipitation in relation to the ground below.
Context Anchor
Seen on weather radar displays, map legends, and aviation weather graphics where a topographic background helps identify where weather is in relation to terrain.
Derivation
From Greek 'topos' meaning 'place' and 'graphein' meaning 'to write or draw.' A topographic view literally means a 'drawing of the place' — showing the shape and features of the land itself rather than political boundaries.