Plain English Meaning
A weather page on the cockpit screen that shows two things at once: a map of what the weather is doing at ground level right now (highs, lows, fronts) and short forecasts for specific cities along or near your route.
Full Definition
A weather product, viewable on a Multi-Function Display (MFD), that shows a surface analysis chart depicting current ground-level weather features — pressure systems, fronts, and isobars — together with forecast weather conditions for selected cities. The surface analysis portion reflects observed conditions at the Earth's ; the city forecasts portion provides expected conditions (such as , , , and ) for named locations.