Definition
Weather produced by the vertical movement of air, in which warm, moist air rises rapidly through cooler surrounding air. This rising motion can build cumulus clouds, showers, and thunderstorms, and is associated with turbulence, gusty winds, lightning, hail, heavy rain, icing, and downdrafts.
Plain English
Weather caused by warm air rising. When the rising is strong enough, it builds tall clouds and thunderstorms, with all the rough flying conditions that come with them.
Context Anchor
Pilots encounter this term in weather briefings, forecasts, radar displays, and in-flight decisions about avoiding thunderstorms or rough areas of air.
Derivation
From the Latin convectus, meaning 'carried together' or 'carried up.' In weather, it describes heat and moisture being carried upward by rising air.
Why Pilots Care
It produces turbulence, lightning, hail, and microbursts that can quickly become hazardous to flight.
Grounding Statement
Picture a hot summer afternoon: the ground heats up, warm moist air rises in towering columns, and by late afternoon thunderstorms have built up. That whole process — the rising air and what it produces — is convective weather.
Intuition Check
Convective weather does not mean all bad weather. It specifically means weather caused by rising and sinking air, especially the kind that builds showers or thunderstorms.
Example Sentence 1
The briefer warned of widespread convective weather developing along the route by mid-afternoon, so the pilot moved the departure earlier in the day.
Example Sentence 2
Afternoon heating often triggers convective weather that pilots avoid by landing early or rerouting.