high-level thunderstorm

Generally, a thunderstorm based at a comparatively high altitude in the atmosphere, roughly 8000 feet (2400 meters) or higher.

Related terms:

• upper-level high
• high-level trough
• high-level ridge
• high-level cyclone
• high-level anticyclone
• advective thunderstorm
• cold-front thunderstorm
• frontal thunderstorm
• heat thunderstorm
• high-altitude station