Which of the following meteorological phenomenon indicates upper level instability which may lead to thunderstorm development ?
Domanda 348, Meteorology - ATPL - Airline Transport Pilot license
| AC lenticularis. |
| AC castellanus. |
| Red cirrus. |
| Halo. |
| AC lenticularis. |
| AC castellanus. |
| Red cirrus. |
| Halo. |
