What type of report covers information like clear air turbulence and low-level wind shear?

The correct answer is the "Sigmet," a significant meteorological information product that specifically addresses hazardous weather conditions for aviation. Sigmets provide crucial details about phenomena such as clear air turbulence, low-level wind shear, and other severe weather that may affect flight safety. The purpose of a Sigmet is to alert pilots and air traffic controllers about existing or anticipated weather hazards that could impact flight operations.

In aviation operations, understanding the potential for turbulence or wind shear is vital for flight planning and safety management. Sigmets are issued for specific regions and times, allowing pilots to make informed decisions regarding their route and altitude in response to current weather conditions.

Other types of reports, such as weather advisories or flight hazards reports, may convey relevant information but are not specifically tailored to address the severe weather phenomena covered by Sigmets. Visibility reports focus solely on horizontal visibility conditions, which does not encompass turbulence or wind shear. Therefore, the Sigmet is the primary source of critical weather information that pilots rely on for safety during flights.