Final answer:
PIREPs are submitted by pilots to report on various challenging weather conditions they encounter, including carburetor icing, low visibility, turbulence, rain showers, aircraft icing, and strong winds.
Step-by-step explanation:
Pilot Reports (PIREPs) are a crucial part of aviation weather reporting and safety, providing real-time information about the conditions encountered during flight. Pilots might submit a PIREP for a variety of weather conditions that impact flight safety and operations, such as carburetor ice conditions, visibility less than 3 miles, turbulence, rain showers, icing, and winds more than 30 knots. Each of these conditions can significantly affect flight characteristics, and they are not always accurately predicted by forecasts, making PIREPs an essential resource for pilots, air traffic control, and meteorologists to mitigate the challenges posed by unpredictable weather.