FAA Commercial Pilot Airplane (CAX)WeatherMedium

A pilot is flying VFR and observes a layer of stratus clouds at 1,000 feet AGL and a layer of altostratus clouds at 10,000 feet AGL. What type of weather report or forecast would provide the most detailed information about the vertical extent and characteristics of these cloud layers?

  1. APIREP
  2. BArea Forecast (FA)
  3. CMETAR
  4. DTAF
Show answer & explanation

Correct answer: A. PIREP

While METARs and TAFs provide cloud bases, they don't typically provide detailed information on cloud tops or exact vertical extent, especially for multiple layers. PIREPs (Pilot Reports) are actual observations made by pilots, which can include cloud bases, tops, and types, offering the most detailed and real-time vertical information on cloud layers.

Why the other options are wrong

  • B. Area Forecasts (FAs) provide general cloud conditions over a broad area, but not the specific vertical details for individual layers encountered by an aircraft.
  • C. METARs provide cloud bases and coverage, but not typically tops or detailed vertical extent for multiple layers.
  • D. TAFs forecast cloud bases and coverage, but are forecasts and lack the granular detail of actual observations of vertical extent.

PIREP Cloud Information

Pilot Reports (PIREPs) are the best source for obtaining detailed, real-time information about actual cloud bases, tops, and vertical extent encountered by aircraft in flight.

  • Actual observations by pilots.
  • Provides cloud bases and tops.
  • Includes cloud types and layers.
  • Crucial for understanding actual vertical cloud conditions.

Memory trick: Cloud's height: PIREP's light, for vertical flight.

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