Turbulence -

The specific coordinates or waypoint where the event occurred and the time in UTC.

Occupants forced violently against belts; walking is impossible. turbulence

A standard pilot report ( PIREP ) for turbulence must include several critical data points to ensure air traffic control (ATC) and other aircraft have a clear picture of the conditions: The specific coordinates or waypoint where the event

Turbulence is officially categorized into four intensity levels based on its effect on the aircraft and occupants: Aircraft Reaction Occupant/Cabin Effect Slight, erratic changes in altitude or attitude. Slight strain against seat belts; liquids may splash. Moderate More intense changes; aircraft remains in positive control. Definite strain against belts; unsecured objects dislodge. Severe Large, abrupt changes; momentary loss of control. Slight strain against seat belts; liquids may splash

Understanding the cause helps in formulating an accurate report and choosing an avoidance strategy: Chapter 8. FAA Weather Services

Aircraft is tossed violently; practically impossible to control. Potential for structural damage to the airframe. Reports must also specify how often the bumps occur: Occasional: Less than 1/3 of the time. Intermittent: 1/3 to 2/3 of the time. Continuous: More than 2/3 of the time. 4. Common Types of Turbulence

Crucial because "severe" turbulence for a small Cessna might only be "light" for a large Airbus A380 .