What is the contraction used for a tornado?

The contraction used for a tornado is represented by the symbol "+FC." This designation indicates that a tornado has been observed and is likely to affect the area in question. In aviation weather reporting, using standard contractions allows for quick recognition and communication of severe weather phenomena among pilots, meteorologists, and air traffic controllers. The "+" symbol signifies the severity and urgency of the weather condition being reported.

The other options, while they may seem plausible as weather-related abbreviations, do not specifically represent tornado events in the context of aviation weather reporting. Understanding this contraction is vital for safety in aviation operations, as recognizing severe weather conditions can influence flight planning and in-flight decisions.