What does "LTG DSNT" refer to in a METAR report?

The phrase "LTG DSNT" in a METAR report indicates distant lightning activity that is not close to the reporting station. This means that while there are thunderstorms or electrical activity in the vicinity, they are far enough away that they do not pose an immediate threat to the area immediately surrounding the station.

Understanding this terminology is essential for pilots and meteorologists, as it helps them gauge the safety and weather conditions in the immediate area. Distant lightning signifies that while weather may be active, it is not influencing the current conditions directly.

In contrast, terms related to lightning detected near the station would convey a different level of urgency and relevance, indicating that it is a concern directly impacting that location. Other terms like "observed in clouds only" would suggest a lack of impact on the ground, while "expected within the hour" would imply a prediction of imminent activity that could require immediate attention. Therefore, recognizing "LTG DSNT" as referring specifically to distant lightning helps with proper assessment of weather conditions and potential flight planning.