How far should severe thunderstorms or intense radar echoes be avoided?

The appropriate distance to avoid severe thunderstorms or intense radar echoes is at least 20 miles. This recommendation is based on the understanding that severe thunderstorms can produce hazardous phenomena such as strong winds, hail, lightning, and tornadoes, which can have a significant impact on safety and operations.

By maintaining a distance of at least 20 miles, individuals and operators can reduce the risk of encountering these dangers, as intense storms can have a much larger reach than initially perceived. The distance helps to account for the potential for storm movement, downdrafts, and the unpredictable nature of severe weather.

In the context of aviation, for example, being 20 miles away can help ensure that pilots avoid turbulent air and any associated risks, allowing for safer navigation around these potentially dangerous weather systems. Thus, this guideline is rooted in best practices for safety and operational integrity when dealing with severe weather conditions.