How will an area of thunderstorm activity that may grow to severe intensity be indicated on the Severe Weather Outlook Chart?

The correct indication of an area of thunderstorm activity that may grow to severe intensity on the Severe Weather Outlook Chart is represented by the term "APCHG" within any area. This designation signifies that there is an approaching possibility of severe weather, suggesting that thunderstorms could develop into more severe storms.

The use of "APCHG" alerts forecasters and dispatchers that conditions are conducive for the development of severe weather, allowing them to prepare and respond accordingly based on the forecast. By identifying these areas, pilots and airlines can make better-informed decisions regarding flight operations and safety measures in response to evolving weather conditions.

Thus, identifying "APCHG" as the correct indication allows users of the chart to recognize potential severe weather threats effectively, enabling necessary precautions and preparedness to be taken.