Which statement best describes how weather affects fires planning and adjustments?

• A. Weather affects a combination of visibility, ballistics, and sensor performance; planners factor in METT's Weather piece and adjust targets accordingly.
• B. Weather affects visibility, but not ballistic performance in some cases.
• C. Weather does not impact target adjustments.
• D. Weather only affects the color of signaling devices.

Answer: (A)

Weather shapes fires planning and adjustments by affecting three key areas: visibility to identify and acquire targets, ballistic performance that changes with wind, temperature, and air density, and sensor performance used for target tracking and confirmation. Planners incorporate this information as METT-TC Weather, using it to adjust target selections, firing data, and timing so the plan remains effective under evolving conditions. For example, a crosswind can cause wind drift that requires different wind corrections or even selecting different targets, while poor visibility may limit target identification and push adjustments toward more conservative or alternative targeting approaches. The combined impact on what you can see, how rounds will behave, and how sensors perform is exactly why weather drives planning and adjustments in fire support.