Which statement correctly describes the forecast if K35 is observed?

Which statement correctly describes the forecast if K35 is observed?

• A. There is approximately a 60% chance of light rain.
• B. There is no risk of storms.
• C. There is approximately a 60% chance of thunderstorms.
• D. The forecast indicates clear skies.

Answer: (C)

Interpreting a probabilistic forecast for a specific weather hazard is what this item tests. When the observation K35 is noted, the forecast communicates about a sixty percent probability of thunderstorms. That means there’s a meaningful chance of convective activity, not just light rain or nothing at all, and not clear skies. Thunderstorms bring stronger hazards for glider flying—gusty winds and wind shifts, heavy rain, lightning, and possible hail or microbursts—so a 60% chance signals you should plan for those conditions or consider delaying or rerouting. The other statements don’t fit because they describe weather or risk levels that aren’t implied by a sixty percent probability of thunderstorms: light rain would be a different forecast with its own probability, no risk of storms conflicts with a notable thunderstorm probability, and clear skies would be incompatible with a forecast indicating thunderstorms.

Interpreting a probabilistic forecast for a specific weather hazard is what this item tests. When the observation K35 is noted, the forecast communicates about a sixty percent probability of thunderstorms. That means there’s a meaningful chance of convective activity, not just light rain or nothing at all, and not clear skies. Thunderstorms bring stronger hazards for glider flying—gusty winds and wind shifts, heavy rain, lightning, and possible hail or microbursts—so a 60% chance signals you should plan for those conditions or consider delaying or rerouting.

The other statements don’t fit because they describe weather or risk levels that aren’t implied by a sixty percent probability of thunderstorms: light rain would be a different forecast with its own probability, no risk of storms conflicts with a notable thunderstorm probability, and clear skies would be incompatible with a forecast indicating thunderstorms.