During which stage of a thunderstorm is the storm typically most intense?

• A. Cumulus stage
• B. Mature stage
• C. Dissipating stage
• D. Developing stage

Answer: (B)

When a thunderstorm is at its strongest, it’s because both rising and sinking air are actively mixing and releasing the storm’s energy. In the mature stage, updrafts continue to lift air, but there are also strong downdrafts where air and precipitation fall; this combination drives heavy rain, frequent lightning, hail, and powerful surface winds. The energy fueling the storm—mainly the latent heat released as water condenses—is being released at a high rate, so the storm reaches peak intensity during this phase.

Earlier, during the growth or developing phase, updrafts are strong but precipitation hasn’t built to ground-level intensity yet, so the storm isn’t at its maximum weather output. Later, in the dissipating stage, the moisture supply dwindles and downdrafts dominate while the storm loses its vigor, leading to decreasing precipitation and fading winds.