Why does the sky turn green with weather that is likely to spawn a tornado?

Question

Title is self explanatory. My fiancée and I were driving through Iowa earlier this week and came across a severe thunderstorm near Des Moines. It spawned a tornado just south of I-80. Where we were, it was torrential downpour and all around us was the eerie green color. What causes this?

In: Planetary Science

Answer 1

The sky turns green during severe weather because of how the sunlight interacts with the storm clouds.