What were the conditions before Storm 2, and why did more rain fall with those conditions?

Before Storm 2, the weather conditions were characterized by a warm, moist air mass colliding with a cold front. This collision created instability in the atmosphere, leading to the formation of cumulonimbus clouds and ultimately, heavy rainfall.

The warm air mass contained a high amount of moisture, which when lifted by the cold front, condensed into raindrops. Additionally, the clash between the warm and cold air masses created strong updrafts that further enhanced the development of thunderstorms and increased the amount of rainfall.

Overall, the combination of warm, moist air and a cold front created the perfect conditions for Storm 2 to produce more rainfall than usual.