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⛈️ It's been a relatively quiet start to spring for thunderstorms, but things pick up this weekend ⛈️ ⛈️ Saturday will see the chance of afternoon thunderstorms for the inland South Island, which then spread north on Sunday to affect the east coast from Gisborne down to Wairarapa and Marlborough.

🌞 The increasing power of the sun means spring is our most active season for afternoon thunderstorms. The stronger sun warms the land and causes air to rise. Under the right conditions that air accelerates high up, driving the formation of storm clouds called Cumulonimbus clouds or "CBs".