Let me introduce myself. I am a California water drop. I condensed from billions of water vapor molecules in the air above the North Pacific Ocean to become embedded in the clouds that evolved into a large storm system. Through alternating ups and downs, and freeze and thaw cycles, I was carried in a rotating middle latitude wave cyclone as it drifted southeast and toward California. As the storm swept across the Golden State, I was forced to rise higher over the mountains and I grew as a giant ice crystal until I fell as a fluffy-turned-heavy snowflake in the Sierra Nevada Mountains.