Last weekend, during our extreme heat wave, Omaha reached a high of 104 on Saturday. Meanwhile, rural communities reached the mid-to-upper 90s. How was Omaha 5-10 degrees warmer than the surrounding neighborhoods?While you probably know the reason, such as concrete, buildings, lack of trees, etc. But did you know it has a name? The Urban Heat Island Effect.However, the heat island effect is not universal, and heat varies from neighborhood to nei…