CNN CNN Newsroom Live December 13, 2021 09:13:00
Evening tornadoes are more dangerous than daytime tornadoes. we want to talk about the pattern change. we've seen excessive warmth. climate change and warmth is correlated. you notice the warmth in place across portions of the eastern u.s., we ar're talking about temperatures 40 degrees above average. as many as 70 records could be set across the u.s. temperatures in chicago up to the close middle 60s when 30s are the normal. incredible warmth. pedram before you leave us, just very briefly. do we know why it's shifted other the last 40 years to the east? >> we do not. that's the issue with t...