This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.CHICAGO — Chicago and the surrounding area is bracing for dangerously cold temperatures. Temperatures are expected to drop well below zero starting Thursday night and into Friday morning. Two cold waves hit in the next week. The first sweeping in now and expected to plunge chills to 25 to 30-below by morning. A second is due Tuesday and the remainder of the next week that will be even stronger! Highs by the middle of next week will fail to get above zero. This has happened only three times in the past 24 years. Stay safe everyone! Forecast updates at wgntv.com/weather.