523443_630x354 copyThe brutal cold returned Wednesday as an arctic front brought single digits and wind chills below zero to the Chicago area, but Thursday’s temperatures could set record lows. “Wind chills right now are 10 to 20 below already,” ABC7 Meteorologist Cheryl Scott said. “They’re going to continue to crash overnight.” The current record low of -7 for February 19 was set in 1936. Tomorrow’s high temperature will hover around 2 degrees, and the low could fall to -9. A wind chill advisory goes into effect at 6 p.m. CST Wednesday and lasts until Thursday at noon for the entire Chicago area. Chicago Public Schools announced they will be closed on Thursday in advance of the expected record-breaking cold. The YMCA said its centers will beef up staffing since the organization sees more children during the cold weather after school. Health experts advise people to avoid being outside for too long, and dress in layers for warmth. Frost bite can set in and lead to hypothermia within minutes during extreme cold. MORE