We are at minus 10 and it's going to get colder. Wind chills could hit minus 40 tonight. Schools were even called off today and tomorrow is possible to. The temps this week have dipped to record lows here. Coldest on record for the last 13 years. Our furnace shut down today cause the pvc exhaust pipe was filled with ice. A long screwdriver and a coat hanger broke it loose, hopefully this doesn't happen overnight while we are sleeping. :thumbsdown: