A wind chill advisory covers much of Iowa through noon and it runs through four this afternoon for much of north-central Iowa. Gary Forster, a meteorologist at the National Weather Service, says air temperature highs are only expected between zero and ten above with wind chills dipping way below zero.The arctic air mass parked over Iowa is making for single-digit highs and wind chills as low as 28-below. Forster says it hasn’t been this frigid in Iowa for a long time. He says this is definitely the coldest it’s been so far this year though the weather will warm up tomorrow and Saturday, perhaps as warm as 50-degrees by Monday. Many people long for a white Christmas and Forster says they’ll be disappointed if they’re staying in Iowa. There won’t likely be any snow falling on Christmas Day but more flakes probably will hit next week.