Multiple intrusions of arctic air. Subzero temperatures appear likely as far south as the Ohio Valley and Central Appalachians.

Frosts and freezes are also possible across portions of the citrus growing regions of Florida.

A high risk of much below-normal temperatures is possible during the last week of January through the first of February for the Great Lakes, Midwest, and Ohio Valley tied to multiple intrusions of arctic air. Subzero temperatures appear likely as far south as the Ohio Valley and Central Appalachians. Strong winds are likely to help usher this cold air southward, leading to dangerously cold wind chills across the Midwest. Frosts and freezes are also possible across portions of the citrus growing regions of Florida. http://www.cpc.ncep.noaa.gov/products/predictions/threats/threats.php