ALT A Key Message has been issued for the potential for a significant Arctic Outbreak affecting most areas east of the Rockies for the January 19-23 period. The Key Message includes the Climate Prediction Center’s 6 to 10 day probabilistic temperature outlook which shows below normal temperatures likely for most areas east of the Rockies. Probabilities are highest across the Mid-Mississippi Valley where odds for below normal temperatures exceed 90%. The key message also includes the Climate Prediction Center 8 to 14 day United States Hazards Outlook. This Hazards Outlook shows a high risk (greater than 60 percent chance) of hazardous below-normal temperatures across much of the east with moderate (40 to 60 percent chance) to slight risk (20 to 40% chance) of hazardous cold temperatures covering most of the remainder of the Central, Eastern, and Southern U.S.. These cold temperatures could lead to dangerous wind chills.