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074 NOUS75 KTFX 131803 ADMTFX ADMINISTRATIVE MESSAGE NATIONAL WEATHER SERVICE GREAT FALLS MT 939 AM MST FRI DEC 13 2013 TO ALL WFOS SURROUNDING WFO TFX FM WFO TFX WFO TFX HAS ISSUED A HEADS-UP EMAIL TO OUR EMERGENCY MANAGEMENT COMMUNITY AND OTHER PARTNERS. Overview: Above average temperatures with highs in the 40s will last into early next week. Then, a strong low pressure system is forecast to drag a sharp cold front through Montana on Wednesday night or Thursday morning. Much colder temperatures are expected behind the front which may persist into next weekend. However, there is considerably uncertainty with regard to how cold it will get. Some models show temperatures as cold as we saw with the last arctic outbreak but others are not as cold. Widespread accumulating snowfall is also possible as the front pushes into the area. Confidence: There is low confidence in the intensity and duration of the cold air outbreak, and in snowfall amounts. Potential Impacts: If the colder model solutions are correct, there would be the potential for near record low temperatures with lows in the -20 F to -30 F range or colder. High temperatures may stay near or below zero for several days. However, early indications are that this cold air outbreak will not last as long as the cold air outbreak during the first week of December. These extremely cold temperatures and associated wind chills may lead to: *Frostbite in less than 10 minutes *Sporadic power outages *Newly formed ice jams on area rivers *Stress on livestock To prepare for extremely cold temperatures make sure to: *Keep a winter weather survival kit in your vehicle *Avoid outdoor activities *If you must be outside, make sure to bundle up and keep all your extremities covered to prevent frostbite and hypothermia *Ensure pets and animals are cared for IF YOU HAVE QUESTIONS OR CONCERNS...DO NOT HESITATE TO CALL OR CHAT US.
|National Weather Service
Last Modified: August 31, 2005