A heat wave is coming to Southern Utah this weekend, with temperatures expected to climb close to 115 degrees in St. George on Tuesday, the National Weather Service reported. Temperatures of this magnitude occur once or twice a year on average, the weather service said, adding that it will be significantly warmer than it has been so far this summer and that the high temperatures are occurring earlier than typical. The heat will impact much of the population, especially those who are heat sensiti... <iframe src="http://www.sltrib.com/csp/mediapool/sites/sltrib/pages/garss.csp" height="1" width="1" > </frame>