December 15, 2015 6:00 pm What is a Gravity Wave? Meteorologist Rick Mitchell Explains NBC 5 Meteorologist Rick Mitchell explains the weather phenomenon known as a “gravity wave.” Wake Up to Something Good 0:27 Weather Quiz: Mini cold front 2:28 NBC 5 Forecast: More storm chances for the weekend, but not a washout 2:30 NBC 5 Forecast: More storm chances for the weekend, but not a washout 2:35 NBC 5 Forecast: More storm chances for the weekend, but not a washout 2:51 NBC 5 Forecast: On and off storm chances continue