@kurtern84 @cowboysdude
Ty the problem was the position, my new functional code:

{
                        module: 'MMM-NOAA3',
                        position: "top_right",
                        config: {
                                provider: "Yahoo",
                                airKey: "T624yBx9xxxxxxxxx",
                           css: "NOAA3",   // THIS MUST CONTAIN A CSS STYLE NAME
                                updateInterval: 15 * 60 * 1000 // every 15 minutes or whatever you choose but make sure you have an api that will allow that many calls per day!!!
                                }
},