Strong solar storm could trigger northern lights in United States The Washington PostGargantuan sunspot 15-Earths wide erupts with another colossal X-class solar flare (video) Space.comGiant sunspot could bring northern lights to Massachusetts CBS BostonNorthern lights forecast says auroras possible above US this weekend USA TODAYAll of Michigan could see Northern Lights on Friday night: What to know WDIV ClickOnDetroit