"Severe" solar storm could bring Northern Lights to U.S. this weekend AxiosNorthern lights forecast says auroras possible above US this weekend USA TODAY'2,00,000 km long': Massive sunspot threatens Earth with huge solar eruptions Business TodayNOAA Alert: First "Severe Geomagnetic Storm Watch" since 2005 Earth.comAn aurora may shimmer across Louisiana night sky as space forecasters issue rare solar warning NOLA.com