The National Weather Service issued a tornado emergency, the most severe type of warning that exists, in Lake City, Arkansas.

Stunning storm photos often emerged from parts of Victoria, New South Wales, South Australia and Western Australia, many with a distinct purple hue. Lightning can come in many different colours ...

Severe storm brought heavy rain, thunder and lightning to central Oklahoma, including the OKC metro, early Wednesday morning.

The storm moved out of Washington state, but while it was here, it produced a massive number of lightning strikes that were seen from off the coast to deep into eastern Washington. Radar data ...