Add Yahoo as a preferred source to see more of our stories on Google. GRAND RAPIDS, Mich. (WOOD) — Thundersnow is possible, but it is pretty rare. The reason has to do with the conditions needed for ...

PORTLAND (WGME) -- With summer approaching, the threat of thunderstorms is becoming more likely. But how lightning actually forms is quite amazing. It starts with differences in charged electrons.

Inside a thunderstorm, warm air is forced upward in a strong updraft. As the air rises, ice and water particles collide inside the cloud, creating electrical charges. Those collisions build up ...