A rare weather phenomenon rumbled across several eastern and central U.S. states this weekend as Arctic air continues to bring heavy snow and freezing temperatures to millions of Americans.

(WLUK) -- Thundersnow, a rare and powerful winter weather event, could make an appearance in Northeast Wisconsin as Winter Storm Cooper approaches. This phenomenon forms similarly to a regular ...

But sometimes it’s a flash high above the surface that really steals the show. Vivid bouts of thundersnow are a rare but beautiful phenomenon that some folks are lucky to experience during the ...