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.

Swap out the rain, and replace it with snow, and you have what the National Oceanic and Atmospheric Administration (NOAA) describes as the “rare weather phenomenon” known as thundersnow.

PORTLAND, Ore. (KOIN) — A rare weather event known as “thundersnow” was documented in Astoria on Wednesday. According to the National Weather Service data, a bolt of lightning was recorded ...

And in Astoria, frosty conditions have brought about another unusual weather phenomenon: thundersnow. There was some thundersnow in Astoria today around 1 PM PST! This is not often seen in this ...

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 ...

PORTLAND, Ore. (KOIN) — Video has surfaced of the rare thundersnow weather picked up on National Weather Service radar in Astoria on Wednesday. The anomaly was captured on a local resident’s ...

Thundersnow is a relatively rare phenomenon in which a winter thunderstorm produces precipitation in the form of snow rather than rain, according to Fox Weather. The storm develops from ...

Residents should also be ready for sleet and wind gusts of 20-45 mph depending on the location, and "thundersnow" could even be in the forecast. In all, Lanza said whatever snowfall totals are ...