Thundersnow – a thunderstorm that produces snow instead of rain – is sometimes reported during winter storms in the U.S.

In a typical summertime thunderstorm, warm, moist air rises rapidly into the atmosphere, where it hardens into ice crystals, ...

"Thundersnow can be found where there is relatively strong instability and abundant moisture above the surface," says the NSSL.

"Thundersnow" is rare, but could happen during heavy snow. Here's what it means.

An updated severe thunderstorm warning was issued by the National Weather Service on Sunday at 1:13 p.m. in effect until 1:45 p.m. for Coffee, Dale, Geneva and Houston counties.