0 snow that falls at the same time as there is a storm with thunder and lightning (= flashes of bright light in the sky produced by electricity): --
Weather radar observations, as well as synoptic report, showed extensive thundersnow embedded within the blizzard; in the heaviest bands, accumulation rates exceeded 20 cm per hour.
However, it can also occur during dust storms, forest fires, tornadoes, volcanic eruptions, and even in the cold of winter, where the lightning is known as thundersnow.
During the storm thundersnow was reported.
The term thundersnow describes a thunderstorm which produces snow as the primary form of precipitation.
Thundersnow developed within heavy bands in some areas.
As a result, visibilities in thundersnow are frequently under 1/4 mile.
Thundersnow is one situation where forcing mechanisms provide support for very steep environmental lapse rates, which as mentioned before is an archetype for favored convection.
Winds of above tropical storm force are frequent with thundersnow.
