The second major snowstorm to slam New Jersey in a week is producing reports of "thundersnow."

Meteorologists and residents around the state are reporting flashes of lightning and booming thunder. Experts say the unusual phenomenon is caused by shallow layers of rising, unstable air.

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News 12 New Jersey Meteorologist James Gregorio said that he hasn’t seen this much “thundersnow” in the state in his 20 years of forecasting the weather in New Jersey.

Former National Weather Service meteorologist Gary Szatkowski also said that this was the most active “thundersnow” event he has experienced. He said that he heard thunder at least eight times Wednesday.

A Manchester Middle School teacher was hospitalized Wednesday after she was struck by lightning while working school bus duty. She is expected to be OK.

Lightning may also be to blame for a fire at a business complex in Lakewood.

Wednesday’s nor’easter produced a large amount of snow, approaching nearly 2 feet in some areas of New Jersey.