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Hi GailHere is the simple answer: Thundersnow is a thunderstorm that has snow reaching the surface instead of rain. Usually thunder and lightning are more commonly observed with warm season thunderstorms. I have experienced this many times.. It's interesting if you know the technical lingo that goes with it. For more info just Google "thundersnow"

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?