heart attack snow
n.— «With temperatures within striking distance of freezing during much of this precipitation event, the snow which falls is to be heavy and fairly wet—what’s often referred to as “good packing” or “heart attack” snow. The weight of such snow means it must be shoveled with extreme care to avoid a heart attack.» —“Major winter storm on the way” by Tom Skilling WGN Weather Center Blog Feb. 5, 2008. (source: Double-Tongued Dictionary)
Further reading
A listener adds to our collection of slang used by RV enthusiasts. When she’s not in her sticks and bricks–that is, her brick-and-mortar home in Michigan–she’s driving around in her motor home chasing 70, which in the RV community means “trying to...
A newscaster covering treacherous driving conditions offered this advice: Keep it between the mustard and the mayo. In other words, “Make sure your car stays between the yellow line and the white line on the road.” This is part of a complete episode...
Storms like this I have also heard called, in New England, “Widowmakers”