Frozen pipes torch more than a few buildings in the NE. That heater would work fine, then your buddy asks you to go get a beer, the heater slides down against a cardboard box, and well, Bobs your uncle.
Weather is all perspective. We each have our own. For instance:
The snow along my driveway is piled so high, I don't think we can 'store' anymore.
While this photo may make you cold, it makes me sweat(I shoveled that driveway-3 time in a week, by hand).