If you felt the ground shake over the past few bitterly cold days you are not alone. Several frost quakes in and around the Greater Toronto Area have been waking people up since Wednesday night.
On NewsTalk1010's Moore in the Morning, Cathy Woodgold, a seismologist with Natural Resources Canada says that when water in the ground freezes, it expands and it has to get the extra room from somewhere.
“A sudden drop in temperature builds up tremendous stress because there’s just no room for all of that ice and something will suddenly crack and that is a frost quake.”said Woodgold.
Woodgold says if you are close to a frost quake it can feel like an earthquake but it’s different in that it's at the surface.
“Like a small earthquake it can give your house a little bit of a shake and if you are very close to it, it might cause something to fall off of the shelf or that kind of thing. It wouldn’t be a big earthquake.”
Frost quakes can cause loud booming noises. Similar noises were heard in the Toronto area on Christmas Eve and on December 30th.