Precautions in the cold 2:07
Precautions in the cold 2:07
If you can, stay in bed. Hamilton's cold, cold Friday begins with a temperature of -21C at 7:00 a.m. and a wind chill dropping to -32C.
That's more than cold enough to make sure exposed skin freezes in just a few minutes.
It will warm up by the afternoon to a high of minus 14C. with the wind coming in from the southwest at about 20 km/h late this evening. Temperature are expected to rise to -7C by morning with a high of -2C and a 60 percent chance of
flurries late in the evening.
The cold alert issued by the city's medical officer of health on Dec. 30 remains in effect. Environment Canada issued a wind chill warning Thursday that remains in effect today. A snowfall warning issued Thursday was called off around 10 p.m. last night.
As overnight temperatures in Toronto dipped to –20 C, many people again reported hearing loud booms, which CBC meteorologist Jay Scotland says was likely the result of a "frost quake."
Scotland said what they likely heard was the result of a weather phenomenon known as an "ice quake" or "ice boom."
The boom is caused when water in the ground expands in extreme cold
"All of a sudden that ice starts to expand — it's like having a lid on top of a bottle, that pressure builds and builds until finally something gives, the ice expands, the pressure is released, the ground cracks and we hear what sounds or even feels like a very localized earthquake," said Scotland.
"This is not an earthquake. It's ice expanding under the ground, and it leads to a loud boom and gets folks pretty scared when it happens in the middle of the night. Very rare, very cool but very scary."
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Wind chill hits -32 C early Friday morning in Hamilton
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