Thanks for that link.
I'll keep an eye on the temps, good call. In fact, something weird has already happened.
Local weather predicted it would be about -4oC by early morning, gradually falling from the predicted current temperature of 1oC. But the actual measured temperature was showing -5oC. Normally they're not that far off with their predictions, especially when "predicting" the current temperature, and the temperature over the next hour. They were expecting 1, but it was really -5?
I stuck my head out the back door, and I don't hear any dripping, so it's below zero. Not sure it's quite -5. Anyway, interesting. Not sure what's up.