Snow is very deep on all the roofs. With the rain, the weight is increasing on roofs.
Metal roofs behave quite differently than shingles for a roof. Snow does not adhere well to metal and with a bit of warmth, a large avalanche of snow can completely clear snow from the roof. This is dangerous if a person is near this fall of ice and snow. Also, a deck attached to a building can be completely detached with the heavy weight.
Shingles tend to hold onto the snow and the snow and water can remain on the roof for a long time. Hopefully the roof strength holds until the snow starts to be removed with warmth and rain.
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