Heavy snow occurs in Yerusalayim once every few years. What may be different now is more people have central heating (without central heat people were used to dressing warmly indoors during winter, and using keroscene space heaters, meaning they weren’t affect by power loss).
If you attribute bad weather to Ha-Shem objecting to some policy, then do you attribute good weather to good policies? That is a problem if you object to the government since Yerusalayim usually has good weather.
If you believe in global warming with the religiousity of many of the left, the snow is a shock, but if you are so foolish to confuse normal weather variance with climate change, you are easy to shock,