A "wintry mix" of snow and rain through Friday morning produced slick conditions for trick-or-treaters in Alaska's largest city. It was a record setting snow fall for the day.

The Yukon capital was already buried under a thick blanket of autumn snow at the start of the week. Then residents woke to another big dump on Wednesday.

In this case, the weather models were showing a strong push of cold air coming out of the Yukon, a push of warm air coming up from the south and a low spinning up from the Gulf of Alaska.