Alaska's record-breaking snow is reaching dangerous levels

Alaska has a lot of experience with snow, but this winter is going to be a bit much.

In Anchorage, where more than a foot has fallen so far, city officials have warned the owners of more than a thousand commercial properties that their roofs may collapse. Some buildings have already been damagedwhile crews have been sent around the city to clean the roofs of others.

Homeowners have climbed on top of their own homes and used shovels to clear piles of snow.

Since winter is far from over, Anchorage is poised to break the snow record of 50 inches (134.5 centimeters). Temperatures in recent days have also reached their lowest point of the season, adding to the excitement. Utility officials asked residents to conserve natural gas and electricity.

In the state capital, Juneau, snowfall totals reached a record for the month of January, with more inches piling up this weekend. Not only buildings are at risk, but also boats in the city's harbors have sunk under the weight of the snow.

Dozens of people living out there died in Anchorage last year, and officials worry more could succumb this winter. Amid subzero temperatures, the city has issued an emergency declaration and set up warming shelters, and the mayor has urged residents to donate winter gear and blankets.

Temperatures are expected to rise in Anchorage next week, but more snow could fall.