A storm that started Sunday and largely tailed off by Monday afternoon had dropped nearly 17 inches on the city by evening to establish the new seasonal snowfall total, according to the National Weather Service. The storm closed schools in Anchorage and Mat-Su on Monday, and contributed to a fatal collision on the Parks Highway.

A commercial building's roof in South Anchorage collapsed due to heavy snow loads and potential design flaws in older wooden truss systems, prompting officials to advise building owners to clear roofs and assess structural safety.

The Spenard Builders Supply facility in Anchorage suffered a significant roof collapse due to heavy snow, causing no injuries but damaging the structure and nearby utilities.

This is the second reported roof collapse in Anchorage in two days.

The roof collapsed at a South Anchorage gym during a fitness competition. The Anchorage Office of Emergency Management cautioned residents that the city has had near-record snow conditions this winter, and residents should consider the snow load on their roofs. Officials also warned that property owners should exercise extreme caution if removing snow from their roofs themselves.

The incidents happened after another bout of heavy snow, and as municipal building officials mailed out warnings to owners that their buildings could be at risk.