Severe Snowstorm 'Snow Cannon' Triggers Major Traffic Chaos on Norrland Coast

A severe snowstorm dubbed the "snow cannon" has caused widespread traffic disruptions and service suspensions along the Norrland coast, particularly impacting the E4 highway near Skellefteå. The storm brought up to one meter of snow, exceeding forecasts and leading to significant challenges across transportation and municipal services.

Starting Thursday evening, a red snow warning was issued covering areas from Skellefteå northwards to the county border, lasting until late Friday night. This warning, combined with an orange warning for surrounding regions, prompted authorities such as Trafikverket, Police, and SMHI to advise residents to avoid unnecessary travel. Heavy snowfall and poor visibility left approximately 100 vehicles stranded on the E4 between Bjästa and Docksta near Sundsvall, with numerous trucks stuck particularly near Skuleberget in Ångermanland. One driver reported being stuck on the E4 in Skulnäs since 9:30 PM Thursday.

In response, Skellefteå municipality closed all non-essential services including sports halls, suspended bus traffic until Saturday, and transitioned schools for grades 5-9 to remote learning for Friday. Air travel also suffered, as a SAS flight from Stockholm Arlanda to Skellefteå turned back after circling the airport due to the adverse weather.

The "snow cannon" effect occurs when cold air moves over relatively warm open water, creating intense snow clouds. Meteorologist Emma Härenstam described the situation as very serious and unusual, highlighting that such red snow warnings are rare in November, having occurred only once or twice previously.

Despite the extensive disruptions, traffic calmed somewhat by Friday night in Skellefteå. Recovery efforts continued on the highway, with authorities prioritizing snow removal and clearing critical routes to resume safe travel as conditions improve.