The blackout hit critical infrastructure like airports and caused transportation disruptions across the two countries. The cause of the outage was unclear.

The first severe thunderstorm warning of the day in Minnesota has been issued, with the NWS Sioux Falls saying the warning is in effect in Beaver Creek in southwestern Minnesota, where 2-inch size ...

Airports, trains and internet and mobile coverage are among the services affected by the blackout - with traffic lights also ...