Lightning that hit a transmission tower arm near Heffley Creek knocked out power to 10,000 residents and closed schools in the North Thompson on Monday morning.
The blacked-out strip stretched roughly 300 kllometres from just north of Kamloops to Valemount.
Power was down for almost six hours, but a B.C. Hydro crew managed to repair the damage sooner than expected and service resumed by 9:15 a.m. Initially, it was expected to take until noon.
In the meantime, School District 73 notified parents that school would probably be cancelled for the entire day. Students in Sun Peaks, Clearwater and Barriere were told to stay home, at least for the morning.
Rayleigh elementary managed to remain open, operating briefly without power.
When power resumed earlier than predicted, the district called parents again to notify them classes would resume at noon.
"Certainly some students did not make it to school because of the buses, but I suspect many have," said superintendent Terry Sullivan.
The lightning strike was part of a barrage of stormy weather that swept across the southern half of the province early Monday. The storm blew transformers and other equipment in 70 locations and cut power to 17,000 homes in total.
Two people in the Lower Mainland who narrowly missed direct lightning strikes were taken to hospital and later released.