[undercoverbrother]

The Halifax explosion happened, if i remember my junior high schooling, it is the largest man made explosion other than the two bombs dropped on Japan in WW2.

https://en.wikipedia.org/wiki/Halifax_Explosion

Over 1,600 people were killed instantly and 9,000 were injured, more than 300 of whom later died.[23] Every building within a 2.6-kilometre (1.6 mi) radius, over 12,000 in total, was destroyed or badly damaged.[59] Hundreds of people who had been watching the fire from their homes were blinded when the blast wave shattered the windows in front of them.[64] Stoves and lamps overturned by the force of the blast sparked fires throughout Halifax,[65] particularly in the North End, where entire city blocks were caught up in the inferno, trapping residents inside their houses. Firefighter Billy Wells, who was thrown away from the explosion and had his clothes torn from his body, described the devastation survivors faced: "The sight was awful, with people hanging out of windows dead. Some with their heads missing, and some thrown onto the overhead telegraph wires." He was the only member of the eight-man crew of the fire engine "Patricia" to survive.[66]

An estimated c$35 million in damages resulted ($562 million today).

I also seem to recall that a day or two after the explosion a large storm and cold temperatures arrived in the area.