[HokieMom]

#toronto news : Toronto police investigate loud blasts, smoke pouring onto downtown street

[deport]

Could be any number of things designed to serve the area such as utilities, etc.

[Innovative]

More at:

Black smoke pouring from beneath Scotia Plaza in heart of Toronto’s business district

http://www.cbc.ca/news/canada/toronto/black-smoke-pouring-from-beneath-scotia-plaza-in-heart-of-toronto-s-business-district-1.4094416

[PGR88]

Swamp gas, ignited a weather balloon.

[JimSEA]

Transformers do that from time to time. As long as nobody was close I pray.

[nuconvert]

“Explosion at King and Bay streets caused by hydro vault fire, Toronto fire chief says” (twitter)

whatever that means

[R_Kangel]

...... Environment Canada issued a warning earlier this month about a large increase in incidents of exploding beavers. Maybe they have begun migrating to the cities?

[McGavin999]

Here’s praying nobody was hurt.

[Gay State Conservative]

Doesn't Toronto have some kind of underground transit/shopping complex in the downtown area? If so,is it that area that's affected?

[soycd]

Transforming Fe and Cu into FeCu and smoke.