Mysterious explosion

[buildup]

Did anyone see or hear a loud explosion at 12:55am Wed, August 26th? It seemed to originate near the MacDonald Block which is 3-4 blocks from where I live. Very, very load explosion and the sky was light up brightly. I did not hear sirens, and saw no damage in the morning. The only thing amiss was emergency lighting was activated in the MacDonald Block (specifically the older building and tower on University) and was flashing for hours afterwards.

I'm wondering whether a transformer blew?

 

[dt_toronto_geek]

I practically live on my balcony at night during the summer but I missed that. I'm 3 blocks away too (about 1/2 mile)

 

[gristle]

Wasn't me.