It appears to be directly across the R3 tracks from the Apple Lofts building. Huge blaze. probably 4 alarm. When I walked up 52nd it looks like they were getting ready to shoot water across the tracks from the Apple Lofts parking lot, assuming because the fire is so out of controll they are not putting it out from the 5200 block of Pentridge side. Appears to be about 5 row houses on the 5200 block of Pentridge on fire, possibly some of the industrial lot with the cars off of 53rd where it gets all turny. i talked to somebody who specualted it was kids playing with fireworks that set off the blaze.
Here's Google maps view of the center of the fire.
I feared it was the Apple Lofts building, but all the better argument why modernizing, getting buildings like this up to fire code. Huge fire. I wold not be surprised if 5 or 6 families along the 5200 block of Pentridge are homeless as a result of this fire.