From Josh Boyajian:

Here are my pictures from last night!
large nighttime fire in CHicago

Tower Ladder 5 was in a spare apparatus last night. They were at the corner of Sectors 1 and 4. Josh Boyajian photo

big fire at night in Chicago

Sector 1 fully involved. Josh Boyajian photo

firefighter putting water onto huge fire

A deck gun in use from Engine 49. Josh Boyajian photo

firefighters work at nighttime fire

A view looking at Sector 1 from the Ashland Avenue Frontage Road. Josh Boyajian photo

master streams at fire

A multi-versal works by Engines 49 and 8, both of which are operating deck guns. Josh Boyajian photo

Chicago fire engine at large fire

Engine 29 from deploys a deck gun at 36th Street and the west frontage road of Avenue. Josh Boyajian photo

huge building on fire in Chicago

A view from underneath the Ashland Avenue bridge looking down 38th Street after a portion of the fire building collapsed. Josh Boyajian photo

From Jeff Rudolph:

Some pics from last night, Jeff R
large warehouse fire in Chicago

Huge fire seen in Sector 3 well after the interior collapsed. Jeff Rudolph photo

firefighter covered with ice

A firefighter from Engine 8 coated with ice. Jeff Rudolph photo

firefighting Snorkel silhouette

Squad 1A with a master stream in Sector 3. Jeff Rudolph photo

large warehouse fire in Chicago

Truck 33 with an elevated master stream in Sector 3. Jeff Rudolph photo

black and white photo of fire engine covered with ice

Engine 8 icing up in Sector 1. Jeff Rudolph photo

large fire scene silhouetted firefighters

Firefighters on Truck 33 in the rear. Jeff Rudolph photo

 

ABC Chicago has an article HERE.

A Chicago Fire Department spokesman said a southside warehouse that caught fire Tuesday night will be a total loss.

“Totally involved. … This is a major fire,” read a message posted to Twitter at about 9:50 p.m. Moments later there was a message that a portion of the structure had collapsed.

Firefighters were in “defensive mode” in attacking the fire in a building on the 3700 block of South Ashland Avenue, spokesman Larry Langford said.

But despite his initial, confident remark that the fire would be isolated, flames spread to at least one nearby building. The owner of a printing company, at 3801 S. Ashland Ave., was on the scene and expressed concerns about chemicals inside that could explode.