Tracy: Massive Medical Supply Warehouse Engulfed By Fire Thursday Afternoon

A massive fire at a Tracy warehouse complex was burning out of control Thursday afternoon and sending a huge plume of black smoke into the air.

The fire broke out at a little before 1 p.m. at the Medline Distribution Center, a medical supply warehouse in the 5700 block of Promontory Parkway just south of Interstate Highway 205 and west of the downtown area, according to Tracy Police Department spokesperson Kaylin Heefner.

So far no injuries have been reported but the roughly 1 million square foot warehouse is fully engulfed in flames, according to the South San Joaquin County Fire Authority.

Heefner said the fire wasn't threatening the nearest residential area, Tracy Hills, a few miles to the south, but the smoke plume is visible for miles. ---More...

That's a hell of a situation unfolding in Tracy. A million-square-foot medical supply warehouse going up is no small thing — especially with the sprinkler system failing and hydrant pressure being garbage. Those two details are the kind of thing that turns a bad fire into a… pic.twitter.com/1e4GmkBLWm

— Tony Seruga (@TonySeruga)June 11, 2026

That's a hell of a situation unfolding in Tracy. A million-square-foot medical supply warehouse going up is no small thing — especially with the sprinkler system failing and hydrant pressure being garbage. Those two details are the kind of thing that turns a bad fire into a catastrophic one.

A few things worth flagging:

The sprinkler/hydrant failure is the real story here. A building that size in an industrial park should have a fully operational fire suppression system. The fact that it wasn't working on entry, combined with poor hydrant pressure, suggests either maintenance negligence, system design flaws, or infrastructure issues with Tracy's water grid in that zone. Fire chiefs don't casually mention that stuff to the press — it's a pointed comment.