Skip to Content

Loud explosion in the Financial District draws crowds

First responders say it was a firework; no injuries were reported

3:45 PM PDT on July 20, 2026

Firefighters and police officers responded to an explosion near Sutter and Montgomery streets on Monday, July 20. Photo: Eddie Kim / Gazetteer SF

A giant, reverberating explosion rang out through the concrete of the Financial District on Monday at about 3:15 p.m., drawing fire trucks and police vehicles to the corner of Sutter and Montgomery Streets. The area was not closed down and crowds of office workers and curious lookie-loos stood by trading theories and taking photos.

The incident was, ultimately, a false alarm: Multiple first responders told Gazetteer SF that the cause of the explosion was a firework.

It’s unclear exactly where or how the firework ended up exploding near the intersection; firefighters and police officers on scene did not elaborate on any details. Bystanders speculated about the cause, and one man (who did not give his name) told Gazetteer that he had overheard first responders calling it a “prank.” 

First responders confirmed there were no injuries from the explosion. The fire trucks dispersed by about 3:35 p.m.

Thanks for reading! If you liked this article, share it with someone. That’s the best way for new readers to discover Gazetteer SF.

Stay in touch

Sign up for our free newsletter

More Stories

Bay Area artists commit to avoiding venues employing surveillance technology

Tune-Yards, Deerhoof, and others are among more than 300 artists who’ve signed a pledge organized by local digital rights activists

August 7, 2026

Outside Lands on $16 a plate

Just because your festival tickets cost as much as a new iPhone doesn’t mean your apps have to

August 7, 2026

How San Francisco gave ‘Rubberz’ its bounce

The rising indie label Empire and a tiny AI music startup helped Fenix Flexin become the summer’s biggest slop star

August 5, 2026

Fire season brings dangerous risks to wedding season

Northern California wedding venues and their guests hope for the perfect day while dealing with some very imperfect conditions

August 4, 2026