Boom over the Tri-Cities - Jul 4, 2026, 1:38 PM

Saturday, July 4, 2026 at 1:38 PM · 1 hour ago

1 report1 contributor1 gave a direction

Reports (numbered)Direction it came fromEarthquake (USGS)

🎆This event is during the 4th of July window, when fireworks set off booms all over the area. Some of these reports - and the estimated origin - may be fireworks rather than one source.

Origin not pinned yet

We need at least two reports that note which direction it came from (ideally from different spots) before we can triangulate an origin.

Add your direction →

What it lines up with

Automatic cross-references. Suggestive, not proof.

📍Nearest known sourcestrong

Richland Sub Station (substation) - about 0.7 km from the estimated origin.

🌤️Conditions

Conditions weren’t especially sound-carrying. (33°C, wind 11 km/h, 13% cloud)

🕒Timing

afternoon on a weekend.

🌕Moon

Waning gibbous (76% lit).

Heard the boom and lost power?

Transformer and substation faults set off both a boom and an outage. See who else nearby is out, and when it is coming back.

isthepowerout.com

What people reported

Each number matches a dot on the map above.

Heard a boom · intensity 3/5 · from the W🎆 Fireworks season

anon-5461 · Jul 4, 1:38 PM · 1 hour ago

What do you think it was?

Cast your vote. The data’s nearest match: substation - Richland Sub Station.

0 votes so far.

Discussion

Saw the same thing? Have a theory or evidence about what it was? Weigh in.