Boom over the Tri-Cities - Jun 20, 2026, 9:20 PM
Saturday, June 20, 2026 at 10:28 PM · 2 months ago
The red marker is our best guess at the source; the blue dots are where people were. Estimated from how strong it felt across the area - loudest closest to the source. There aren't enough direction arrows yet, so this leans on the loudness pattern alone. A few people reporting which way it came from would sharpen it a lot.
What it lines up with
Automatic cross-references. Suggestive, not proof.
Richland Sub Station (substation) - about 0.9 km from the estimated origin.
A USGS M1.21 earthquake 73 km away, 35h apart.
Conditions weren’t especially sound-carrying. (23°C, wind 8 km/h, 0% cloud)
night on a weekend.
First quarter (35% lit).
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.comWhat people reported
Each number matches a dot on the map above.
What do you think it was?
Cast your vote. The data’s nearest match: substation - Richland Sub Station.
Discussion
Saw the same thing? Have a theory or evidence about what it was? Weigh in.