Boom over the Tri-Cities - Jul 2, 2026, 11:55 PM

Friday, July 3, 2026 at 12:26 AM · 2 hours ago

2 reports2 contributors2 gave a direction

Reports (numbered)Direction it came fromEstimated origin (source)Earthquake (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.

Estimated origin - interesting, not definitive

The red marker is our best guess at the source; the blue dots are where people were. Triangulated from the 2 directions people drew - each arrow is a line pointing back toward the source, and the marker is where those lines cross. It sharpens as more people report which way it came from, and as we get loudness and exact-timing reports.

Confidence:22% · Lowcompass bearings

What it lines up with

Automatic cross-references. Suggestive, not proof.

📍Nearest known source

Columbia Generating Station (powerplant) - about 6.2 km from the estimated origin.

🌤️Conditions

Conditions weren’t especially sound-carrying. (19°C, wind 3 km/h, 0% cloud)

🕒Timing

overnight on a weekend.

🌕Moon

Waning gibbous (88% 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 2/5 · from the N🎆 Fireworks season

anon-5461 · Jul 3, 12:26 AM · 2 hours ago

Heard a boom · intensity 1/5 · from the N🎆 Fireworks season

anon-3544 · Jul 2, 11:55 PM · 3 hours ago

What do you think it was?

Cast your vote. The data’s nearest match: powerplant - Columbia Generating Station.

0 votes so far.

Discussion

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