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Boom over the Tri-Cities - Jun 20, 2026, 11:30 AM
Saturday, June 20, 2026 at 11:30 AM · 23 hours ago
1 report1 contributor1 gave a direction
Reports (numbered)Direction it came fromEarthquake (USGS)
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
BNSF Pasco Rail Yard (rail) - about 4.1 km from the estimated origin.
🌤️Conditions
Conditions weren’t especially sound-carrying. (27°C, wind 19 km/h, 3% cloud)
🕒Timing
morning on a weekend.
🌕Moon
Waxing crescent (31% lit).
What people reported
Each number matches a dot on the map above.
1
Heard a boom · intensity 2/5 · from the NW
Jun 20, 11:30 AM · 23 hours ago
What do you think it was?
Cast your vote. The data’s nearest match: rail - BNSF Pasco Rail Yard.
0 votes so far.
Discussion
Saw the same thing? Have a theory or evidence about what it was? Weigh in.
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