USGS
Magnitude 5.5 earthquake — Pacific-Antarctic Ridge
A magnitude 5.5 earthquake occurred near Pacific-Antarctic Ridge on 2026-07-20 05:38 UTC at a depth of about 10 km, according to the U.S. Geological Survey.
Updated 2026-07-22 15:18 UTC
- Magnitude: M 5.5
- Location: Pacific-Antarctic Ridge
- Time (UTC): 2026-07-20 05:38 UTC
- Depth: 10 km
- Coordinates: -57.27, -141.76
- PAGER alert: GREEN
- Tsunami: No tsunami warning flagged
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Frequently asked questions
How strong was the Pacific-Antarctic Ridge earthquake?
It measured magnitude 5.5 on the USGS scale. Shaking felt locally also depends on depth and distance.
Was there a tsunami?
No tsunami warning was flagged by USGS. Always follow official local guidance.
How can I get alerts for future earthquakes here?
Install the free SeismoWatch Android app, draw a box over the area, set a minimum magnitude, and turn alerts on.