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M6.3 Earthquake

◍ 84 km SSW of Nikolski, Alaska · · updated 9/4/2026, 5:27:34 AM
Severity score
79/100
Confidence
High
Why this matters

Aftershock sequence may follow a mainshock of this size.

Key stats
Magnitude
6.3
Depth
35 km
Severity over time
Timeline
  1. M6.3 recorded
    9/3/2026, 11:17:24 AM
    84 km SSW of Nikolski, Alaska
Sources & attribution
ScientificUSGS Earthquake Hazardsupdated 9/4/2026, 5:27:34 AM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 10:30:41 PM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 9:47:53 PM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 5:29:18 PM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 5:29:55 PM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 1:25:57 PM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 1:44:02 PM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 12:25:35 PM
ScientificUSGS Earthquake Hazardsupdated 9/3/2026, 12:24:16 PM
⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.