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M5.4 Earthquake
◍ 148 km SSE of Tateyama, Japan · · updated 8/21/2026, 2:09:12 PM
Severity score
63/100
Confidence
High
Why this matters
Aftershock sequence may follow a mainshock of this size.
Key stats
Magnitude
5.4
Depth
62 km
Severity over time
Timeline
- M5.4 recorded8/21/2026, 12:02:07 PM148 km SSE of Tateyama, Japan
Sources & attribution
ScientificUSGS Earthquake Hazardsupdated 8/21/2026, 2:09:12 PM
⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.