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M4.5 Earthquake
◍ 85 km N of Saipan, Northern Mariana Islands · · updated 8/21/2026, 1:49:08 AM
Severity score
47/100
Confidence
High
Why this matters
Aftershock sequence may follow a mainshock of this size.
Key stats
Magnitude
4.5
Depth
214 km
Severity over time
Timeline
- M4.5 recorded8/20/2026, 9:57:40 PM85 km N of Saipan, Northern Mariana Islands
Sources & attribution
ScientificUSGS Earthquake Hazardsupdated 8/21/2026, 1:49:08 AM
⚠This is an informational severity score, not an official warning. Follow guidance from NWS/NOAA, FEMA (ready.gov), and local emergency management.