4.0

M4.0 Earthquake near off the coast of OregonApril 7, 2026

2026-04-07 20:49:25 UTC (2026-04-07) · approx. 11:49 AM UTC-9 local

MagnitudeM4.0(mb)
Time20:49 UTC11:49 AM UTC-9
Depth10.0 kmshallow crustal
Coordinates44.640°, -129.333°
Felt by6DYFI responses
Status✓ Reviewed by USGS

On April 7, 2026 at 20:49 UTC, a magnitude 4.0 shallow crustal earthquake struck near off the coast of Oregon, at a depth of 10.0 km and coordinates 44.6398°, -129.3326°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 44.64°, -129.33°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 6 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.0 earthquake near off the coast of Oregon

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.0 mb
Depth
10.0 km
shallow crustal
Location
44.6398°N
-129.3326°E
Felt Reports
6
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
us7000sb7l
Event Type
earthquake
Status
✓ Reviewed
Significance
247
Stations Used
59
Azimuthal Gap
186.0°
Min Station Distance
3.902°
RMS Residual
1.12 sec
Last Updated
2026-05-12 20:59:29 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near off the coast of Oregon?

The magnitude 4.0 earthquake that struck near off the coast of Oregon on April 7, 2026 at 20:49 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: us7000sb7l). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 7, 2026). M4.0 Earthquake near off the coast of OregonApril 7, 2026. Retrieved May 17, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000sb7l/