1.8

M1.8 Earthquake 7 km WSW of Marked Tree, Arkansas — July 18, 2026

2026-07-18 08:38:15 UTC (2026-07-18) · approx. 2:38 AM UTC-6 local

MagnitudeM1.8(md)
Time08:38 UTC≈ 2:38 AM UTC-6
Depth5.1 kmshallow crustal
Coordinates35.503°, -90.493°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 35.50°, -90.49°

Earthquake Details

Magnitude
1.8 md
Depth
5.1 km
shallow crustal
Location
35.5028°N
-90.4935°E

Technical Information

Event ID
nm60625351
Event Type
earthquake
Status
✓ Reviewed
Significance
50
Stations Used
19
Azimuthal Gap
47.0°
Min Station Distance
0.048°
RMS Residual
0.45 sec
Last Updated
2026-07-18 13:35:27 UTC

Actions

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Location

Arkansas
View all Arkansas earthquakes

Understanding This Data

Magnitude 1.8 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nm60625351). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, July 18, 2026). M1.8 Earthquake 7 km WSW of Marked Tree, Arkansas — July 18, 2026. Retrieved July 18, 2026 from https://www.earthquaketracker.org/earthquakes/event/nm60625351/