A very small earthquake occurred on Wed Aug 20, 2025 at about 04:18:17 CDT (Aug 20, 2025 09:18:17 UTC) 4.84 km east of Marston, MO. The magnitude was 1.5.

    Origin Time: 2025/08/20 09:18:17.4200
      Magnitude: 1.5
     Hypocenter: 36.50800 deg latitude -89.55300 deg longitude 
          Depth: 8.400 km
   Number Picks: 35
     Number Sta: 016
Closest Station: 4.00 km
            RMS: 0.10 sec
            Gap: 57.00 deg
            seh: 0.31 km
            sez: 0.60 km
        magtype: d
        Quality: 1.00
           evid: 60613156

For more information about this earthquake, see the entry in the ANSS Comprehensive Catalog.

This is a preliminary location and magnitude determined by CERI using data provided by the Advanced National Seismic System and cooperating partners. The magnitude and location may change slightly as more data become available.