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A very small earthquake occurred on Thu Dec 18, 2025 at about 10:21:22 CST (Dec 18, 2025 16:21:22 UTC) 4.12 km west of Marston, MO. The magnitude was 1.1.

    Origin Time: 2025/12/18 16:21:22.8700
      Magnitude: 1.1
     Hypocenter: 36.53567 deg latitude -89.64567 deg longitude 
          Depth: 6.840 km
   Number Picks: 17
     Number Sta: 008
Closest Station: 2.00 km
            RMS: 0.08 sec
            Gap: 94.00 deg
            seh: 0.40 km
            sez: 0.65 km
        magtype: d
        Quality: 1.00
           evid: 60616311

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.