A very small earthquake occurred on Mon May 22, 2023 at about 00:25:17 CDT (May 22, 2023 05:25:17 UTC) 4.22 km north of Black Rock, AR. The magnitude was 1.8.

    Origin Time: 2023/05/22 05:25:17.8800
      Magnitude: 1.8
     Hypocenter: 36.14367 deg latitude -91.09917 deg longitude 
          Depth: 9.690 km
   Number Picks: 9
     Number Sta: 005
Closest Station: 10.00 km
            RMS: 0.11 sec
            Gap: 292.00 deg
            seh: 0.91 km
            sez: 0.63 km
        magtype: d
        Quality: 1.00
           evid: 60500733

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.