Recent Earthquakes in California and Nevada


== PRELIMINARY EVENT REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro quarry occurred at 1:45:59 PM (PDT) on Tuesday, May 19, 2026.
The magnitude 1.8 event (a probable quarry explosion) occurred 6 km (4 miles) ENE (74 degrees) of Bonadelle Ranchos-Madera Ranch, CA.
The hypocentral depth is -1 km (-0.50 miles).


Magnitude 1.8 - duration magnitude (Md)
Time Tuesday, May 19, 2026 at 1:45:59 PM (PDT)
Tuesday, May 19, 2026 at 20:45:59 (UTC)
Distance from Bonadelle Ranchos-Madera Ranch, CA - 6 km (4 miles) ENE (74 degrees)
Parksdale, CA - 20 km (13 miles) ENE (73 degrees)
Clovis, CA - 21 km (13 miles) NNW (335 degrees)
Yosemite Lakes, CA - 21 km (13 miles) S (188 degrees)
Madera, CA - 23 km (14 miles) E (79 degrees)
Coordinates 37 deg. 0.0 min. N (37.000N), 119 deg. 48.3 min. W (119.805W)
Depth -0.74 km (-0.50 miles)
Quality Poor
Location Quality Parameters Nst=10, Nph=10, Dmin=15.2 km, Rmss=0.09 sec, Erho=0.69 km, Erzz=31.61 km, Gp=186 degrees
Event ID# nc75365782
Additional Information Map

For more information, see https://earthquake.usgs.gov

[ Index map || Big earthquake list || All earthquake list || Glossary of terms || Top page ]
[ Did you feel it? || ShakeMaps || Relative2Me ]
[ Data Sources ]

Special maps
Long Valley || Los Angeles || San Francisco

Data Sources
US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)