M 5.5 - The 1990 Upland, California Earthquake
- 1990-02-28 23:43:36 (UTC)
- 34.144°N 117.697°W
- 3.3 km depth
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VIImmi 
Estimated Intensity Map Origin - Review Status
- REVIEWED
- Magnitude
- 5.5 ml
- Depth
- 3.3 km
- Time
- 1990-02-28 23:43:36 UTC
Focal Mechanism Fault Plane Solution View Nearby Seismicity - Time Range
± Three Weeks - Search Radius
250.0 km - Magnitude Range
≥ 2.0
Contributors CI
California Integrated Seismic Network: Southern California Seismic Network (Caltech, USGS Pasadena, and Partners)