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Data Event Response to the June 24, 2020 M 5.8 Earthquake 18km SSE of Lone Pine, CA

Written by Kathleen Hodgkinson, Dave Mencin, & Beth Bartel
Originally posted 24 June 2020
Last updated 24 June 2020

Event Summary

A magnitude 5.8 earthquake occurred at 17:40:49 UTC (10:40:49 local) on June 24, 2020, 18 km SSE of Lone Pine, California. For more information, see the USGS Earthquake Hazards Program event page.

The event occured within the Network of the Americas (NOTA) footprint. NOTA is a core component of the NSF Geodetic Facility for the Advancement of Geoscience (GAGE), operated by UNAVCO.

GAGE Response

NOTA GPS/GNSS Real Time Data Solutions
14 GPS/GNSS stations within ~100 km of the epicenter were operating in real-time during the event, i.e., they were continuously streaming high rate (1-sps / 1 Hz) data to UNAVCO (Figure 1). Typical latencies for real-time stations, the time lapse between and observation being recorded on the receiver and it arriving in Boulder are less than 1 second.

NOTA GPS/GNSS High-Rate Data for Post Processing
UNAVCO is downloading high-rate 1- and 5-sps (1 and 5 Hz) data from all NOTA GPS/GNSS stations within 115 km of the epicenter. These data are available in RINEX format from the UNAVCO high-rate data ftp site.

GAGE GPS/GNSS Displacement Estimates
The GAGE AC (MIT) inspects the NOTA GPS/GNSS daily positions for significant offsets when they have two to three days of post-event data. Offsets for this event have been posted to the UNAVCO Data Products event page in file cwu_200624_1741_eq55_coseis_rapid.evt.

NOTA Borehole Strainmeter Data
UNAVCO will produce a fully processed 1-sps borehole strainmeter (BSM) dataset for this event. This dataset can be downloaded from the UNAVCO borehole strainmeter event response page, or directly via the 20200624_LonePineCA folder, when it is ready. See Figures 2-6 for dynamic strain examples from this event. For an explaination of these plots, see our Geophysical Event Response Data Explainer: Dynamic Strain.

Note: Figures and findings are preliminary and subject to revision.

GAGE Data and Support

  • Please contact archive-gpsunavco.org for information on data availability.
  • To request access to these and other RT-GPS stations operated by UNAVCO please send an email request to rtgpsunavco.org.
  • For information on past event responses, see the UNAVCO Geophysical Event Response page.


These data are provided by the GAGE Facility, operated by UNAVCO, Inc., with support from the National Science Foundation and the National Aeronautics and Space Administration under NSF Cooperative Agreement EAR-1724794. The Network of the Americas (NOTA) is a core component of the NSF GAGE Facility. To acknowledge use of these data please follow the acknowledgment guidelines.

High-resolution Figures

Related Links

Map Center:
Lone Pine, California


Last modified: 2020-06-29  18:37:40  America/Denver