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Jul 5, 2019 · The July 5, 2019 magnitude 7.1 earthquake near eastern California’s Searles Valley resulted from shallow strike-slip faulting in the North America plate crust. The magnitude 7.1 event occurred about 34 hours after and about 7 miles northwest of a magnitude 6.4 foreshock on July 4, 2019 at 10:34 a.m. Pacific Time.
Dec 4, 2020 · About 34 hours later (at 8:19pm local time) and 11km (6.8 mi) NW of the M6.4 event, another larger earthquake occurred. This was an M7.1 on a fault orthogonal (rotated 90 degrees) to the strike of the M6.4 and was also a shallow strike-slip event. View the 2019 Ridgecrest, California Earthquake Sequence Geonarrative.
Dec 4, 2020 · The 2019 Ridgecrest, California, Earthquake Sequence. December 4, 2020. View Web Tool. This USGS geonarrative (Esri Story Map) summarizes the USGS response and findings after the M6.4 on July 4 and M7.1 on July 6, 2019 in Searles Valley, Southern California, and includes links to USGS research publications and data releases.
CHANCE OF AN EARTHQUAKE* in the next week until July 22, 2019. M3+ is >99% 23–52 such earthquakes may occur re-invigorated by larger aftershock. M5+ is 30% 0-3 such earthquakes may occur. M6+ is 4% Such an earthquake is possible, but with low probability. M7+ is <1% 1 in 300 chance. Such an earthquake is possible, but with low probability.
Jan 13, 2021 · In this study, the 2019 Ridgecrest, California, earthquake sequence is chosen to illustrate and compare several approaches to constrain the magnitudes of the largest expected aftershocks during the evolution of the sequence. The first approach uses the extreme value theory and the modeling of the earthquake rate based on the Omori-Utsu formula.
Jul 6, 2019 · This earthquake occurs approximately 34 hours after and 11 km northwest of a M 6.4 event in the same region, on July 4th, 2019, at 17:33 UTC. The July 4th event was preceded by a short series of small foreshocks (including a M4.0 earthquake 30 minutes prior), and was followed by a robust sequence of aftershocks, including almost 250 M 2.5 ...
Sep 30, 2019 · Nick van der Elst sits on offset caused by the July 2019 Ridgecrest earthquake. (Public domain.) Nicholas van der Elst has been a geophysicist with the USGS since 2015, where he works on earthquake physics and aftershock forecasting. When not in the office, he can be found enjoying the less destructive side of California geology through ...
