Category Archives: Earthquake

California, Disaster, District 8, Earthquake, Fault, Geology, Highways, Inyo County, Ridgecrest, Roads, San Bernardino County, SR-178, Trona, Updates

Ridgecrest – Part 2 Now Online

Part 2 of my Ridgecrest earthquake field trip is now online. This time, I also won’t forget to add a link!

Ridgecrest Earthquakes of July 4-5, 2019 – Part 2
California, Disaster, District 8, Earthquake, Event, Geology, Highways, Ridgecrest, Roads, San Bernardino County, Southern California, SR-178

Ridgecrest – Part 1

Finally posting the photos from my August 22, 2019 Ridgecrest trip. Part 1, which covers the fault rupture, is finally up. Part 2, which will cover the problems in Poison Canyon and Trona, are coming soon!

Ridgecrest Earthquakes of July 4-5, 2019 – Part 1
Earthquake, Fault, Geology

Seismographs Online

Link

The California Integrated Seismic Network has an online feed showing seismographs throughout southern California.

http://www.scsn.org/index.php/earthquakes/live-seismogram-feed/index.html

District 6, District 8, District 9, Earthquake, Geology, Highways, Inyo County, Kern County, San Bernardino County, Searles Lake, SR-178, USGS

Earthquake UPDATES – Mw 7.1 near Ridgecrest

Well, that was strong! I felt it here in San Diego. First time I felt my building sway and it shook for a while. USGS is now reporting the quake as a Mw 7.1, which is 11 times larger than the one yesterday. This, assuming a larger one doesn’t happen, has also been deemed the “main shock” and the 6.4 was the “fore shock”. USGS and Caltech are a bit slow right now. If you felt this one, please let USGS know once their servers are not slow or not working. They need your help!

From Caltrans and CHP, damage reports are coming in of rockfalls on 178 in Poison Canyon, a sinkhole on 178 near the Trona Pinnacles turnoff, and buckling up to 4 feet as well as large cracks in other areas. Do not drive fast through any of the earthquake affected areas. Also be aware that rockfalls will be likely in all the local mountain ranges, so be careful. State 127 near Ibex Pass is covered with rocks, and that is a fair distance away from the epicenter.

http://scedc.caltech.edu/recent/
Working map of all earthquakes in California and Nevada by Caltech. Links to USGS as well on the page.

USGS site now working!
https://earthquake.usgs.gov/earthquakes/eventpage/ci38457511/executive

Earthquake, Geology, Kern County, Ridgecrest, San Bernardino County, Searles Lake, Southern California

M 6.4 near Searles Lake, CA

Seismic activity map of the Ridgecrest / Searles Lake area as of 12:40 pm July 4, 2019.

At 10:33 am this morning, July 4, 2019, there was a Mw 6.4 earthquake centered a few miles northeast of Ridgecrest, California. The focus of the earthquake was mid-range in depth, about 10.7 km deep. So far, there have been numerous aftershocks ranging up to M 4.7 in size at the time of this writing. The earthquake is the largest to strike southern California in some time. The area to the northwest of the epicenter has been subject to earthquake swarms in the past as well, though usually only up to the M 5.0 range in size.

Shakemap from this morning’s earthquake

https://earthquake.usgs.gov/earthquakes/eventpage/ci38443183/executive
USGS summary of the earthquake

Due to the size of the earthquake, I would expect there to be a fair amount of damage to buildings in the Searles Lake, Trona, Pioneer Point, Ridgecrest, and Inyokern areas. If you live in any of these areas, let the USGS know about what happened. Your information is greatly appreciated and will help them better understand the effects of earthquakes.

https://earthquake.usgs.gov/earthquakes/eventpage/ci38443183/dyfi/intensity
Did you feel it? Report it to the USGS here!