At 11:10am, on Thursday morning, a 4.1 magnitude earthquake hit 6 miles east southeast of Ocotillo, California. The earthquake occurred just north of the Mexican border, in the desert, and is possibly related either to the Yuha Wells Fault or the extreme northern edge of the Laguna Salada Fault. The earthquake appears to be an aftershock of the 7.2 Baja earthquake sequence.
Earlier in the morning, a 3.2 earthquake occurred near Anza and a 3.1 earthquake occurred near Salton City, California. These three earthquakes occurred within 10 hours of each other and, two months after the Baja quake, this is showing signs that seismic activity in the region is not going quiet just yet.
The 4.1 magnitude earthquake was felt as far north as Palm Springs, as far northwest as Irvine, as far west as San Diego, as far east as Mexicali, and south into Mexico.
The epicenter of the 4.1 quake is located in the desert where no major towns are immediately nearby. Due to the moderate magnitude and rural terrain, no damage or injuries are expected.
[Magnitudes and locations are subject to change as the USGS reviews the automated data.]
Showing posts with label palm springs. Show all posts
Showing posts with label palm springs. Show all posts
A quake with a preliminary magnitude 
of 4.2 struck the lower Southern California Desert Friday Night. The quake was widely felt from the deserts to the coast, and even reports that it was felt as far away as Phoenix Arizona, some 250 miles away. Nearly 2,000 felt reports were filed within the first hour of the quake.
If the felt reports are accurate, it's my experience that this quake's magnitude will be upgraded sometime soon.
Click on the picture above to see exactly where this quake struck, along with other quakes in the area that have occurred in 2007.
of 4.2 struck the lower Southern California Desert Friday Night. The quake was widely felt from the deserts to the coast, and even reports that it was felt as far away as Phoenix Arizona, some 250 miles away. Nearly 2,000 felt reports were filed within the first hour of the quake.If the felt reports are accurate, it's my experience that this quake's magnitude will be upgraded sometime soon.
Click on the picture above to see exactly where this quake struck, along with other quakes in the area that have occurred in 2007.
The Associated Press released a news story stating that a 3.2 magnitude earthquake occurred 13 miles north of Palm Springs on Sunday September 25. The fact of the matter is that no such quake occurred.
What did happen was what is called a "teleseism". Teleseisms are seismic waves caused by distant earthquakes. In this case, the teleseisms were caused by the 7.5 earthquake in Peru, which occurred several minutes before the teleseisms arrived in Southern California.
The Southern California Seismic Network's automatic earthquake detection system mistakenly thought the waves were those of a small local quake. Those who have pagers connected to the SCSN (Caltech/USGS employees, first responders, utility companies, and media) received a page (or automatic email) for a M3.2 quake near Desert Hot Springs at that time. As it turns out, the SCSN Duty Seismologist removed the event from the Simpson Map (the California earthquake map).
All earthquakes that occur are reviewed by a human. The automatic detection system is not perfect and sometimes mis-reports earthquakes.
Associated Press writers released this story without confirming that a quake actually occurred.
The quake in question was removed from the system within just a few minutes. Yet the news story lives on. Still, no reports of damage or injuries....
What did happen was what is called a "teleseism". Teleseisms are seismic waves caused by distant earthquakes. In this case, the teleseisms were caused by the 7.5 earthquake in Peru, which occurred several minutes before the teleseisms arrived in Southern California.
The Southern California Seismic Network's automatic earthquake detection system mistakenly thought the waves were those of a small local quake. Those who have pagers connected to the SCSN (Caltech/USGS employees, first responders, utility companies, and media) received a page (or automatic email) for a M3.2 quake near Desert Hot Springs at that time. As it turns out, the SCSN Duty Seismologist removed the event from the Simpson Map (the California earthquake map).
All earthquakes that occur are reviewed by a human. The automatic detection system is not perfect and sometimes mis-reports earthquakes.
Associated Press writers released this story without confirming that a quake actually occurred.
The quake in question was removed from the system within just a few minutes. Yet the news story lives on. Still, no reports of damage or injuries....
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