Magnitude 5.4 - SOUTHERN CALIFORNIA

[Shiloh]

Source: http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/ci15200401.php

Magnitude 5.4 - SOUTHERN CALIFORNIA
2012 August 26 20:57:58 UTC


Earthquake Details

This is a computer-generated message -- this event has not yet been reviewed by a seismologist.

Magnitude 5.4
Date-Time

Sunday, August 26, 2012 at 20:57:58 UTC
Sunday, August 26, 2012 at 01:57:58 PM at epicenter

Location 33.026?N, 115.540?W
Depth 8.9 km (5.5 miles)
Region SOUTHERN CALIFORNIA
Distances

5 km (3 miles) N (357?) from Brawley, CA
8 km (5 miles) E (100?) from Westmorland, CA
11 km (7 miles) SSW (193?) from Calipatria, CA
27 km (16 miles) N (4?) from El Centro, CA
149 km (93 miles) ENE (68?) from Tijuana, Baja California, Mexico

Location Uncertainty horizontal +/- 0.3 km (0.2 miles); depth +/- 0.7 km (0.4 miles)
Parameters Nph= 81, Dmin=13 km, Rmss=0.33 sec, Gp= 83?,
M-type=local magnitude (ML), Version=0
Source

California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID ci15200401

 

[Shiloh]

Re: Magnitude 5.4 - SOUTHERN CALIFORNIA

Much small earthquake activity is going on in southern CA: http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.php

Could be coincidence or prelude to something else. In any case, best be prepared.

 

[Shiloh]

Re: Magnitude 5.4 - SOUTHERN CALIFORNIA

Source: http://www.nbcbayarea.com/news/nati...y-Earthquake-Felt-in-San-Diego-167483415.html


SoCal Rattled by Quake Swarms
By Monica Garske
| Sunday, Aug 26, 2012 | Updated 2:16 PM PDT

Snip:

?[The Brawley Seismic Zone] is a broad zone with lots of little faults,? explained Abbott.
?This area has clearly activated. We will likely experience swarms of 3, 4 and 5-magnitude [earthquakes] but they are not likely to increase in intensity. Of course, there are no guarantees on this, but history says they likely won?t get bigger ? that we will experience more of the same or smaller quakes,? he added.

 

[Catbird]

Re: Magnitude 5.4 - SOUTHERN CALIFORNIA

The number of quakes is now 100. It's definitely a swarm.

And...

"Pioneer Memorial Hospital in Brawley, Calif., evacuating patients due to ongoing quakes in the area - @nbcsandiego"

 

[Emily]

Re: Magnitude 5.4 - SOUTHERN CALIFORNIA

The article reports that some manufactured homes were shaken off their foundations, but no injuries.

http://www.boston.com/news/nation/2012/08/27/earthquake-swarm-puts-california-town-edge/RCsuerhGzvQ9jqsDueRJfL/story.html

Earthquake swarm puts California town on edge
AP / August 27, 2012
BRAWLEY, Calif. (AP)
[snip]
USGS seismologist Lucy Jones said earthquake swarms are characteristic of the region, known as the Brawley Seismic Zone.

??The area sees lots of events at once, with many close to the largest magnitude, rather than one main shock with several much smaller aftershocks,?? Jones said.

The last major swarm was in 2005, following a magnitude-5.1 quake, she said.

Sunday?s quake cluster occurred in what scientists call a transition zone between the Imperial and San Andreas faults, so they weren?t assigning the earthquakes to either fault, Graves said.end of story marker