6.9 Magnitude Earthquake near the Coast of Central Peru – Oct 28, 2011

 A 6.9 magnitude earthquake hit near the coast of Central Peru.  The earthquake hit at 01:54 PM local time (18:54 UTC). Initial USGS data stated that the epicenter was on the coastline approx. 50 km from Ica, a big Peruvian city. Lucky escape for Ica,  as the Peruvian seismological agency IGP did locate the epicenter at 117 km from Ica.

83 people injured, 660 homeless and 132 houses collapsed… in depth report at earthquake-report

On the same day, 7 aftershocks were recorded from M4.7 to M.5.5. and today, October 29 again 4 aftershocks from M.4.7 to M4.9


Earthquakes M 6+

From September 14. 2011 to October 28, 2011

Within 45 days, 21 Earthquakes with a Magnitude 6 or higher !!

6.2 Alaska on  Sept. 14 / 6.0 Cuba , 6.1 Nw. Zealand , 6.2 Japan , 7.3 Fiji all on Sept. 15 / 6.6 Japan , 6.0 Japan both on Sept.16 / 6.9 India on Sept. 18 / 6.4 Tonga on Sept. 22 / 6.2 Argentina on Oct. 6 / 6.1 Kermadec Islands on Oct. 7/6.8 Bali on Oct.13/6.7 Papua Nw. Guinea, 6.1 Amurskaya Russia both on Oct.14/6.3 Papua Nw. Guinea on Oct.18/ 6.1 Hokkaido Japan Region on Oct.21 / 7.4 Kermadec Islands Region on Oct. 21/7.2  and 6.0 both Eastern Turkey on Oct. 23/6.0 Fuji Islands on Oct.26/6.9 Coast of Central Peru on Oct.28/

Probably there were more recorded M6 + earthquakes, but as usual USGS downgrade the quakes, like the M.68 at Bali.

Indonesian authorities said the earthquake measured a magnitude of 6.8, but the US Geological Survey put the quake at magnitude 6.0

Our regular reader Rudyanto Bali promotion Center mailed to USGS with the inquiry why USGS downgrade quakes and this is the reply from USGS

Hello Rudyanto , bali promotion Center

This was the best available estimate of the earthquake’s size, at the time that the web page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude, they are not considered the official magnitude.

– Lisa
Lisa Wald, Geophysicist
Web Project Manager
USGS Earthquake Hazards Program
Golden, CO

Magnitude 6.9
Location 14.515°S, 76.009°W
Depth 23.9 km (14.9 miles)
Distances 51 km (31 miles) SSW of Ica, Peru
112 km (69 miles) S of Chincha Alta, Peru
201 km (124 miles) W of Puquio, Peru
288 km (178 miles) SSE of LIMA, Peru
Location Uncertainty horizontal +/- 16.5 km (10.3 miles); depth +/- 2.7 km (1.7 miles)
Parameters NST=507, Nph=517, Dmin=293.9 km, Rmss=1.12 sec, Gp= 50°,
M-type=regional moment magnitude (Mw), Version=8
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event ID usb0006fv2

Source and author: earthquake.report *  *   

3 responses to “6.9 Magnitude Earthquake near the Coast of Central Peru – Oct 28, 2011

  1. I still think these earthquakes had something to do with Jupiter especially the Peru one as last night Jupiter was at is opposition closest to Earth so just maybe Jupiter has a strong effect from so far away and it will be interesting to see if the Earthquakes die off now as it moves away!


    • it is common knowledge that all other celestial bodies do have effects upon the earths crust, maybe not easily measured, but when you are dealing with crusts stuck to a point where only a minor explosion/shift would move them, anything could factor in. We saw the same thing when the Sun and
      Saturn were directly opposite each other with the earth in the middle, this occurred roughly around the time of the Japanese earthquake/tsunami this year. Stuff like this is always interesting but science doesn’t see it as a significant precursor for natural disasters so it probably wont be studied for a long time.



  2. It will be interesting to see what happens, earthquake wise, on 11/11/11!