Earthquake overview : A very strong Magnitude 6.5 earthquake has hit the Mexican state of Michoacan. The hypocenter was initially set at 84 km but has been decreased later on to a dangerous depth of 20 km . 36000 people are without power as of 2am gmt but no major damage is reported.
“I have Felt it” Reports –> see below + Let us know “how you have felt this earthquake”
To read the full story as it happened, we advise our readers to start at the lower part of the page (earthquake data).
Check also our Mexico-only earthquake list
Keep this page open or return regularly as we will be back with more details when they become available
Update 13/04 – 07:35 UTC
After searching authorities reports and news reports, we were unable to find any damage occurred because of this earthquake. We are however not sure about all this, as the epicenter center area is mainly a wilderness and rural area with only a few smaller roads. If anyone has knowledge of damage or injuries, please use one of the forms below to let us know.
On September 19 1985, a Magnitude 8 earthquake occurred at only 43 km from today’s epicenter. This earthquake was very cruel as it killed approx. 9,500 people
- So far NO reports of damage or injuries. As the epicenter is located in a wilderness area with only a limited number of roads but with a limited agrarian community, we expect reports to ripple in after many hours.
- EMSC maintains the Mw7.0 at a depth of 80 km for the moment, but we expect this to be changed for the USGS and Mexican data.
- We have just changed the title as USGS has been decreasing the depth to a dangerous 20 km. The new USGS data are somewhat confirmed by the local Servicio Sismologico Nacional who reports a Magnitude of 6.4 at 16 km depth. The combination of Magnitude and depth can be a damaging cocktail. We expect a radius of max. 40 km at highest risk. The new revised data will have generated a strong shaking for 15,000 people and a moderate MMI V shaking for 284,000 people.
- USGS has just downgraded the Michoacan earthquake from the initial Mw7.0 to Mw6.5. The depth however has been decreased further to 20 km, which makes the earthquake very dangerous for damage in the epicenter area.
- Our greatest fear is the danger for landslides in the area. The terrain is very hilly as shows this Wikipedia description : The state is crossed by the Sierra Madre del Sur, the Trans-Mexican Volcanic Belt and the Inter-mountain Valleys region. The Sierra Madre del Sur crosses the state northwest to southeast for approximately 200 km in the southwest between the municipalities of Chinicuila and Arteagaalong the Pacific Coast. It is considered to be a continuation of the Sierra Madre Occidental. Peaks in this range average about 2,900 masl, with the largest being the Cerro de las Canoas. The Mexican Trans Volcanic Belt crosses the state from west to east toward the Toluca Valleyand Valley of Mexico. This mountain range is marked by appearance of many volcanoes, active, dormant, and extinct alike (ER: this is however an earthquake which will have no immediate impact on the volcanoes). This system is subdivided into regions such as the Sierra de Tancítaro, Sierra de Periban, Sierra de San Angel and others. The best known volcano in this region is the Paricutín volcano
- We do thank all the people in Mexico who have shared their experiences with our readers. Sharing information with each other is the best way of finding out what the extend of the earthquake is.
- Scientists will have a hard time in explaining that there is NO relation in between the Oregon Mw5.9 earthquake and the M7.0 Mexico earthquake. There was a diffrence of 14 minutes in between the Oceanic Oregon earthquake and the Mexico subduction earthquake.
- USGS keeps his Magnitude Mw7.0 but has decreased the depth to 65 km instead of the initial 84 km.
- Today’s earthquake is of a completely different type than the massive March 20 earthquake. Also the epicenter area is in a different part of the country.
- There is of course NO tsunami danger as the earthquake occurred below land
- 637,000 people will have felt a strong shaking and 1,000 a very strong shaking!!
- There are angry people because earthquake alarms didn’t activated in some parts of the country.
- Power is off in some parts of Michoacan
- Update 23:28 UTC : Carlos Robles reports that :
* It was felt very strong at Lazaro Cardenas and strong in the center of Puebla.
* Alarms were activated before the earthquake and there were evacuations.
* Aftershock of 4.0M.
* As I have seen on live TV, communications are going down when they call to people at other cities.
- The Mexican seismological Agency reports a magnitude of 6.4. EMSC (Europe) report M7.0 at a depth of 80 km.
- Carlos Robles just reports that nor Oaxaco nor Mexico City did report damage. Earthquake-Report.com does not expect any damage neither
- This is a typical subduction earthquake where the Oceanic plate is subducting the North American plate.
- Lazaro Cardenas has a population of 178,817. Lazara Cardenas is approx. 69 km from the earthquake’s epicenter.
- This earthquake will be felt ALL OVER CENTRAL AMERICA because of the depth of the hypocenter.
- The first I Have Felt It reports are confirming the depth of the earthquake as only weak to very weak shaking is indicated
- Good news (if confirmed) – the earthquakes hypocenter is at a depth of approx. 80 km which will weaken the impact a lot
- Collecting news at the moment
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“I Have Felt It” reports as received by Earthquake-Report.com
See below for all the received Earthquake Experience reports as received by earthquake-report.com
Most important Earthquake Data:
Magnitude : Mw 7.0
UTC Time : Wednesday, April 11, 2012 at 22:55:13 UTC
Local time at epicenter : Wednesday, April 11, 2012 at 05:55:13 PM at epicenter
Depth (Hypocenter) : 84 km
62 km (39 miles) SW (233°) from La Mira, Michoacán, Mexico
66 km (41 miles) WNW (303°) from Las Guacamayas, Michoacán, Mexico
342 km (213 miles) WNW (299°) from Acapulco, Guerrero, Mexico
Links to important maps
USGS Did You Feel It Map
Google satellite map showing the epicenter and the surrounding area
Historic earthquakes map
Seismic hazard map
Focal mechanism report
Human impact map
GDACS earthquake report
I Have Felt this earthquake
Apr 11 22:55 PM
I Felt It
Apr 11 22:55 PM
I Felt It
Apr 11 22:55 PM
I Felt It
Apr 11 22:55 PM
I Felt It
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