Very Strong earthquake in Guerrero, Mexico - Widespread slight damage in Acapulco area (2th quake) - At least 8 injuries

Update August 24: 19 towns/cities have been declared in a state of emergency, 1500 homes have been damaged with 10% of those resulting in a complete loss. Schools, hospitals and hotels only received superficial damage. 22,000 people have been affected by this earthquake and by heavy rains  that happened earlier this month.

Update August 22 07:22 UTC: CNN: At least 8 people have been injured by the earthquake. 438 homes, 44 schools, 11 hospitals and 9 public buildings were damaged after the earthquake. Most of the damage has been seen in Acapulco (as expected)

Update 21:00 UTC: Plan DN-III and Plan "sismo" have been implemented around Acapulco, this means the Mexican Army and civil protection will be able to manage resources and provide help to the people that have been affected by this earthquake.

Update 19:25 UTC :
The scenic route of Acapulco was closed after a car was hit by a rock.
- There are collapsed homes in the Chinameca neighborhood.
- A building was damaged in the apartment block "El Coloso",
- The following hospitals have been damaged in Acapulco: Ocotito,  Zumpango and the oncology hospital.
- Acapulco has been declared in a state of alert.

Screen Shot 2013-08-21 at 22.45.43

Image courtesy and copyright

Update 19:14 UTC : The airport of Acapulco was damaged with walls cracked, broken windows and fallen ceiling.

Update 16:41 UTC : All school classes in the province of Guerrero have been called off today. At least 5 schools have been reported with structural damage and the school directorate has said that it will inspect every school on potential structural damage before reopening.

Update 16:18 UTC : Guerrero is a Mexican province who has been hit by sometimes very strong earthquakes since many months, some of them exceeding M6. Even the Acapulco area had many quakes in 2012 and 2013, all without serious injuries and only slight damage.

Screen Shot 2013-08-21 at 22.44.39

Update 15:27 UTC : Huitzuco is another affected town. Three residental buildings and one chuch suffered minor damage there. Another damaged church is in Taxco, where parts of the ceiling fell down. Two nurses in Iguala were injured by falling pieces of ceiling panel, respectively by a collision with a door in their hospital. More people in Guerrero needed medical help for nervous breakdowns.

Update 15:18 UTC : The Good News: No damage was caused in the states of Veracruz and Puebla.

seismogram of the double earthquake - image courtesy SSN Mexico

seismogram of the double earthquake - image courtesy SSN Mexico

Update 15:05 UTC : Some houses in Hornos Insurgentes, a part of Acapulco, collapsed. One girl was injured there. (Some of the damage in Acapulco might be caused by an M 5.6 aftershock, which occurred a few minutes after the mainshock)
Rockfall was observed in rural areas of Guerrero, blocking some roads.

Update 14:56 UTC : It seems that also Mexico City was slightly affected. Residents reported cracks to walls in some parts of the town and a crack in a classroom. No big damage among it.

Update 14:38 UTC : At least 3 hospitals were damaged, two in Acapulco and one in San Marcos.
Schools and other public buildings in this towns were closed, because some of them were damaged.

Update 14:08 UTC : More damage reports arrive from Acapulco. Some buildings on harbour area of Acapulco suffered heavy damage. Large cracks and collapsed walls are reported. At least 3 school buildins in Acapulco were also damaged.

Update 14:03 UTC : Damage is reported from some parts of Guerrero. Buildings in San Marcos, Atapulco and Chilpancingo suffered cracks by the quake, Civil protection authorities reported.

Update 13:44 UTC : Civil protection in Mexico City and other regions are now looking for potential damage. Helicopters fly about DF, public buildings (schools, etc.) are unter investigation. No damage is reported yet, while people are starting to return to their houses.

Update 13:16 UTC : Earthquake alarms in Mexico City went on when the quake happened, triggering people to come out of their houses, seconds before the seismic waves arrived.
In Acapulco, 55 km southwest of the epicenter, the quake caused disturbances in the telephone connection.

A very strong earthquake occurred in southern Guerrero, Mexico. It was well felt in Mexico City. USGS ShakeMap expects a strong shaking in epicenter region, which will probably cause light to moderate damage to weak buildings

Guerrero Shakemap

Nearby Cities
18km (11mi) NW of Ayutla de los Libres, Mexico
23km (14mi) N of San Marcos, Mexico
30km (19mi) SE of Tierra Colorada, Mexico
59km (37mi) ENE of Acapulco de Juarez, Mexico
268km (167mi) S of Mexico City, Mexico


Most important Earthquake Data:

Magnitude : 6.2

Local Time (conversion only below land) : 2013-08-21 07:38:32

GMT/UTC Time : 2013-08-21 12:38:32

Depth (Hypocenter)  : 30 km

Depth and Magnitude updates in the list below.

Share your earthquake experience (I Have Felt It) with our readers.
Click on the "I Felt It" button behind the corresponding earthquake. Your earthquake experience is not only important for science, but also for people in the area as well as our global readership.

SRC Location UTC Date/time M D INFO
EMSC Guerrero, Mexico Aug 21 13:02 5.2 20 MAP I Felt It
GEOFON Guerrero, Mexico Aug 21 13:02 5.2 20 MAP I Felt It
USGS San Marcos, Mexico Aug 21 13:02 5.2 37 MAP I Felt It INFO
USGS San Marcos, Mexico Aug 21 13:02 5.3 21 MAP I Felt It
USGS Guerrero, Mexico Aug 21 12:38 6.1 34 MAP I Felt It
EMSC Guerrero, Mexico Aug 21 12:38 6.2 30 MAP I Felt It
GEOFON Guerrero, Mexico Aug 21 12:38 6.2 30 MAP I Felt It INFO
  • Mexico city - Estaba despierto, las lámparas se movían mucho. Sonó la alarma contra temblor de una escuela cercana. Fuerte pero no tanto, todos se despertaron.
  • estado de mexico - sideways movement
  • cuernavaca - Comenzo lento y fue aumentando
  • Tepeapulco - Se empezaron a mover los cristales del edificio donde trabajo
  • Mexico city - Light but long shaking
  • lazaro cardenas, jalisco - Se sintio muy poquito... se movio el frutero en la mesa
  • Los Reyes La Paz Edo Mex. - creo k las alarmas nos asustan un poco pero si se sintio fuertecito...
  • Meixco City - Woke up feeling like I was on a ship
  • Mexico - sensations de wagon-lit ou de bateau
  • Mexico city - Llevo toda la vida viviendo aquí y nunca ha habido una réplica tan rápido. El cielo se veía muy luminoso en la madrugada(2am) parecía como de día, era un azul grisáceo muy claro.
  • ciudad de mexico - bastante fuerte el temblor todo se movia
  • MEXICO City - sensation de "wagon lit" ou de bateau
  • Puebla, Mexique - Deux secousses légères, qui m'ont donné le vertige et ont brassé les chandeliers de cristal. Aucun danger, mais expérience désagréable.
  • Xalapa, Veracruz - Woke up to the sound of wind chimes. Anything hanging was swaying. Hushed silence outside. A long slow movement.
  • Mexico City - Tha apartment was moving in a sort of circular motion. The doors of the closets were opening and closing by themselves.Crack of walls could be heard. I live in Tlatelolco in Mexico City on a 22nd floor.
  • Mexico City - From the 9th floor near the 'Angel' in the Reforma area I could clearly feel the strong swaying in the building.
  • Aguadilla - 2 second weak shake
  • Mexico City - I was awakened by the alarm sound of a weather radio receiving the signal of the Seismic Alert System. I proceded to the safety zone in the apartment of a 4th floor in the Del Valle neighborhood and a few seconds later the shaking began. It wasn't very strong, but strong enough to sway all the hanging objects around the apartment, including stone wind chimes that clinked very loudly. Then a half an hour later, the wind chimes announced the arrival of the aftershock, which I could not actually fe
  • Acapulco - yo estaba en la escuela y en segundo piso,depronto empezo a temblar y todos salimo inclusive se calleron algunas bancas...llegamos al patio de la escuela y los padres de familia empezaron a llegar por los alumnos..
  • Acapulco - 's ochtends vroeg begon het gebouw Azteca Princess in Acapulco, wij zaten op de 8e verdieping, ernstig te beven en bewegen, we konden niet lopen, want er was teveel beweging. Een uur later nog een redelijk heftige naschok en, later in de middag nog twee, en 's nachts nog een laatste naschok
  • USGS San Marcos, Mexico Aug 21 12:38 6.2 20 MAP I Felt It INFO


    Our Fast Earthquake and Tsunami Twitter Accounts :


    Other earlier earthquakes in the greater epicenter area (since 1900)

    Strongest earthquakes within a 150 km radius from this earthquake (max. 60)




    I felt the shaking *
    Country where you felt the earthquake *
    City/Village where you felt the earthquake *
    Street or suburb (area) where you felt the earthquake
    Latitude (area) where you felt the earthquake
    Longitude (area) where you felt the earthquake
    Shaking Strength *
    MMI II (Very weak shaking) ?
    People :
    Felt by persons at rest, on upper floors or favorably placed.
    MMI III (Weak shaking) ?
    People :
    Felt indoors; hanging objects may swing, vibration similar to passing of light trucks, duration may be estimated, may not be recognized as an earthquake.
    MMI IV (Light shaking) ?
    People :
    Generally noticed indoors but not outside. Light sleepers may be awakened. Vibration may be likened to the passing of heavy traffic, or to the jolt of a heavy object falling or striking the building.
    Fittings :
    Doors and windows rattle. Glassware and crockery rattle. Liquids in open vessels may be slightly disturbed. Standing motorcars may rock.
    Structures :
    Walls and frames of buildings, and partitions and suspended ceilings in commercial buildings, may be heard to creak.
    MMI V (Moderate shaking) ?
    People :
    Generally felt outside, and by almost everyone indoors. Most sleepers awakened. A few people alarmed.
    Fittings :
    Small unstable objects are displaced or upset. Some glassware and crockery may be broken. Hanging pictures knock against the wall. Open doors may swing. Cupboard doors secured by magnetic catches may open. Pendulum clocks stop, start, or change rate.
    Structures :
    Some large display windows cracked. A few earthenware toilet fixtures cracked.
    MMI VI (Strong shaking) ?
    People Felt by all. People and animals alarmed. Many run outside. Difficulty experienced in walking steadily.
    Fittings :
    Objects fall from shelves. Pictures fall from walls. Some furniture moved on smooth floors, some unsecured free-standing fireplaces moved. Glassware and crockery broken. Very unstable furniture overturned. Small church and school bells ring. Appliances move on bench or table tops. Filing cabinets or "easy glide" drawers may open (or shut).
    Structures :
    Slight damage to buildings with low standard. Some stucco or cement plaster falls. Large display windows broken. Damage to a few weak domestic chimneys, some may fall.
    Environment :
    Trees and bushes shake, or are heard to rustle. Loose material may be dislodged from sloping ground, e.g. existing slides, talus slopes, shingle slides.
    MMI VII (Very strong shaking) ?
    General alarm. Difficulty experienced in standing. Noticed by motorcar drivers who may stop.
    Fittings :
    Large bells ring. Furniture moves on smooth floors, may move on carpeted floors. Substantial damage to fragile contents of buildings.
    Structures :
    Unreinforced stone and brick walls cracked. Low standard buildings cracked with some minor masonry falls. A few instances of damage to buildings of ordinary workmanship. Unbraced parapets, unbraced brick gables, and architectural ornaments fall. Roofing tiles, especially ridge tiles may be dislodged. Many unreinforced domestic chimneys damaged, often falling from roof-line. Water tanks Type I burst. A few instances of damage to brick veneers and plaster or cement-based linings. Unrestrained water cylinders (hot-water cylinders) may move and leak. Some common windows cracked. Suspended ceilings damaged.
    Environment :
    Water made turbid by stirred up mud. Small slides such as falls of sand and gravel banks, and small rock-falls from steep slopes and cuttings. Instances of settlement of unconsolidated or wet, or weak soils. Some fine cracks appear in sloping ground. A few instances of liquefaction (i.e. small water and sand ejections).
    MMI VIII (Severe shaking) ?
    People Alarm may approach panic. Steering of motorcars greatly affected. Structures : Low standard buildings heavily damaged, some collapse. ordinary workmanship buildings damaged, some with partial collapse. Reinforced masonry or concrete buildings damaged in some cases. A few instances of damage to buildings and bridges designed and built to resist earthquakes. Monuments and pre-1976 elevated tanks and factory stacks twisted or brought down. Some pre-1965 infill masonry panels damaged. A few post-1980 brick veneers damaged. Decayed timber piles of houses damaged. Houses not secured to foundations may move. Most unreinforced domestic chimneys damaged, some below roof-line, many brought down. Environment : Cracks appear on steep slopes and in wet ground. Small to moderate slides in roadside cuttings and unsupported excavations. Small water and sand ejections and localized lateral spreading adjacent to streams, canals, lakes, etc.
    MMI IX (Violent shaking) ?
    Structures Many low standard buildings destroyed. Ordinary workmanship buildings heavily damaged, some collapse. Reinforced masonry or concrete buildings damaged, some with partial collapse. Buildings and bridges designed and built to resist earthquakes damaged in some cases, some with flexible frames seriously damaged. Damage or permanent distortion to some buildings and bridges, designed and built to normal use standards. Houses not secured to foundations shifted off. Brick veneers fall and expose frames. Environment : Cracking of ground conspicuous. Landsliding general on steep slopes. Liquefaction effects intensified and more widespread, with large lateral spreading and flow sliding adjacent to streams, canals, lakes, etc.
    Tell us your experience and how many seconds the shaking lasted + let us know if your property has been damaged (even slight damage). (max. 500 characters)
    * mandatory fields