Earthquakes list July 23, 2011

Last update: July 24, 2011 at 7:43 am by By

M 5.0      2011/07/23 22:45     Depth 20.6 km     OFFSHORE TARAPACA, CHILE
06:45:21 PM at epicenter
Shallow moderate earthquake approx.
55 km (34 miles) WNW (282°) from Iquique, Chile
Satellite map of the greater epicenter area

M 3.6      2011/07/23 16:50    Depth 2.0 km     SOUTHERN ITALY
local time 18:50:25.2 2011-07-23
Please read our in-depth report about this earthquake – Click here
Weak but very shallow earthquake. Based on the many Italian people visiting our site, the earthquake has been well felt in the greater epicenter area.
This earthquake has also been felt in Rome, approx. 60 km from the epicenter.
6 km E Latina (pop 113,332) and 11 km NW Pontinia (pop 13,593)
Satellite map of the greater epicenter area

M 5.5      2011/07/23 16:34     Depth 14.0 km     GUAM REGION
July 24, 2011 at 02:34:41 AM at epicenter
UPDATE FELT REPORT : ” I was awakened by the sound of my mirrored closet doors banging against each other.  I recognized this as an earthquake from my experiences living in California.  To double check if it was indeed an earthquake, I went to my dining room to check my chandelier and it was still swinging back and forth from the earthquake.  I checked my clock and it was @ 2:37am”
Max. MMI IV (light shaking for 186,000 people).
This is the Xth earthquake in a row on nearly the same location. Rather close to Guam and with an epicenter on a huge undersea subduction mountain.
90 km (56 miles) ESE (122°) from HAGATNA, Guam
Satellite map of the greater epicenter area

M 5.1 5.5   2011/07/23 13:54    Depth 25.0 km     COSTA RICA
07:54:19 AM at epicenter
Please read our in-depth report about this earthquake – Click here
The epicenter of this earthquake is about 20 km out of the Costa Rica coast.
As the epicenter is below the seabed, we do not expect any serious damage from this earthquake.
The above data are coming from Ovisicori Costa Rica. Both USGS and EMSC are reporting depths of + 60 km.
Costa Rica data have not been reviewed so far by a seismologist.
Felt report : un premiere secousse de faible intensite suivie d’une seule violente secousse.J’ai vu clairement la stucture de l’immeuble bouger (translation : a first weak shockwave followed by a strong shack. I saw the building shaking in front of my eyes) – (MMI VI indicated)
Guacanaste : At beachfront hotel in Guanacaste region in Costa Rica (northern part of country on Pacific side). Felt like about a 3.5, based on years of living in CA.
MMI IV (light shaking) is the max. reported in the Liberia, Aguacaliente, Nicoya area.
24 km al Noroeste de ZAPOTILLAL de Santa Cruz de Guanacaste
Satellite map of the greater epicenter area

M 3.3      2011/07/23 07:36     Depth 16.6 km      GREATER LOS ANGELES AREA, CALIFORNIA
12:36:40 AM at epicenter
Please read our in-depth report about this earthquake - Click here
3 km (2 miles) SSE (149°) from Gardena, CA and 6 km (4 miles) NE (53°) from Torrance, CA
Satellite map of the greater epicenter area

M 5.3      2011/07/23 06:28     Depth 44.8 km      ALASKA PENINSULA
July 22, 2011 at 10:28:35 PM at epicenter
A series of moderate to strong harmless earthquakes in the greater Sand Point area.
People who experienced it have reported a III MMI (weak shaking). The lower magnitude can be explained because of the distance and the focal depth.
70 km (43 miles) SW of Sand Point, Alaska and 90 km (55 miles) ESE of Cold Bay, Alaska
Satellite map of the greater epicenter area

M 6.4      2011/07/23 04:34     Depth 35.7 km     NEAR THE EAST COAST OF HONSHU, JAPAN
01:34:24 PM at epicenter
Please read our in-depth report about this earthquake – Click here
Very strong coastal aftershock close to Ofunato, one of the towns severely hit by the March 11 tsunami.
112 km (69 miles) SE of Morioka, Honshu, Japan
Satellite map of the greater epicenter area

M 5.5      2011/07/23 02:56     Depth 120.6 km      SAN JUAN, ARGENTINA / CHILE
Friday, July 22, 2011 at 11:56:53 PM at epicenter
Harmless deep high Andes earthquake. 222,000 people have felt a light shaking and a lot more a weak shaking.
130 km (80 miles) SE of Vallenar, Atacama, Chile
Satellite map of the greater epicenter area

Summary of earthquakes only faintly felt by people
M 4.9      2011/07/23 14:24     Depth 153.0 km     KEPULAUAN BARAT DAYA, INDONESIA
M 4.5      2011/07/23 06:27     Depth 60.2 km      OFFSHORE CHIAPAS, MEXICO
M 4.5      2011/07/23 01:27     Depth 405.3 km      SOLOMON ISLANDS

Japan, Honshu : aftershocks of M 4.5 or greater
M 4.6      2011/07/23 02:37     Depth 23.7 km      NEAR THE EAST COAST OF HONSHU, JAPAN

Daily summary of earthquakes only surrounded by a lot of water
M 4.7      2011/07/23 12:53     Depth 10.0 km     SOUTH OF PANAMA
M 4.7      2011/07/23 07:51     Depth 219.1 km      BANDA SEA, INDONESIA
M 5.2      2011/07/23 04:40     Depth 366.0 km      SOUTH OF THE FIJI ISLANDS

Earthquakes occurred yesterday (UTC time), but today local time

M 5.6      2011/07/22 20:58     Depth 4.4 km     GUAM REGION
July 23, 2011 at 06:58:55 AM at epicenter
Max. MMi light shaking at Guam island. Epicenter on the high subduction slope.
93 km (57 miles) SE of HAGATNA, Guam
Satellite map of the greater epicenter area

seismograph - recordingUseful information to read this daily earthquake list
This earthquake list covers important earthquakes in the world.
If a more detailed page is present, the earthquake line will be linked to the detailed page.
For your comfort, we will provide in most cases Google Satellite Map links to give you an idea where the earthquake struck, which terrain it happened and if villages or cities are located in the immediate vicinity. The reference for the time zone is UTC (Coordinated Universal Time, also called GMT)
The page is regularly updated to add new earthquakes.
green color = NOT dangerous for damage or injuries
orange color = MODERATE risk for damage or injuries
red color = CONSIDERABLE risk for damage or injuries

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I have felt it – Ik heb het gevoeld – Το έκανα αισθάνεται – Yo lo siento – 我的确感到了 – 私はそれを感じていました- Ich habe es gefühlt – Bunu hissediyorum yaptı – لم أشعر أنه

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People :
Felt by persons at rest, on upper floors or favorably placed.
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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.
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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.
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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.
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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.
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People
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).
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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.
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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.
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