(Major) Earthquakes list April 28, 2012 – Moderate earthquake in Southern California

Last update: April 29, 2012 at 8:17 am by By

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Shaking intensities, max. light shaking (MMI IV)

Earthquake in Southern California
Epicenter close to Devore and 13 km (8 miles) W (270°) from Crestline, CA
16 km (10 miles) N (10°) from Fontana, CA
We expect a max. light shaking. Following the first incoming I Have Felt It reports, the quake was experienced as a strong jolt.  6,000 people will have felt a light shaking and 16 million people a weak shaking !
Earthquake-Report.com does not expect this earthquake to be damaging.
Update 15:56 UTC : Most people close to the epicenter are reporting a strong jolt for a couple seconds only. Strong short jolts are considered as less dangerous versus sustained shaking.  This is the second earthquake this week in California sending people in big numbers to our site. The first one was on Monday with epicenter near Laguna Niguel.

Weak earthquake felt in Beijing, Chinaclick here for our I Have Felt It reports

Very strong deep earthquake in the Tonga region
11:08:06 PM at epicenter –  - Epicenter location see below in list
Harmless for shaking damage and tsunami as the depth and source of earthquake is unable to generate strong shaking or tsunami waves. Additionaly, the people living in this region are familiar with strong shaking.
49 km (31 miles) W (267°) from Neiafu, Tonga
Official NOAA statement : A DESTRUCTIVE TSUNAMI WAS NOT GENERATED BASED ON EARTHQUAKE AND HISTORICAL TSUNAMI DATA.
Telecommunications in Tonga seem to work as we are noticing many readers from Tonga checking for more information.
Update 10:28 UTC
: USGS has decreased the Magnitude from Mw6.7 to Mw6.4. Depth has been adjusted to 129.4 km.
Expected MMI values (based on theoretical USGS data) : 9,000 people will have experienced a moderate MMI V shaking and 104,000 people a light shaking.  No damage is expected.
Update 13:17 UTC :
USGS has again changed the Magnitude and returns to his Mw6.7 value which was published during their first reporting.

Label info : M = magnitude, D = depth (km), Time = UTC – Click here for the Time Zone world map.

SRC Location UTC Date/time M D INFO
EMSC Baja California, Mexico Apr 28 21:25 4.1 0 MAP I Felt It
USGS Baja California, Mexico Apr 28 21:25 4.1 0 MAP I Felt It
GEOFON New Britain Region, P.n.g. Apr 28 19:45 4.6 46 MAP I Felt It
EMSC New Britain Region, P.n.g. Apr 28 19:45 4.8 60 MAP I Felt It
USGS New Britain Region, Papua New Guinea Apr 28 19:45 4.9 55 MAP I Felt It
USGS New Britain Region, Papua New Guinea Apr 28 19:21 5.7 48 MAP I Felt It
EMSC New Britain Region, P.n.g. Apr 28 19:21 5.7 60 MAP I Felt It
GEOFON New Britain Region, P.n.g. Apr 28 19:21 5.2 76 MAP I Felt It
GEOFON Prince Edward Islands Region Apr 28 19:06 4.5 16 MAP I Felt It
USGS Prince Edward Islands Region Apr 28 19:06 5.0 14 MAP I Felt It
EMSC Prince Edward Islands Region Apr 28 19:06 5.0 10 MAP I Felt It
USGS Kepulauan Mentawai Region, Indonesia Apr 28 18:00 5.3 31 MAP I Felt It
EMSC Kep. Mentawai Region, Indonesia Apr 28 18:00 5.3 28 MAP I Felt It
GEOFON Southern Sumatra, Indonesia Apr 28 18:00 5.1 10 MAP I Felt It
EMSC Greenland Sea Apr 28 17:11 4.4 2 MAP I Felt It
USGS Greenland Sea Apr 28 17:11 4.3 9 MAP I Felt It
GEOFON Salta Province, Argentina Apr 28 16:24 4.8 189 MAP I Felt It
USGS Jujuy, Argentina Apr 28 16:24 4.4 187 MAP I Felt It
EMSC Salta, Argentina Apr 28 16:24 4.4 181 MAP I Felt It
EMSC Southern California Apr 28 15:07 4.1 10 MAP I Felt It
  • 60 Calle Cadiz,LagunaWoods,92637 - at8:07AM the Crestline EQ I felt a light-short movement and then the cabinet shook for a Very short time I am on the 2nd floor of a frame 8 unit building J Duffy
  • Crestline, CA - It felt like an Angel was shaking the house. The earthquake didn't give off a deadly feeling, but rather a stable yet calm shake.
  • USGS Southern California Apr 28 15:07 3.8 13 MAP I Felt It
  • High Desert, ca - A jolt
  • Pasadena, Ca - 8:10 am,small tremor
  • Whittier - April 28th 2012 at 8:05 am. felt like a sharp jerk coming from the hills of whittier towards la mirada. Had a very distinct rolling feeling.
  • High Desert,ca - Strong jolt
  • California - I felt the shaking for 10 seconds and i thought there's gonna be another one so i waited and there's nothing, not even an aftershock
  • Burbank, CA - A shake, rattle and small roll. I was upstairs, so felt the roll. lasted 2-3 seconds.
  • Loma Linda - Light shaking indicated
  • Fontana - Upstairs when i felt it. It seemed to come from a northern direction. it was like i felt it coming cus my house shook a little and then really hard. lasted about 6 seconds
  • Upland, ca - Slight shaking wjth a bjt of a rolling sensation...enough to wake me up.but not enough to get out of bed for
  • Chino - felt one small jolt but heard it throughout my house.
  • San Dimas, ca - Felt slight shaking at about 8am
  • San Bernadino - I felt it for maybe 4 sec Never felt on before so it was enough to scare me
  • California - There was a sudden jolt and then it was followed by light shaking
  • Temple city, CA - I was laying on bed then ran under table with a lot of adrenaline to the case of bottled water stored there. Then I waited for an aftershock that never came and came out
  • Hesperia - Felt a quick jolt. Didnt even last long enough for my brain to tell me to get up lol
  • Rialto - Didn't really feel it as much as I heard it rumble from the windows. It lasted maybe 2 or 3 seconds.
  • Pasadena - Strong side to side shaking for about 3-5 seconds then a lower strength for about 10 seconds. Strong enough to make me worry.
  • Hesperia, CA - While sitting on toilet i started yelling at kids because I hought they were destroying house when I realized kids couldn't possibly make the whole bathroom shake for 3 secs!!!
  • Riverside, California - 8:10 a.m. Heard rumble, felt light shake and rattling of house, was expecting it to build but never did.
  • Twin Peaks, CA - The windows were rattling and it woke me up, but it didn't last long.
  • Twin Peaks, CA - Moderate shaking indicated
  • Pomona, ca - Felt the head board on my bed shake. I did get a little scared of course..
  • High Desert - A strong jolt felt
  • GEOFON North Of Honduras Apr 28 13:49 4.4 40 MAP I Felt It
    GEONET Ne Of New Zealand Apr 28 10:11 5.3 310 MAP I Felt It
    USGS Tonga Apr 28 10:08 6.7 129 MAP I Felt It
  • Nukualofa - Shaking enough to make pictures on the wall move and china in the cupboards rattle. Seemed to go on for some time.
  • Nuku'alofa, Tonga - The house Shook but just for little moment...
  • EMSC Tonga Apr 28 10:08 6.6 100 MAP I Felt It
    GEOFON Tonga Islands Apr 28 10:08 6.6 153 MAP I Felt It
    USGS Tonga Apr 28 10:08 6.7 117 MAP I Felt It
    GEOFON Timor Region Apr 28 08:55 4.9 10 MAP I Felt It
    EMSC Timor Region, Indonesia Apr 28 08:55 4.9 10 MAP I Felt It
    GEOFON Off West Coast Of Northern Sumatra Apr 28 05:53 4.4 10 MAP I Felt It
    USGS Vancouver Island, Canada Region Apr 28 03:42 4.5 15 MAP I Felt It
    EMSC Vancouver Island, Canada Region Apr 28 03:42 4.5 16 MAP I Felt It
    EMSC Eastern Turkey Apr 28 03:17 4.7 22 MAP I Felt It
    GEOFON Turkey Apr 28 03:17 4.6 10 MAP I Felt It
    USGS Eastern Turkey Apr 28 03:17 4.7 5 MAP I Felt It
    EMSC Iran-iraq Border Region Apr 28 00:34 3.9 5 MAP I Felt It

    Data sources courtesy : USGSEMSCGFZGEONET

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

    M 4.9      2012/04/27 19:22     Depth 58.2 km      NEW BRITAIN REGION, PAPUA NEW GUINEA


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    I have felt it Ik heb het gevoeld – Το έκανα αισθάνεται – Yo lo he sentido – 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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    Country where you felt the earthquake
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    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) ?
    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).
    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.
    Write your experience below + let us know if your property has been damaged (even slight damage) or if you have knowledge of any damage caused by this earthquake. (max. 500 characters)

    Comments

    1. Heather Bush says:

      7:44pm small tremor for about 5-6 seconds

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