Massive (but luckily deep) earthquake off the coast of the Russian Kuril Islands

Last update: April 19, 2013 at 10:18 pm by By

Update 22:19 UTC : Aftershock of M6.2 at 19:58 is also harmless because far out in the sea

Update 12:07 UTC : A 20 cm tsunami wave did hit the Sakhalin coast, harmless of course. Strong currents can always be expected after such a powerful earthquake.

Based on the theoretical calculations of USGS approx. 2000 people will have felt a moderate shaking and 2000 a light shaking
Our second map below shows the epicenter area as a location which gets regular very strong to massive earthquakes.
USGS reported a depth of 122 km and EMSC 100 km. Far too deep to generate a tsunami at this Magnitude.

Screen Shot 2013-04-19 at 08.48.30

The depth of the hypocenter is the main reason that this earthquake was felt as far as Tokyo, 1500 km away from the epicenter. More or less similar than the Iran/Pakistan M7.8 earthquake who happened earlier this week. The depth of that earthquake was 82 km.
The hypocenter or focal depth of these earthquakes are occurring in the hot solid mantle of the earth.
Intermediate to deep depths are seriously weakening the shaking impact earthquakes.

Screen Shot 2013-04-19 at 08.48.57

250km (155mi) ENE of Kuril’sk, Russia
521km (324mi) NE of Nemuro, Japan
527km (327mi) NE of Shibetsu, Japan
566km (352mi) ENE of Abashiri, Japan
1490km (926mi) NE of Tokyo, Japan

Most important Earthquake Data:

Magnitude : 7.2

Local Time (conversion only below land) : Unknown

GMT/UTC Time : 2013-04-19 03:05:52

Depth (Hypocenter)  : 101 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
PTWC Kuril Islands Apr 19 03:17 7.0 10 MAP I Felt It
EMSC Kuril Islands Apr 19 03:15 5.7 120 MAP I Felt It
USGS Kuril Islands Apr 19 03:15 5.7 120 MAP I Felt It
WCATWC Kuril Islands Apr 19 03:06 7.0 9 MAP I Felt It
USGS Kuril Islands Apr 19 03:05 7.2 122 MAP I Felt It
GEOFON Kuril Islands Apr 19 03:05 7.2 101 MAP I Felt It INFO
  • Tokyo, Japan - I was at my computer and started to feel a light shaking. Hanging objects were also swaying in my room. If I were walking or standing outside, I don't think I would have noticed it.
  • Tokyo - On the 20th floor in Toshima-ku. Horizontal swaying for 30 seconds or so. Hanging lights moved pretty good but probably would not have felt anything on the ground.
  • USGS Kuril Islands Apr 19 03:05 7.0 10 MAP I Felt It
    EMSC Kuril Islands Apr 19 03:05 7.2 100 MAP I Felt It


    Fast EARTHQUAKE and TSUNAMI TWEETS @ your MAGNITUDE choice
    Regional Twitter Accounts CHILI - CANADA - BRITISH COLUMBIA - CALIFORNIA - OREGON - WASHINGTON - HAWAII - TEXAS - OKLAHOMA

     

    Other earlier earthquakes in the greater epicenter area (since 2012)

    Strongest earthquakes Magnitude 3.5 or more within a 150 km radius from this earthquake (max. 60)

     

     

    SHARE YOUR EARTHQUAKE EXPERIENCE WITH US

    Enter Email (not compulsory)
    Country where you felt the earthquake
    City/Village where you felt the earthquake
    Street or suburb (area) where you felt the earthquake
    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)

    Desktop Version