Damaging earthquake below Ischia, Naples, Italy - 2 people killed - August 21, 2017

Damage report in cooperation with the 2017 Earthquake Impact Database - EID on Google Docs

Update Saturday August 26 - 14:54 UTC: Drone footage shows destruction in Ischia, Italy, that killed 2 people.
Via David Bressan


 

Update 13:25 UTC: Historic earthquakes on the island of #Ischia (red-yellow dots) and damage of recent quake (grey lines)
Via David Bressan (@David_Bressan) and Steven Hicks (@Seismo_Steve)

Screen Shot 2017-08-23 at 14.24.11

Update 09:52 UTC: The map below shows the strength of the acceleration which is very unusual and spectacular for a M4.3 earthquake. However, historic similar earthquakes have shown that this happened in the past too!

Screen Shot 2017-08-23 at 11.52.40

Update Wednesday 09:51 UTC: the number of injured is now 42.


 

Update 12:53 UTC: 2600 people have been displaced for different reasons

Update 08:26 UTC: The fault line responsible for the deadly Ischia earthquake
Via Claudio Satriano (@claudiodsf)

Screen Shot 2017-08-22 at 10.26.12

Update 08:23 UTC: Destructive 1881 (I max IX) and 1883 (I max X - 2300 dead) earthquakes were shallow, with localized damages & rapid attenuation.

Screen Shot 2017-08-22 at 10.22.07

Screen Shot 2017-08-22 at 10.22.30

Update 08:19 UTC: intensity distribution for the 1881 earthquake (2,300 fatalities!!!!), similar M to the yesterday's one M4

Screen Shot 2017-08-22 at 10.20.28

Update 08:18 UTC: Shaking map with possible related damage from the natural disaster specialists at CATnews (Risklayer - CEDIM), Karlsruhe, Germany. Map generated by Andreas Schäfer.

Screen Shot 2017-08-22 at 10.18.02

Update 07:46 UTC: New numbers : 2 fatalities and 39 people injured.

Update 07:39 UTC: A 7 months old baby was alive and kicking rescued from below the rubble.

Screen Shot 2017-08-22 at 09.35.55


 

Update 23:22 UTC: La Repubblica has decreased the number of fatalities again from 2 to 1

Update 22:10 UTC: The Italian newspaper La Repubblica now reports a second fatality :(( - Seven people are still missing

Update 22:07 UTC: The number of injuries has increased from 25 to 30

Update 22:01 UTC: The village of Casamicciola was at the Northern part of the island was the hardest hit.

Screen Shot 2017-08-22 at 00.01.03

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Update 21:58 UTC: 2 short video's from the damage

Update 21:36 UTC: Very bad news! We are sad to report that 1 person has been killed and 25 others injured during this earthquake. 20 houses collapsed and another 100 were damaged to various extend. 100 people have been displaced due to the damage to their houses.

Update 21:33 UTC: Yet another disturbing picture of the damage. Piles of stones and let's hope that nobody is buried underneath. The bad news is that some people are still missing.

Screen Shot 2017-08-21 at 23.33.16

Update 21:24 UTC: One of the collapsed houses. SAR services are currently digging in the rubble to find eventual buried people.

Screen Shot 2017-08-21 at 23.15.12

Screen Shot 2017-08-21 at 23.26.30

Update 21:22 UTC: The actual Magnitude was not M3.7 but M4.3, but even at this magnitude earthquakes generate very seldom damage.

Screen Shot 2017-08-21 at 23.14.17-compressed

Update 21:19 UTC: To our great surprise a moderate earthquake near Ischia, Italy had very damaging consequences. Main reason, the extremely shallow hypocenter beneath the small island.

Screen Shot 2017-08-21 at 23.16.06

Map courtesy Alomax.free.net - Star: calculated epicenter - Small red dots: possible error margin for the epicenter, the more dense, the higher probability that the epicenter will be in that area. Orange circle: epicenter location error zone

175 km SE of Roma, Italy / pop: 2,564,000 / local time: 20:57:50.6 2017-08-21
39 km SW of Napoli, Italy / pop: 989,000 / local time: 20:57:50.6 2017-08-21
11 km SW of Ischia Porto, Italy / pop: 18,200 / local time: 20:57:50.6 2017-08-21

Most important Earthquake Data:

Magnitude : 4.3

Local Time (conversion only below land) : 2017-08-21 20:57:51

GMT/UTC Time : 2017-08-21 18:57:51

Depth (Hypocenter) : 10 km

Depth and Magnitude updates in the list below.

Donation - long - San Francisco

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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
GEOFON Tyrrhenian Sea Aug 21 18:57 3.8 5 MAP I Felt It
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  • USGS Monte Di Procida, Italy Aug 21 18:57 4.2 9 MAP I Felt It
    EMSC Tyrrhenian Sea Aug 21 18:57 4.3 10 MAP I Felt It INFO


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    Latitude (area) where you felt the earthquake
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    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) ?
    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.
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