Very strong harmless earthquake at 100 km of Ifalik atoll, Micronesia

Last update: May 15, 2014 at 9:06 am by By

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Update 08:59 UTC : The image below shows a clear strike slip Focal Mechanism. The ground movement will have been a  mainly horizontal movement.

Screen Shot 2014-05-15 at 10.51.01

Update 08:51 UTC :
NO Population near epicenter which means that also the shaking will be limited on Ifalik
100 km     no people, 75 km     no people, 50 km     no people, 20 km     no people, 10 km     no people, 5 km     no people, 2 km     no people
(source GDACS)

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Screen Shot 2014-05-15 at 10.44.19 Screen Shot 2014-05-15 at 10.44.32

Update 08:46 UTC :  Micronesia does not show up in our “deadly historic earthquakes list“. The atolls are however very vulnerable for tsunamis if they would strike here (see video)

Update 08:41 UTC : Our bottom historic earthquakes map below shows both earthquakes (mainshock and aftershock).

Update 08:41 UTC : USGS who initially reported 2 very strong aftershocks has deleted one. NO tsunami danger (mainly for 2 reasons a) too weak in Magnitude b) this area is NOT a subduction area)

Update 08:30 UTC : Both aftershocks have struck at about the same location than the mainshock from yesterday
102km (63mi) SE of Ifalik, Micronesia
733km (455mi) W of Weno, Micronesia
751km (467mi) W of Weno – Chuuk State Legislature, Micronesia
751km (467mi) W of Weno Town, Micronesia
761km (473mi) S of Hagatna, Guam

May 15 08:28 UTC : 2 VERY STRONG aftershocks in Micronesia. The lapse between the 2 was only 1 minute.


Update 21:36 UTC : There are no signs of any historic stronger earthquake in the greater epicenter area. The Ocean floor shows however a big scar from some seismic action. The map below shows the other earthquakes in this area.

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Update 21:20 UTC : USGS has just lowered the Magnitude to M6.1 at a depth of 10 km, which means a whole lot of shaking less. NO tsunami risk. The video below shows the Islands. Is is a cruise boat visit and we have to take the tourists for granted :). The reason we have inserted this video is to show our readers that a tsunami wave on such an atoll would be devastating. No higher place to hide. The wooden houses are however very earthquake resistant as we now it from other earthquakes.

Update 21:19 UTC : Ifalik (also spelled Ifaluk) is a coral atoll of four islands in the central Caroline Islands in the Pacific Ocean, and forms a legislative district in Yap State in the Federated States of Micronesia. Ifalik is located approximately 40 kilometres (25 mi) east of Woleai and 700 kilometres (430 mi) southeast of the island of Yap. The population of Ifalik was 561 in 2000,[1] living on 1.5 km2. The primary islets of Ifalik are called Ella, Elangelap, Rawaii, and Falalop, which is the atoll’s main island.[2] (source Wikipedia)
+ Some geography and history : Ifalik is known as a “warrior island”. Prior to European contact, its warriors invaded the outer islands in Yap as well as some of the outer islands in Chuuk. Atolls under the attack included, Lamotrek, Faraulep, Woleai, Elato, Satawal, Ulithi, and Poluwat (outer islet of Chuuk). As with all of the Caroline Islands, sovereignty passed to the Empire of Germany in 1899. The island came under the control of the Empire of Japan after World War I, and was subsequently administered under the South Pacific Mandate. Following World War II, the island came under the control of the United States of America and was administered as part of the Trust Territory of the Pacific Islands from 1947, and became part of the Federated States of Micronesia from 1979.

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102km (63mi) SE of Ifalik, Micronesia
733km (455mi) W of Weno, Micronesia
751km (467mi) W of Weno – Chuuk State Legislature, Micronesia
751km (467mi) W of Weno Town, Micronesia
761km (473mi) S of Hagatna, Guam

Most important Earthquake Data:

Magnitude : 6.1

Local Time (conversion only below land) : 2014-05-15 06:56:14

GMT/UTC Time : 2014-05-14 20:56:14

Depth (Hypocenter) : 10 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 Federated States Of Micronesia Region May 14 21:03 6.5 16 MAP I Felt It
EMSC State Of Yap, Micronesia May 14 20:56 6.1 3 MAP I Felt It
USGS Ifalik, Micronesia May 14 20:56 6.5 16 MAP I Felt It
GEOFON E. Caroline Islands, Micronesia May 14 20:56 6.1 10 MAP I Felt It INFO
USGS Ifalik, Micronesia May 14 20:56 6.1 10 MAP I Felt It
WCATWC E. Caroline Islands Micronesia May 14 20:56 6.5 16 MAP I Felt It


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