Tonga earthquake list

Last update: April 28, 2012 at 2:48 pm by By

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The list below shows the last earthquakes in Tonga

In depth articles on Tonga earthquakes written by Earthquake-Report.com
- soon to come if any

Label info : M = magnitude, D = depth (km), Time = UTC – Tonga time = UTC +12
SRC Location UTC Date/time M D INFO
EMSC Tonga Sep 15 19:30 4.9 289 MAP I Felt It INFO
GEOFON Tonga Islands Sep 15 19:30 4.5 304 MAP I Felt It INFO
EMSC Tonga Sep 14 18:17 5.7 50 MAP I Felt It
USGS `ohonua, Tonga Sep 14 18:17 5.0 48 MAP I Felt It
GEOFON Tonga Islands Sep 14 18:17 5.7 59 MAP I Felt It INFO
USGS Neiafu, Tonga Sep 13 18:22 5.4 10 MAP I Felt It
GEOFON Tonga Islands Sep 13 18:22 5.4 10 MAP I Felt It
EMSC Tonga Region Sep 13 18:22 5.2 2 MAP I Felt It INFO
USGS Neiafu, Tonga Sep 09 18:45 4.9 38 MAP I Felt It INFO
EMSC Tonga Region Sep 09 18:45 5.0 2 MAP I Felt It
GEOFON Tonga Islands Region Sep 09 18:45 4.9 10 MAP I Felt It INFO
USGS Neiafu, Tonga Sep 06 20:41 4.8 21 MAP I Felt It INFO
GEOFON Tonga Islands Region Sep 06 20:41 4.9 14 MAP I Felt It
EMSC Tonga Region Sep 06 20:41 4.8 15 MAP I Felt It INFO
GEOFON Tonga Islands Sep 04 17:11 4.9 123 MAP I Felt It INFO
USGS Nuku`alofa, Tonga Sep 04 17:10 4.8 47 MAP I Felt It INFO
EMSC Tonga Sep 04 05:33 6.0 4 MAP I Felt It
USGS `ohonua, Tonga Sep 04 05:33 6.0 11 MAP I Felt It
GEOFON Tonga Islands Sep 04 05:33 6.0 10 MAP I Felt It INFO
USGS Hihifo, Tonga Sep 03 11:34 5.0 10 MAP I Felt It
GEOFON Tonga Islands Sep 03 08:13 5.4 10 MAP I Felt It
USGS Hihifo, Tonga Sep 03 08:13 4.9 10 MAP I Felt It INFO
EMSC Tonga Sep 03 08:13 4.7 10 MAP I Felt It
USGS Hihifo, Tonga Sep 03 07:43 5.7 10 MAP I Felt It
GEOFON Tonga Islands Sep 03 07:43 5.8 10 MAP I Felt It INFO
USGS Hihifo, Tonga Sep 03 07:23 4.7 10 MAP I Felt It
EMSC Tonga Sep 03 07:23 4.8 2 MAP I Felt It
GEOFON Tonga Islands Sep 03 07:23 4.9 10 MAP I Felt It
USGS South Of Tonga Sep 01 04:24 5.2 10 MAP I Felt It
GEOFON South Of Tonga Islands Sep 01 04:24 5.4 10 MAP I Felt It INFO
EMSC South Of Tonga Sep 01 04:24 5.4 10 MAP I Felt It
GEOFON Tonga Islands Aug 31 18:51 4.8 59 MAP I Felt It INFO
EMSC Tonga Aug 31 18:51 4.8 10 MAP I Felt It
USGS Neiafu, Tonga Aug 31 18:51 4.8 35 MAP I Felt It INFO
USGS Hihifo, Tonga Aug 26 09:30 5.6 10 MAP I Felt It
GEOFON Tonga Islands Aug 25 22:47 4.4 221 MAP I Felt It INFO
GEOFON Tonga Islands Aug 25 11:56 4.8 89 MAP I Felt It INFO
USGS Hihifo, Tonga Aug 25 11:56 4.7 10 MAP I Felt It INFO
EMSC Tonga Aug 25 11:56 4.7 5 MAP I Felt It INFO
USGS Neiafu, Tonga Aug 21 09:01 5.0 10 MAP I Felt It INFO
GEOFON Tonga Islands Region Aug 21 09:00 5.2 10 MAP I Felt It
EMSC Tonga Region Aug 21 09:00 5.0 2 MAP I Felt It INFO
USGS Hihifo, Tonga Aug 16 02:37 4.5 46 MAP I Felt It INFO
EMSC Tonga Region Aug 16 02:37 4.8 10 MAP I Felt It INFO
GEOFON Tonga Islands Region Aug 16 02:37 4.8 10 MAP I Felt It INFO
EMSC Tonga Aug 15 18:05 4.8 10 MAP I Felt It INFO
GEOFON Tonga Islands Aug 15 18:05 4.8 10 MAP I Felt It INFO
USGS Hihifo, Tonga Aug 15 18:05 4.8 2 MAP I Felt It INFO
EMSC Tonga Aug 12 16:16 4.9 10 MAP I Felt It INFO
GEOFON Tonga Islands Aug 12 16:16 4.9 10 MAP I Felt It INFO

Data sources courtesy : USGSEMSCGFZGEONET

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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.
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