Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 24-08-2016 and time 05:03:35 (UTC) in region 4 km SW Amatrice (RI)

A magnitude ML 2.3 earthquake occured in region: 4 km SW Amatrice (RI), on

  • 24-08-2016 05:03:35 (UTC)
  • 24-08-2016 07:03:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5990, 13.2740 at 17 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 4 2657 2657
Montereale AQ 9 2581 5238
Capitignano AQ 9 665 5903
Campotosto AQ 9 542 6445
Cittareale RI 10 482 6927
Accumoli RI 11 667 7594
Borbona RI 15 617 8211
Cagnano Amiterno AQ 16 1369 9580
Barete AQ 16 737 10317
Posta RI 17 694 11011
Crognaleto TE 18 1297 12308
Pizzoli AQ 18 4326 16634
Cortino TE 19 656 17290
Arquata del Tronto AP 20 1178 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
78 Km W of Chieti (51815 inhabitants)
79 Km W of Pescara (121014 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
98 Km E of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.3 2016-08-24
05:03:35		 42.5988 13.2735 17 2016-10-06
10:12:08		 Bollettino Sismico Italiano INGV 29374881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-24 05:03:35 ± 0.1
Latitude 42.5988 ± 0.0054
Longitude 13.2735 ± 0.0061
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 29374881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 591
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 15
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.90832
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 29374881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2016-09-28 09:18:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MGAB.HHZ. 2016-08-24T05:03:53.17 0.6 undecidable manual P 291 100.8213 94 0.89 34
IV.CSP1.EHZ. 2016-08-24T05:03:52.38 0.6 undecidable manual S 354 55.0005 98 -0.15 46
IV.CESX.HHZ. 2016-08-24T05:03:52.41 0.3 undecidable manual S 271 56.0994 97 -0.41 66
IV.GUMA.HHZ. 2016-08-24T05:03:51.86 0.3 undecidable manual S 6 51.7038 98 0.19 71
IV.FEMA.HNZ. 2016-08-24T05:03:49.19 0.3 undecidable manual S 336 44.2224 100 -0.5 65
IV.ARRO.EHZ. 2016-08-24T05:03:48.71 0.3 undecidable manual S 267 41.5251 101 -0.28 70
IV.TERO.HNZ. 2016-08-24T05:03:45.07 0.3 undecidable manual S 84 27.1506 110 -0.19 72
IV.GIGS.HHZ. 2016-08-24T05:03:45.42 0.1 undecidable manual S 123 29.3484 108 -0.4 92
IV.CESX.HHZ. 2016-08-24T05:03:45.46 0.6 undecidable manual P 271 56.0994 97 0.04 48
IV.FEMA.HNZ. 2016-08-24T05:03:44.09 0.3 undecidable manual P 336 44.2224 100 0.48 67
IV.CSP1.EHZ. 2016-08-24T05:03:44.91 0.3 undecidable manual P 354 55.0005 98 -0.34 67
IV.GUMA.HHZ. 2016-08-24T05:03:44.84 0.6 undecidable manual P 6 51.7038 98 0.09 48
IV.OFFI.HHZ. 2016-08-24T05:03:44.73 0.3 undecidable manual P 42 50.2164 98 0.21 70
IV.FAGN.HHZ. 2016-08-24T05:03:43.46 0.6 undecidable manual P 145 44.8218 100 -0.24 47
IV.ARRO.EHZ. 2016-08-24T05:03:43.32 0.3 undecidable manual P 267 41.5251 101 0.12 72
IV.FIAM.HHZ. 2016-08-24T05:03:43.13 0.3 undecidable manual P 199 38.8278 102 0.33 69
IV.CAMP.HHZ. 2016-08-24T05:03:42.20 0.6 undecidable manual S 122 13.0758 134 0.16 51
MN.AQU.HHZ. 2016-08-24T05:03:41.11 0.6 undecidable manual P 158 29.2485 108 -0.25 48
IV.TERO.HNZ. 2016-08-24T05:03:41.30 0.6 undecidable manual P 84 27.1506 110 0.25 48
IV.RM33.EHZ. 2016-08-24T05:03:41.56 0.3 undecidable manual S 206 11.0778 140 -0.11 76
IV.GIGS.HHZ. 2016-08-24T05:03:41.38 0.6 undecidable manual P 123 29.3484 108 0 50
IV.CAMP.HHZ. 2016-08-24T05:03:39.63 0.6 undecidable manual P 122 13.0758 134 0.44 48
IV.RM33.EHZ. 2016-08-24T05:03:39.19 0.1 positive manual P 206 11.0778 140 0.21 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.2 0.0005246872 1.3184 AML other m 2016-08-24T05:03:49.93
IV.GIGS.HHE. ML:1.8 0.00028435405 1.2192 AML other m 2016-08-24T05:03:46.56
IV.RM33.EHE. ML:3.0 0.0093746525 0.64 AML other m 2016-08-24T05:03:42.01
IV.TERO.HHN. ML:2.4 0.0013879575 0.2784 AML other m 2016-08-24T05:03:45.38
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download