Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-08-2016 and time 13:50:25 (Italy) in region 2 km SE Amatrice (RI)

A magnitude ML 1.6 earthquake occured in region: 2 km SE Amatrice (RI), on

  • 26-08-2016 11:50:25 (UTC)
  • 26-08-2016 13:50:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6130, 13.3040 at 8 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 2 2657 2657
Campotosto AQ 8 542 3199
Capitignano AQ 10 665 3864
Accumoli RI 10 667 4531
Montereale AQ 11 2581 7112
Cittareale RI 12 482 7594
Crognaleto TE 16 1297 8891
Cortino TE 17 656 9547
Arquata del Tronto AP 18 1178 10725
Borbona RI 18 617 11342
Barete AQ 18 737 12079
Cagnano Amiterno AQ 18 1369 13448
Acquasanta Terme AP 20 2916 16364
Posta RI 20 694 17058
Pizzoli AQ 20 4326 21384

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of L'Aquila (69753 inhabitants)
33 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
62 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
93 Km SE of Perugia (166134 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 1.6 2016-08-26
11:50:25		 42.6132 13.3042 8 2019-02-12
13:57:35		 Bollettino Sismico Italiano INGV 42034981
Reviewed
Rev100 		ML 1.4 2016-08-26
11:50:25		 42.6147 13.2963 8 2016-08-26
12:23:11		 Sala Sismica INGV-Roma 27300981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-26 11:50:25 ± 0.05
Latitude 42.6132 ± 0.0027
Longitude 13.3042 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 42034981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 341
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 36
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63852
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 27300981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-08-26 12:23:11

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 42034981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-03-06 12:15:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2016-08-26T11:51:15.99 3.0 undecidable manual S 0.36 0
IV.T0110.HHZ. 2016-08-26T11:50:43.95 0.3 undecidable manual S 138 57.498 50 0.46 64
IV.CSP1.EHZ. 2016-08-26T11:50:42.72 0.3 undecidable manual S 351 53.7018 50 0.24 67
IV.VCEL.EHZ. 2016-08-26T11:50:41.51 0.3 undecidable manual S 119 50.1165 50 -0.01 71
IV.FDMO.HHZ. 2016-08-26T11:50:41.63 0.3 undecidable manual S 339 50.2164 50 0.09 70
IV.FAGN.HHZ. 2016-08-26T11:50:40.26 0.3 undecidable manual S 149 44.8218 50 0.15 69
IV.ASSB.HHZ. 2016-08-26T11:50:37.76 0.6 negative manual P 312 70.8735 50 0 45
IV.T1241.HNZ. 2016-08-26T11:50:35.11 0.6 undecidable manual S 21 28.8489 106 -0.36 46
IV.T0110.HHZ. 2016-08-26T11:50:35.52 0.1 undecidable manual P 138 57.498 50 -0.18 90
IV.NRCA.HHZ. 2016-08-26T11:50:35.13 0.6 undecidable manual S 328 28.9488 106 -0.35 46
IV.GIGS.HHZ. 2016-08-26T11:50:35.05 0.3 undecidable manual S 129 28.2495 106 -0.2 71
IV.FDMO.HHZ. 2016-08-26T11:50:34.34 0.6 negative manual P 339 50.2164 50 -0.23 45
IV.VCEL.EHZ. 2016-08-26T11:50:34.71 0.1 undecidable manual P 119 50.1165 50 0.15 92
IV.CSP1.EHZ. 2016-08-26T11:50:34.85 0.6 negative manual P 351 53.7018 50 -0.26 44
IV.T1212.HNZ. 2016-08-26T11:50:34.10 0.6 undecidable manual S 306 26.1516 107 -0.46 45
IV.FAGN.HHZ. 2016-08-26T11:50:33.91 0.1 undecidable manual P 149 44.8218 50 0.17 92
IV.TERO.HHZ. 2016-08-26T11:50:33.60 0.3 undecidable manual S 87 24.4533 109 -0.41 68
IV.ARRO.EHZ. 2016-08-26T11:50:33.52 0.1 undecidable manual P 265 44.1225 50 -0.12 93
IV.LNSS.HHZ. 2016-08-26T11:50:32.97 0.3 undecidable manual S 267 21.5673 111 -0.09 73
IV.T1214.HNZ. 2016-08-26T11:50:32.07 0.3 undecidable manual S 334 17.9709 114 0.16 73
IV.T1243.HNZ. 2016-08-26T11:50:31.07 0.3 undecidable manual S 52 14.9739 119 0.1 74
IV.T1218.EHZ. 2016-08-26T11:50:31.39 0.6 undecidable manual S 292 16.6722 116 -0.1 49
IV.GIGS.HHZ. 2016-08-26T11:50:30.57 0.1 undecidable manual P 129 28.2495 106 -0.37 91
IV.T1212.HNZ. 2016-08-26T11:50:30.04 0.1 undecidable manual P 306 26.1516 107 -0.5 89
IV.T1241.HNZ. 2016-08-26T11:50:30.73 0.1 undecidable manual P 21 28.8489 106 -0.33 92
IV.CAMP.HHZ. 2016-08-26T11:50:30.15 0.3 undecidable manual S 135 12.0768 124 0.02 75
IV.TERO.HHZ. 2016-08-26T11:50:30.04 0.1 undecidable manual P 87 24.4533 109 -0.18 95
IV.RM33.EHZ. 2016-08-26T11:50:30.33 0.3 undecidable manual S 212 13.6752 121 -0.25 72
IV.T1242.HNZ. 2016-08-26T11:50:30.88 0.3 undecidable manual P 341 25.3524 108 0.5 67
IV.NRCA.HHZ. 2016-08-26T11:50:30.63 0.3 undecidable manual P 328 28.9488 106 -0.44 67
IV.T1201.HNZ. 2016-08-26T11:50:29.02 0.3 undecidable manual S 318 6.5934 141 0.33 71
IV.T1204.EHZ. 2016-08-26T11:50:29.10 0.3 undecidable manual S 8 7.0929 139 0.3 72
IV.LNSS.HHZ. 2016-08-26T11:50:29.93 0.1 undecidable manual P 267 21.5673 111 0.26 94
IV.T1218.EHZ. 2016-08-26T11:50:29.08 0.3 undecidable manual P 292 16.6722 116 0.31 71
IV.T1214.HNZ. 2016-08-26T11:50:28.66 0.1 undecidable manual P 334 17.9709 114 -0.35 93
IV.RM33.EHZ. 2016-08-26T11:50:28.28 0.1 undecidable manual P 212 13.6752 121 0.04 100
IV.T1243.HNZ. 2016-08-26T11:50:28.71 0.1 undecidable manual P 52 14.9739 119 0.25 96
IV.T1202.EHZ. 2016-08-26T11:50:28.17 0.1 undecidable manual P 327 11.9769 124 0.22 97
IV.CAMP.HHZ. 2016-08-26T11:50:28.13 0.1 negative manual P 135 12.0768 124 0.15 98
IV.T1201.HNZ. 2016-08-26T11:50:27.52 0.3 undecidable manual P 318 6.5934 141 0.37 71
IV.T1204.EHZ. 2016-08-26T11:50:27.57 0.1 undecidable manual P 8 7.0929 139 0.36 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:1.6 0.0005064999999999999 0.56 AML other m 2016-08-26T11:50:30.29
IV.CAMP.HHN. ML:1.5 0.000356 0.24 AML other m 2016-08-26T11:50:31.27
IV.FAGN.HHE. ML:1.6 0.000128 0.26 AML other m 2016-08-26T11:50:44.74
IV.FAGN.HHN. ML:1.5 0.000096 0.48 AML other m 2016-08-26T11:50:46.77
IV.FDMO.HHN. ML:1.4 0.000059300000000000005 0.98 AML other m 2016-08-26T11:51:30.81
IV.FDMO.HHE. ML:1.3 0.00005615 0.3 AML other m 2016-08-26T11:51:30.78
IV.LNSS.HHE. ML:1.6 0.0003175 0.46 AML other m 2016-08-26T11:50:33.57
IV.LNSS.HHN. ML:1.6 0.00029200000000000005 1.54 AML other m 2016-08-26T11:50:34.88
IV.T1243.HHN. ML:1.9 0.0007669999999999999 0.56 AML other m 2016-08-26T11:50:31.44
IV.T1243.HHE. ML:1.7 0.0005729999999999999 0.32 AML other m 2016-08-26T11:50:31.57
IV.VCEL.EHN. ML:1.5 0.00008245 1.48 AML other m 2016-08-26T11:50:43.13
IV.VCEL.EHE. ML:1.6 0.00009889999999999999 0.32 AML other m 2016-08-26T11:50:44.09
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
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