Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-08-2016 and time 13:14:34 (Italy) in region 4 km S Amatrice (RI)

A magnitude ML 1.6 earthquake occured in region: 4 km S Amatrice (RI), on

  • 26-08-2016 11:14:34 (UTC)
  • 26-08-2016 13:14:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5990, 13.3000 at 10 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
Campotosto AQ 7 542 3199
Capitignano AQ 9 665 3864
Montereale AQ 9 2581 6445
Accumoli RI 12 667 7112
Cittareale RI 12 482 7594
Crognaleto TE 16 1297 8891
Barete AQ 16 737 9628
Cagnano Amiterno AQ 17 1369 10997
Borbona RI 17 617 11614
Cortino TE 17 656 12270
Pizzoli AQ 18 4326 16596
Posta RI 19 694 17290
Arquata del Tronto AP 19 1178 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Chieti (51815 inhabitants)
76 Km W of Pescara (121014 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
93 Km SE of Perugia (166134 inhabitants)
100 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 1.6 2016-08-26
11:14:34		 42.599 13.3 10 2019-02-12
13:57:33		 Bollettino Sismico Italiano INGV 41415861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-26 11:14:34 ± 0.07
Latitude 42.5990 ± 0.0045
Longitude 13.3000 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 41415861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 385
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 180
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.49732
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 41415861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-02-21 09:03:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VBKN.HHZ. 2016-08-26T11:15:06.45 3.0 positive manual Pn -0.15 0
IV.CSP1.EHZ. 2016-08-26T11:14:52.94 0.3 undecidable manual S 352 55.2003 50 0.48 65
IV.MC2.EHZ. 2016-08-26T11:14:47.64 0.6 undecidable manual S 345 35.8419 50 0.36 46
IV.MMO1.EHN. 2016-08-26T11:14:46.39 0.6 undecidable manual S 4 33.3444 50 -0.25 47
IV.CSP1.EHZ. 2016-08-26T11:14:45.10 0.3 undecidable manual P 352 55.2003 50 0.03 72
IV.NRCA.HHZ. 2016-08-26T11:14:45.50 0.6 undecidable manual S 330 30.1476 50 -0.26 48
IV.TERO.HHZ. 2016-08-26T11:14:44.01 0.3 undecidable manual S 84 24.9528 111 -0.26 72
IV.GIGS.HHZ. 2016-08-26T11:14:44.85 0.3 undecidable manual S 126 27.5502 50 -0.23 72
IV.OFFI.HHE. 2016-08-26T11:14:44.52 0.6 undecidable manual P 40 48.7179 50 0.45 44
IV.LNSS.HHZ. 2016-08-26T11:14:42.82 0.3 undecidable manual S 271 21.1677 115 -0.25 73
IV.NRCA.HHZ. 2016-08-26T11:14:41.60 0.3 undecidable manual P 330 30.1476 50 0.4 69
IV.MMO1.EHN. 2016-08-26T11:14:41.23 0.1 undecidable manual P 4 33.3444 50 -0.48 90
IV.MC2.EHZ. 2016-08-26T11:14:41.96 0.6 undecidable manual P 345 35.8419 50 -0.12 48
IV.T1243.HHZ. 2016-08-26T11:14:41.58 0.3 undecidable manual S 48 16.2726 121 0.03 77
IV.CAMP.HHZ. 2016-08-26T11:14:40.37 0.3 undecidable manual S 128 11.3775 131 0.21 74
IV.RM33.EHZ. 2016-08-26T11:14:40.41 0.3 undecidable manual S 215 12.1767 129 0.02 77
IV.TERO.HHZ. 2016-08-26T11:14:40.19 0.1 undecidable manual P 84 24.9528 111 -0.15 98
IV.GIGS.HHZ. 2016-08-26T11:14:40.83 0.3 undecidable manual P 126 27.5502 50 0.02 75
IV.LNSS.HHZ. 2016-08-26T11:14:39.49 0.1 undecidable manual P 271 21.1677 115 -0.16 99
IV.T1243.HHZ. 2016-08-26T11:14:38.77 0.3 undecidable manual P 48 16.2726 121 0 77
IV.CAMP.HHZ. 2016-08-26T11:14:38.27 0.3 undecidable manual P 128 11.3775 131 0.3 73
IV.RM33.EHZ. 2016-08-26T11:14:38.27 0.1 positive manual P 215 12.1767 129 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:1.2 0.00018248878 0.2368 AML other m 2016-08-26T11:14:40.58
IV.CAMP.HHN. ML:1.3 0.00023088025000000002 0.3392 AML other m 2016-08-26T11:14:40.63
IV.LNSS.HHN. ML:1.4 0.00016129215000000002 0.3392 AML other m 2016-08-26T11:14:43.38
IV.LNSS.HHE. ML:1.5 0.00022727385 0.2368 AML other m 2016-08-26T11:14:42.94
IV.RM33.HNE. ML:1.7 0.000554219 0.7488 AML other m 2016-08-26T11:14:40.64
IV.RM33.EHE. ML:1.6 0.000520239 0.7424 AML other m 2016-08-26T11:14:40.64
IV.RM33.EHN. ML:1.6 0.0005342536500000001 0.3008 AML other m 2016-08-26T11:14:40.48
IV.RM33.HNN. ML:1.7 0.0006386060950000001 0.704 AML other m 2016-08-26T11:14:40.98
IV.TERO.HHN. ML:1.6 0.00025785365000000006 0.0768 AML other m 2016-08-26T11:14:44.56
IV.TERO.HHE. ML:1.7 0.00030662495 0.16 AML other m 2016-08-26T11:14:44.87
IV.TERO.HNE. ML:1.6 0.00026702635 0.16 AML other m 2016-08-26T11:14:44.87
IV.TERO.HNN. ML:1.6 0.00022378924999999999 0.096 AML other m 2016-08-26T11:14:44.56
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
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