Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 24-09-2016 and time 19:00:54 (UTC) in region 4 km S Accumoli (RI)

A magnitude ML 1.7 earthquake occured in region: 4 km S Accumoli (RI), on

  • 24-09-2016 19:00:54 (UTC)
  • 24-09-2016 21:00:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6560, 13.2460 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Accumoli RI 4 667 667
Amatrice RI 5 2657 3324
Cittareale RI 8 482 3806
Arquata del Tronto AP 14 1178 4984
Montereale AQ 15 2581 7565
Campotosto AQ 15 542 8107
Capitignano AQ 16 665 8772
Borbona RI 18 617 9389
Acquasanta Terme AP 19 2916 12305
Posta RI 19 694 12999
Norcia PG 20 4957 17956

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NW of L'Aquila (69753 inhabitants)
38 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
76 Km W of Montesilvano (53738 inhabitants)
82 Km W of Pescara (121014 inhabitants)
83 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
97 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
Reviewed
Rev100 		ML 1.7 2016-09-24
19:00:54		 42.6558 13.246 12 2016-09-24
19:07:12		 Sala Sismica INGV-Roma 29485111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-24 19:00:54 ± 0.04
Latitude 42.6558 ± 0.0018
Longitude 13.2460 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 29485111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 13
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.43707
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 29485111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-24 19:07:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERT.HHZ. 2016-09-24T19:01:20.99 3.0 undecidable manual S -0.69 0
IV.EL6.EHZ. 2016-09-24T19:01:18.99 3.0 undecidable manual S -0.03 0
IV.CSP1.EHZ. 2016-09-24T19:01:10.34 0.3 undecidable manual S 356 48.5181 92 0.43 65
IV.PP3.EHZ. 2016-09-24T19:01:10.73 3.0 negative manual P 0.9 0
IV.T1216.EHZ. 2016-09-24T19:01:05.99 3.0 undecidable manual S -0.43 0
IV.MMO1.EHZ. 2016-09-24T19:01:04.46 0.3 undecidable manual S 14 27.8499 95 0.05 73
IV.TERO.HHZ. 2016-09-24T19:01:04.53 0.3 undecidable manual S 97 29.4483 94 -0.31 69
IV.T1241.HHZ. 2016-09-24T19:01:03.91 0.3 undecidable manual S 34 26.8509 95 -0.25 70
IV.GUMA.HHZ. 2016-09-24T19:01:03.34 0.1 undecidable manual P 9 45.7209 92 0.36 89
IV.CSP1.EHZ. 2016-09-24T19:01:03.38 0.1 undecidable manual P 356 48.5181 92 -0.03 94
IV.T1217.EHZ. 2016-09-24T19:01:03.73 0.3 undecidable manual S 284 26.3514 95 -0.31 69
IV.T1242.HHZ. 2016-09-24T19:01:02.21 0.3 undecidable manual S 350 19.5693 100 0 74
IV.FDMO.HHZ. 2016-09-24T19:01:02.62 0.1 undecidable manual P 343 44.1225 92 -0.13 93
IV.NRCA.HNZ. 2016-09-24T19:01:02.63 0.3 undecidable manual S 331 22.4553 97 -0.35 69
IV.LNSS.HHZ. 2016-09-24T19:01:01.70 0.3 undecidable manual S 251 17.7711 103 -0.05 74
IV.CAMP.HHZ. 2016-09-24T19:01:01.99 0.3 undecidable manual S 135 18.87 101 -0.04 74
IV.T1243.HHZ. 2016-09-24T19:01:01.56 0.3 undecidable manual S 75 17.0718 104 -0.02 74
IV.RM33.EHZ. 2016-09-24T19:01:01.42 0.3 undecidable manual S 189 16.4724 106 0 75
IV.T1215.EHZ. 2016-09-24T19:01:01.16 0.1 undecidable manual P 298 34.743 93 -0.14 94
IV.TERO.HHZ. 2016-09-24T19:01:00.36 0.1 undecidable manual P 97 29.4483 94 -0.12 96
IV.MC2.EHZ. 2016-09-24T19:01:00.44 0.1 undecidable manual P 351 28.749 94 0.07 97
IV.T1241.HHZ. 2016-09-24T19:01:00.03 0.1 undecidable manual P 34 26.8509 95 -0.05 97
IV.MMO1.EHZ. 2016-09-24T19:01:00.21 0.1 undecidable manual P 14 27.8499 95 -0.02 98
IV.NRCA.HNZ. 2016-09-24T19:00:59.37 0.1 undecidable manual P 331 22.4553 97 -0.04 98
IV.T1202.EHZ. 2016-09-24T19:00:59.14 0.3 undecidable manual S 342 5.5944 149 0.05 77
IV.T1217.EHZ. 2016-09-24T19:00:59.95 0.1 undecidable manual P 284 26.3514 95 -0.06 97
IV.T1242.HHZ. 2016-09-24T19:00:59.07 0.1 undecidable manual P 350 19.5693 100 0.11 98
IV.T1243.HHZ. 2016-09-24T19:00:58.61 0.1 undecidable manual P 75 17.0718 104 0.01 100
IV.RM33.EHZ. 2016-09-24T19:00:58.75 0.1 undecidable manual P 189 16.4724 106 0.25 95
IV.LNSS.HHZ. 2016-09-24T19:00:58.76 0.1 undecidable manual P 251 17.7711 103 0.06 99
IV.CAMP.HHZ. 2016-09-24T19:00:58.98 0.1 undecidable manual P 135 18.87 101 0.12 98
IV.T1202.EHZ. 2016-09-24T19:00:57.40 0.1 undecidable manual P 342 5.5944 149 0.24 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHE. ML:0.9 0.0000572 0.64 AML other m 2016-09-24T19:01:02.50
IV.CAMP.HHN. ML:1.0 0.000063 0.46 AML other m 2016-09-24T19:01:03.50
IV.FDMO.HHN. ML:1.3 0.00006285000000000001 1.16 AML other m 2016-09-24T19:01:09.59
IV.FDMO.HHE. ML:1.3 0.00005875 0.76 AML other m 2016-09-24T19:01:11.59
IV.GUMA.HHE. ML:2.1 0.000352 0.76 AML other m 2016-09-24T19:01:11.14
IV.GUMA.HHN. ML:2.2 0.000432 0.32 AML other m 2016-09-24T19:01:10.57
IV.LNSS.HHN. ML:2.0 0.0008534999999999999 0.18 AML other m 2016-09-24T19:01:02.00
IV.LNSS.HHE. ML:2.0 0.0008514999999999999 0.38 AML other m 2016-09-24T19:01:01.88
IV.NRCA.HHE. ML:2.0 0.000654 0.2 AML other m 2016-09-24T19:01:03.07
IV.NRCA.HHN. ML:2.2 0.0010125 0.14 AML other m 2016-09-24T19:01:03.29
IV.RM33.EHN. ML:1.9 0.0006105 0.2 AML other m 2016-09-24T19:01:01.78
IV.RM33.EHE. ML:1.7 0.000399 0.22 AML other m 2016-09-24T19:01:03.18
IV.SNTG.HHN. ML:1.1 0.00002215 1.44 AML other m 2016-09-24T19:01:18.51
IV.SNTG.HHE. ML:1.2 0.000022800000000000002 1.32 AML other m 2016-09-24T19:01:18.28
IV.T1202.EHN. ML:2.5 0.00429 1.1 AML other m 2016-09-24T19:00:59.48
IV.T1202.EHE. ML:2.4 0.00342 0.3 AML other m 2016-09-24T19:00:59.67
IV.T1241.HHE. ML:1.6 0.00020800000000000001 0.16 AML other m 2016-09-24T19:01:04.19
IV.T1241.HHN. ML:1.3 0.00010295 0.72 AML other m 2016-09-24T19:01:06.56
IV.TERO.HHE. ML:1.3 0.0000979 0.32 AML other m 2016-09-24T19:01:06.41
IV.TERO.HHN. ML:1.5 0.00014500000000000003 0.58 AML other m 2016-09-24T19:01:05.27
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