Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 24-09-2016 and time 20:35:37 (UTC) in region 7 km W Accumoli (RI)

A magnitude ML 0.7 earthquake occured in region: 7 km W Accumoli (RI), on

  • 24-09-2016 20:35:37 (UTC)
  • 24-09-2016 22:35:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7010, 13.1640 at 10 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 7 667 667
Cittareale RI 9 482 1149
Norcia PG 12 4957 6106
Cascia PG 12 3217 9323
Amatrice RI 13 2657 11980
Arquata del Tronto AP 14 1178 13158
Monteleone di Spoleto PG 18 599 13757
Poggiodomo PG 19 117 13874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of L'Aquila (69753 inhabitants)
45 Km W of Teramo (54892 inhabitants)
45 Km E of Terni (111501 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
78 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
90 Km W of Pescara (121014 inhabitants)
91 Km W of Chieti (51815 inhabitants)
92 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 0.7 2016-09-24
20:35:37		 42.7008 13.164 10 2016-09-24
20:46:02		 Sala Sismica INGV-Roma 29487861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-24 20:35:37 ± 0.48
Latitude 42.7008 ± 0.0162
Longitude 13.1640 ± 0.0771
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 29487861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6288
Semi-minor axis of confidence ellipse (meter) 1446
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 6290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.32200
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 3
Type of magnitude ML
Reference to an origin 29487861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-24 20:46:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MNTV.HNZ. 2016-09-24T20:36:56.99 3.0 undecidable manual Sg 7.65 0
AC.VLO.HHZ. 2016-09-24T20:36:46.10 3.0 undecidable manual Pn 1.08 0
IV.EUCT.HNZ. 2016-09-24T20:36:29.65 3.0 positive manual Pn 1.57 0
BA.PZUN.HHZ. 2016-09-24T20:36:17.94 3.0 positive manual Pn 1.76 0
IV.SRES.HHZ. 2016-09-24T20:36:15.99 3.0 undecidable manual Sg 146.742 3.89 0
IV.BRSN.EHZ. 2016-09-24T20:35:52.84 3.0 positive manual Pn -4.86 0
IV.SRES.HHZ. 2016-09-24T20:35:50.92 3.0 undecidable manual Pg 146.742 -3.01 0
IV.T1247.HHZ. 2016-09-24T20:35:48.35 0.6 undecidable manual S 159 30.747 50 -0.46 66
IV.RM33.EHZ. 2016-09-24T20:35:45.38 0.6 undecidable manual S 169 21.6672 115 -0.83 58
IV.NARO.HHZ. 2016-09-24T20:35:44.77 3.0 negative manual P -4.32 0
IV.RM33.EHZ. 2016-09-24T20:35:44.19 1.0 undecidable manual P 169 21.6672 115 1.49 21
IV.T1247.HHZ. 2016-09-24T20:35:44.59 0.3 positive manual P 159 30.747 50 0.39 100
IV.T1242.HHZ. 2016-09-24T20:35:43.27 0.6 undecidable manual S 13 14.6742 125 -0.81 59
IV.T1202.EHZ. 2016-09-24T20:35:42.13 0.6 undecidable manual S 86 4.995 154 0.32 71
IV.T1242.HHZ. 2016-09-24T20:35:41.72 1.0 undecidable manual P 13 14.6742 125 0.25 35
IV.NRCA.HHZ. 2016-09-24T20:35:41.66 1.0 undecidable manual P 345 15.2736 123 0.08 37
IV.T1202.EHZ. 2016-09-24T20:35:40.85 1.0 undecidable manual P 86 4.995 154 0.68 32
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.6 0.0000412 0.12 AML other m 2016-09-24T20:35:53.37
IV.NRCA.HHE. ML:0.7 0.00004405 0.1 AML other m 2016-09-24T20:36:47.48
IV.T1242.HHN. ML:0.4 0.0000249 0.14 AML other m 2016-09-24T20:35:43.78
IV.T1242.HHE. ML:0.3 0.000018200000000000002 0.8 AML other m 2016-09-24T20:35:43.92
IV.T1247.HHN. ML:1.1 0.00005945 0.62 AML other m 2016-09-24T20:35:46.05
IV.T1247.HHE. ML:0.9 0.00003995 0.1 AML other m 2016-09-24T20:35:46.24
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