Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 02-09-2020 and time 01:40:50 (Italy) in region 8 km NW Accumoli (RI)

A magnitude ML 0.6 earthquake occured in region: 8 km NW Accumoli (RI), on

  • 01-09-2020 23:40:50 (UTC)
  • 02-09-2020 01:40:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7560, 13.1860 at 8 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 8 667 667
Norcia PG 9 4957 5624
Arquata del Tronto AP 9 1178 6802
Cascia PG 15 3217 10019
Montegallo AP 15 523 10542
Cittareale RI 16 482 11024
Castelsantangelo sul Nera MC 16 281 11305
Amatrice RI 16 2657 13962
Preci PG 18 724 14686
Acquasanta Terme AP 18 2916 17602
Montemonaco AP 20 604 18206

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
49 Km E of Terni (111501 inhabitants)
76 Km SE of Perugia (166134 inhabitants)
83 Km W of Montesilvano (53738 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km W of Chieti (51815 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
100 Km S of Ancona (100861 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 0.6 2020-09-01
23:40:50		 42.7563 13.1865 8 2020-09-01
23:49:03		 Sala Sismica INGV-Roma 82544471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-01 23:40:50 ± 0.21
Latitude 42.7563 ± 0.0036
Longitude 13.1865 ± 0.0049
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82544471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 153
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 106
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.24821
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 82544471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-01 23:49:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.HNZ. 2020-09-01T23:41:00.40 0.1 undecidable manual S 175 27.5502 107 -0.24 94
IV.GAVE.EHZ. 2020-09-01T23:40:59.53 0.1 undecidable manual S 253 24.8529 109 -0.22 95
IV.LNSS.HNZ. 2020-09-01T23:40:58.45 0.1 undecidable manual S 215 20.7681 112 0.03 100
IV.SMA1.EHZ. 2020-09-01T23:40:57.71 0.3 undecidable manual S 139 18.4704 114 0.01 75
IV.MMO1.EHZ. 2020-09-01T23:40:57.90 0.1 undecidable manual S 36 19.5693 113 -0.13 98
IV.MC2.EHZ. 2020-09-01T23:40:57.42 0.1 undecidable manual S 1 17.1717 116 0.13 98
IV.RM33.HNZ. 2020-09-01T23:40:57.26 0.3 undecidable manual P 175 27.5502 107 0.84 58
IV.MTRA.EHZ. 2020-09-01T23:40:57.05 0.1 undecidable manual S 90 17.0718 116 -0.21 97
IV.NRCA.HHZ. 2020-09-01T23:40:55.40 0.1 undecidable manual S 326 10.3785 129 0.12 99
IV.GAVE.EHZ. 2020-09-01T23:40:55.64 0.1 undecidable manual P 253 24.8529 109 -0.27 94
IV.LNSS.HNZ. 2020-09-01T23:40:55.11 0.1 undecidable manual P 215 20.7681 112 -0.03 99
IV.MTRA.EHZ. 2020-09-01T23:40:54.43 0.1 undecidable manual P 90 17.0718 116 -0.04 100
IV.T1299.EHZ. 2020-09-01T23:40:54.47 0.1 undecidable manual P 150 15.6732 118 0.26 96
IV.SMA1.EHZ. 2020-09-01T23:40:54.77 0.3 undecidable manual P 139 18.4704 114 0.05 75
IV.MMO1.EHZ. 2020-09-01T23:40:54.77 0.1 undecidable manual P 36 19.5693 113 -0.14 98
IV.MC2.EHZ. 2020-09-01T23:40:54.47 0.3 undecidable manual P 1 17.1717 116 -0.02 75
IV.NRCA.HHZ. 2020-09-01T23:40:53.49 0.1 undecidable manual P 326 10.3785 129 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.7 0.00006459999999999998 0.74 AML other m 2020-09-01T23:40:55.21
IV.NRCA.HHN. ML:0.6 0.0000622 0.14 AML other m 2020-09-01T23:40:56.28
IV.MTRA.EHE. ML:0.6 0.00003517824 0.1408 AML other m 2020-09-01T23:40:57.79
IV.MTRA.EHN. ML:0.6 0.000032639335 0.1792 AML other m 2020-09-01T23:40:57.69
IV.GAVE.EHE. ML:0.5 0.000019805805 0.2816 AML other m 2020-09-01T23:41:01.19
IV.GAVE.EHN. ML:0.4 0.000015454575500000002 0.192 AML other m 2020-09-01T23:41:00.24
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