Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 09-09-2020 and time 02:46:06 (Italy) in region 6 km W Amatrice (RI)

A magnitude ML 1.1 earthquake occured in region: 6 km W Amatrice (RI), on

  • 09-09-2020 00:46:06 (UTC)
  • 09-09-2020 02:46:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6460, 13.2260 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
Amatrice RI 6 2657 2657
Accumoli RI 6 667 3324
Cittareale RI 6 482 3806
Montereale AQ 14 2581 6387
Capitignano AQ 15 665 7052
Arquata del Tronto AP 15 1178 8230
Campotosto AQ 15 542 8772
Borbona RI 17 617 9389
Posta RI 17 694 10083
Cascia PG 19 3217 13300
Norcia PG 20 4957 18257

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km W of Pescara (121014 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
84 Km W of Chieti (51815 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
95 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 1.1 2020-09-09
00:46:06		 42.6462 13.2255 12 2020-09-09
01:00:20		 Sala Sismica INGV-Roma 82751031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-09 00:46:06 ± 0.1
Latitude 42.6462 ± 0.0054
Longitude 13.2255 ± 0.0073
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 82751031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 598
Semi-minor axis of confidence ellipse (meter) 349
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 26
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.38221
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 82751031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-09 01:00:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-09-09T00:46:16.60 0.6 undecidable manual S 95 30.9468 93 -0.5 46
IV.MC2.EHZ. 2020-09-09T00:46:16.85 0.6 undecidable manual S 354 29.5482 93 0.13 50
IV.MMO1.EHZ. 2020-09-09T00:46:16.48 0.6 undecidable manual S 16 29.2485 93 -0.16 50
IV.GAVE.EHZ. 2020-09-09T00:46:15.84 0.6 undecidable manual S 281 27.5502 94 -0.33 48
IV.NRCA.HHZ. 2020-09-09T00:46:14.44 0.6 undecidable manual S 336 22.6551 95 -0.44 47
IV.MF5.EHZ. 2020-09-09T00:46:14.72 0.3 undecidable manual P 27 42.4242 92 0.4 69
IV.MC2.EHZ. 2020-09-09T00:46:13.60 0.3 undecidable manual P 354 29.5482 93 1.26 49
IV.MTRA.EHZ. 2020-09-09T00:46:13.42 0.6 undecidable manual S 49 18.5703 99 -0.38 48
IV.ARRO.EHZ. 2020-09-09T00:46:13.60 0.3 undecidable manual P 259 38.2284 92 -0.08 75
IV.GAVE.EHZ. 2020-09-09T00:46:12.32 0.3 undecidable manual P 281 27.5502 94 0.29 72
IV.MMO1.EHZ. 2020-09-09T00:46:12.17 0.3 undecidable manual P 16 29.2485 93 -0.13 75
IV.TERO.HHZ. 2020-09-09T00:46:12.38 0.3 undecidable manual P 95 30.9468 93 -0.18 74
IV.RM33.EHZ. 2020-09-09T00:46:12.88 0.6 undecidable manual S 183 15.2736 106 -0.05 52
IV.LNSS.HHZ. 2020-09-09T00:46:12.92 0.6 undecidable manual S 252 15.873 104 -0.17 51
IV.SMA1.EHZ. 2020-09-09T00:46:11.54 0.6 undecidable manual S 101 9.0798 130 0.05 53
IV.NRCA.HHZ. 2020-09-09T00:46:11.09 0.3 undecidable manual P 336 22.6551 95 -0.19 75
IV.RM33.EHZ. 2020-09-09T00:46:10.24 0.3 undecidable manual P 183 15.2736 106 0.08 77
IV.LNSS.HHZ. 2020-09-09T00:46:10.27 0.3 undecidable manual P 252 15.873 104 0.02 78
IV.CAMP.HHZ. 2020-09-09T00:46:10.72 0.3 undecidable manual P 129 19.3695 98 -0.06 77
IV.MTRA.EHZ. 2020-09-09T00:46:10.51 0.3 undecidable manual P 49 18.5703 99 -0.14 76
IV.T1299.HNZ. 2020-09-09T00:46:10.59 0.6 undecidable manual S 106 4.7952 152 -0.17 51
IV.SMA1.EHZ. 2020-09-09T00:46:09.62 0.1 undecidable manual P 101 9.0798 130 0.3 100
IV.T1299.HNZ. 2020-09-09T00:46:09.09 0.3 undecidable manual P 106 4.7952 152 0.19 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.HNE. ML:1.1 0.0001136397 0.12 AML other m 2020-09-09T00:46:13.28
IV.RM33.EHE. ML:1.1 0.00011268975 0.14 AML other m 2020-09-09T00:46:13.27
IV.RM33.EHN. ML:1.0 0.00007760048 0.1 AML other m 2020-09-09T00:46:13.18
IV.LNSS.HNE. ML:1.0 0.00009118030499999999 0.13 AML other m 2020-09-09T00:46:13.27
IV.LNSS.HNN. ML:1.1 0.00011333414999999999 0.65 AML other m 2020-09-09T00:46:13.03
IV.LNSS.HHE. ML:1.1 0.000103018845 0.14 AML other m 2020-09-09T00:46:13.27
IV.LNSS.HHN. ML:0.8 0.00005223243515 0.18 AML other m 2020-09-09T00:46:13.33
IV.MTRA.EHE. ML:0.8 0.00004629908 0.1 AML other m 2020-09-09T00:46:13.64
IV.MTRA.EHN. ML:0.9 0.00006108777 0.12 AML other m 2020-09-09T00:46:13.48
IV.NRCA.HNE. ML:1.4 0.0001518467 0.14 AML other m 2020-09-09T00:46:14.71
IV.NRCA.HNN. ML:1.4 0.0001620402 0.12 AML other m 2020-09-09T00:46:14.70
IV.NRCA.HHE. ML:1.4 0.00015138205 0.14 AML other m 2020-09-09T00:46:14.70
IV.NRCA.HHN. ML:1.5 0.00019042314999999997 0.14 AML other m 2020-09-09T00:46:14.63
IV.GAVE.EHE. ML:0.9 0.000037521 0.18 AML other m 2020-09-09T00:46:18.41
IV.GAVE.EHN. ML:0.9 0.00004670125 0.28 AML other m 2020-09-09T00:46:16.28
IV.TERO.HHE. ML:1.2 0.00006644654 0.06 AML other m 2020-09-09T00:46:16.68
IV.TERO.HHN. ML:1.5 0.0001461112 0.06 AML other m 2020-09-09T00:46:16.68
IV.TERO.HNN. ML:1.5 0.00013181884999999998 0.07 AML other m 2020-09-09T00:46:16.65
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