Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 07-12-2023 and time 22:28:51 (Italy) in region 2 km SE Amatrice (RI)

A magnitude ML 0.8 earthquake occured in region: 2 km SE Amatrice (RI), on

  • 07-12-2023 21:28:51 (UTC)
  • 07-12-2023 22:28:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6150, 13.2980 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 2 2657 2657
Campotosto AQ 9 542 3199
Accumoli RI 10 667 3866
Capitignano AQ 10 665 4531
Montereale AQ 11 2581 7112
Cittareale RI 11 482 7594
Crognaleto TE 17 1297 8891
Cortino TE 17 656 9547
Borbona RI 18 617 10164
Arquata del Tronto AP 18 1178 11342
Barete AQ 18 737 12079
Cagnano Amiterno AQ 18 1369 13448
Posta RI 19 694 14142
Acquasanta Terme AP 20 2916 17058
Pizzoli AQ 20 4326 21384

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
62 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
77 Km W of Chieti (51815 inhabitants)
83 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 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 0.8 2023-12-07
21:28:51		 42.6148 13.2982 12 2023-12-07
21:35:52		 Sala Sismica INGV-Roma 123882811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-07 21:28:51 ± 0.07
Latitude 42.6148 ± 0.0045
Longitude 13.2982 ± 0.0049
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 123882811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 479
Semi-minor axis of confidence ellipse (meter) 128
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 207
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.48114
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 123882811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-07 21:35:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-12-07T21:29:08.89 0.6 undecidable manual S 352 53.4021 91 0.42 43
IV.MMO1.EHZ. 2023-12-07T21:29:02.61 0.6 undecidable manual S 4 31.6461 92 -0.05 49
IV.GIGS.HHZ. 2023-12-07T21:29:01.77 0.6 undecidable manual S 129 28.749 93 -0.11 49
IV.CSP1.EHZ. 2023-12-07T21:29:01.85 1.0 undecidable manual P 352 53.4021 91 0.44 21
IV.NRCA.HHZ. 2023-12-07T21:29:01.41 0.6 undecidable manual S 328 28.5492 93 -0.41 45
IV.TERO.HNZ. 2023-12-07T21:29:00.64 0.6 undecidable manual S 88 24.9528 94 -0.24 48
IV.LNSS.HHZ. 2023-12-07T21:28:59.73 0.6 undecidable manual S 266 21.0678 96 -0.12 48
IV.GAVE.EHZ. 2023-12-07T21:28:58.29 1.0 undecidable manual P 285 34.0437 92 -0.13 24
IV.MMO1.EHZ. 2023-12-07T21:28:58.09 0.1 undecidable manual P 4 31.6461 92 0.05 97
IV.RM33.EHZ. 2023-12-07T21:28:57.89 0.6 undecidable manual S 210 13.5753 110 0.01 50
IV.NRCA.HHZ. 2023-12-07T21:28:57.43 0.3 positive manual P 328 28.5492 93 -0.14 72
IV.GIGS.HHZ. 2023-12-07T21:28:57.60 0.1 undecidable manual P 129 28.749 93 0 98
IV.LNSS.HHZ. 2023-12-07T21:28:56.45 0.1 positive manual P 266 21.0678 96 0.03 100
IV.TERO.HNZ. 2023-12-07T21:28:56.98 0.1 undecidable manual P 88 24.9528 94 -0.05 99
IV.FAGN.HHZ. 2023-12-07T21:28:56.63 3.0 undecidable manual P 0
IV.RM33.EHZ. 2023-12-07T21:28:55.50 0.6 negative manual P 210 13.5753 110 0.21 49
IV.SMA1.EHZ. 2023-12-07T21:28:55.75 0.6 undecidable manual S 60 3.4965 159 -0.22 49
IV.SMA1.EHZ. 2023-12-07T21:28:54.36 0.1 undecidable manual P 60 3.4965 159 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RM33.EHN. ML:0.9 0.00008165 0.3 AML other m 2023-12-07T21:28:58.06
IV.RM33.EHE. ML:1.0 0.00008999999999999999 0.24 AML other m 2023-12-07T21:28:58.38
IV.NRCA.HHN. ML:0.9 0.000037900000000000006 0.74 AML other m 2023-12-07T21:29:01.08
IV.NRCA.HHE. ML:1.0 0.0000532 0.24 AML other m 2023-12-07T21:29:01.81
IV.LNSS.HHE. ML:0.5 0.00002041995 0.1024 AML other m 2023-12-07T21:29:00.63
IV.LNSS.HHN. ML:0.6 0.000025970350000000005 0.256 AML other m 2023-12-07T21:29:01.96
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