Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 25-09-2023 and time 19:06:48 (UTC) in region 3 km SW Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 3 km SW Amatrice (RI), on

  • 25-09-2023 19:06:48 (UTC)
  • 25-09-2023 21:06:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6020, 13.2770 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
Amatrice RI 3 2657 2657
Montereale AQ 9 2581 5238
Campotosto AQ 9 542 5780
Capitignano AQ 9 665 6445
Cittareale RI 10 482 6927
Accumoli RI 11 667 7594
Borbona RI 15 617 8211
Cagnano Amiterno AQ 16 1369 9580
Barete AQ 17 737 10317
Posta RI 17 694 11011
Crognaleto TE 18 1297 12308
Pizzoli AQ 18 4326 16634
Cortino TE 19 656 17290
Arquata del Tronto AP 19 1178 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
61 Km SE of Foligno (57155 inhabitants)
72 Km W of Montesilvano (53738 inhabitants)
78 Km W of Chieti (51815 inhabitants)
78 Km W of Pescara (121014 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
98 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 1.2 2023-09-25
19:06:48		 42.6017 13.2767 11 2023-09-25
19:20:33		 Sala Sismica INGV-Roma 121453261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-25 19:06:48 ± 0.05
Latitude 42.6017 ± 0.0036
Longitude 13.2767 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121453261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 316
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.05216
Epicentral distance of station farthest from the epicenter (degree) 0.92180
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 121453261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-25 19:20:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2023-09-25T19:07:06.08 0.6 undecidable manual S 135 58.0974 50 -0.11 47
IV.ATFO.HHZ. 2023-09-25T19:07:05.72 0.6 undecidable manual P 326 102.3198 50 0.38 41
IV.CSP1.EHZ. 2023-09-25T19:07:05.58 0.6 undecidable manual S 354 54.7008 50 0.31 45
IV.MC2.EHE. 2023-09-25T19:07:00.44 0.6 undecidable manual S 348 35.1426 50 0.4 46
7F.SIB2.EHZ. 2023-09-25T19:06:59.08 0.6 undecidable manual S 4 32.1456 50 -0.18 48
IV.GAVE.HNE. 2023-09-25T19:06:59.08 0.6 undecidable manual S 288 32.745 50 -0.34 47
7F.SIB1.EHZ. 2023-09-25T19:06:59.72 0.6 undecidable manual S 359 32.5452 50 0.37 46
IV.MMO1.HNN. 2023-09-25T19:06:59.55 0.6 undecidable manual S 7 33.2445 50 0 50
IV.T0110.HHZ. 2023-09-25T19:06:58.87 0.3 undecidable manual P 135 58.0974 50 0.34 67
IV.GIGS.HHZ. 2023-09-25T19:06:58.23 0.6 undecidable manual S 124 29.2485 50 -0.26 48
7F.SIB3.EHZ. 2023-09-25T19:06:58.52 0.6 undecidable manual S 359 30.3474 50 -0.24 48
IV.NRCA.HHZ. 2023-09-25T19:06:58.03 0.6 undecidable manual S 333 28.9488 50 -0.36 47
IV.CSP1.EHZ. 2023-09-25T19:06:57.86 0.6 undecidable manual P 354 54.7008 50 -0.14 47
IV.MC2.EHE. 2023-09-25T19:06:55.04 0.1 undecidable manual P 348 35.1426 50 0.06 99
IV.MTRA.EHZ. 2023-09-25T19:06:55.37 0.6 undecidable manual S 30 19.7691 118 -0.47 47
IV.LNSS.HHZ. 2023-09-25T19:06:55.59 0.6 undecidable manual S 270 19.2696 118 -0.09 50
7F.SIB3.EHZ. 2023-09-25T19:06:54.55 0.3 undecidable manual P 359 30.3474 50 0.3 71
7F.SIB2.EHZ. 2023-09-25T19:06:54.60 0.3 undecidable manual P 4 32.1456 50 0.07 74
IV.GAVE.HNE. 2023-09-25T19:06:54.64 0.1 undecidable manual P 288 32.745 50 0.02 100
IV.GIGS.HHZ. 2023-09-25T19:06:54.10 1.0 undecidable manual P 124 29.2485 50 0.02 25
7F.SIB1.EHZ. 2023-09-25T19:06:54.04 0.3 undecidable manual P 359 32.5452 50 -0.54 67
IV.MMO1.HNN. 2023-09-25T19:06:54.61 0.1 undecidable manual P 7 33.2445 50 -0.09 98
IV.CAMP.HHZ. 2023-09-25T19:06:53.77 0.6 undecidable manual S 124 13.0758 129 -0.1 51
IV.NRCA.HHZ. 2023-09-25T19:06:53.97 0.1 undecidable manual P 333 28.9488 50 -0.06 100
IV.RM33.EHZ. 2023-09-25T19:06:53.35 0.6 undecidable manual S 206 11.4774 132 -0.1 51
IV.LNSS.HHZ. 2023-09-25T19:06:52.50 1.0 undecidable manual P 270 19.2696 118 0.04 26
IV.SMA1.EHZ. 2023-09-25T19:06:52.07 0.6 undecidable manual S 56 5.7942 151 -0.14 51
IV.MTRA.EHZ. 2023-09-25T19:06:52.69 0.1 undecidable manual P 30 19.7691 118 0.14 100
IV.CAMP.HHZ. 2023-09-25T19:06:51.32 0.3 undecidable manual P 124 13.0758 129 -0.1 76
IV.RM33.EHZ. 2023-09-25T19:06:51.37 0.6 undecidable manual P 206 11.4774 132 0.19 50
IV.SMA1.EHZ. 2023-09-25T19:06:50.72 0.1 negative manual P 56 5.7942 151 0.26 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.9 0.00124 0.54 AML other m 2023-09-25T19:06:52.46
IV.SMA1.EHN. ML:1.7 0.0008365 0.24 AML other m 2023-09-25T19:06:52.38
IV.CAMP.HHN. ML:0.8 0.00006435 1.6 AML other m 2023-09-25T19:06:54.16
IV.RM33.EHE. ML:1.3 0.000211 0.72 AML other m 2023-09-25T19:06:54.58
IV.RM33.EHN. ML:1.2 0.000158 0.84 AML other m 2023-09-25T19:06:54.62
IV.CAMP.HHE. ML:0.7 0.000049000000000000005 0.82 AML other m 2023-09-25T19:06:54.93
IV.LNSS.HHE. ML:0.8 0.000051250000000000006 1.4 AML other m 2023-09-25T19:06:58.08
IV.NRCA.HHE. ML:1.6 0.000208 0.08 AML other m 2023-09-25T19:06:58.45
IV.NRCA.HHN. ML:1.4 0.0001275 0.5 AML other m 2023-09-25T19:06:59.50
IV.LNSS.HHN. ML:0.8 0.00005165 0.42 AML other m 2023-09-25T19:06:59.67
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