Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 04-10-2023 and time 21:53:40 (UTC) in region 4 km NW Amatrice (RI)

A magnitude ML 2.0 earthquake occured in region: 4 km NW Amatrice (RI), on

  • 04-10-2023 21:53:40 (UTC)
  • 04-10-2023 23:53:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6610, 13.2680 at 11 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 4 2657 2657
Accumoli RI 4 667 3324
Cittareale RI 10 482 3806
Arquata del Tronto AP 13 1178 4984
Campotosto AQ 14 542 5526
Montereale AQ 15 2581 8107
Capitignano AQ 16 665 8772
Acquasanta Terme AP 17 2916 11688
Borbona RI 20 617 12305

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Teramo (54892 inhabitants)
36 Km NW of L'Aquila (69753 inhabitants)
52 Km E of Terni (111501 inhabitants)
57 Km SE of Foligno (57155 inhabitants)
74 Km W of Montesilvano (53738 inhabitants)
81 Km W of Pescara (121014 inhabitants)
81 Km W of Chieti (51815 inhabitants)
86 Km NE of Guidonia Montecelio (88673 inhabitants)
87 Km NE of Tivoli (56533 inhabitants)
87 Km SE of Perugia (166134 inhabitants)
99 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 2.0 2023-10-04
21:53:40		 42.6612 13.2678 11 2023-10-04
22:03:24		 Sala Sismica INGV-Roma 121763151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-04 21:53:40 ± 0.08
Latitude 42.6612 ± 0.0036
Longitude 13.2678 ± 0.0061
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121763151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 446
Semi-minor axis of confidence ellipse (meter) 402
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53150
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 14
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 70
Type of magnitude ML
Reference to an origin 121763151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-04 22:03:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2023-10-04T21:54:11.41 3.0 undecidable manual S 0.24 0
IV.MURB.HHZ. 2023-10-04T21:54:09.47 3.0 undecidable manual S 0.33 0
IV.INTR.HHZ. 2023-10-04T21:54:08.19 3.0 undecidable manual S -0.58 0
IV.CING.HHZ. 2023-10-04T21:54:06.21 3.0 undecidable manual S -0.01 0
IV.MPAG.EHZ. 2023-10-04T21:54:00.39 3.0 positive manual P 0.48 0
IV.NARO.HHZ. 2023-10-04T21:54:00.75 3.0 positive manual P 0.34 0
IV.MOMA.HHZ. 2023-10-04T21:53:59.71 0.3 undecidable manual S 286 58.9965 90 0.83 55
IV.FRON.EHZ. 2023-10-04T21:53:58.00 3.0 negative manual P -0.63 0
IV.ARVD.HHZ. 2023-10-04T21:53:57.11 3.0 positive manual P -0.53 0
IV.MGAB.HHZ. 2023-10-04T21:53:57.95 3.0 positive manual P 0.24 0
IV.CESI.HHZ. 2023-10-04T21:53:56.16 0.3 undecidable manual S 322 48.2184 90 0.15 69
IV.MURB.HHZ. 2023-10-04T21:53:56.53 3.0 positive manual P 0.03 0
IV.INTR.HHZ. 2023-10-04T21:53:55.50 3.0 positive manual P -0.79 0
IV.FIAM.HHZ. 2023-10-04T21:53:55.39 0.1 undecidable manual S 196 45.3213 90 0.17 92
IV.CING.HHZ. 2023-10-04T21:53:54.37 3.0 positive manual P -0.49 0
IT.MTCL.HGZ. 2023-10-04T21:53:54.38 0.3 undecidable manual S 329 42.9237 90 -0.2 69
IV.CERT.HHZ. 2023-10-04T21:53:54.53 3.0 positive manual P -0.48 0
IV.MF5.EHZ. 2023-10-04T21:53:54.68 0.3 undecidable manual S 23 39.4272 91 1.02 53
IV.ATCC.EHZ. 2023-10-04T21:53:54.15 3.0 positive manual P -0.24 0
IV.PP3.EHZ. 2023-10-04T21:53:53.26 3.0 negative manual P -2.45 0
IV.GIGS.HHZ. 2023-10-04T21:53:51.94 0.1 undecidable manual S 133 33.9438 91 -0.26 92
IV.T0110.HHZ. 2023-10-04T21:53:51.95 3.0 undecidable manual P -0.12 0
IV.MOMA.HHZ. 2023-10-04T21:53:51.04 0.3 undecidable manual P 286 58.9965 90 -0.15 68
IV.ASSB.HHZ. 2023-10-04T21:53:51.92 3.0 negative manual P -0.42 0
IV.GAVE.EHZ. 2023-10-04T21:53:51.09 0.3 undecidable manual S 277 30.6471 91 -0.22 70
IV.MML1.EHZ. 2023-10-04T21:53:50.53 3.0 negative manual P -0.32 0
IV.TERO.HNZ. 2023-10-04T21:53:50.16 0.3 undecidable manual S 99 27.75 91 -0.38 68
IV.OFFI.HHZ. 2023-10-04T21:53:50.10 3.0 positive manual Pg 0.74 0
IV.CESX.HHZ. 2023-10-04T21:53:50.52 0.1 undecidable manual P 264 55.8996 90 -0.18 90
IV.CSP1.EHZ. 2023-10-04T21:53:49.42 3.0 negative manual P -0.24 0
IV.GUMA.HHZ. 2023-10-04T21:53:49.31 3.0 negative manual Pg 0.13 0
IV.CESI.HHZ. 2023-10-04T21:53:49.40 0.1 negative manual P 322 48.2184 90 -0.13 92
IV.MF5.EHZ. 2023-10-04T21:53:48.57 0.1 undecidable manual P 23 39.4272 91 0.4 89
IV.LNSS.HHZ. 2023-10-04T21:53:48.17 0.1 undecidable manual S 251 19.6692 92 -0.2 96
IV.FDMO.HHZ. 2023-10-04T21:53:48.68 3.0 negative manual Pg -0.3 0
IV.NRCA.HHZ. 2023-10-04T21:53:48.78 0.1 undecidable manual S 327 22.8549 92 -0.45 90
IT.MTCL.HGZ. 2023-10-04T21:53:48.44 0.1 undecidable manual P 329 42.9237 90 -0.26 91
IV.FIAM.HHZ. 2023-10-04T21:53:48.95 0.3 negative manual P 196 45.3213 90 -0.12 70
IV.GIGS.HHZ. 2023-10-04T21:53:47.20 0.1 undecidable manual P 133 33.9438 91 -0.12 95
IV.RM33.EHZ. 2023-10-04T21:53:47.75 0.1 undecidable manual S 194 17.4714 93 -0.03 99
IV.TERO.HNZ. 2023-10-04T21:53:46.28 0.1 undecidable manual P 99 27.75 91 -0.09 96
IV.GAVE.EHZ. 2023-10-04T21:53:46.63 0.1 undecidable manual P 277 30.6471 91 -0.18 94
IV.MTRA.EHZ. 2023-10-04T21:53:46.83 0.1 undecidable manual S 45 14.874 98 -0.29 94
IV.SMA1.EHZ. 2023-10-04T21:53:45.31 0.1 undecidable manual S 122 6.4935 140 0.14 98
IV.LNSS.HHZ. 2023-10-04T21:53:45.10 0.1 undecidable manual P 251 19.6692 92 -0.02 99
IV.NRCA.HHZ. 2023-10-04T21:53:45.47 0.1 undecidable manual P 327 22.8549 92 -0.14 96
IV.MTRA.EHZ. 2023-10-04T21:53:44.44 0.1 undecidable manual P 45 14.874 98 0.05 100
IV.RM33.EHZ. 2023-10-04T21:53:44.90 0.1 negative manual P 194 17.4714 93 0.12 98
IV.SMA1.EHZ. 2023-10-04T21:53:43.59 0.1 undecidable manual P 122 6.4935 140 0.32 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:2.4 0.003625 0.22 AML other m 2023-10-04T21:53:45.70
IV.SMA1.EHN. ML:2.4 0.0037800000000000004 1.68 AML other m 2023-10-04T21:53:45.89
IV.MTRA.HNN. ML:2.5 0.002615 1.86 AML other m 2023-10-04T21:53:46.02
IV.MTRA.EHN. ML:2.5 0.002625 1.86 AML other m 2023-10-04T21:53:46.02
IV.MTRA.HNE. ML:2.6 0.0032199999999999998 0.26 AML other m 2023-10-04T21:53:47.30
IV.MTRA.EHE. ML:2.6 0.003345 1.1 AML other m 2023-10-04T21:53:47.30
IV.RM33.HNN. ML:2.1 0.000981 1.7 AML other m 2023-10-04T21:53:48.00
IV.RM33.EHN. ML:2.0 0.000914 1.7 AML other m 2023-10-04T21:53:48.01
IV.LNSS.HHE. ML:2.0 0.0007825 0.32 AML other m 2023-10-04T21:53:48.31
IV.LNSS.HHN. ML:2.0 0.0006885 0.14 AML other m 2023-10-04T21:53:48.29
IV.RM33.HNE. ML:1.9 0.0006795 0.56 AML other m 2023-10-04T21:53:48.83
IV.RM33.EHE. ML:1.9 0.0006715 0.88 AML other m 2023-10-04T21:53:48.11
IV.NRCA.HHN. ML:2.7 0.0028650000000000004 0.12 AML other m 2023-10-04T21:53:49.13
IV.NRCA.HNN. ML:2.7 0.002955 0.14 AML other m 2023-10-04T21:53:49.14
IV.NRCA.HHE. ML:3.0 0.00654 0.12 AML other m 2023-10-04T21:53:49.08
IV.NRCA.HNE. ML:2.9 0.005825 0.12 AML other m 2023-10-04T21:53:49.09
IV.TERO.HHN. ML:2.3 0.0010275 0.06 AML other m 2023-10-04T21:53:50.38
IV.TERO.HNN. ML:2.3 0.001145 0.06 AML other m 2023-10-04T21:53:50.39
IV.TERO.HHE. ML:2.0 0.000463 0.14 AML other m 2023-10-04T21:53:51.04
IV.TERO.HNE. ML:1.8 0.000294 0.4 AML other m 2023-10-04T21:53:51.36
IV.GAVE.EHE. ML:2.1 0.0005840000000000001 0.28 AML other m 2023-10-04T21:53:51.91
IV.GAVE.EHN. ML:2.1 0.000585 1.2 AML other m 2023-10-04T21:53:51.37
IV.GIGS.HHN. ML:1.6 0.0001715 0.2 AML other m 2023-10-04T21:53:52.29
IV.GIGS.HHE. ML:1.5 0.0001385 0.22 AML other m 2023-10-04T21:53:52.56
IT.MTCL.HGE. ML:3.7 0.01685 0.06 AML other m 2023-10-04T21:53:54.70
IV.MF5.EHN. ML:2.2 0.000517 0.22 AML other m 2023-10-04T21:53:54.98
IV.MF5.EHE. ML:2.1 0.00042100000000000004 1.62 AML other m 2023-10-04T21:53:54.94
IV.FIAM.HNE. ML:1.8 0.0001735 0.62 AML other m 2023-10-04T21:53:55.75
IV.FIAM.HHE. ML:1.7 0.0001625 0.3 AML other m 2023-10-04T21:53:55.74
IT.MTCL.HGN. ML:3.7 0.01695 1.6 AML other m 2023-10-04T21:53:55.97
IV.FDMO.HHN. ML:1.7 0.000154 0.18 AML other m 2023-10-04T21:53:56.31
IV.GUMA.HHE. ML:2.5 0.0010249999999999999 0.34 AML other m 2023-10-04T21:53:56.37
IV.GUMA.HNE. ML:2.4 0.0007955000000000001 0.32 AML other m 2023-10-04T21:53:56.38
IV.FIAM.HHN. ML:1.7 0.00013949999999999998 0.54 AML other m 2023-10-04T21:53:56.78
IV.GUMA.HNN. ML:2.3 0.0006495 0.54 AML other m 2023-10-04T21:53:56.57
IV.FIAM.HNN. ML:1.8 0.0002 1.14 AML other m 2023-10-04T21:53:57.06
IV.FDMO.HHE. ML:1.6 0.000133 1.28 AML other m 2023-10-04T21:53:57.20
IV.GUMA.HHN. ML:2.2 0.0005024999999999999 0.54 AML other m 2023-10-04T21:53:57.48
IV.CSP1.EHN. ML:2.0 0.000295 1.12 AML other m 2023-10-04T21:53:57.43
IV.OFFI.HHE. ML:2.2 0.00041549999999999996 0.82 AML other m 2023-10-04T21:53:58.05
IV.OFFI.HHN. ML:2.5 0.0009025 0.64 AML other m 2023-10-04T21:53:58.11
IV.MML1.EHN. ML:1.7 0.00012675 0.12 AML other m 2023-10-04T21:53:59.13
IV.CESI.HHN. ML:1.9 0.00020549999999999998 1.16 AML other m 2023-10-04T21:53:59.70
IV.CESI.HHE. ML:1.7 0.00014800000000000002 0.92 AML other m 2023-10-04T21:53:59.14
IV.MML1.EHE. ML:1.6 0.00010185 0.94 AML other m 2023-10-04T21:53:59.33
IV.CSP1.EHE. ML:1.9 0.0002315 0.24 AML other m 2023-10-04T21:53:59.86
IV.CESX.HHE. ML:1.4 0.00004875 0.98 AML other m 2023-10-04T21:54:00.47
IV.MOMA.HHE. ML:1.9 0.000151 0.16 AML other m 2023-10-04T21:54:00.61
IV.CESX.HHN. ML:1.4 0.000058450000000000005 0.46 AML other m 2023-10-04T21:54:00.47
IV.MOMA.HHN. ML:2.0 0.000184 0.22 AML other m 2023-10-04T21:54:01.27
IV.ASSB.HHE. ML:2.0 0.000179 0.48 AML other m 2023-10-04T21:54:01.66
IV.ASSB.HHN. ML:1.9 0.000156 0.46 AML other m 2023-10-04T21:54:02.70
IV.T0110.HHE. ML:2.0 0.0002125 1.08 AML other m 2023-10-04T21:54:03.60
IV.T0110.HHN. ML:2.1 0.00021799999999999999 0.72 AML other m 2023-10-04T21:54:03.14
IV.ATCC.EHN. ML:1.9 0.0001061 0.24 AML other m 2023-10-04T21:54:05.82
IV.CING.HHN. ML:1.6 0.00005434999999999999 0.6 AML other m 2023-10-04T21:54:07.40
IV.CING.HHE. ML:1.6 0.000058450000000000005 0.96 AML other m 2023-10-04T21:54:07.50
IV.ATCC.EHE. ML:1.8 0.00010095 0.74 AML other m 2023-10-04T21:54:08.56
IV.MURB.HHE. ML:2.4 0.00026700000000000004 0.24 AML other m 2023-10-04T21:54:10.34
IV.ARVD.HHE. ML:1.4 0.0000249 1.02 AML other m 2023-10-04T21:54:11.89
IV.ARVD.HHN. ML:1.5 0.00002975 0.64 AML other m 2023-10-04T21:54:11.67
IV.INTR.HHE. ML:1.6 0.00004910000000000001 0.84 AML other m 2023-10-04T21:54:12.74
IV.CERT.HHE. ML:1.6 0.000057050000000000004 0.28 AML other m 2023-10-04T21:54:12.65
IV.CERT.HHN. ML:1.5 0.0000455 0.32 AML other m 2023-10-04T21:54:12.67
IV.MURB.HHN. ML:2.2 0.00019700000000000002 0.68 AML other m 2023-10-04T21:54:13.56
IV.FRON.EHE. ML:1.4 0.000025149999999999998 1.14 AML other m 2023-10-04T21:54:13.83
IV.MGAB.HHN. ML:1.8 0.00007089999999999999 0.62 AML other m 2023-10-04T21:54:14.11
IV.MGAB.HHE. ML:1.6 0.00004445 0.32 AML other m 2023-10-04T21:54:18.75
IV.INTR.HHN. ML:1.7 0.00005964999999999999 0.7 AML other m 2023-10-04T21:54:20.16
IV.FRON.EHN. ML:1.5 0.00003085 0.34 AML other m 2023-10-04T21:54:22.28
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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