Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 01-10-2023 and time 09:38:14 (UTC) in region 6 km W Accumoli (RI)

A magnitude ML 2.1 earthquake occured in region: 6 km W Accumoli (RI), on

  • 01-10-2023 09:38:14 (UTC)
  • 01-10-2023 11:38:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6710, 13.1850 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
Accumoli RI 6 667 667
Cittareale RI 6 482 1149
Amatrice RI 10 2657 3806
Arquata del Tronto AP 15 1178 4984
Cascia PG 15 3217 8201
Norcia PG 16 4957 13158
Montereale AQ 17 2581 15739
Posta RI 18 694 16433
Borbona RI 18 617 17050
Monteleone di Spoleto PG 19 599 17649
Capitignano AQ 19 665 18314
Campotosto AQ 20 542 18856

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NW of L'Aquila (69753 inhabitants)
43 Km W of Teramo (54892 inhabitants)
46 Km E of Terni (111501 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
81 Km SE of Perugia (166134 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km NE of Tivoli (56533 inhabitants)
87 Km W of Pescara (121014 inhabitants)
88 Km W of Chieti (51815 inhabitants)
93 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 2.1 2023-10-01
09:38:14		 42.6713 13.1847 12 2023-10-01
09:51:38		 Sala Sismica INGV-Roma 121640681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-01 09:38:14 ± 0.1
Latitude 42.6713 ± 0.0036
Longitude 13.1847 ± 0.0049
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121640681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 410
Semi-minor axis of confidence ellipse (meter) 161
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 338
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47035
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 13
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 62
Type of magnitude ML
Reference to an origin 121640681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-01 09:51:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHZ. 2023-10-01T09:39:12.30 3.0 undecidable manual Sn 0.74 0
GU.GSCL.HHZ. 2023-10-01T09:38:58.78 3.0 negative manual Pn 4.47 0
IV.SEI.HHZ. 2023-10-01T09:38:53.12 3.0 undecidable manual Pg 7.12 0
IV.PARC.HHZ. 2023-10-01T09:38:51.07 3.0 undecidable manual S -1.96 0
IV.BARO.EHZ. 2023-10-01T09:38:47.12 3.0 undecidable manual S 1.2 0
IV.LPEL.HHZ. 2023-10-01T09:38:46.31 3.0 undecidable manual S -0.75 0
IV.PIEI.HHZ. 2023-10-01T09:38:36.04 3.0 positive manual P 2.76 0
IV.MML1.EHZ. 2023-10-01T09:38:32.42 3.0 undecidable manual S -0.35 0
IV.FRON.EHZ. 2023-10-01T09:38:32.44 3.0 negative manual P 0.17 0
IV.MGAB.HHZ. 2023-10-01T09:38:31.34 3.0 negative manual P 0.54 0
IV.CING.HHZ. 2023-10-01T09:38:29.02 3.0 positive manual P -0.14 0
IV.T0110.HHZ. 2023-10-01T09:38:27.76 3.0 positive manual P 0.63 0
IV.SNTG.HHZ. 2023-10-01T09:38:26.77 3.0 undecidable manual P -0.58 0
IV.TERO.HNZ. 2023-10-01T09:38:26.22 0.1 undecidable manual S 99 34.6431 92 -0.34 90
IV.CSP1.EHZ. 2023-10-01T09:38:25.01 3.0 undecidable manual P 1.01 0
IV.ASSB.HHZ. 2023-10-01T09:38:25.83 3.0 negative manual P 0.04 0
IV.MMO1.EHZ. 2023-10-01T09:38:24.78 0.3 undecidable manual S 25 27.8499 93 0.04 73
IV.MOMA.HHZ. 2023-10-01T09:38:24.28 0.6 undecidable manual P 287 52.2033 91 -0.04 47
IV.OFFI.HHZ. 2023-10-01T09:38:24.94 0.3 undecidable manual P 54 50.2164 91 0.93 56
IV.MML1.EHZ. 2023-10-01T09:38:24.34 3.0 positive manual P -0.42 0
IV.GUMA.HHZ. 2023-10-01T09:38:23.70 3.0 positive manual P -0.09 0
IV.CESI.HHZ. 2023-10-01T09:38:23.04 3.0 negative manual P -0.26 0
IV.MF5.EHZ. 2023-10-01T09:38:23.22 3.0 positive manual P -0.03 0
IV.CAMP.HHZ. 2023-10-01T09:38:23.46 0.1 undecidable manual S 129 23.6541 94 -0.18 96
IV.CESX.HHZ. 2023-10-01T09:38:23.75 0.6 positive manual P 262 49.3173 91 -0.12 47
IV.GAVE.HNZ. 2023-10-01T09:38:23.60 0.1 undecidable manual S 276 23.754 94 -0.07 99
IV.FIAM.HHZ. 2023-10-01T09:38:23.07 3.0 positive manual P 0.17 0
IV.NRCA.HNZ. 2023-10-01T09:38:22.13 0.1 undecidable manual S 342 18.87 97 -0.23 94
IV.MTRA.EHZ. 2023-10-01T09:38:22.47 0.1 undecidable manual S 61 19.6692 96 -0.11 96
IV.FDMO.HHZ. 2023-10-01T09:38:22.70 3.0 positive manual P -0.37 0
IV.GIGS.HHZ. 2023-10-01T09:38:22.24 0.6 negative manual P 127 39.9267 92 -0.19 47
IV.RM33.EHZ. 2023-10-01T09:38:22.04 0.1 undecidable manual S 172 18.1707 98 -0.14 99
IV.LNSS.HNZ. 2023-10-01T09:38:21.22 0.1 undecidable manual S 237 13.9749 108 0.12 98
IV.TERO.HNZ. 2023-10-01T09:38:21.43 0.1 undecidable manual P 99 34.6431 92 -0.18 93
IV.SMA1.EHZ. 2023-10-01T09:38:21.11 0.1 undecidable manual S 110 13.0758 112 0.25 98
IV.GAVE.HNZ. 2023-10-01T09:38:20.00 0.6 negative manual P 276 23.754 94 0.05 49
IV.MMO1.EHZ. 2023-10-01T09:38:20.77 0.6 undecidable manual P 25 27.8499 93 0.21 48
IV.RM33.EHZ. 2023-10-01T09:38:19.14 0.1 positive manual P 172 18.1707 98 0.06 100
IV.NRCA.HNZ. 2023-10-01T09:38:19.21 0.1 negative manual P 342 18.87 97 0.02 100
IV.MTRA.EHZ. 2023-10-01T09:38:19.40 1.0 negative manual P 61 19.6692 96 0.08 25
IV.CAMP.HHZ. 2023-10-01T09:38:19.93 0.6 undecidable manual P 129 23.6541 94 0 50
IV.LNSS.HNZ. 2023-10-01T09:38:18.62 0.6 undecidable manual P 237 13.9749 108 0.16 49
IV.SMA1.EHZ. 2023-10-01T09:38:18.64 0.3 positive manual P 110 13.0758 112 0.32 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:2.7 0.00506 0.28 AML other m 2023-10-01T09:38:21.59
IV.SMA1.EHN. ML:2.6 0.00421 0.34 AML other m 2023-10-01T09:38:21.65
IV.LNSS.HHE. ML:2.4 0.0022949999999999997 0.12 AML other m 2023-10-01T09:38:22.07
IV.LNSS.HHN. ML:2.3 0.00172 1.28 AML other m 2023-10-01T09:38:22.08
IV.RM33.EHN. ML:1.9 0.0006705000000000001 0.36 AML other m 2023-10-01T09:38:22.29
IV.NRCA.HNE. ML:2.7 0.003895 0.12 AML other m 2023-10-01T09:38:22.42
IV.NRCA.HHE. ML:2.8 0.004185 0.14 AML other m 2023-10-01T09:38:22.42
IV.MTRA.HNN. ML:2.4 0.00204 0.16 AML other m 2023-10-01T09:38:22.67
IV.MTRA.EHN. ML:2.5 0.0020499999999999997 0.16 AML other m 2023-10-01T09:38:22.67
IV.MTRA.HNE. ML:2.6 0.0030099999999999997 0.98 AML other m 2023-10-01T09:38:22.79
IV.MTRA.EHE. ML:2.7 0.0034249999999999997 0.98 AML other m 2023-10-01T09:38:22.30
IV.NRCA.HHN. ML:2.9 0.00571 0.08 AML other m 2023-10-01T09:38:22.88
IV.NRCA.HNN. ML:2.9 0.005505000000000001 0.1 AML other m 2023-10-01T09:38:22.89
IV.GAVE.EHN. ML:2.5 0.0018 1.72 AML other m 2023-10-01T09:38:24.87
IV.RM33.EHE. ML:2.0 0.0006995 1.74 AML other m 2023-10-01T09:38:24.12
IV.CAMP.HHE. ML:1.4 0.00016350000000000002 1.2 AML other m 2023-10-01T09:38:24.74
IV.GAVE.HNE. ML:2.4 0.0016699999999999998 0.12 AML other m 2023-10-01T09:38:24.26
IV.GAVE.EHE. ML:2.4 0.001635 0.32 AML other m 2023-10-01T09:38:24.26
IV.CAMP.HHN. ML:1.5 0.00020600000000000002 0.28 AML other m 2023-10-01T09:38:24.87
IV.GAVE.HNN. ML:1.9 0.000479 1.78 AML other m 2023-10-01T09:38:24.08
IV.MMO1.EHN. ML:2.2 0.0007740000000000001 0.62 AML other m 2023-10-01T09:38:25.68
IV.TERO.HHN. ML:1.9 0.0003345 1.02 AML other m 2023-10-01T09:38:27.16
IV.TERO.HHE. ML:2.1 0.0004595 1.18 AML other m 2023-10-01T09:38:27.36
IV.MMO1.EHE. ML:2.1 0.0006975 0.74 AML other m 2023-10-01T09:38:27.50
IV.GIGS.HHE. ML:1.3 0.00007295 0.2 AML other m 2023-10-01T09:38:27.89
IV.GIGS.HHN. ML:1.2 0.00004875 0.24 AML other m 2023-10-01T09:38:29.82
IV.FIAM.HHN. ML:1.8 0.0002055 0.9 AML other m 2023-10-01T09:38:29.84
IV.FIAM.HHE. ML:1.8 0.000201 1.12 AML other m 2023-10-01T09:38:30.77
IV.FDMO.HHN. ML:1.7 0.00017 0.9 AML other m 2023-10-01T09:38:30.68
IV.MF5.EHE. ML:2.3 0.000633 0.42 AML other m 2023-10-01T09:38:30.45
IV.MF5.EHN. ML:2.1 0.0004375 0.36 AML other m 2023-10-01T09:38:30.47
IV.CESI.HHE. ML:1.8 0.000174 0.54 AML other m 2023-10-01T09:38:30.50
IV.FDMO.HHE. ML:1.8 0.0001915 0.26 AML other m 2023-10-01T09:38:30.85
IV.GUMA.HHE. ML:2.8 0.0017549999999999998 1.74 AML other m 2023-10-01T09:38:30.02
IV.GUMA.HNN. ML:2.8 0.001675 0.28 AML other m 2023-10-01T09:38:31.12
IV.GUMA.HHN. ML:2.8 0.00188 0.28 AML other m 2023-10-01T09:38:31.13
IV.GUMA.HNE. ML:2.8 0.001765 0.32 AML other m 2023-10-01T09:38:31.01
IV.CSP1.EHE. ML:2.4 0.0006745 0.42 AML other m 2023-10-01T09:38:31.10
IV.CESI.HHN. ML:2.0 0.000275 0.56 AML other m 2023-10-01T09:38:31.51
IV.CSP1.EHN. ML:2.4 0.000843 1.4 AML other m 2023-10-01T09:38:31.03
IV.MML1.EHN. ML:1.9 0.0001815 0.2 AML other m 2023-10-01T09:38:32.73
IV.CESX.HHE. ML:1.8 0.0001725 1.46 AML other m 2023-10-01T09:38:33.05
IV.CESX.HHN. ML:1.9 0.0002 1.12 AML other m 2023-10-01T09:38:33.95
IV.MOMA.HNE. ML:2.2 0.000356 0.88 AML other m 2023-10-01T09:38:33.29
IV.MOMA.HHE. ML:2.2 0.00038849999999999996 0.26 AML other m 2023-10-01T09:38:33.73
IV.MOMA.HNN. ML:2.2 0.000399 0.98 AML other m 2023-10-01T09:38:33.87
IV.OFFI.HHE. ML:2.5 0.000757 0.42 AML other m 2023-10-01T09:38:34.02
IV.OFFI.HHN. ML:2.3 0.000507 0.42 AML other m 2023-10-01T09:38:34.18
IV.ASSB.HHN. ML:1.9 0.0001595 0.34 AML other m 2023-10-01T09:38:34.47
IV.MOMA.HHN. ML:2.2 0.000345 0.2 AML other m 2023-10-01T09:38:34.48
IV.MML1.EHE. ML:1.7 0.00011434999999999999 1.32 AML other m 2023-10-01T09:38:34.30
IV.ASSB.HHE. ML:1.8 0.00014350000000000002 0.84 AML other m 2023-10-01T09:38:35.54
IV.SNTG.HHE. ML:1.5 0.0000538 1.16 AML other m 2023-10-01T09:38:38.15
IV.T0110.HHN. ML:1.8 0.0001088 0.2 AML other m 2023-10-01T09:38:39.48
IV.T0110.HHE. ML:1.9 0.00014150000000000002 0.3 AML other m 2023-10-01T09:38:40.72
IV.SNTG.HHN. ML:1.6 0.00006905 0.74 AML other m 2023-10-01T09:38:41.56
IV.CING.HHE. ML:1.8 0.00009285000000000001 1.24 AML other m 2023-10-01T09:38:42.19
IV.CING.HHN. ML:1.8 0.00008865 0.6 AML other m 2023-10-01T09:38:42.14
IV.MGAB.HHN. ML:1.8 0.00008165 0.88 AML other m 2023-10-01T09:38:48.94
IV.MGAB.HHE. ML:2.0 0.0001265 0.9 AML other m 2023-10-01T09:38:50.62
IV.FRON.EHE. ML:1.6 0.0000351 0.42 AML other m 2023-10-01T09:38:54.68
IV.FRON.EHN. ML:1.8 0.000052900000000000005 1.38 AML other m 2023-10-01T09:38:57.30
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
Waveforms Seismic signals in miniseed + resp format Download