Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 07-12-2023 and time 01:55:51 (Italy) in region 2 km NE Spoleto (PG)

A magnitude ML 1.9 earthquake occured in region: 2 km NE Spoleto (PG), on

  • 07-12-2023 00:55:51 (UTC)
  • 07-12-2023 01:55:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7500, 12.7570 at 7 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
Spoleto PG 2 38218 38218
Sant'Anatolia di Narco PG 7 564 38782
Scheggino PG 7 461 39243
Campello sul Clitunno PG 8 2442 41685
Vallo di Nera PG 9 364 42049
Castel Ritaldi PG 11 3278 45327
Trevi PG 14 8469 53796
Ferentillo TR 15 1913 55709
Poggiodomo PG 15 117 55826
Cerreto di Spoleto PG 15 1075 56901
Montefranco TR 17 1276 58177
Giano dell'Umbria PG 17 3846 62023
Montefalco PG 18 5679 67702
Acquasparta TR 18 4778 72480
Arrone TR 18 2763 75243
Massa Martana PG 19 3770 79013
Monteleone di Spoleto PG 19 599 79612
Polino TR 20 233 79845

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Terni (111501 inhabitants)
23 Km S of Foligno (57155 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
83 Km N of Guidonia Montecelio (88673 inhabitants)
87 Km N of Tivoli (56533 inhabitants)
98 Km N of Roma (2864731 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 1.9 2023-12-07
00:55:51		 42.7495 12.7572 7 2023-12-07
01:40:09		 Sala Sismica INGV-Roma 123862851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-07 00:55:51 ± 0.07
Latitude 42.7495 ± 0.0036
Longitude 12.7572 ± 0.0049
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123862851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 373
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 132
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.63132
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 123862851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-07 01:40:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERT.HHZ. 2023-12-07T00:56:20.86 3.0 undecidable manual S 0.15 0
IV.CING.HHZ. 2023-12-07T00:56:16.80 3.0 undecidable manual S -0.17 0
IV.EL6.EHZ. 2023-12-07T00:56:14.15 0.6 undecidable manual S 23 70.0743 50 0.45 43
IV.MF5.EHZ. 2023-12-07T00:56:13.00 0.6 undecidable manual S 65 62.8926 50 1.22 32
IV.GUMA.HHZ. 2023-12-07T00:56:11.29 0.3 undecidable manual S 53 58.3971 50 0.71 61
IV.FIAM.HHZ. 2023-12-07T00:56:11.44 3.0 undecidable manual S -0.46 0
IV.CSP1.EHZ. 2023-12-07T00:56:09.00 0.6 undecidable manual S 44 52.6029 50 -0.02 49
IV.FAGN.HHZ. 2023-12-07T00:56:08.29 3.0 positive manual P 0.97 0
IV.PIEI.HHZ. 2023-12-07T00:56:08.88 3.0 positive manual P 1.09 0
IV.SMA1.EHZ. 2023-12-07T00:56:08.07 0.6 undecidable manual S 105 48.9177 50 0.02 49
IV.ATMI.HHZ. 2023-12-07T00:56:07.88 3.0 negative manual P 2.25 0
IV.MMO1.EHZ. 2023-12-07T00:56:07.93 0.6 undecidable manual S 70 49.2174 50 -0.2 48
IV.RM33.EHZ. 2023-12-07T00:56:06.97 0.6 undecidable manual S 125 45.9207 50 -0.26 47
IV.CING.HHZ. 2023-12-07T00:56:05.66 3.0 positive manual P -0.27 0
IV.FDMO.HHZ. 2023-12-07T00:56:05.92 1.0 undecidable manual S 40 41.625 50 -0.18 24
IV.EL6.EHZ. 2023-12-07T00:56:04.18 0.3 undecidable manual P 23 70.0743 50 -0.23 68
IV.SACS.HHE. 2023-12-07T00:56:04.95 0.6 undecidable manual P 279 69.8745 50 0.58 42
IV.TERO.HHZ. 2023-12-07T00:56:04.03 3.0 negative manual P -0.65 0
IV.MF5.EHZ. 2023-12-07T00:56:03.55 0.3 undecidable manual P 65 62.8926 50 0.25 69
IV.ASSB.HHZ. 2023-12-07T00:56:03.65 0.6 undecidable manual S 346 33.4443 102 0.04 51
IV.SNTG.HHZ. 2023-12-07T00:56:03.08 3.0 positive manual P 0.49 0
IV.NRCA.HHZ. 2023-12-07T00:56:02.45 0.6 undecidable manual S 72 30.5472 104 -0.16 50
IV.CESI.HHZ. 2023-12-07T00:56:02.63 0.6 undecidable manual S 23 30.747 104 -0.06 51
IV.GUMA.HHZ. 2023-12-07T00:56:02.71 0.3 undecidable manual P 53 58.3971 50 0.1 72
IV.FIAM.HHZ. 2023-12-07T00:56:02.92 3.0 negative manual P -0.16 0
IV.FOSV.EHZ. 2023-12-07T00:56:02.94 3.0 positive manual P -0.07 0
IV.SMA1.EHZ. 2023-12-07T00:56:01.08 0.1 undecidable manual P 105 48.9177 50 -0.06 98
IV.CSP1.EHZ. 2023-12-07T00:56:01.42 0.1 undecidable manual P 44 52.6029 50 -0.28 93
IV.LNSS.HHZ. 2023-12-07T00:56:01.85 0.6 undecidable manual S 125 28.2495 105 0 51
IV.ATCC.EHZ. 2023-12-07T00:56:01.71 3.0 negative manual P 0.57 0
IV.MMO1.EHZ. 2023-12-07T00:56:00.81 0.1 negative manual P 70 49.2174 50 -0.38 92
IV.MML1.EHZ. 2023-12-07T00:56:00.03 3.0 negative manual P -0.21 0
IV.RM33.EHZ. 2023-12-07T00:56:00.32 0.3 undecidable manual P 125 45.9207 50 -0.35 70
IV.FDMO.HHZ. 2023-12-07T00:55:59.58 0.3 undecidable manual P 40 41.625 50 -0.44 69
IV.CESX.HHZ. 2023-12-07T00:55:59.10 0.6 undecidable manual S 222 20.9679 109 -0.32 49
IV.MOMA.HHZ. 2023-12-07T00:55:58.01 0.6 undecidable manual S 292 16.3725 114 0.05 52
IV.ARRO.EHZ. 2023-12-07T00:55:58.62 0.6 undecidable manual S 178 18.87 111 -0.14 51
IV.ASSB.HHZ. 2023-12-07T00:55:58.39 0.1 positive manual P 346 33.4443 102 -0.19 98
IV.LNSS.HHZ. 2023-12-07T00:55:57.52 0.3 undecidable manual P 125 28.2495 105 -0.04 77
IV.NRCA.HHZ. 2023-12-07T00:55:57.83 0.1 negative manual P 72 30.5472 104 -0.18 99
IV.CESI.HHZ. 2023-12-07T00:55:57.93 0.1 undecidable manual P 23 30.747 104 -0.12 100
IV.GAVE.EHZ. 2023-12-07T00:55:57.21 0.1 undecidable manual S 120 12.876 120 0.35 98
IV.ARRO.EHZ. 2023-12-07T00:55:56.06 0.3 undecidable manual P 178 18.87 111 0.28 74
IV.CESX.HHZ. 2023-12-07T00:55:56.28 0.6 undecidable manual P 222 20.9679 109 0.12 51
IV.MOMA.HHZ. 2023-12-07T00:55:55.56 0.1 positive manual P 292 16.3725 114 0.24 100
IV.GAVE.EHZ. 2023-12-07T00:55:54.80 0.3 undecidable manual P 120 12.876 120 0.12 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.HNE. ML:2.4 0.0027949999999999997 0.18 AML other m 2023-12-07T00:55:58.09
IV.GAVE.EHE. ML:2.4 0.0027949999999999997 0.16 AML other m 2023-12-07T00:55:58.10
IV.GAVE.HNN. ML:1.8 0.000746 0.2 AML other m 2023-12-07T00:55:58.65
IV.GAVE.EHN. ML:2.3 0.002355 0.18 AML other m 2023-12-07T00:55:58.56
IV.MOMA.HHE. ML:2.0 0.000909 0.24 AML other m 2023-12-07T00:55:59.62
IV.MOMA.HNE. ML:1.9 0.000798 0.16 AML other m 2023-12-07T00:55:59.54
IV.MOMA.HNN. ML:1.7 0.0005225 0.28 AML other m 2023-12-07T00:55:59.50
IV.MOMA.HHN. ML:1.8 0.0006125000000000001 0.14 AML other m 2023-12-07T00:55:59.84
IV.ARRO.EHN. ML:1.7 0.00042699999999999997 1.24 AML other m 2023-12-07T00:56:01.07
IV.CESX.HHE. ML:1.8 0.000448 0.54 AML other m 2023-12-07T00:56:01.65
IV.CESX.HHN. ML:1.8 0.000508 0.94 AML other m 2023-12-07T00:56:01.96
IV.LNSS.HHE. ML:2.3 0.0010500000000000002 0.62 AML other m 2023-12-07T00:56:02.25
IV.LNSS.HNE. ML:2.3 0.00107 0.6 AML other m 2023-12-07T00:56:02.26
IV.CESI.HHN. ML:2.1 0.0005755000000000001 0.24 AML other m 2023-12-07T00:56:02.84
IV.ARRO.EHE. ML:1.7 0.000424 1.72 AML other m 2023-12-07T00:56:02.07
IV.NRCA.HHE. ML:1.9 0.0004035 1.54 AML other m 2023-12-07T00:56:03.82
IV.LNSS.HNN. ML:2.2 0.0009159999999999999 0.42 AML other m 2023-12-07T00:56:03.12
IV.CESI.HHE. ML:1.8 0.000317 1.14 AML other m 2023-12-07T00:56:03.96
IV.NRCA.HHN. ML:1.8 0.000328 0.14 AML other m 2023-12-07T00:56:03.79
IV.LNSS.HHN. ML:2.3 0.0010075 1.62 AML other m 2023-12-07T00:56:03.12
IV.ASSB.HHE. ML:1.8 0.000264 0.24 AML other m 2023-12-07T00:56:04.27
IV.ASSB.HHN. ML:1.8 0.000285 0.52 AML other m 2023-12-07T00:56:05.28
IV.FDMO.HHE. ML:1.8 0.0001945 0.38 AML other m 2023-12-07T00:56:06.32
IV.MML1.EHN. ML:1.6 0.00012220000000000002 0.18 AML other m 2023-12-07T00:56:07.15
IV.MML1.EHE. ML:1.8 0.00019250000000000002 0.58 AML other m 2023-12-07T00:56:07.75
IV.FDMO.HHN. ML:1.6 0.0001395 0.96 AML other m 2023-12-07T00:56:08.62
IV.MMO1.EHE. ML:1.8 0.0001705 0.78 AML other m 2023-12-07T00:56:08.55
IV.RM33.EHE. ML:1.8 0.00019600000000000002 0.16 AML other m 2023-12-07T00:56:08.71
IV.MMO1.EHN. ML:1.7 0.0001465 0.24 AML other m 2023-12-07T00:56:09.40
IV.SMA1.EHE. ML:2.0 0.000297 0.74 AML other m 2023-12-07T00:56:09.57
IV.RM33.EHN. ML:1.9 0.0002285 0.42 AML other m 2023-12-07T00:56:10.25
IV.SMA1.EHN. ML:1.9 0.00021600000000000002 1.54 AML other m 2023-12-07T00:56:10.16
IV.CSP1.EHN. ML:2.2 0.0003675 0.44 AML other m 2023-12-07T00:56:10.42
IV.ATCC.EHE. ML:1.7 0.00014350000000000002 1.54 AML other m 2023-12-07T00:56:11.10
IV.ATCC.EHN. ML:1.8 0.0001565 0.54 AML other m 2023-12-07T00:56:11.85
IV.SNTG.HHE. ML:1.3 0.000047350000000000006 1.02 AML other m 2023-12-07T00:56:12.23
IV.GUMA.HHE. ML:2.2 0.0003005 1.62 AML other m 2023-12-07T00:56:14.16
IV.FOSV.EHN. ML:1.4 0.00005645 0.62 AML other m 2023-12-07T00:56:15.96
IV.GUMA.HHN. ML:2.1 0.00027350000000000003 0.34 AML other m 2023-12-07T00:56:16.07
IV.CING.HHE. ML:1.7 0.00006945 1.48 AML other m 2023-12-07T00:56:17.10
IV.CSP1.EHE. ML:2.2 0.00037944395 6.26 AML other m 2023-12-07T00:56:09.61
IV.SNTG.HHN. ML:1.4 0.000056022775 2.3992 AML other m 2023-12-07T00:56:13.84
IV.FOSV.EHE. ML:1.5 0.00006256856999999999 7.18 AML other m 2023-12-07T00:56:16.74
IV.CING.HHN. ML:1.6 0.000059050000000000006 1.28 AML other m 2023-12-07T00:56:35.82
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