Earthquake with magnitude of ML 1.6 on date 25-05-2023 and time 18:58:11 (Italy) in region 4 km NW Spoleto (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km NW Spoleto (PG), on

  • 25-05-2023 16:58:11 (UTC)
  • 25-05-2023 18:58:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7620, 12.7100 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.

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 4 38218 38218
Castel Ritaldi PG 8 3278 41496
Campello sul Clitunno PG 9 2442 43938
Sant'Anatolia di Narco PG 11 564 44502
Scheggino PG 11 461 44963
Vallo di Nera PG 13 364 45327
Trevi PG 13 8469 53796
Giano dell'Umbria PG 14 3846 57642
Massa Martana PG 15 3770 61412
Acquasparta TR 16 4778 66190
Montefalco PG 16 5679 71869
Ferentillo TR 17 1913 73782
Cerreto di Spoleto PG 18 1075 74857
Montefranco TR 19 1276 76133
Poggiodomo PG 19 117 76250

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km S of Foligno (57155 inhabitants)
23 Km N of Terni (111501 inhabitants)
47 Km SE of Perugia (166134 inhabitants)
63 Km NE of Viterbo (67173 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
82 Km W of Teramo (54892 inhabitants)
85 Km N of Guidonia Montecelio (88673 inhabitants)
89 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 1.6 2023-05-25
16:58:11
42.7623 12.7102 10 2023-05-25
17:12:29
Sala Sismica INGV-Roma 117724051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-25 16:58:11 ± 0.07
Latitude 42.7623 ± 0.0054
Longitude 12.7102 ± 0.0086
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117724051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 833
Semi-minor axis of confidence ellipse (meter) 359
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 35
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.11062
Epicentral distance of station farthest from the epicenter (degree) 0.63492
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 117724051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-25 17:12:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2023-05-25T16:58:33.71 0.6 undecidable manual S 27 70.4739 50 0.81 36
IV.MURB.HNN. 2023-05-25T16:58:30.43 1.0 undecidable manual S 345 57.498 50 0.97 17
IV.SNTG.HNE. 2023-05-25T16:58:30.19 0.6 undecidable manual S 19 57.7977 50 0.68 39
IV.CSP1.EHZ. 2023-05-25T16:58:28.94 0.3 undecidable manual S 48 54.3012 50 0.34 66
IV.RM33.EHZ. 2023-05-25T16:58:28.00 0.6 undecidable manual S 124 49.8168 50 0.59 41
IV.SMA1.EHZ. 2023-05-25T16:58:28.51 1.0 undecidable manual S 106 53.0025 50 0.26 22
IV.ATCC.EHE. 2023-05-25T16:58:27.13 0.3 undecidable manual S 353 47.2194 50 0.42 65
IV.MML1.EHZ. 2023-05-25T16:58:26.41 0.3 undecidable manual S 29 44.3223 50 0.47 65
IV.FDMO.HHZ. 2023-05-25T16:58:25.73 0.6 undecidable manual S 45 43.2234 50 0.11 47
IV.ATVA.EHN. 2023-05-25T16:58:23.14 0.3 undecidable manual P 329 66.7776 50 -0.08 68
IV.EL6.EHZ. 2023-05-25T16:58:23.76 0.3 undecidable manual P 27 70.4739 50 -0.02 68
IV.NRCA.HHZ. 2023-05-25T16:58:23.19 0.6 undecidable manual S 76 33.8439 50 0.06 48
IV.ASSB.HHZ. 2023-05-25T16:58:22.24 0.3 undecidable manual S 352 31.3464 50 -0.23 70
IV.LNSS.HHZ. 2023-05-25T16:58:22.37 0.3 undecidable manual S 123 32.2455 50 -0.33 68
IV.SMA1.EHZ. 2023-05-25T16:58:21.25 0.3 positive manual P 106 53.0025 50 0.16 68
IV.CESI.HHZ. 2023-05-25T16:58:21.97 0.3 undecidable manual S 30 31.2465 50 -0.46 67
IV.CSP1.EHZ. 2023-05-25T16:58:21.07 0.6 undecidable manual P 48 54.3012 50 -0.22 45
IV.MURB.HNN. 2023-05-25T16:58:21.95 0.6 undecidable manual P 345 57.498 50 0.16 45
IV.SNTG.HNE. 2023-05-25T16:58:21.35 0.3 undecidable manual P 19 57.7977 50 -0.47 63
IV.RM33.EHZ. 2023-05-25T16:58:20.39 0.3 undecidable manual P 124 49.8168 50 -0.21 68
IV.ATCC.EHE. 2023-05-25T16:58:20.33 0.6 undecidable manual P 353 47.2194 50 0.13 46
IV.FDMO.HHZ. 2023-05-25T16:58:19.37 0.3 undecidable manual P 45 43.2234 50 -0.2 69
IV.ARRO.EHZ. 2023-05-25T16:58:19.84 0.6 undecidable manual S 167 20.868 115 0.58 43
IV.MML1.EHZ. 2023-05-25T16:58:19.59 0.3 undecidable manual P 29 44.3223 50 -0.17 69
IV.GAVE.EHZ. 2023-05-25T16:58:18.04 0.3 undecidable manual S 117 16.872 120 -0.01 75
IV.LNSS.HHZ. 2023-05-25T16:58:17.62 0.1 undecidable manual P 123 32.2455 50 -0.26 92
IV.NRCA.HHZ. 2023-05-25T16:58:17.86 0.1 undecidable manual P 76 33.8439 50 -0.28 92
IV.ASSB.HHZ. 2023-05-25T16:58:17.40 0.1 undecidable manual P 352 31.3464 50 -0.35 91
IV.CESI.HHZ. 2023-05-25T16:58:17.50 0.1 undecidable manual P 30 31.2465 50 -0.23 93
IV.ARRO.EHZ. 2023-05-25T16:58:16.30 0.3 undecidable manual P 167 20.868 115 0.4 69
IV.MOMA.HHZ. 2023-05-25T16:58:16.58 0.3 undecidable manual S 292 12.2766 128 -0.14 74
IT.GNU.HGN. 2023-05-25T16:58:16.83 0.3 undecidable manual S 292 12.2766 128 0.12 74
IV.GAVE.EHZ. 2023-05-25T16:58:15.12 0.3 undecidable manual P 117 16.872 120 -0.08 74
IT.GNU.HGN. 2023-05-25T16:58:14.41 0.3 undecidable manual P 292 12.2766 128 -0.02 75
IV.MOMA.HHZ. 2023-05-25T16:58:14.48 0.1 negative manual P 292 12.2766 128 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.4 0.0002725 1.48 AML other m 2023-05-25T16:58:17.18
IV.MOMA.HNN. ML:1.7 0.0005605 1.48 AML other m 2023-05-25T16:58:17.19
IV.MOMA.HHE. ML:1.8 0.000721 0.18 AML other m 2023-05-25T16:58:19.87
IV.MOMA.HNE. ML:1.8 0.0006779999999999999 0.16 AML other m 2023-05-25T16:58:19.87
IV.ARRO.EHE. ML:1.5 0.000203 0.58 AML other m 2023-05-25T16:58:21.05
IV.CESI.HHN. ML:1.8 0.0002605 0.4 AML other m 2023-05-25T16:58:22.77
IV.LNSS.HHE. ML:2.0 0.00045499999999999995 0.2 AML other m 2023-05-25T16:58:23.14
IV.LNSS.HHN. ML:1.8 0.00029700000000000006 0.18 AML other m 2023-05-25T16:58:23.27
IV.ASSB.HHE. ML:1.5 0.000141 0.64 AML other m 2023-05-25T16:58:23.55
IV.NRCA.HHN. ML:1.5 0.000128 1.36 AML other m 2023-05-25T16:58:24.26
IV.ASSB.HHN. ML:1.5 0.0001525 0.56 AML other m 2023-05-25T16:58:24.26
IV.CESI.HHE. ML:1.4 0.00011350000000000001 0.62 AML other m 2023-05-25T16:58:24.49
IV.NRCA.HHE. ML:1.6 0.00015300000000000003 0.14 AML other m 2023-05-25T16:58:24.82
IV.ARRO.EHN. ML:1.3 0.000146 0.92 AML other m 2023-05-25T16:58:25.65
IV.FDMO.HHE. ML:1.2 0.00005615 0.36 AML other m 2023-05-25T16:58:26.73
IV.FDMO.HHN. ML:1.2 0.0000533 0.74 AML other m 2023-05-25T16:58:29.43
IV.CSP1.EHN. ML:1.7 0.00012685000000000002 0.76 AML other m 2023-05-25T16:58:29.72
IV.CSP1.EHE. ML:1.9 0.00017649999999999998 0.48 AML other m 2023-05-25T16:58:29.76
IV.RM33.EHE. ML:1.5 0.00007819999999999999 1.72 AML other m 2023-05-25T16:58:29.12
IV.RM33.EHN. ML:1.4 0.0000586 0.42 AML other m 2023-05-25T16:58:30.20
IV.SMA1.EHE. ML:1.7 0.0001285 0.3 AML other m 2023-05-25T16:58:30.76
IV.SMA1.EHN. ML:1.6 0.00009010000000000001 1.56 AML other m 2023-05-25T16:58:31.89
IV.CELB.HHN. ML:2.8 0.00016549999999999998 0.08 AML other m 2023-05-25T16:59:10.62
IV.CELB.HHE. ML:2.6 0.000125 0.06 AML other m 2023-05-25T16:59:10.67
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