Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 11-09-2024 and time 06:51:54 (UTC) in region 1 km SE Spoleto (PG)

A magnitude ML 1.0 earthquake occured in region: 1 km SE Spoleto (PG), on

  • 11-09-2024 06:51:54 (UTC)
  • 11-09-2024 08:51:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7250, 12.7510 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
Spoleto PG 2 38218 38218
Scheggino PG 7 461 38679
Sant'Anatolia di Narco PG 7 564 39243
Vallo di Nera PG 10 364 39607
Campello sul Clitunno PG 11 2442 42049
Ferentillo TR 12 1913 43962
Castel Ritaldi PG 13 3278 47240
Montefranco TR 14 1276 48516
Poggiodomo PG 15 117 48633
Arrone TR 16 2763 51396
Trevi PG 17 8469 59865
Acquasparta TR 17 4778 64643
Cerreto di Spoleto PG 17 1075 65718
Polino TR 17 233 65951
Monteleone di Spoleto PG 18 599 66550
Giano dell'Umbria PG 19 3846 70396
Massa Martana PG 19 3770 74166

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NE of Terni (111501 inhabitants)
26 Km S of Foligno (57155 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
63 Km NE of Viterbo (67173 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
81 Km N of Guidonia Montecelio (88673 inhabitants)
85 Km N of Tivoli (56533 inhabitants)
95 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 1.0 2024-09-11
06:51:54		 42.7253 12.751 11 2024-09-11
06:57:51		 Sala Sismica INGV-Roma 131353341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-09-11 06:51:54 ± 0.08
Latitude 42.7253 ± 0.0054
Longitude 12.7510 ± 0.0061
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 131353341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 701
Semi-minor axis of confidence ellipse (meter) 322
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 220
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
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 18
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41998
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 131353341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-09-11 06:57:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2024-09-11T06:52:38.29 3.0 undecidable manual S 0.07 0
IV.SFI.EHZ. 2024-09-11T06:52:38.60 3.0 undecidable manual S -0.24 0
IV.LPEL.HHZ. 2024-09-11T06:52:19.86 3.0 undecidable manual P 0.7 0
IV.MML1.EHZ. 2024-09-11T06:52:09.85 0.3 undecidable manual S 23 46.62 50 0.15 69
IV.FDMO.HHZ. 2024-09-11T06:52:09.09 0.6 undecidable manual S 38 44.0226 50 0.09 47
IV.ASSB.HHZ. 2024-09-11T06:52:06.96 0.6 undecidable manual S 348 35.9418 50 0.11 47
IV.NRCA.HHZ. 2024-09-11T06:52:05.63 0.6 undecidable manual S 68 31.9458 50 -0.14 47
IV.LNSS.HNE. 2024-09-11T06:52:04.70 0.6 undecidable manual S 120 27.2505 50 0.18 47
IV.FDMO.HHZ. 2024-09-11T06:52:03.34 1.0 undecidable manual P 38 44.0226 50 0.37 22
IV.MML1.EHZ. 2024-09-11T06:52:03.28 0.1 undecidable manual P 23 46.62 50 -0.09 93
IV.MOMA.HHZ. 2024-09-11T06:52:01.56 0.6 undecidable manual S 301 17.0718 122 -0.18 48
IV.ASSB.HHZ. 2024-09-11T06:52:01.76 0.1 undecidable manual P 348 35.9418 50 0.03 96
IV.GAVE.EHZ. 2024-09-11T06:52:00.46 0.6 undecidable manual S 107 12.2766 131 0.08 49
IV.NRCA.HHZ. 2024-09-11T06:52:00.93 0.1 undecidable manual P 68 31.9458 50 -0.17 94
IV.LNSS.HNE. 2024-09-11T06:52:00.20 0.1 undecidable manual P 120 27.2505 50 -0.18 94
IV.ARRO.EHZ. 2024-09-11T06:51:59.28 1.0 positive manual P 176 16.2726 123 0.65 21
IV.MOMA.HHZ. 2024-09-11T06:51:58.82 0.6 negative manual P 301 17.0718 122 0.05 49
IV.GAVE.EHZ. 2024-09-11T06:51:57.97 0.1 undecidable manual P 107 12.2766 131 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:1.0 0.00009115 0.36 AML other m 2024-09-11T06:52:02.38
IV.ARRO.EHE. ML:0.7 0.0000458 0.6 AML other m 2024-09-11T06:52:03.53
IV.MOMA.HHE. ML:1.1 0.0000936 0.54 AML other m 2024-09-11T06:52:03.63
IV.ARRO.EHN. ML:0.7 0.000045549999999999996 1.58 AML other m 2024-09-11T06:52:03.19
IV.NRCA.HHE. ML:1.1 0.000055849999999999996 1.46 AML other m 2024-09-11T06:52:06.14
IV.NRCA.HHN. ML:1.2 0.00006875 0.62 AML other m 2024-09-11T06:52:06.51
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