Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 03-03-2024 and time 09:43:40 (Italy) in region 5 km N Spoleto (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km N Spoleto (PG), on

  • 03-03-2024 08:43:40 (UTC)
  • 03-03-2024 09:43:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7770, 12.7350 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 5 38218 38218
Campello sul Clitunno PG 6 2442 40660
Castel Ritaldi PG 7 3278 43938
Sant'Anatolia di Narco PG 10 564 44502
Vallo di Nera PG 11 364 44866
Scheggino PG 11 461 45327
Trevi PG 11 8469 53796
Giano dell'Umbria PG 14 3846 57642
Montefalco PG 15 5679 63321
Cerreto di Spoleto PG 16 1075 64396
Massa Martana PG 17 3770 68166
Ferentillo TR 18 1913 70079
Poggiodomo PG 18 117 70196
Acquasparta TR 18 4778 74974

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Foligno (57155 inhabitants)
25 Km N of Terni (111501 inhabitants)
46 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
86 Km N of Guidonia Montecelio (88673 inhabitants)
91 Km N of Tivoli (56533 inhabitants)
100 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 1.1 2024-03-03
08:43:40		 42.7772 12.735 11 2024-03-03
08:52:45		 Sala Sismica INGV-Roma 125672011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-03 08:43:40 ± 0.04
Latitude 42.7772 ± 0.0018
Longitude 12.7350 ± 0.0037
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 125672011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 256
Semi-minor axis of confidence ellipse (meter) 189
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 240
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.12411
Epicentral distance of station farthest from the epicenter (degree) 0.46585
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 125672011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-03 08:52:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2024-03-03T08:43:56.90 0.3 undecidable manual S 47 51.7038 50 0.25 67
IV.FDMO.HHZ. 2024-03-03T08:43:53.60 0.3 undecidable manual S 45 40.626 50 -0.08 71
IV.LNSS.HHZ. 2024-03-03T08:43:51.10 0.3 undecidable manual S 128 31.5462 50 -0.16 71
IV.NRCA.HHZ. 2024-03-03T08:43:51.20 0.3 undecidable manual S 78 31.4463 50 -0.05 73
IV.ASSB.HHZ. 2024-03-03T08:43:50.80 0.3 undecidable manual S 348 30.1476 50 -0.08 72
IV.CESI.HHZ. 2024-03-03T08:43:50.30 0.3 undecidable manual S 29 28.749 50 -0.23 70
IV.CSP1.EHZ. 2024-03-03T08:43:49.79 0.3 undecidable manual P 47 51.7038 50 0.02 70
IV.ARRO.EHZ. 2024-03-03T08:43:48.83 0.3 undecidable manual S 173 22.0668 50 0.09 73
IV.FDMO.HHZ. 2024-03-03T08:43:48.15 0.3 undecidable manual P 45 40.626 50 0.1 71
IV.GAVE.EHZ. 2024-03-03T08:43:47.00 0.3 undecidable manual S 126 16.0728 124 -0.1 74
IV.CESI.HHZ. 2024-03-03T08:43:46.34 0.1 undecidable manual P 29 28.749 50 0.11 96
IV.MOMA.HHZ. 2024-03-03T08:43:46.40 0.6 undecidable manual S 283 13.7751 129 -0.07 50
IV.NRCA.HHZ. 2024-03-03T08:43:46.59 0.3 undecidable manual P 78 31.4463 50 -0.06 72
IV.ASSB.HHZ. 2024-03-03T08:43:46.51 0.1 undecidable manual P 348 30.1476 50 0.08 96
IV.LNSS.HHZ. 2024-03-03T08:43:46.71 0.3 undecidable manual P 128 31.5462 50 0.06 72
IV.ARRO.EHZ. 2024-03-03T08:43:45.16 0.1 undecidable manual P 173 22.0668 50 -0.04 99
IV.GAVE.EHZ. 2024-03-03T08:43:44.38 0.1 undecidable manual P 126 16.0728 124 0.13 98
IV.MOMA.HHZ. 2024-03-03T08:43:43.85 0.1 undecidable manual P 283 13.7751 129 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:1.2 0.00016999999999999999 0.28 AML other m 2024-03-03T08:43:46.59
IV.MOMA.HHN. ML:1.1 0.00011899999999999999 0.24 AML other m 2024-03-03T08:43:46.92
IV.GAVE.EHE. ML:1.2 0.000148 0.4 AML other m 2024-03-03T08:43:47.61
IV.GAVE.EHN. ML:1.1 0.00010125000000000001 0.16 AML other m 2024-03-03T08:43:47.78
IV.NRCA.HHE. ML:1.0 0.00004555 0.5 AML other m 2024-03-03T08:43:53.11
IV.NRCA.HHN. ML:0.7 0.0000242 0.42 AML other m 2024-03-03T08:43:56.26
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