Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 03-04-2024 and time 13:30:34 (Italy) in region 4 km E Spoleto (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km E Spoleto (PG), on

  • 03-04-2024 11:30:34 (UTC)
  • 03-04-2024 13:30:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7470, 12.7860 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.

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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 4 38218 38218
Sant'Anatolia di Narco PG 4 564 38782
Scheggino PG 5 461 39243
Vallo di Nera PG 7 364 39607
Campello sul Clitunno PG 8 2442 42049
Castel Ritaldi PG 13 3278 45327
Poggiodomo PG 13 117 45444
Cerreto di Spoleto PG 14 1075 46519
Ferentillo TR 14 1913 48432
Trevi PG 15 8469 56901
Montefranco TR 17 1276 58177
Monteleone di Spoleto PG 17 599 58776
Arrone TR 18 2763 61539
Polino TR 19 233 61772
Cascia PG 19 3217 64989
Giano dell'Umbria PG 20 3846 68835
Sellano PG 20 1079 69914
Montefalco PG 20 5679 75593

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Terni (111501 inhabitants)
24 Km S of Foligno (57155 inhabitants)
52 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
76 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 1.1 2024-04-03
11:30:34		 42.747 12.7858 10 2024-04-03
11:36:16		 Sala Sismica INGV-Roma 126440801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-03 11:30:34 ± 0.05
Latitude 42.7470 ± 0.0045
Longitude 12.7858 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126440801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 546
Semi-minor axis of confidence ellipse (meter) 243
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36423
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 126440801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-03 11:36:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2024-04-03T11:30:56.84 3.0 undecidable manual P -0.89 0
IV.SNTG.HHZ. 2024-04-03T11:30:51.12 3.0 undecidable manual S -0.66 0
IV.CESI.HHZ. 2024-04-03T11:30:44.93 0.3 undecidable manual S 19 30.2475 50 -0.09 72
IV.NRCA.HHZ. 2024-04-03T11:30:44.65 0.3 undecidable manual S 70 28.4493 50 0.11 72
IV.LNSS.HHZ. 2024-04-03T11:30:43.95 0.3 undecidable manual S 128 26.1516 50 0 74
IV.CSP1.EHZ. 2024-04-03T11:30:43.76 3.0 negative manual P 0.61 0
IV.RM33.EHZ. 2024-04-03T11:30:42.75 3.0 negative manual P -0.4 0
IV.FDMO.HHZ. 2024-04-03T11:30:42.32 0.3 undecidable manual P 37 40.4262 50 0.27 68
IV.MOMA.HHZ. 2024-04-03T11:30:41.59 0.3 undecidable manual S 290 18.6702 118 -0.04 74
IV.NRCA.HHZ. 2024-04-03T11:30:40.18 0.1 undecidable manual P 70 28.4493 50 -0.02 98
IV.CESI.HHZ. 2024-04-03T11:30:40.30 0.1 undecidable manual P 19 30.2475 50 -0.18 94
IV.GAVE.EHZ. 2024-04-03T11:30:39.38 0.3 undecidable manual S 124 10.6782 133 0 76
IV.LNSS.HHZ. 2024-04-03T11:30:39.81 0.3 undecidable manual P 128 26.1516 50 -0.05 73
IV.MOMA.HHZ. 2024-04-03T11:30:38.63 0.1 undecidable manual P 290 18.6702 118 0.11 98
IV.GAVE.EHZ. 2024-04-03T11:30:37.16 0.1 undecidable manual P 124 10.6782 133 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.4 0.000299 0.1 AML other m 2024-04-03T11:30:39.63
IV.GAVE.EHN. ML:1.3 0.0002205 0.54 AML other m 2024-04-03T11:30:40.08
IV.MOMA.HHE. ML:1.0 0.0000774 1.32 AML other m 2024-04-03T11:30:41.71
IV.MOMA.HHN. ML:1.0 0.00007235 1.24 AML other m 2024-04-03T11:30:42.17
IV.LNSS.HHN. ML:1.2 0.0001008 1.04 AML other m 2024-04-03T11:30:44.04
IV.LNSS.HHE. ML:1.2 0.00009735 1.28 AML other m 2024-04-03T11:30:44.90
IV.NRCA.HHN. ML:1.0 0.00005715 0.12 AML other m 2024-04-03T11:30:46.18
IV.NRCA.HHE. ML:1.0 0.0000511 0.1 AML other m 2024-04-03T11:30:46.37
IV.SNTG.HHE. ML:0.8 0.000017049999999999998 0.44 AML other m 2024-04-03T11:30:50.07
IV.SNTG.HHN. ML:1.1 0.00002615 0.82 AML other m 2024-04-03T11:30:50.49
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