Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 04-04-2024 and time 20:54:05 (UTC) in region 4 km E Spoleto (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km E Spoleto (PG), on

  • 04-04-2024 20:54:05 (UTC)
  • 04-04-2024 22:54:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7510, 12.7780 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 5 564 38782
Scheggino PG 6 461 39243
Vallo di Nera PG 7 364 39607
Campello sul Clitunno PG 8 2442 42049
Castel Ritaldi PG 12 3278 45327
Poggiodomo PG 14 117 45444
Cerreto di Spoleto PG 14 1075 46519
Ferentillo TR 14 1913 48432
Trevi PG 14 8469 56901
Montefranco TR 17 1276 58177
Monteleone di Spoleto PG 18 599 58776
Arrone TR 19 2763 61539
Giano dell'Umbria PG 19 3846 65385
Montefalco PG 19 5679 71064
Polino TR 19 233 71297
Cascia PG 20 3217 74514
Sellano PG 20 1079 75593
Acquasparta TR 20 4778 80371

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Terni (111501 inhabitants)
24 Km S of Foligno (57155 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
66 Km NE of Viterbo (67173 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
77 Km W of Teramo (54892 inhabitants)
84 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 1.5 2024-04-04
20:54:05		 42.7507 12.7778 10 2024-04-04
21:04:47		 Sala Sismica INGV-Roma 126481971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-04 20:54:05 ± 0.04
Latitude 42.7507 ± 0.0018
Longitude 12.7778 ± 0.0024
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 126481971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 240
Semi-minor axis of confidence ellipse (meter) 209
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 336
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 19
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40200
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 126481971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-04 21:04:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERT.HHZ. 2024-04-04T20:54:33.86 3.0 undecidable manual S -0.18 0
IV.ARVD.HHZ. 2024-04-04T20:54:32.22 3.0 undecidable manual S 0.23 0
IV.CING.HHZ. 2024-04-04T20:54:29.95 3.0 undecidable manual S -0.03 0
IV.FIAM.HHZ. 2024-04-04T20:54:23.61 3.0 undecidable manual S -1.49 0
IV.ARVD.HHZ. 2024-04-04T20:54:20.10 3.0 negative manual P -0.13 0
IV.RM33.EHZ. 2024-04-04T20:54:20.11 0.6 undecidable manual S 127 44.622 50 0.32 45
IV.CSP1.EHZ. 2024-04-04T20:54:20.84 3.0 undecidable manual S -1.49 0
IV.ATVO.HHZ. 2024-04-04T20:54:19.23 3.0 positive manual P 0.26 0
IV.FDMO.HHZ. 2024-04-04T20:54:18.54 3.0 undecidable manual S -0.55 0
IV.TERO.HHZ. 2024-04-04T20:54:17.42 3.0 negative manual P -0.34 0
IV.LNSS.HHZ. 2024-04-04T20:54:15.01 0.6 undecidable manual S 127 26.9508 50 -0.07 49
IV.NRCA.HHZ. 2024-04-04T20:54:15.64 0.6 undecidable manual S 71 28.8489 50 0.04 49
IV.CESI.HHZ. 2024-04-04T20:54:15.93 0.6 undecidable manual S 20 30.0477 50 0.03 49
IV.SNTG.HHZ. 2024-04-04T20:54:15.68 3.0 positive manual P -0.15 0
IV.ATCC.EHZ. 2024-04-04T20:54:14.51 3.0 undecidable manual P 0.01 0
IV.SMA1.EHZ. 2024-04-04T20:54:14.34 3.0 positive manual P 0.17 0
IV.MMO1.EHZ. 2024-04-04T20:54:14.11 3.0 negative manual P -0.09 0
IV.MML1.EHZ. 2024-04-04T20:54:13.32 3.0 undecidable manual P -0.12 0
IV.RM33.EHZ. 2024-04-04T20:54:13.61 1.0 undecidable manual P 127 44.622 50 0.01 24
IV.CESX.HHZ. 2024-04-04T20:54:13.35 0.6 undecidable manual S 225 22.1556 114 -0.18 48
IV.MOMA.HHZ. 2024-04-04T20:54:12.36 0.6 undecidable manual S 289 17.871 119 0.15 49
IV.ARRO.EHZ. 2024-04-04T20:54:12.65 0.6 undecidable manual S 183 19.0698 117 0.09 49
IV.CSP1.EHZ. 2024-04-04T20:54:12.67 3.0 undecidable manual P -2.13 0
IV.ASSB.HHZ. 2024-04-04T20:54:11.90 3.0 undecidable manual P 0.02 0
IV.NRCA.HHZ. 2024-04-04T20:54:11.12 0.3 negative manual P 71 28.8489 50 -0.06 73
IV.CESI.HHZ. 2024-04-04T20:54:11.27 0.1 positive manual P 20 30.0477 50 -0.08 97
IV.GAVE.EHZ. 2024-04-04T20:54:10.16 0.6 undecidable manual S 124 11.4774 130 -0.21 49
IV.LNSS.HHZ. 2024-04-04T20:54:10.75 0.1 undecidable manual P 127 26.9508 50 -0.13 96
ZO.PDN12.EHZ. 2024-04-04T20:54:10.93 0.6 undecidable manual S 56 13.7751 125 -0.05 50
IV.CESX.HHZ. 2024-04-04T20:54:09.81 1.0 undecidable manual P 225 22.1556 114 -0.17 24
IT.GNU.HGN. 2024-04-04T20:54:09.43 0.6 undecidable manual P 289 17.871 119 0.21 48
IV.MOMA.HHZ. 2024-04-04T20:54:09.08 0.3 undecidable manual P 289 17.871 119 -0.14 73
IV.ARRO.EHZ. 2024-04-04T20:54:09.57 0.6 positive manual P 183 19.0698 117 0.15 49
ZO.PDN12.EHZ. 2024-04-04T20:54:08.57 0.1 undecidable manual P 56 13.7751 125 0.06 100
IV.GAVE.EHZ. 2024-04-04T20:54:08.24 0.1 positive manual P 124 11.4774 130 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.HNE. ML:2.1 0.001485 1.06 AML other m 2024-04-04T20:54:10.74
IV.GAVE.EHE. ML:2.1 0.0014849999999999998 0.12 AML other m 2024-04-04T20:54:10.69
IV.GAVE.EHN. ML:2.0 0.001145 0.14 AML other m 2024-04-04T20:54:11.48
IV.MOMA.HHE. ML:1.7 0.000431 1.34 AML other m 2024-04-04T20:54:12.13
IV.MOMA.HHN. ML:1.6 0.0003115 1.26 AML other m 2024-04-04T20:54:13.26
IV.MOMA.HNE. ML:1.8 0.0004885 0.24 AML other m 2024-04-04T20:54:13.15
IV.ARRO.EHE. ML:1.4 0.00019800000000000002 0.22 AML other m 2024-04-04T20:54:13.49
IV.MOMA.HNN. ML:1.5 0.000254 1.48 AML other m 2024-04-04T20:54:13.95
IV.GAVE.HNN. ML:1.5 0.00034199999999999996 0.6 AML other m 2024-04-04T20:54:14.16
IV.CESX.HHE. ML:1.5 0.0001975 0.46 AML other m 2024-04-04T20:54:14.57
IV.CESX.HHN. ML:1.4 0.000183 1.56 AML other m 2024-04-04T20:54:14.92
IV.ARRO.EHN. ML:1.4 0.000221 0.18 AML other m 2024-04-04T20:54:15.53
IV.LNSS.HHE. ML:1.9 0.0004605 0.84 AML other m 2024-04-04T20:54:15.96
IV.LNSS.HHN. ML:1.9 0.00045900000000000004 0.54 AML other m 2024-04-04T20:54:16.11
IV.CESI.HHE. ML:1.3 0.00010499999999999999 0.74 AML other m 2024-04-04T20:54:16.21
IV.CESI.HHN. ML:1.6 0.00020050000000000002 0.7 AML other m 2024-04-04T20:54:17.50
IV.NRCA.HHN. ML:1.7 0.0002485 0.12 AML other m 2024-04-04T20:54:17.25
IV.NRCA.HHE. ML:1.7 0.000228 0.14 AML other m 2024-04-04T20:54:17.44
IV.ASSB.HHN. ML:1.4 0.00009465 0.18 AML other m 2024-04-04T20:54:17.47
IV.ASSB.HHE. ML:1.5 0.000141 0.34 AML other m 2024-04-04T20:54:17.55
IV.FDMO.HHE. ML:1.6 0.0001185 0.2 AML other m 2024-04-04T20:54:19.46
IV.FDMO.HHN. ML:1.3 0.0000701 1.06 AML other m 2024-04-04T20:54:20.02
IV.MML1.EHE. ML:1.3 0.0000645 0.54 AML other m 2024-04-04T20:54:20.39
IV.MMO1.EHN. ML:1.5 0.00008575000000000001 0.46 AML other m 2024-04-04T20:54:21.60
IV.MMO1.EHE. ML:1.6 0.00010245 0.78 AML other m 2024-04-04T20:54:21.23
IV.RM33.EHN. ML:1.5 0.0000917 0.62 AML other m 2024-04-04T20:54:21.65
IV.MML1.EHN. ML:1.3 0.000058450000000000005 0.22 AML other m 2024-04-04T20:54:21.78
IV.SMA1.EHE. ML:1.6 0.00011499999999999999 0.32 AML other m 2024-04-04T20:54:22.56
IV.RM33.EHE. ML:1.5 0.0001008 0.14 AML other m 2024-04-04T20:54:22.71
IV.SMA1.EHN. ML:1.4 0.00007085 0.58 AML other m 2024-04-04T20:54:22.43
IV.ATCC.EHE. ML:1.4 0.0000619 0.12 AML other m 2024-04-04T20:54:23.06
IV.SNTG.HHN. ML:1.1 0.0000237 0.56 AML other m 2024-04-04T20:54:24.88
IV.ATCC.EHN. ML:1.3 0.0000567 0.34 AML other m 2024-04-04T20:54:25.12
IV.SNTG.HHE. ML:1.1 0.00002815 0.46 AML other m 2024-04-04T20:54:28.42
IV.CING.HHN. ML:1.3 0.00003175 0.58 AML other m 2024-04-04T20:54:30.98
IV.ATVO.HHE. ML:1.1 0.0000188 0.72 AML other m 2024-04-04T20:54:33.03
IV.ATVO.HHN. ML:1.1 0.000018105 0.42 AML other m 2024-04-04T20:54:33.69
IV.CING.HHE. ML:1.1 0.0000194 1 AML other m 2024-04-04T20:54:34.22
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