Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 23-03-2024 and time 04:38:35 (UTC) in region 5 km NE Spoleto (PG)

A magnitude ML 1.3 earthquake occured in region: 5 km NE Spoleto (PG), on

  • 23-03-2024 04:38:35 (UTC)
  • 23-03-2024 05:38:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7580, 12.7870 at 8 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
Sant'Anatolia di Narco PG 5 564 38782
Scheggino PG 6 461 39243
Vallo di Nera PG 6 364 39607
Campello sul Clitunno PG 7 2442 42049
Castel Ritaldi PG 12 3278 45327
Cerreto di Spoleto PG 13 1075 46402
Poggiodomo PG 13 117 46519
Trevi PG 14 8469 54988
Ferentillo TR 15 1913 56901
Montefranco TR 18 1276 58177
Monteleone di Spoleto PG 18 599 58776
Sellano PG 19 1079 59855
Montefalco PG 19 5679 65534
Giano dell'Umbria PG 19 3846 69380
Cascia PG 19 3217 72597
Arrone TR 19 2763 75360
Polino TR 20 233 75593

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SE of Foligno (57155 inhabitants)
25 Km NE of Terni (111501 inhabitants)
51 Km SE of Perugia (166134 inhabitants)
67 Km NE of Viterbo (67173 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
76 Km W of Teramo (54892 inhabitants)
84 Km N of Guidonia Montecelio (88673 inhabitants)
88 Km N of Tivoli (56533 inhabitants)
99 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 1.3 2024-03-23
04:38:35		 42.7585 12.787 9 2024-03-23
04:44:42		 Sala Sismica INGV-Roma 126072901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-23 04:38:35 ± 0.04
Latitude 42.7585 ± 0.0018
Longitude 12.7870 ± 0.0024
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126072901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 204
Semi-minor axis of confidence ellipse (meter) 170
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.61514
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 126072901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-23 04:44:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2024-03-23T04:39:01.93 0.6 undecidable manual S -0.11 1.17
IV.FIAM.HHZ. 2024-03-23T04:38:54.70 1.0 undecidable manual S 153 60.6948 50 0.26 22
IV.TERO.HHZ. 2024-03-23T04:38:47.76 1.0 undecidable manual P 102 68.2761 50 0.29 22
IV.ASSB.HHZ. 2024-03-23T04:38:47.16 0.1 undecidable manual S 342 33.2445 104 0.08 96
IV.FIAM.HHZ. 2024-03-23T04:38:46.53 1.0 positive manual P 153 60.6948 50 0.22 22
IV.CESI.HHZ. 2024-03-23T04:38:45.66 0.1 undecidable manual S 19 28.9488 106 0 98
IV.CSP1.EHZ. 2024-03-23T04:38:44.74 1.0 positive manual P 42 50.2164 50 0.06 23
IV.SMA1.EHZ. 2024-03-23T04:38:44.21 1.0 negative manual P 107 46.9197 50 0.04 24
IV.LNSS.HHZ. 2024-03-23T04:38:44.82 0.1 undecidable manual S 130 26.9508 107 -0.17 95
IV.MMO1.EHZ. 2024-03-23T04:38:44.15 0.6 negative manual P 70 46.62 50 0.02 47
IV.MML1.EHZ. 2024-03-23T04:38:43.08 1.0 undecidable manual P 21 42.1245 50 -0.36 22
IV.RM33.EHZ. 2024-03-23T04:38:43.56 1.0 negative manual P 128 44.5221 50 -0.25 23
IV.FDMO.HHZ. 2024-03-23T04:38:43.01 0.1 undecidable manual P 38 39.3273 50 0 96
IV.MOMA.HHZ. 2024-03-23T04:38:42.21 0.1 undecidable manual S 286 18.3705 115 0 100
IV.CESI.HHZ. 2024-03-23T04:38:41.25 0.1 positive manual P 19 28.9488 106 0.01 98
IV.ASSB.HHZ. 2024-03-23T04:38:41.83 0.6 undecidable manual P 342 33.2445 104 -0.22 47
IV.GAVE.EHZ. 2024-03-23T04:38:40.21 0.1 undecidable manual S 130 11.3775 127 0.09 100
IV.LNSS.HHZ. 2024-03-23T04:38:40.71 0.1 undecidable manual P 130 26.9508 107 -0.14 96
IV.ARRO.EHZ. 2024-03-23T04:38:39.59 0.6 positive manual P 185 19.9689 113 0.05 49
IV.CESX.HHZ. 2024-03-23T04:38:39.94 1.0 undecidable manual P 225 23.3544 110 -0.22 24
IV.MOMA.HHZ. 2024-03-23T04:38:39.23 0.3 negative manual P 286 18.3705 115 -0.01 75
IV.GAVE.EHZ. 2024-03-23T04:38:38.22 0.1 positive manual P 130 11.3775 127 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHN. ML:1.7 0.0006910000000000001 0.52 AML other m 2024-03-23T04:38:40.74
IV.GAVE.EHE. ML:1.8 0.0009279999999999999 1.08 AML other m 2024-03-23T04:38:40.22
IV.MOMA.HHE. ML:1.5 0.0002585 0.26 AML other m 2024-03-23T04:38:43.04
IV.MOMA.HHN. ML:1.4 0.00022849999999999997 1.22 AML other m 2024-03-23T04:38:43.79
IV.ARRO.EHE. ML:1.2 0.0001305 0.44 AML other m 2024-03-23T04:38:44.47
IV.CESX.HHE. ML:1.3 0.00013350000000000002 0.48 AML other m 2024-03-23T04:38:44.52
IV.ARRO.EHN. ML:1.3 0.00014500000000000003 0.22 AML other m 2024-03-23T04:38:44.60
IV.CESX.HHN. ML:1.4 0.000156 0.64 AML other m 2024-03-23T04:38:45.09
IV.LNSS.HHN. ML:1.7 0.000286 1.04 AML other m 2024-03-23T04:38:45.11
IV.LNSS.HHE. ML:1.7 0.00028149999999999996 0.18 AML other m 2024-03-23T04:38:45.54
IV.CESI.HHN. ML:1.3 0.0001055 0.74 AML other m 2024-03-23T04:38:47.08
IV.ASSB.HHN. ML:1.2 0.00007275 0.22 AML other m 2024-03-23T04:38:47.39
IV.CESI.HHE. ML:1.1 0.00006900000000000001 0.64 AML other m 2024-03-23T04:38:47.40
IV.ASSB.HHE. ML:1.3 0.0000967 0.32 AML other m 2024-03-23T04:38:47.49
IV.FDMO.HHN. ML:1.0 0.000033849999999999996 0.74 AML other m 2024-03-23T04:38:49.61
IV.FDMO.HHE. ML:1.2 0.000055499999999999994 0.44 AML other m 2024-03-23T04:38:49.66
IV.MML1.EHE. ML:1.1 0.000047149999999999994 0.72 AML other m 2024-03-23T04:38:50.71
IV.MMO1.EHE. ML:1.1 0.000040300000000000004 0.76 AML other m 2024-03-23T04:38:51.61
IV.MML1.EHN. ML:1.1 0.00003945 1.24 AML other m 2024-03-23T04:38:51.12
IV.RM33.EHN. ML:1.4 0.00006884999999999999 1.72 AML other m 2024-03-23T04:38:52.10
IV.SMA1.EHE. ML:1.4 0.00007535 0.34 AML other m 2024-03-23T04:38:52.57
IV.RM33.EHE. ML:1.3 0.0000614 0.14 AML other m 2024-03-23T04:38:52.70
IV.MMO1.EHN. ML:1.2 0.00004675 1.18 AML other m 2024-03-23T04:38:53.05
IV.SMA1.EHN. ML:1.3 0.0000553 1.04 AML other m 2024-03-23T04:38:53.87
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