Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 18-03-2024 and time 14:36:24 (UTC) in region 3 km NE Spoleto (PG)

A magnitude ML 1.4 earthquake occured in region: 3 km NE Spoleto (PG), on

  • 18-03-2024 14:36:24 (UTC)
  • 18-03-2024 15:36:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7520, 12.7640 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 3 38218 38218
Sant'Anatolia di Narco PG 6 564 38782
Scheggino PG 7 461 39243
Campello sul Clitunno PG 8 2442 41685
Vallo di Nera PG 8 364 42049
Castel Ritaldi PG 11 3278 45327
Trevi PG 14 8469 53796
Ferentillo TR 15 1913 55709
Poggiodomo PG 15 117 55826
Cerreto di Spoleto PG 15 1075 56901
Montefranco TR 17 1276 58177
Giano dell'Umbria PG 18 3846 62023
Montefalco PG 18 5679 67702
Arrone TR 19 2763 70465
Acquasparta TR 19 4778 75243
Monteleone di Spoleto PG 19 599 75842
Polino TR 20 233 76075
Massa Martana PG 20 3770 79845

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Terni (111501 inhabitants)
23 Km S of Foligno (57155 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
78 Km W of Teramo (54892 inhabitants)
84 Km N of Guidonia Montecelio (88673 inhabitants)
88 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 1.4 2024-03-18
14:36:24		 42.7517 12.7637 8 2024-03-18
14:45:32		 Sala Sismica INGV-Roma 125966771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-03-18 14:36:24 ± 0.04
Latitude 42.7517 ± 0.0018
Longitude 12.7637 ± 0.0024
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125966771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 199
Semi-minor axis of confidence ellipse (meter) 140
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 333
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) 68
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.11242
Epicentral distance of station farthest from the epicenter (degree) 0.46855
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 125966771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-03-18 14:45:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2024-03-18T14:36:41.67 0.6 undecidable manual S 43 52.0035 50 0.16 46
IV.SMA1.EHZ. 2024-03-18T14:36:40.73 0.6 undecidable manual S 106 48.5181 50 0.15 46
IV.MMO1.EHZ. 2024-03-18T14:36:40.57 0.6 undecidable manual S 70 48.618 50 -0.05 47
IV.RM33.EHZ. 2024-03-18T14:36:39.74 0.6 undecidable manual S 126 45.621 50 -0.06 47
IV.MML1.EHZ. 2024-03-18T14:36:39.23 1.0 undecidable manual S 23 43.5231 50 -0.02 24
IV.FDMO.HHZ. 2024-03-18T14:36:38.51 0.6 undecidable manual S 40 41.1255 50 -0.09 47
IV.ASSB.HHZ. 2024-03-18T14:36:36.46 0.6 undecidable manual S 345 33.3444 103 0.08 48
ZO.PDN11.EHZ. 2024-03-18T14:36:35.16 0.6 undecidable manual S 83 29.2485 105 0.17 48
IV.NRCA.HHZ. 2024-03-18T14:36:35.13 0.6 undecidable manual S 72 29.9478 105 -0.1 48
IV.CESI.HHZ. 2024-03-18T14:36:35.31 0.3 undecidable manual S 22 30.3474 105 -0.05 73
IV.LNSS.HHZ. 2024-03-18T14:36:34.29 0.6 undecidable manual S 126 27.9498 106 -0.27 47
IV.CSP1.EHZ. 2024-03-18T14:36:34.65 0.1 undecidable manual P 43 52.0035 50 0.34 88
IV.SMA1.EHZ. 2024-03-18T14:36:33.66 0.6 positive manual P 106 48.5181 50 -0.11 47
IV.MMO1.EHZ. 2024-03-18T14:36:33.49 0.1 undecidable manual P 70 48.618 50 -0.3 90
IV.RM33.EHZ. 2024-03-18T14:36:33.67 0.6 undecidable manual P 126 45.621 50 0.35 45
IV.CESX.HHZ. 2024-03-18T14:36:32.14 0.6 undecidable manual S 222 21.4674 110 -0.27 47
IV.MML1.EHZ. 2024-03-18T14:36:32.88 0.1 undecidable manual P 23 43.5231 50 -0.12 94
IV.FDMO.HHZ. 2024-03-18T14:36:32.58 0.1 undecidable manual P 40 41.1255 50 -0.05 96
IV.ASSB.HHZ. 2024-03-18T14:36:31.27 0.6 undecidable manual P 345 33.3444 103 -0.08 48
IV.ARRO.EHZ. 2024-03-18T14:36:31.55 0.6 undecidable manual S 179 19.1697 113 -0.11 49
IT.GNU.HGZ. 2024-03-18T14:36:31.03 0.6 undecidable manual S 290 16.7721 115 0.12 49
IV.CESI.HHZ. 2024-03-18T14:36:30.63 0.1 undecidable manual P 22 30.3474 105 -0.13 96
IV.MOMA.HHZ. 2024-03-18T14:36:30.83 0.6 undecidable manual S 290 16.7721 115 -0.09 50
ZO.PDN11.EHZ. 2024-03-18T14:36:30.48 0.1 undecidable manual P 83 29.2485 105 -0.06 97
IV.NRCA.HHZ. 2024-03-18T14:36:30.51 0.3 negative manual P 72 29.9478 105 -0.17 71
IV.LNSS.HHZ. 2024-03-18T14:36:30.40 0.1 undecidable manual P 126 27.9498 106 0.1 97
ZO.PDN12.EHZ. 2024-03-18T14:36:30.47 0.6 undecidable manual S 58 14.6742 118 0.22 48
IV.GAVE.EHZ. 2024-03-18T14:36:29.55 0.6 undecidable manual S 122 12.4764 122 -0.07 50
IV.CESX.HHZ. 2024-03-18T14:36:29.09 0.1 undecidable manual P 222 21.4674 110 0.03 99
IV.ARRO.EHZ. 2024-03-18T14:36:28.81 0.1 undecidable manual P 179 19.1697 113 0.18 97
IT.GNU.HGZ. 2024-03-18T14:36:28.56 0.6 undecidable manual P 290 16.7721 115 0.37 47
IV.MOMA.HHZ. 2024-03-18T14:36:28.07 0.1 undecidable manual P 290 16.7721 115 -0.12 98
ZO.PDN12.EHZ. 2024-03-18T14:36:27.87 0.1 undecidable manual P 58 14.6742 118 0.06 100
IV.GAVE.EHZ. 2024-03-18T14:36:27.54 0.1 undecidable manual P 122 12.4764 122 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.7 0.00066 0.14 AML other m 2024-03-18T14:36:30.09
IV.GAVE.EHN. ML:1.7 0.000615 0.2 AML other m 2024-03-18T14:36:30.44
IV.MOMA.HHN. ML:1.2 0.00014600000000000003 1.7 AML other m 2024-03-18T14:36:32.97
IV.MOMA.HHE. ML:1.5 0.00026649999999999997 0.26 AML other m 2024-03-18T14:36:32.23
IV.ARRO.EHN. ML:1.2 0.000124 0.22 AML other m 2024-03-18T14:36:33.33
IV.CESX.HHN. ML:1.4 0.000182 0.6 AML other m 2024-03-18T14:36:33.84
IV.CESX.HHE. ML:1.3 0.0001285 0.88 AML other m 2024-03-18T14:36:34.45
IV.ARRO.EHE. ML:1.2 0.0001325 0.28 AML other m 2024-03-18T14:36:34.29
IV.NRCA.HHN. ML:1.5 0.00016499999999999997 0.1 AML other m 2024-03-18T14:36:35.83
IV.CESI.HHN. ML:1.4 0.0001138 1.08 AML other m 2024-03-18T14:36:35.95
IV.CESI.HHE. ML:1.2 0.00007985 0.54 AML other m 2024-03-18T14:36:35.69
IV.NRCA.HHE. ML:1.4 0.00011300000000000001 0.16 AML other m 2024-03-18T14:36:36.39
IV.FDMO.HHE. ML:1.2 0.000051699999999999996 1.78 AML other m 2024-03-18T14:36:39.97
IV.FDMO.HHN. ML:1.1 0.000043700000000000005 0.64 AML other m 2024-03-18T14:36:39.44
IV.MML1.EHE. ML:1.3 0.00006365 0.7 AML other m 2024-03-18T14:36:40.43
IV.RM33.EHN. ML:1.3 0.00005555 0.6 AML other m 2024-03-18T14:36:40.55
IV.SMA1.EHE. ML:1.5 0.00009049999999999999 1.26 AML other m 2024-03-18T14:36:41.98
IV.CSP1.EHN. ML:1.7 0.0001138 0.78 AML other m 2024-03-18T14:36:42.39
IV.SMA1.EHN. ML:1.4 0.00007294999999999998 0.52 AML other m 2024-03-18T14:36:42.64
IV.CSP1.EHE. ML:1.6 0.00010214999999999999 1.34 AML other m 2024-03-18T14:36:43.13
IV.MML1.EHN. ML:1.0 0.00003625 0.46 AML other m 2024-03-18T14:36:43.44
IV.RM33.EHE. ML:1.4 0.0000771 0.76 AML other m 2024-03-18T14:36:46.67
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