Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 10-05-2023 and time 07:20:14 (UTC) in region 4 km SE Scheggino (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km SE Scheggino (PG), on

  • 10-05-2023 07:20:14 (UTC)
  • 10-05-2023 09:20:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6940, 12.8780 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
Scheggino PG 4 461 461
Poggiodomo PG 5 117 578
Sant'Anatolia di Narco PG 6 564 1142
Monteleone di Spoleto PG 8 599 1741
Vallo di Nera PG 9 364 2105
Ferentillo TR 11 1913 4018
Cascia PG 11 3217 7235
Spoleto PG 12 38218 45453
Polino TR 12 233 45686
Montefranco TR 14 1276 46962
Cerreto di Spoleto PG 14 1075 48037
Arrone TR 15 2763 50800
Leonessa RI 16 2435 53235
Campello sul Clitunno PG 16 2442 55677
Morro Reatino RI 19 373 56050
Labro RI 20 374 56424
Rivodutri RI 20 1253 57677

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NE of Terni (111501 inhabitants)
33 Km SE of Foligno (57155 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
61 Km SE of Perugia (166134 inhabitants)
68 Km W of Teramo (54892 inhabitants)
70 Km E of Viterbo (67173 inhabitants)
78 Km N of Guidonia Montecelio (88673 inhabitants)
81 Km N of Tivoli (56533 inhabitants)
95 Km NE 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 1.0 2023-05-10
07:20:14		 42.6938 12.8783 11 2023-05-10
07:26:25		 Sala Sismica INGV-Roma 117207321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-10 07:20:14 ± 0.11
Latitude 42.6938 ± 0.0063
Longitude 12.8783 ± 0.0061
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117207321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 575
Semi-minor axis of confidence ellipse (meter) 438
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 195
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30847
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 117207321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-10 07:26:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2023-05-10T07:20:28.84 3.0 undecidable manual S 0
IV.RM33.EHZ. 2023-05-10T07:20:26.63 0.6 undecidable manual S 127 34.2435 90 0.03 49
IV.NRCA.HHZ. 2023-05-10T07:20:23.72 0.6 undecidable manual S 51 24.6531 91 -0.32 47
IV.LNSS.HHZ. 2023-05-10T07:20:21.90 0.6 undecidable manual S 127 16.6722 92 0.01 51
IV.FDMO.HHZ. 2023-05-10T07:20:21.31 3.0 positive manual P -0.51 0
IV.ARRO.EHZ. 2023-05-10T07:20:21.31 0.6 undecidable manual S 216 15.6732 93 -0.33 48
IV.RM33.EHZ. 2023-05-10T07:20:21.70 0.1 undecidable manual P 127 34.2435 90 0.01 98
IV.NRCA.HHZ. 2023-05-10T07:20:20.23 0.3 undecidable manual P 51 24.6531 91 0.02 74
IV.LNSS.HHZ. 2023-05-10T07:20:19.04 0.1 undecidable manual P 127 16.6722 92 0.06 100
IV.ARRO.EHZ. 2023-05-10T07:20:18.95 0.1 undecidable manual P 216 15.6732 93 0.12 99
IV.GAVE.EHZ. 2023-05-10T07:20:18.74 0.6 undecidable manual S 99 1.2987 171 -0.16 50
IV.GAVE.EHZ. 2023-05-10T07:20:17.42 0.1 undecidable manual P 99 1.2987 171 0.17 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.1 0.00020400000000000003 0.16 AML other m 2023-05-10T07:20:18.88
IV.GAVE.EHN. ML:1.2 0.0002765 0.18 AML other m 2023-05-10T07:20:18.99
IV.ARRO.EHN. ML:1.2 0.0001255 0.16 AML other m 2023-05-10T07:20:21.60
IV.ARRO.EHE. ML:1.1 0.00011549999999999999 1.24 AML other m 2023-05-10T07:20:22.17
IV.LNSS.HHN. ML:1.2 0.000132 0.78 AML other m 2023-05-10T07:20:22.19
IV.LNSS.HHE. ML:1.3 0.00016199999999999998 0.34 AML other m 2023-05-10T07:20:22.65
IV.NRCA.HHN. ML:0.8 0.0000419 0.08 AML other m 2023-05-10T07:20:24.46
IV.NRCA.HHE. ML:0.9 0.00005165 0.1 AML other m 2023-05-10T07:20:24.60
IV.FDMO.HHE. ML:0.7 0.000016884525 0.2208 AML other m 2023-05-10T07:20:29.31
IV.FDMO.HHN. ML:0.7 0.000015018220000000001 0.1408 AML other m 2023-05-10T07:20:29.20
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