Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 30-05-2023 and time 22:07:02 (Italy) in region 7 km W Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 7 km W Monte Cavallo (MC), on

  • 30-05-2023 20:07:02 (UTC)
  • 30-05-2023 22:07:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9650, 12.9210 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Monte Cavallo MC 7 145 145
Sellano PG 8 1079 1224
Serravalle di Chienti MC 12 1070 2294
Preci PG 14 724 3018
Pieve Torina MC 14 1458 4476
Visso MC 14 1107 5583
Fiordimonte MC 16 202 5785
Cerreto di Spoleto PG 16 1075 6860
Muccia MC 17 915 7775
Trevi PG 17 8469 16244
Valtopina PG 17 1398 17642
Pievebovigliana MC 17 866 18508
Foligno PG 18 57155 75663
Ussita MC 18 444 76107
Nocera Umbra PG 19 5839 81946
Campello sul Clitunno PG 20 2442 84388

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
50 Km NE of Terni (111501 inhabitants)
72 Km W of Teramo (54892 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
98 Km S of Fano (60888 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 0.8 2023-05-30
20:07:02		 42.9648 12.9207 10 2023-05-30
20:12:46		 Sala Sismica INGV-Roma 117891861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-30 20:07:02 ± 0.05
Latitude 42.9648 ± 0.0027
Longitude 12.9207 ± 0.0037
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 117891861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 246
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
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) 0.04137
Epicentral distance of station farthest from the epicenter (degree) 0.27339
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 117891861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-30 20:12:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.HNZ. 2023-05-30T20:07:13.53 0.3 undecidable manual S 184 30.3474 50 0.04 73
IV.CSP1.EHZ. 2023-05-30T20:07:12.49 0.3 undecidable manual S 58 26.9508 50 -0.12 72
IV.ASSB.HHZ. 2023-05-30T20:07:11.09 0.3 undecidable manual S 292 22.9548 114 -0.29 70
IV.NRCA.HHZ. 2023-05-30T20:07:10.82 0.3 undecidable manual S 133 21.4674 115 -0.09 73
IV.FDMO.HHZ. 2023-05-30T20:07:09.03 0.3 undecidable manual S 60 15.6732 123 -0.12 74
IV.MML1.EHZ. 2023-05-30T20:07:09.56 0.1 undecidable manual S 14 16.9719 120 0.02 100
IV.GAVE.HNZ. 2023-05-30T20:07:08.92 0.1 undecidable manual P 184 30.3474 50 -0.01 98
IV.ASSB.HHZ. 2023-05-30T20:07:08.00 0.6 undecidable manual P 292 22.9548 114 0.28 47
IV.CSP1.EHZ. 2023-05-30T20:07:08.39 0.6 positive manual P 58 26.9508 50 -0.03 49
IV.NRCA.HHZ. 2023-05-30T20:07:07.46 0.1 undecidable manual P 133 21.4674 115 0.02 99
IV.CESI.HNN. 2023-05-30T20:07:06.41 0.3 undecidable manual S 344 4.5954 155 -0.12 75
IV.FDMO.HHZ. 2023-05-30T20:07:06.53 0.1 undecidable manual P 60 15.6732 123 0.1 99
IV.MML1.EHZ. 2023-05-30T20:07:06.77 0.1 undecidable manual P 14 16.9719 120 0.12 98
IV.CESI.HNN. 2023-05-30T20:07:05.08 0.1 undecidable manual P 344 4.5954 155 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.6 0.00004 0.28 AML other m 2023-05-30T20:07:09.21
IV.FDMO.HHN. ML:0.6 0.0000395 0.34 AML other m 2023-05-30T20:07:09.24
IV.MML1.EHN. ML:0.8 0.000059800000000000003 0.18 AML other m 2023-05-30T20:07:09.80
IV.MML1.EHE. ML:1.1 0.00011350000000000001 0.2 AML other m 2023-05-30T20:07:09.73
IV.NRCA.HHN. ML:0.8 0.00004 0.12 AML other m 2023-05-30T20:07:10.92
IV.NRCA.HHE. ML:0.6 0.000026700000000000002 0.54 AML other m 2023-05-30T20:07:11.11
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