Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 25-04-2023 and time 06:28:17 (Italy) in region 6 km SW Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 6 km SW Monte Cavallo (MC), on

  • 25-04-2023 04:28:17 (UTC)
  • 25-04-2023 06:28:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9600, 12.9460 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.

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 6 145 145
Sellano PG 8 1079 1224
Preci PG 12 724 1948
Visso MC 12 1107 3055
Serravalle di Chienti MC 13 1070 4125
Pieve Torina MC 13 1458 5583
Fiordimonte MC 15 202 5785
Cerreto di Spoleto PG 16 1075 6860
Ussita MC 16 444 7304
Muccia MC 16 915 8219
Pievebovigliana MC 16 866 9085
Castelsantangelo sul Nera MC 18 281 9366
Trevi PG 19 8469 17835
Valtopina PG 19 1398 19233
Fiastra MC 19 559 19792
Foligno PG 20 57155 76947

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
51 Km NE of Terni (111501 inhabitants)
70 Km W of Teramo (54892 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
99 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 2023-04-25
04:28:17		 42.9595 12.9463 11 2023-04-25
04:33:36		 Sala Sismica INGV-Roma 116721791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-25 04:28:17 ± 0.04
Latitude 42.9595 ± 0.0027
Longitude 12.9463 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116721791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 301
Semi-minor axis of confidence ellipse (meter) 248
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
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) 104
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29498
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 116721791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-25 04:33:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SRES.HHZ. 2023-04-25T04:28:45.81 3.0 undecidable manual S 0.08 0
IV.SNTG.HHZ. 2023-04-25T04:28:28.34 0.6 undecidable manual S 359 32.745 50 -0.11 48
IV.GAVE.EHE. 2023-04-25T04:28:27.84 0.3 undecidable manual S 188 29.9478 50 0.14 72
IV.CSP1.EHZ. 2023-04-25T04:28:26.68 0.3 undecidable manual S 55 25.5522 50 0.15 73
IV.ASSB.HHZ. 2023-04-25T04:28:26.07 0.3 undecidable manual S 292 25.0527 50 -0.33 70
IV.MML1.EHZ. 2023-04-25T04:28:24.15 0.3 undecidable manual S 7 17.1717 122 -0.04 75
IV.NRCA.HNN. 2023-04-25T04:28:24.70 0.3 undecidable manual S 136 19.5693 119 -0.19 73
IV.SNTG.HHZ. 2023-04-25T04:28:23.66 1.0 positive manual P 359 32.745 50 -0.02 25
IV.GAVE.EHE. 2023-04-25T04:28:23.21 0.6 undecidable manual P 188 29.9478 50 -0.04 49
IV.FDMO.HHZ. 2023-04-25T04:28:23.18 0.3 undecidable manual S 53 14.2746 127 -0.17 74
IV.ASSB.HHZ. 2023-04-25T04:28:22.56 0.3 undecidable manual P 292 25.0527 50 0.06 74
IV.CSP1.EHZ. 2023-04-25T04:28:22.62 0.3 undecidable manual P 55 25.5522 50 0.05 74
IT.MTCL.HGZ. 2023-04-25T04:28:21.25 0.3 undecidable manual S 48 5.7942 152 -0.12 76
IV.NRCA.HNN. 2023-04-25T04:28:21.57 0.1 undecidable manual P 136 19.5693 119 -0.05 100
IV.MML1.EHZ. 2023-04-25T04:28:21.33 0.6 undecidable manual P 7 17.1717 122 0.11 50
IV.CESI.HHZ. 2023-04-25T04:28:21.50 0.3 undecidable manual S 326 6.0939 150 0.07 76
IV.FDMO.HHZ. 2023-04-25T04:28:20.80 0.3 positive manual P 53 14.2746 127 0.07 75
IV.CESI.HHZ. 2023-04-25T04:28:19.81 0.1 undecidable manual P 326 6.0939 150 0.19 100
IT.MTCL.HGZ. 2023-04-25T04:28:19.73 0.3 undecidable manual P 48 5.7942 152 0.14 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.9 0.0001159 0.46 AML other m 2023-04-25T04:28:21.74
IV.CESI.HHE. ML:0.8 0.00008845 0.18 AML other m 2023-04-25T04:28:21.59
IV.FDMO.HHN. ML:0.6 0.00003805 0.16 AML other m 2023-04-25T04:28:23.47
IV.FDMO.HHE. ML:0.8 0.0000553 0.24 AML other m 2023-04-25T04:28:23.45
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