Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 01-04-2023 and time 08:20:40 (UTC) in region 2 km E Monte Cavallo (MC)

A magnitude ML 0.5 earthquake occured in region: 2 km E Monte Cavallo (MC), on

  • 01-04-2023 08:20:40 (UTC)
  • 01-04-2023 10:20:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9970, 13.0260 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 2 145 145
Pieve Torina MC 6 1458 1603
Fiordimonte MC 7 202 1805
Pievebovigliana MC 9 866 2671
Visso MC 9 1107 3778
Muccia MC 10 915 4693
Serravalle di Chienti MC 10 1070 5763
Ussita MC 11 444 6207
Fiastra MC 12 559 6766
Acquacanina MC 13 121 6887
Preci PG 13 724 7611
Sellano PG 14 1079 8690
Castelsantangelo sul Nera MC 15 281 8971
Camerino MC 16 6974 15945
Bolognola MC 16 142 16087
Sefro MC 18 422 16509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
53 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
67 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
99 Km NE of Viterbo (67173 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
Bulletin
Rev1000 		ML 0.5 2023-04-01
08:20:40		 42.9972 13.0262 12 2024-03-01
17:18:04		 Bollettino Sismico Italiano INGV 116599901
Reviewed
Rev100 		ML 0.5 2023-04-01
08:20:40		 42.9927 13.0218 11 2023-04-01
08:27:14		 Sala Sismica INGV-Roma 115937611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-01 08:20:40 ± 0.12
Latitude 42.9972 ± 0.0063
Longitude 13.0262 ± 0.0098
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116599901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 693
Semi-minor axis of confidence ellipse (meter) 642
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 26
Circular confidence region, given by single value of horizontal uncertainty (meter) 690.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 6.47152
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 115937611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-01 08:27:14

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 116599901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-22 08:24:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2023-04-01T08:22:04.66 3.0 positive manual P 718.3365 -9.99 0
IV.MTMR.HNZ. 2023-04-01T08:21:58.46 3.0 undecidable manual Sn 2.99 0
IV.IVPL.HHZ. 2023-04-01T08:21:57.33 3.0 undecidable manual P 538.35 3.76 0
IV.AIO.HHZ. 2023-04-01T08:21:50.05 3.0 undecidable manual P 587.7672 -9.68 0
IV.CPOZ.HHZ. 2023-04-01T08:21:47.28 3.0 undecidable manual Sn -1.91 0
IV.MRB1.HHZ. 2023-04-01T08:21:47.65 3.0 undecidable manual Sn -3.62 0
IV.PABO.HHZ. 2023-04-01T08:21:44.15 3.0 undecidable manual Sg 10.61 0
GU.GORR.HHZ. 2023-04-01T08:21:43.37 3.0 undecidable manual Sg 16.17 0
IV.TDS.HHZ. 2023-04-01T08:21:42.16 3.0 positive manual P 461.6934 -1.87 0
IV.LRP.EHZ. 2023-04-01T08:21:22.71 3.0 undecidable manual Sn -5.24 0
IV.CELB.HHZ. 2023-04-01T08:21:15.88 3.0 undecidable manual Sn 0.83 0
IV.BDI.HHZ. 2023-04-01T08:21:03.51 3.0 undecidable manual Sn -1.14 0
IV.BAG8.EHZ. 2023-04-01T08:21:02.79 3.0 undecidable manual P 373.3485 -9.99 0
IV.MMO1.EHN. 2023-04-01T08:20:49.83 0.6 undecidable manual S 114 26.751 93 0.22 46
7F.SIB1.EHE. 2023-04-01T08:20:48.99 0.3 undecidable manual S 120 22.8549 94 0.42 67
IV.NRCA.HHZ. 2023-04-01T08:20:47.48 0.3 undecidable manual S 158 19.4694 96 -0.21 71
IV.CSP1.EHZ. 2023-04-01T08:20:47.49 0.6 undecidable manual S 54 17.871 98 0.23 47
IV.MML1.EHZ. 2023-04-01T08:20:46.14 0.6 undecidable manual S 341 13.6752 109 -0.02 49
IV.CESI.HHZ. 2023-04-01T08:20:45.23 0.6 undecidable manual S 275 9.879 125 -0.04 49
7F.SIB1.EHE. 2023-04-01T08:20:45.10 0.3 undecidable manual P 120 22.8549 94 0.14 71
IV.MMO1.EHN. 2023-04-01T08:20:44.60 0.6 undecidable manual P 114 26.751 93 -0.95 36
IV.FDMO.HHZ. 2023-04-01T08:20:44.54 0.3 undecidable manual S 49 6.5934 141 -0.09 74
IV.FEMA.HNE. 2023-04-01T08:20:44.35 0.3 undecidable manual S 154 4.2957 154 0.05 74
IV.NRCA.HHZ. 2023-04-01T08:20:44.46 0.1 positive manual P 158 19.4694 96 0.01 98
IV.MML1.EHZ. 2023-04-01T08:20:43.82 0.1 undecidable manual P 341 13.6752 109 0.26 95
IV.CESI.HHZ. 2023-04-01T08:20:43.20 0.3 undecidable manual P 275 9.879 125 0.15 73
IT.MTCL.HGZ. 2023-04-01T08:20:43.76 0.6 undecidable manual S 261 2.1978 166 -0.35 47
IV.CSP1.EHZ. 2023-04-01T08:20:43.56 0.3 undecidable manual P 54 17.871 98 -0.64 63
IT.MTCL.HGZ. 2023-04-01T08:20:42.40 0.6 undecidable manual P 261 2.1978 166 0.02 50
IV.FDMO.HHZ. 2023-04-01T08:20:42.69 0.1 undecidable manual P 49 6.5934 141 0.01 100
IV.FEMA.HNE. 2023-04-01T08:20:42.73 0.6 undecidable manual P 154 4.2957 154 0.24 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.3 0.00002586041 0.1408 AML other m 2023-04-01T08:20:44.62
IV.FDMO.HHN. ML:0.5 0.000043525340000000004 0.2176 AML other m 2023-04-01T08:20:44.76
IV.CESI.HHE. ML:0.8 0.00006648752 2.2016 AML other m 2023-04-01T08:20:45.31
IV.CESI.HHN. ML:0.6 0.000043042380000000005 0.096 AML other m 2023-04-01T08:20:45.33
IV.MML1.EHE. ML:0.3 0.0000203327945 0.1024 AML other m 2023-04-01T08:20:46.36
IV.MML1.EHN. ML:0.6 0.000035956614999999995 0.1024 AML other m 2023-04-01T08:20:46.36
IV.NRCA.HHN. ML:0.6 0.000029138824 0.7744 AML other m 2023-04-01T08:20:47.75
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