Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-04-2023 and time 01:21:00 (Italy) in region 4 km W Monte Cavallo (MC)

A magnitude ML 1.5 earthquake occured in region: 4 km W Monte Cavallo (MC), on

  • 22-04-2023 23:21:00 (UTC)
  • 23-04-2023 01:21:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9840, 12.9490 at 7 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.

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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
Monte Cavallo MC 5 145 145
Serravalle di Chienti MC 10 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 11 1458 3752
Visso MC 13 1107 4859
Fiordimonte MC 13 202 5061
Muccia MC 14 915 5976
Preci PG 14 724 6700
Pievebovigliana MC 14 866 7566
Ussita MC 16 444 8010
Fiastra MC 18 559 8569
Valtopina PG 18 1398 9967
Sefro MC 18 422 10389
Cerreto di Spoleto PG 18 1075 11464
Acquacanina MC 19 121 11585
Nocera Umbra PG 19 5839 17424
Castelsantangelo sul Nera MC 19 281 17705
Camerino MC 20 6974 24679

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
96 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
Bulletin
Rev1000 		ML 1.5 2023-04-22
23:21:00		 42.9835 12.9492 7 2024-03-01
17:18:08		 Bollettino Sismico Italiano INGV 117402631
Reviewed
Rev100 		ML 1.4 2023-04-22
23:21:00		 42.9923 12.9472 8 2023-04-22
23:29:48		 Sala Sismica INGV-Roma 116624751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-22 23:21:00 ± 0.05
Latitude 42.9835 ± 0.0027
Longitude 12.9492 ± 0.0037
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117402631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 267
Semi-minor axis of confidence ellipse (meter) 230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 54
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.68169
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 34
Type of magnitude ML
Reference to an origin 117402631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-16 09:59:20

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 42
Type of magnitude ML
Reference to an origin 116624751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-22 23:29:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPAG.EHZ. 2023-04-22T23:21:24.13 1.0 undecidable manual S 348 73.2711 50 0.83 18
IV.NARO.HHZ. 2023-04-22T23:21:24.87 0.3 undecidable manual S 337 75.6687 50 0.91 51
IV.PIEI.HHZ. 2023-04-22T23:21:23.10 0.3 undecidable manual S 332 69.7746 50 0.72 56
IV.FRON.EHZ. 2023-04-22T23:21:20.49 1.0 undecidable manual S 343 61.9935 50 0.2 22
IV.ARVD.HHZ. 2023-04-22T23:21:19.18 0.6 undecidable manual S 359 57.0984 50 0.19 44
IV.SSFR.HHZ. 2023-04-22T23:21:17.93 0.6 undecidable manual S 345 52.0035 50 0.29 44
IV.SMA1.EHZ. 2023-04-22T23:21:17.20 0.3 undecidable manual S 141 50.2164 50 0.04 70
IV.MURB.HHZ. 2023-04-22T23:21:16.65 0.6 undecidable manual S 312 46.3203 50 0.54 42
IV.CING.HHZ. 2023-04-22T23:21:16.34 0.3 undecidable manual S 25 47.8188 50 -0.18 68
IV.ARRO.EHZ. 2023-04-22T23:21:16.46 0.3 undecidable manual S 198 47.3193 50 0.09 69
IV.EL6.EHZ. 2023-04-22T23:21:14.20 0.3 undecidable manual S 18 40.3263 50 -0.31 67
IV.NARO.HHZ. 2023-04-22T23:21:14.02 0.6 undecidable manual P 337 75.6687 50 0 45
IV.MPAG.EHZ. 2023-04-22T23:21:13.97 0.3 undecidable manual P 348 73.2711 50 0.32 63
IV.GUMA.HHZ. 2023-04-22T23:21:12.42 0.3 undecidable manual S 74 32.5452 103 0.41 67
IV.PIEI.HHZ. 2023-04-22T23:21:12.81 0.6 undecidable manual P 332 69.7746 50 -0.3 42
IV.ATCC.EHZ. 2023-04-22T23:21:12.33 0.3 undecidable manual S 312 33.5442 102 -0.05 72
IV.GAVE.EHZ. 2023-04-22T23:21:12.45 0.3 undecidable manual S 188 32.6451 103 0.4 67
IV.SNTG.HHZ. 2023-04-22T23:21:11.21 0.3 undecidable manual S 359 30.1476 104 0 73
IV.FRON.EHZ. 2023-04-22T23:21:11.58 0.3 undecidable manual P 343 61.9935 50 -0.33 64
IV.MMO1.EHZ. 2023-04-22T23:21:11.59 0.3 undecidable manual S 107 32.0457 103 -0.27 69
IV.ARVD.HHZ. 2023-04-22T23:21:10.55 0.6 undecidable manual P 359 57.0984 50 -0.61 40
7F.SIB1.EHE. 2023-04-22T23:21:10.32 0.1 undecidable manual S 111 27.8499 105 -0.13 95
IV.SSFR.HHZ. 2023-04-22T23:21:10.10 0.3 undecidable manual P 345 52.0035 50 -0.27 66
IV.SMA1.EHZ. 2023-04-22T23:21:10.24 0.6 undecidable manual P 141 50.2164 50 0.14 45
7F.SIB3.EHN. 2023-04-22T23:21:10.66 0.3 undecidable manual S 115 28.749 104 -0.07 72
IV.ARRO.EHZ. 2023-04-22T23:21:09.40 0.3 undecidable manual P 198 47.3193 50 -0.25 67
IV.CSP1.EHZ. 2023-04-22T23:21:09.22 0.6 undecidable manual S 60 23.9538 107 0.08 48
IV.MURB.HHZ. 2023-04-22T23:21:09.20 0.6 undecidable manual P 312 46.3203 50 -0.29 44
IV.ASSB.HHZ. 2023-04-22T23:21:09.19 0.3 undecidable manual S 286 24.4533 107 -0.12 72
IV.CING.HHZ. 2023-04-22T23:21:09.26 0.1 positive manual P 25 47.8188 50 -0.47 85
IV.EL6.EHZ. 2023-04-22T23:21:08.04 0.3 positive manual P 18 40.3263 50 -0.53 64
IV.NRCA.HHZ. 2023-04-22T23:21:08.72 0.3 undecidable manual S 141 21.3675 109 0.43 67
IV.FOSV.EHZ. 2023-04-22T23:21:08.85 0.3 undecidable manual P 336 37.7289 101 0.7 60
IV.ATCC.EHZ. 2023-04-22T23:21:07.03 0.3 positive manual P 312 33.5442 102 -0.31 68
IV.GAVE.EHZ. 2023-04-22T23:21:07.10 0.6 undecidable manual P 188 32.6451 103 -0.05 48
IV.GUMA.HHZ. 2023-04-22T23:21:07.16 0.1 undecidable manual P 74 32.5452 103 0.03 96
IV.MOMA.HHZ. 2023-04-22T23:21:07.58 0.1 undecidable manual P 237 36.741 101 -0.37 89
IV.MML1.EHZ. 2023-04-22T23:21:06.09 0.6 undecidable manual S 7 14.5743 117 0 50
7F.SIB3.EHN. 2023-04-22T23:21:06.27 0.3 undecidable manual P 115 28.749 104 -0.11 71
IV.SNTG.HHZ. 2023-04-22T23:21:06.35 0.3 undecidable manual P 359 30.1476 104 -0.31 68
7F.SIB1.EHE. 2023-04-22T23:21:06.11 0.3 undecidable manual P 111 27.8499 105 -0.11 71
IV.MMO1.EHZ. 2023-04-22T23:21:06.75 0.3 undecidable manual P 107 32.0457 103 -0.29 68
IV.NRCA.HHZ. 2023-04-22T23:21:05.09 0.6 undecidable manual P 141 21.3675 109 0.12 48
IV.ASSB.HHZ. 2023-04-22T23:21:05.46 0.1 positive manual P 286 24.4533 107 -0.1 96
IV.FDMO.HHN. 2023-04-22T23:21:05.54 0.3 undecidable manual S 62 12.6762 120 0.02 75
IV.CSP1.EHZ. 2023-04-22T23:21:05.40 0.3 undecidable manual P 60 23.9538 107 -0.07 72
IV.FEMA.HNE. 2023-04-22T23:21:04.71 0.3 undecidable manual S 106 8.4804 131 0.37 70
IV.CESI.HHE. 2023-04-22T23:21:03.32 0.1 undecidable manual S 303 4.2957 149 -0.07 100
IV.MML1.EHZ. 2023-04-22T23:21:03.81 0.1 positive manual P 7 14.5743 117 0.1 98
IV.FDMO.HHN. 2023-04-22T23:21:03.53 0.1 undecidable manual P 62 12.6762 120 0.15 97
IT.MTCL.HGZ. 2023-04-22T23:21:03.14 0.3 undecidable manual S 74 4.1958 150 -0.23 72
IV.FEMA.HNE. 2023-04-22T23:21:02.98 0.1 undecidable manual P 106 8.4804 131 0.28 95
IT.MTCL.HGZ. 2023-04-22T23:21:02.23 0.1 positive manual P 74 4.1958 150 0.09 100
IV.CESI.HHE. 2023-04-22T23:21:02.29 0.3 undecidable manual P 303 4.2957 149 0.14 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.HNE. ML:1.7 0.000505 0.22 AML other m 2023-04-22T23:21:06.56
IV.MML1.EHE. ML:1.6 0.00048699999999999997 0.24 AML other m 2023-04-22T23:21:06.45
IV.MML1.EHN. ML:1.5 0.00035850000000000004 0.54 AML other m 2023-04-22T23:21:06.57
IV.MML1.HNN. ML:1.6 0.00038 0.7 AML other m 2023-04-22T23:21:07.14
IV.NRCA.HHN. ML:1.6 0.0003005 0.44 AML other m 2023-04-22T23:21:08.76
IV.ASSB.HHN. ML:1.5 0.00020700000000000002 0.2 AML other m 2023-04-22T23:21:09.57
IV.CSP1.EHE. ML:1.8 0.0004335 0.54 AML other m 2023-04-22T23:21:09.46
IV.NRCA.HHE. ML:1.5 0.0002275 1.58 AML other m 2023-04-22T23:21:09.88
IV.ASSB.HHE. ML:1.4 0.0001515 0.44 AML other m 2023-04-22T23:21:10.36
IV.CSP1.EHN. ML:1.8 0.00040300000000000004 0.94 AML other m 2023-04-22T23:21:10.12
IV.SNTG.HHE. ML:1.5 0.00017099999999999998 0.1 AML other m 2023-04-22T23:21:11.41
IV.SNTG.HHN. ML:1.6 0.00021200000000000003 0.24 AML other m 2023-04-22T23:21:11.53
IV.MMO1.EHE. ML:1.6 0.00017999999999999998 0.92 AML other m 2023-04-22T23:21:11.30
IV.MMO1.EHN. ML:1.5 0.0001595 0.24 AML other m 2023-04-22T23:21:11.74
IV.ATCC.EHE. ML:1.1 0.0000608 0.34 AML other m 2023-04-22T23:21:12.65
IV.GUMA.HHN. ML:1.7 0.000203 0.5 AML other m 2023-04-22T23:21:12.58
IV.GUMA.HHE. ML:1.6 0.000189 0.46 AML other m 2023-04-22T23:21:14.41
IV.GAVE.EHE. ML:1.4 0.000124 0.18 AML other m 2023-04-22T23:21:14.47
IV.GAVE.EHN. ML:1.3 0.00008854999999999998 0.46 AML other m 2023-04-22T23:21:14.60
IV.EL6.EHN. ML:1.6 0.00013815 0.58 AML other m 2023-04-22T23:21:14.65
IV.ATCC.EHN. ML:1.1 0.00005275000000000001 0.64 AML other m 2023-04-22T23:21:15.59
IV.EL6.EHE. ML:1.6 0.00014035 0.12 AML other m 2023-04-22T23:21:15.38
IV.CING.HHE. ML:1.2 0.0000424 0.78 AML other m 2023-04-22T23:21:16.50
IV.CING.HHN. ML:1.3 0.00005640000000000001 0.94 AML other m 2023-04-22T23:21:16.95
IV.SSFR.HHN. ML:1.4 0.00006459999999999998 0.28 AML other m 2023-04-22T23:21:18.70
IV.SSFR.HHE. ML:1.5 0.0000742 0.18 AML other m 2023-04-22T23:21:18.80
IV.ARRO.EHE. ML:1.1 0.00003344999999999999 1.52 AML other m 2023-04-22T23:21:18.95
IV.ARVD.HHN. ML:1.4 0.00006095 0.12 AML other m 2023-04-22T23:21:19.49
IV.MURB.HHN. ML:1.4 0.0000646 0.48 AML other m 2023-04-22T23:21:19.64
IV.MURB.HHE. ML:1.3 0.0000579 0.2 AML other m 2023-04-22T23:21:19.77
IV.ARRO.EHN. ML:1.1 0.000034450000000000004 0.2 AML other m 2023-04-22T23:21:19.77
IV.ARVD.HHE. ML:1.5 0.0000774 1 AML other m 2023-04-22T23:21:19.40
IV.FRON.EHE. ML:0.9 0.00001685 0.62 AML other m 2023-04-22T23:21:22.62
IV.FRON.EHN. ML:1.1 0.0000269 0.62 AML other m 2023-04-22T23:21:23.51
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