Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-02-2023 and time 08:34:57 (Italy) in region 3 km W Monte Cavallo (MC)

A magnitude ML 1.5 earthquake occured in region: 3 km W Monte Cavallo (MC), on

  • 23-02-2023 07:34:57 (UTC)
  • 23-02-2023 08:34:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9870, 12.9610 at 11 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 4 145 145
Serravalle di Chienti MC 10 1070 1215
Pieve Torina MC 10 1458 2673
Sellano PG 11 1079 3752
Fiordimonte MC 12 202 3954
Visso MC 12 1107 5061
Muccia MC 13 915 5976
Pievebovigliana MC 13 866 6842
Preci PG 14 724 7566
Ussita MC 15 444 8010
Fiastra MC 17 559 8569
Sefro MC 18 422 8991
Acquacanina MC 18 121 9112
Valtopina PG 19 1398 10510
Castelsantangelo sul Nera MC 19 281 10791
Camerino MC 19 6974 17765
Cerreto di Spoleto PG 19 1075 18840
Nocera Umbra PG 20 5839 24679

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
54 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)
94 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 2023-02-23
07:34:57		 42.9867 12.9608 11 2024-03-01
17:17:58		 Bollettino Sismico Italiano INGV 115099581
Reviewed
Rev100 		ML 1.5 2023-02-23
07:34:57		 42.9878 12.9615 12 2023-02-23
07:40:46		 Sala Sismica INGV-Roma 114726421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-23 07:34:57 ± 0.05
Latitude 42.9867 ± 0.0027
Longitude 12.9608 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 115099581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 346
Semi-minor axis of confidence ellipse (meter) 244
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
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 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.02878
Epicentral distance of station farthest from the epicenter (degree) 0.63042
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 39
Type of magnitude ML
Reference to an origin 115099581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-03-08 09:38:26

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 114726421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-23 07:40:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2023-02-23T07:35:16.58 0.3 undecidable manual S 342 61.8936 50 0.37 64
IV.RM33.EHZ. 2023-02-23T07:35:15.50 0.6 undecidable manual S 159 56.8986 50 0.63 40
IV.ATFO.HHZ. 2023-02-23T07:35:14.38 0.3 undecidable manual S 323 52.6029 50 0.64 60
IV.SSFR.HHZ. 2023-02-23T07:35:13.92 0.3 undecidable manual S 344 51.9036 50 0.37 65
IV.MURB.HHZ. 2023-02-23T07:35:12.86 0.3 undecidable manual S 311 46.8198 50 0.68 60
IV.CING.HHZ. 2023-02-23T07:35:12.69 0.3 undecidable manual S 24 47.1195 50 0.42 65
IV.LNSS.HHZ. 2023-02-23T07:35:11.28 0.6 undecidable manual S 171 43.0236 50 0.09 47
IV.MOMA.HHZ. 2023-02-23T07:35:10.00 0.6 undecidable manual S 238 37.7289 50 0.25 46
IV.PIEI.HHZ. 2023-02-23T07:35:09.17 0.6 undecidable manual P 331 69.9744 50 -0.23 43
IV.GAVE.EHZ. 2023-02-23T07:35:08.61 0.3 undecidable manual S 189 33.1446 50 0.08 72
IV.GUMA.HHZ. 2023-02-23T07:35:08.73 0.6 undecidable manual S 74 31.5462 50 0.63 42
IV.SNTG.HHZ. 2023-02-23T07:35:07.44 0.6 undecidable manual S 357 29.8479 50 -0.21 47
IV.RM33.EHZ. 2023-02-23T07:35:07.44 0.1 undecidable manual P 159 56.8986 50 0.05 92
IV.FRON.EHZ. 2023-02-23T07:35:07.81 0.3 undecidable manual P 342 61.8936 50 -0.35 64
IV.ASSB.HHZ. 2023-02-23T07:35:06.00 0.6 undecidable manual S 284 25.2525 50 -0.44 45
IV.SSFR.HHZ. 2023-02-23T07:35:06.37 0.3 undecidable manual P 344 51.9036 50 -0.26 67
IV.PF6.EHZ. 2023-02-23T07:35:06.17 0.6 undecidable manual S 48 25.2525 50 -0.27 47
IV.ATFO.HHZ. 2023-02-23T07:35:06.54 0.6 undecidable manual P 323 52.6029 50 -0.19 45
7F.SIB3.EHZ. 2023-02-23T07:35:06.88 0.6 undecidable manual S 116 27.9498 50 -0.28 46
7F.SIB1.EHZ. 2023-02-23T07:35:06.82 0.6 undecidable manual S 112 27.0507 50 -0.1 48
IV.NRCA.HHZ. 2023-02-23T07:35:05.08 0.3 undecidable manual S 144 21.0678 50 -0.23 71
IV.LNSS.HHZ. 2023-02-23T07:35:05.06 0.3 negative manual P 171 43.0236 50 -0.2 69
IV.MC2.EHZ. 2023-02-23T07:35:05.34 0.3 undecidable manual S 114 20.2686 50 0.23 71
IV.MURB.HHZ. 2023-02-23T07:35:05.73 0.1 negative manual P 311 46.8198 50 -0.1 93
IV.CSP1.EHZ. 2023-02-23T07:35:05.76 0.3 undecidable manual S 59 22.9548 50 -0.06 73
IV.CING.HHZ. 2023-02-23T07:35:05.74 0.3 undecidable manual P 24 47.1195 50 -0.14 69
IV.SEF1.HNN. 2023-02-23T07:35:04.06 0.3 undecidable manual S 357 17.7711 121 -0.32 70
IV.MML1.EHZ. 2023-02-23T07:35:03.25 0.3 undecidable manual S 4 14.0748 127 -0.07 74
IV.MOMA.HHZ. 2023-02-23T07:35:03.93 0.6 undecidable manual P 238 37.7289 50 -0.5 43
IV.GAVE.EHZ. 2023-02-23T07:35:03.61 0.3 undecidable manual P 189 33.1446 50 -0.12 71
IV.GUMA.HHZ. 2023-02-23T07:35:03.75 0.6 negative manual P 74 31.5462 50 0.27 46
7F.SIB1.EHZ. 2023-02-23T07:35:02.75 0.1 undecidable manual P 112 27.0507 50 -0.05 97
IV.CSP1.EHZ. 2023-02-23T07:35:02.08 0.1 undecidable manual P 59 22.9548 50 -0.08 97
IV.SNTG.HHZ. 2023-02-23T07:35:02.93 0.1 positive manual P 357 29.8479 50 -0.29 92
IV.ASSB.HHZ. 2023-02-23T07:35:02.25 0.6 undecidable manual P 284 25.2525 50 -0.27 47
IV.FEMA.HNZ. 2023-02-23T07:35:02.08 0.3 undecidable manual S 111 7.6812 144 0.32 71
IV.PF6.EHZ. 2023-02-23T07:35:02.30 0.1 undecidable manual P 48 25.2525 50 -0.22 94
IV.FDMO.HHZ. 2023-02-23T07:35:02.60 0.3 undecidable manual S 62 11.6772 133 -0.07 75
7F.SIB3.EHZ. 2023-02-23T07:35:02.68 0.3 undecidable manual P 116 27.9498 50 -0.26 70
IT.MTCL.HGZ. 2023-02-23T07:35:01.08 0.3 undecidable manual S 76 3.1968 163 0.02 77
IV.CESI.HHZ. 2023-02-23T07:35:01.36 0.3 undecidable manual S 294 4.995 155 0.08 75
IV.NRCA.HHZ. 2023-02-23T07:35:01.73 0.1 positive manual P 144 21.0678 50 -0.14 97
IV.SEF1.HNN. 2023-02-23T07:35:01.14 0.3 undecidable manual P 357 17.7711 121 -0.19 72
IV.MC2.EHZ. 2023-02-23T07:35:01.88 0.3 undecidable manual P 114 20.2686 50 0.13 73
IV.FDMO.HHZ. 2023-02-23T07:35:00.40 0.1 undecidable manual P 62 11.6772 133 0.06 100
IV.MML1.EHZ. 2023-02-23T07:35:00.69 0.1 undecidable manual P 4 14.0748 127 -0.03 100
IV.FEMA.HNZ. 2023-02-23T07:35:00.04 0.1 undecidable manual P 111 7.6812 144 0.22 97
IT.MTCL.HGZ. 2023-02-23T07:34:59.55 0.1 undecidable manual P 76 3.1968 163 0.14 100
IV.CESI.HHZ. 2023-02-23T07:34:59.70 0.1 undecidable manual P 294 4.995 155 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IT.MTCL.HGE. ML:3.6 0.072 0.14 AML other m 2023-02-23T07:35:01.21
IT.MTCL.HGN. ML:3.5 0.0555 0.08 AML other m 2023-02-23T07:35:01.37
IV.CESI.HHE. ML:1.6 0.000683 0.1 AML other m 2023-02-23T07:35:01.44
IV.CESI.HHN. ML:1.7 0.0008105 0.3 AML other m 2023-02-23T07:35:01.45
IV.FDMO.HHN. ML:1.8 0.0006695 0.18 AML other m 2023-02-23T07:35:02.82
IV.FDMO.HHE. ML:1.6 0.000413 1.58 AML other m 2023-02-23T07:35:03.01
IV.MML1.EHE. ML:1.8 0.0006799999999999999 0.18 AML other m 2023-02-23T07:35:03.50
IV.MML1.HNE. ML:1.8 0.0006770000000000001 0.18 AML other m 2023-02-23T07:35:03.50
IV.MML1.EHN. ML:1.5 0.000322 0.1 AML other m 2023-02-23T07:35:03.60
IV.MML1.HNN. ML:1.6 0.00040449999999999997 0.68 AML other m 2023-02-23T07:35:04.60
IV.NRCA.HHN. ML:2.1 0.0009575 0.1 AML other m 2023-02-23T07:35:05.25
IV.NRCA.HNN. ML:2.1 0.000915 0.12 AML other m 2023-02-23T07:35:05.25
IV.NRCA.HHE. ML:1.8 0.00047599999999999997 0.12 AML other m 2023-02-23T07:35:05.57
IV.NRCA.HNE. ML:1.8 0.000453 0.12 AML other m 2023-02-23T07:35:05.58
IV.CSP1.EHN. ML:1.7 0.00032250000000000003 1.64 AML other m 2023-02-23T07:35:06.03
IV.ASSB.HHN. ML:1.0 0.000063 0.8 AML other m 2023-02-23T07:35:06.23
IV.CSP1.EHE. ML:1.7 0.000323 0.6 AML other m 2023-02-23T07:35:06.23
IV.ASSB.HHE. ML:1.0 0.00005665000000000001 1.38 AML other m 2023-02-23T07:35:06.13
IV.SNTG.HHE. ML:1.0 0.00004845 1.38 AML other m 2023-02-23T07:35:07.01
IV.SNTG.HHN. ML:1.1 0.0000566 1.42 AML other m 2023-02-23T07:35:07.24
IV.GUMA.HHE. ML:1.6 0.000192 0.18 AML other m 2023-02-23T07:35:08.84
IV.GAVE.EHN. ML:1.4 0.00009584999999999999 0.98 AML other m 2023-02-23T07:35:09.39
IV.GAVE.EHE. ML:1.3 0.0000906 0.1 AML other m 2023-02-23T07:35:09.47
IV.GUMA.HHN. ML:1.3 0.00009265000000000002 1.08 AML other m 2023-02-23T07:35:10.58
IV.MOMA.HHE. ML:1.0 0.00004195 1.12 AML other m 2023-02-23T07:35:10.91
IV.LNSS.HHN. ML:1.2 0.00004627643 0.2048 AML other m 2023-02-23T07:35:14.07
IV.MOMA.HHN. ML:0.9 0.000027699995 0.1216 AML other m 2023-02-23T07:35:11.12
IV.LNSS.HHE. ML:1.3 0.0000591 0.56 AML other m 2023-02-23T07:35:12.66
IV.CING.HHN. ML:1.2 0.000049949999999999994 1.2 AML other m 2023-02-23T07:35:13.27
IV.CING.HHE. ML:1.0 0.000029199999999999998 1.1 AML other m 2023-02-23T07:35:13.43
IV.MURB.HHE. ML:1.6 0.0001245 0.34 AML other m 2023-02-23T07:35:13.65
IV.MURB.HHN. ML:1.4 0.00007630000000000001 0.2 AML other m 2023-02-23T07:35:14.43
IV.SSFR.HHE. ML:1.3 0.0000461 0.16 AML other m 2023-02-23T07:35:15.33
IV.SSFR.HHN. ML:1.2 0.000032634604999999994 0.1216 AML other m 2023-02-23T07:35:16.62
IV.CESI.HNN. ML:1.6 0.00058348575 0.1152 AML other m 2023-02-23T07:35:01.45
IV.CESI.HNE. ML:1.6 0.0006741135 0.0896 AML other m 2023-02-23T07:35:01.49
IV.RM33.EHN. ML:1.0 0.000020344544999999998 0.1856 AML other m 2023-02-23T07:35:16.42
IV.FRON.EHE. ML:1.0 0.000017533654999999998 0.16 AML other m 2023-02-23T07:35:16.74
IV.PIEI.HHE. ML:0.8 0.000010649588499999999 0.1024 AML other m 2023-02-23T07:35:21.56
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