Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 04-03-2023 and time 01:19:52 (Italy) in region 4 km S Montefalco (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km S Montefalco (PG), on

  • 04-03-2023 00:19:52 (UTC)
  • 04-03-2023 01:19:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8560, 12.6400 at 9 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
Montefalco PG 4 5679 5679
Castel Ritaldi PG 5 3278 8957
Giano dell'Umbria PG 6 3846 12803
Gualdo Cattaneo PG 9 6155 18958
Bevagna PG 9 5081 24039
Trevi PG 9 8469 32508
Campello sul Clitunno PG 12 2442 34950
Foligno PG 12 57155 92105
Massa Martana PG 13 3770 95875
Spello PG 16 8645 104520
Spoleto PG 16 38218 142738
Cannara PG 16 4305 147043
Collazzone PG 17 3473 150516
Acquasparta TR 20 4778 155294

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SW of Foligno (57155 inhabitants)
33 Km N of Terni (111501 inhabitants)
35 Km SE of Perugia (166134 inhabitants)
65 Km NE of Viterbo (67173 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
90 Km W of Teramo (54892 inhabitants)
92 Km SE of Arezzo (99543 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
100 Km N of Tivoli (56533 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 1.4 2023-03-04
00:19:52		 42.8563 12.6395 9 2024-03-01
17:18:12		 Bollettino Sismico Italiano INGV 118730731
Reviewed
Rev100 		ML 1.5 2023-03-04
00:19:52		 42.8587 12.6397 9 2023-03-04
00:26:13		 Sala Sismica INGV-Roma 114976671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-04 00:19:52 ± 0.04
Latitude 42.8563 ± 0.0018
Longitude 12.6395 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 118730731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 275
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 0.65830
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 22
Type of magnitude ML
Reference to an origin 114976671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-04 00:26:13

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 35
Type of magnitude ML
Reference to an origin 118730731
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-06-26 09:25:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HHZ. 2023-03-04T00:20:15.77 0.6 undecidable manual S 38 73.0713 50 0.7 38
IV.SSFR.HHZ. 2023-03-04T00:20:13.44 0.6 undecidable manual S 10 65.3901 50 0.44 42
IV.SMA1.EHZ. 2023-03-04T00:20:13.17 1.0 undecidable manual S 114 61.9935 50 1.07 16
IV.EL6.EHZ. 2023-03-04T00:20:13.28 0.3 undecidable manual S 35 64.491 50 0.52 62
IV.ATVO.HHZ. 2023-03-04T00:20:12.16 0.6 undecidable manual S 342 61.2942 50 0.25 44
IV.RM33.EHZ. 2023-03-04T00:20:11.77 0.6 undecidable manual S 129 60.6948 50 0.01 47
IV.MMO1.EHZ. 2023-03-04T00:20:10.70 0.1 undecidable manual S 85 56.0994 50 0.18 91
IV.CSP1.EHZ. 2023-03-04T00:20:09.79 0.3 undecidable manual S 60 52.8027 50 0.14 69
IV.SNTG.HHZ. 2023-03-04T00:20:09.40 0.3 undecidable manual S 29 50.5161 50 0.36 66
IV.MC2.EHZ. 2023-03-04T00:20:08.03 0.3 undecidable manual S 82 45.1215 50 0.44 66
IV.MURB.HHZ. 2023-03-04T00:20:08.14 0.3 undecidable manual S 348 46.0206 50 0.29 68
IV.FOSV.EHZ. 2023-03-04T00:20:08.93 0.3 undecidable manual S 11 49.617 50 0.13 70
IV.LNSS.HHZ. 2023-03-04T00:20:07.04 0.3 undecidable manual S 131 43.1235 50 -0.02 72
IV.MGAB.HHZ. 2023-03-04T00:20:06.72 0.6 undecidable manual S 278 43.3233 50 -0.4 44
IV.MML1.EHZ. 2023-03-04T00:20:05.66 0.3 undecidable manual S 43 39.2274 50 -0.37 67
IV.CING.HHZ. 2023-03-04T00:20:05.57 0.3 undecidable manual P 38 73.0713 50 0.01 68
IV.NRCA.HHZ. 2023-03-04T00:20:05.72 0.3 undecidable manual S 94 38.7279 50 -0.17 70
IT.MTCL.HGZ. 2023-03-04T00:20:04.06 0.6 undecidable manual S 62 32.9448 50 -0.3 46
IV.EL6.EHZ. 2023-03-04T00:20:04.12 0.3 undecidable manual P 35 64.491 50 -0.11 68
IV.ATMI.HHZ. 2023-03-04T00:20:04.45 1.0 undecidable manual P 331 60.9945 50 0.76 19
IV.ATCC.EHZ. 2023-03-04T00:20:04.91 0.3 undecidable manual S 0 36.4413 50 -0.38 68
IV.SSFR.HHZ. 2023-03-04T00:20:04.16 0.3 undecidable manual P 10 65.3901 50 -0.21 66
IV.FEMA.HNE. 2023-03-04T00:20:04.84 0.3 undecidable manual S 70 35.3424 50 -0.15 71
IV.ARRO.EHZ. 2023-03-04T00:20:04.30 0.6 undecidable manual S 161 32.4453 50 0.09 48
IV.RM33.EHZ. 2023-03-04T00:20:03.41 0.3 undecidable manual P 129 60.6948 50 -0.24 67
IV.SMA1.EHZ. 2023-03-04T00:20:03.84 1.0 undecidable manual P 114 61.9935 50 -0.01 23
IV.ATVO.HHZ. 2023-03-04T00:20:03.66 0.6 undecidable manual P 342 61.2942 50 -0.08 46
IV.CESX.HHZ. 2023-03-04T00:20:02.51 0.3 undecidable manual S 189 27.8499 107 -0.19 71
IV.GAVE.HNZ. 2023-03-04T00:20:02.63 0.3 undecidable manual S 131 27.6501 108 0 74
IV.CSP1.EHZ. 2023-03-04T00:20:02.32 0.3 undecidable manual P 60 52.8027 50 -0.11 69
IV.MMO1.EHZ. 2023-03-04T00:20:02.88 0.1 undecidable manual P 85 56.0994 50 -0.06 93
IV.CESI.HHZ. 2023-03-04T00:20:02.19 0.3 undecidable manual S 52 27.1506 108 -0.27 70
IV.FOSV.EHZ. 2023-03-04T00:20:01.79 0.1 undecidable manual P 11 49.617 50 -0.16 92
IV.MGAB.HHZ. 2023-03-04T00:20:01.02 0.6 undecidable manual P 278 43.3233 50 0.05 48
IV.SNTG.HHZ. 2023-03-04T00:20:01.94 0.1 undecidable manual P 29 50.5161 50 -0.14 92
IV.MURB.HHZ. 2023-03-04T00:20:01.28 0.1 undecidable manual P 348 46.0206 50 -0.12 94
IV.LNSS.HHZ. 2023-03-04T00:20:00.78 0.3 undecidable manual P 131 43.1235 50 -0.16 70
IV.MML1.EHZ. 2023-03-04T00:20:00.05 0.1 undecidable manual P 43 39.2274 50 -0.3 91
IV.MC2.EHZ. 2023-03-04T00:20:00.91 1.0 undecidable manual P 82 45.1215 50 -0.34 22
IV.ASSB.HHZ. 2023-03-04T00:20:00.11 0.3 undecidable manual S 4 20.6682 113 -0.27 71
IV.NRCA.HHZ. 2023-03-04T00:20:00.12 0.3 undecidable manual P 94 38.7279 50 -0.14 71
IV.ATCC.EHZ. 2023-03-04T00:19:59.66 0.1 positive manual P 0 36.4413 50 -0.26 92
IV.FEMA.HNE. 2023-03-04T00:19:59.80 0.6 undecidable manual P 70 35.3424 50 0.06 48
IV.ARRO.EHZ. 2023-03-04T00:19:59.51 0.6 undecidable manual P 161 32.4453 50 0.21 47
IT.MTCL.HGZ. 2023-03-04T00:19:59.43 0.3 undecidable manual P 62 32.9448 50 0.05 73
IV.CESI.HHZ. 2023-03-04T00:19:58.20 0.1 positive manual P 52 27.1506 108 -0.09 97
IT.FOPC.HGZ. 2023-03-04T00:19:58.25 0.3 undecidable manual S 22 13.5753 123 0.07 75
IV.CESX.HHZ. 2023-03-04T00:19:58.29 0.3 undecidable manual P 189 27.8499 107 -0.13 72
IV.GAVE.HNZ. 2023-03-04T00:19:58.43 0.3 undecidable manual P 131 27.6501 108 0.05 74
IV.ASSB.HHZ. 2023-03-04T00:19:57.07 0.1 positive manual P 4 20.6682 113 -0.01 100
IT.GNU.HGZ. 2023-03-04T00:19:56.72 0.3 undecidable manual S 224 8.0808 137 0 77
IT.FOPC.HGZ. 2023-03-04T00:19:56.14 0.1 undecidable manual P 22 13.5753 123 0.33 95
IV.MOMA.HHZ. 2023-03-04T00:19:56.86 0.3 undecidable manual S 224 8.0808 137 0.14 75
IV.MOMA.HHZ. 2023-03-04T00:19:55.22 0.1 positive manual P 224 8.0808 137 0.25 97
IT.GNU.HGZ. 2023-03-04T00:19:55.20 0.1 undecidable manual P 224 8.0808 137 0.23 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HNN. ML:1.6 0.0006419999999999999 1.48 AML other m 2023-03-04T00:19:57.92
IV.MOMA.HNE. ML:1.7 0.0008 0.86 AML other m 2023-03-04T00:19:57.62
IV.MOMA.HHE. ML:1.7 0.0008185 0.86 AML other m 2023-03-04T00:19:57.62
IV.MOMA.HHN. ML:1.2 0.0002455 1.7 AML other m 2023-03-04T00:19:58.92
IV.ASSB.HHE. ML:1.4 0.0002065 0.38 AML other m 2023-03-04T00:20:00.67
IV.ASSB.HHN. ML:1.3 0.000157 0.32 AML other m 2023-03-04T00:20:01.69
IV.CESI.HHN. ML:1.1 0.00007735 1.28 AML other m 2023-03-04T00:20:03.87
IV.CESI.HHE. ML:1.1 0.00007355 0.32 AML other m 2023-03-04T00:20:03.31
IV.CESX.HHE. ML:1.4 0.000125 0.64 AML other m 2023-03-04T00:20:03.06
IV.CESX.HHN. ML:1.6 0.0002205 0.78 AML other m 2023-03-04T00:20:03.33
IV.ATCC.EHN. ML:1.6 0.00013900000000000002 0.68 AML other m 2023-03-04T00:20:05.14
IV.ATCC.EHE. ML:1.5 0.00011899999999999999 0.32 AML other m 2023-03-04T00:20:05.35
IV.MML1.EHE. ML:1.3 0.0000633 0.8 AML other m 2023-03-04T00:20:06.23
IV.NRCA.HHN. ML:1.4 0.0001025 0.14 AML other m 2023-03-04T00:20:06.54
IV.MURB.HHE. ML:1.9 0.00020800000000000001 0.3 AML other m 2023-03-04T00:20:08.48
IV.MML1.EHN. ML:1.1 0.000044952595 0.18 AML other m 2023-03-04T00:20:08.15
IV.NRCA.HHE. ML:1.4 0.00009525 0.14 AML other m 2023-03-04T00:20:08.52
IV.MURB.HHN. ML:1.9 0.000232 0.24 AML other m 2023-03-04T00:20:08.61
IV.MMO1.EHN. ML:1.6 0.00009965 1.56 AML other m 2023-03-04T00:20:10.97
IV.MMO1.EHE. ML:1.5 0.0000702 1.12 AML other m 2023-03-04T00:20:11.56
IV.SSFR.HHN. ML:1.4 0.0000465 0.96 AML other m 2023-03-04T00:20:14.27
IV.SSFR.HHE. ML:1.7 0.0000839 0.18 AML other m 2023-03-04T00:20:14.51
IV.FOSV.EHN. ML:0.9 0.000021028245 0.28 AML other m 2023-03-04T00:20:11.29
IV.SNTG.HHN. ML:0.9 0.00001991896 0.12 AML other m 2023-03-04T00:20:10.54
IV.SNTG.HHE. ML:0.9 0.000019270545 0.18 AML other m 2023-03-04T00:20:10.73
IV.CSP1.EHE. ML:1.5 0.00008386285 0.16 AML other m 2023-03-04T00:20:10.66
IV.CSP1.EHN. ML:1.5 0.00007971774 0.18 AML other m 2023-03-04T00:20:11.25
IV.RM33.EHE. ML:1.2 0.00003280583 0.14 AML other m 2023-03-04T00:20:13.57
IV.RM33.EHN. ML:1.2 0.000035724855 0.22 AML other m 2023-03-04T00:20:13.61
IV.ATVO.HHE. ML:1.0 0.000018941975 0.2 AML other m 2023-03-04T00:20:14.79
IV.SMA1.EHN. ML:1.2 0.000032367425000000006 1.38 AML other m 2023-03-04T00:20:14.34
IV.SMA1.EHE. ML:1.3 0.000041566024999999996 0.56 AML other m 2023-03-04T00:20:14.20
IV.EL6.EHE. ML:1.4 0.00005124286 0.24 AML other m 2023-03-04T00:20:14.31
IV.CING.HHN. ML:1.3 0.000028746815 1.94 AML other m 2023-03-04T00:20:16.58
IV.CING.HHE. ML:1.1 0.00002243533 1.3 AML other m 2023-03-04T00:20:17.24
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