Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 16-07-2023 and time 04:48:39 (Italy) in region 5 km S Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 5 km S Monte Cavallo (MC), on

  • 16-07-2023 02:48:39 (UTC)
  • 16-07-2023 04:48:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9550, 13.0180 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.

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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
Visso MC 6 1107 1252
Preci PG 9 724 1976
Ussita MC 10 444 2420
Sellano PG 10 1079 3499
Pieve Torina MC 10 1458 4957
Fiordimonte MC 11 202 5159
Castelsantangelo sul Nera MC 13 281 5440
Pievebovigliana MC 13 866 6306
Serravalle di Chienti MC 14 1070 7376
Muccia MC 14 915 8291
Fiastra MC 15 559 8850
Acquacanina MC 15 121 8971
Cerreto di Spoleto PG 17 1075 10046
Bolognola MC 18 142 10188
Norcia PG 19 4957 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Foligno (57155 inhabitants)
53 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
96 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 0.9 2023-07-16
02:48:39		 42.9547 13.0178 11 2023-07-16
03:26:57		 Sala Sismica INGV-Roma 119300531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-16 02:48:39 ± 0.04
Latitude 42.9547 ± 0.0027
Longitude 13.0178 ± 0.0025
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 119300531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 237
Semi-minor axis of confidence ellipse (meter) 114
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 235
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35973
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 119300531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-16 03:26:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2023-07-16T02:48:52.94 0.3 undecidable manual S 310 39.9267 50 0.22 68
IV.GAVE.HNE. 2023-07-16T02:48:50.27 0.3 undecidable manual S 199 30.8469 50 -0.03 72
IV.MMUR.HNZ. 2023-07-16T02:48:50.11 3.0 positive manual P 0.12 0
IV.ASSB.HHZ. 2023-07-16T02:48:50.22 0.3 undecidable manual S 289 30.747 50 -0.06 72
IV.MMO1.EHZ. 2023-07-16T02:48:48.79 0.3 undecidable manual S 104 25.8519 50 -0.18 72
IV.CSP1.EHZ. 2023-07-16T02:48:47.72 0.3 undecidable manual S 45 21.4674 50 -0.09 73
IV.ATCC.EHZ. 2023-07-16T02:48:47.22 0.1 undecidable manual P 310 39.9267 50 0.06 94
IV.MML1.EHZ. 2023-07-16T02:48:46.62 0.3 undecidable manual S 348 17.9709 121 -0.24 71
IV.MC2.EHE. 2023-07-16T02:48:46.12 0.6 undecidable manual S 109 14.6742 126 0.22 47
IV.ASSB.HHZ. 2023-07-16T02:48:45.57 0.1 undecidable manual P 289 30.747 50 -0.18 93
IV.GAVE.HNE. 2023-07-16T02:48:45.65 0.1 undecidable manual P 199 30.8469 50 -0.11 95
IV.NRCA.HHZ. 2023-07-16T02:48:45.86 0.3 undecidable manual S 150 15.5733 125 -0.28 70
IV.MMO1.EHZ. 2023-07-16T02:48:44.91 0.1 undecidable manual P 104 25.8519 50 -0.09 97
IV.CESI.HNE. 2023-07-16T02:48:44.93 0.3 undecidable manual S 301 10.7781 135 0.07 75
IV.CSP1.EHZ. 2023-07-16T02:48:44.32 0.1 undecidable manual P 45 21.4674 50 0 97
IV.FDMO.HHE. 2023-07-16T02:48:44.76 0.3 undecidable manual S 32 10.6782 135 -0.08 73
IT.MTCL.HGN. 2023-07-16T02:48:43.44 0.3 undecidable manual S 341 4.5954 157 -0.21 71
IV.NRCA.HHZ. 2023-07-16T02:48:43.35 0.1 undecidable manual P 150 15.5733 125 -0.01 99
IV.FEMA.HNN. 2023-07-16T02:48:43.55 0.6 undecidable manual S 72 2.6973 166 0.11 50
IV.MML1.EHZ. 2023-07-16T02:48:43.74 0.1 undecidable manual P 348 17.9709 121 -0.04 98
IV.MC2.EHE. 2023-07-16T02:48:43.36 0.1 undecidable manual P 109 14.6742 126 0.14 96
IV.FDMO.HHE. 2023-07-16T02:48:42.70 0.1 undecidable manual P 32 10.6782 135 0.09 99
IT.MTCL.HGN. 2023-07-16T02:48:42.02 0.1 undecidable manual P 341 4.5954 157 0.1 100
IV.FEMA.HNN. 2023-07-16T02:48:42.09 0.1 undecidable manual P 72 2.6973 166 0.29 96
IV.CESI.HNE. 2023-07-16T02:48:42.79 0.1 undecidable manual P 301 10.7781 135 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.0 0.0000996 0.14 AML other m 2023-07-16T02:48:46.11
IV.NRCA.HHE. ML:0.9 0.00006950000000000001 0.16 AML other m 2023-07-16T02:48:46.36
IV.MML1.EHN. ML:0.7 0.00003990000000000001 0.1 AML other m 2023-07-16T02:48:46.91
IV.MML1.EHE. ML:0.5 0.000026500000000000004 1.2 AML other m 2023-07-16T02:48:47.37
IV.CSP1.EHE. ML:1.3 0.0001296 1.3 AML other m 2023-07-16T02:48:48.10
IV.CSP1.EHN. ML:1.2 0.000117 0.16 AML other m 2023-07-16T02:48:49.14
IV.MMO1.EHN. ML:0.8 0.00003765 0.26 AML other m 2023-07-16T02:48:49.61
IV.MMO1.EHE. ML:0.7 0.000030200000000000002 1.42 AML other m 2023-07-16T02:48:50.73
IV.ASSB.HHE. ML:0.8 0.00003025 0.72 AML other m 2023-07-16T02:48:50.68
IV.ASSB.HHN. ML:0.8 0.00002875 0.8 AML other m 2023-07-16T02:48:50.39
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