Earthquake with magnitude of ML 0.8 on date 20-03-2023 and time 13:11:08 (Italy) in region 3 km E Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km E Monte Cavallo (MC), on

  • 20-03-2023 12:11:08 (UTC)
  • 20-03-2023 13:11:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9970, 13.0410 at 6 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.

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 3 145 145
Pieve Torina MC 5 1458 1603
Fiordimonte MC 6 202 1805
Pievebovigliana MC 8 866 2671
Visso MC 8 1107 3778
Muccia MC 10 915 4693
Ussita MC 10 444 5137
Fiastra MC 10 559 5696
Serravalle di Chienti MC 11 1070 6766
Acquacanina MC 12 121 6887
Preci PG 13 724 7611
Castelsantangelo sul Nera MC 15 281 7892
Sellano PG 15 1079 8971
Bolognola MC 15 142 9113
Camerino MC 16 6974 16087
Sefro MC 18 422 16509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
54 Km E of Perugia (166134 inhabitants)
58 Km NE of Terni (111501 inhabitants)
66 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
100 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
Reviewed
Rev100
ML 0.8 2023-03-20
12:11:08
42.9972 13.0412 6 2023-03-20
12:47:24
Sala Sismica INGV-Roma 115562771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-20 12:11:08 ± 0.21
Latitude 42.9972 ± 0.0027
Longitude 13.0412 ± 0.0049
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115562771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 198
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.17177
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 115562771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-20 12:47:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2023-03-20T12:11:16.04 0.3 undecidable manual S 162 19.0698 109 0.06 74
IV.CSP1.EHZ. 2023-03-20T12:11:15.25 0.3 undecidable manual S 52 16.9719 111 -0.02 75
IV.MML1.EHZ. 2023-03-20T12:11:14.21 0.3 undecidable manual S 336 14.0748 115 -0.14 74
IV.CESI.HHZ. 2023-03-20T12:11:13.52 0.3 undecidable manual S 274 11.0778 120 0.08 75
IV.CSP1.EHZ. 2023-03-20T12:11:12.66 0.3 undecidable manual P 52 16.9719 111 0.05 75
IV.NRCA.HHZ. 2023-03-20T12:11:12.82 0.6 undecidable manual P 162 19.0698 109 -0.2 48
IV.MML1.EHZ. 2023-03-20T12:11:12.24 0.1 undecidable manual P 336 14.0748 115 0.15 98
IV.CESI.HHZ. 2023-03-20T12:11:11.47 0.1 undecidable manual P 274 11.0778 120 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAMP.HHN. ML:1.2 0.00002765 0.78 AML other m 2023-03-20T12:11:16.46
IV.CAMP.HHE. ML:1.1 0.000027300000000000003 0.24 AML other m 2023-03-20T12:11:16.57
IV.NRCA.HHN. ML:0.4 0.00002095 0.6 AML other m 2023-03-20T12:11:16.74
IV.NRCA.HHE. ML:0.4 0.0000187 0.68 AML other m 2023-03-20T12:11:18.41
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