Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 20-12-2019 and time 03:50:18 (Italy) in region 2 km SW Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 2 km SW Monte Cavallo (MC), on

  • 20-12-2019 02:50:18 (UTC)
  • 20-12-2019 03:50:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9850, 12.9810 at 10 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 2 145 145
Pieve Torina MC 9 1458 1603
Serravalle di Chienti MC 10 1070 2673
Fiordimonte MC 11 202 2875
Visso MC 11 1107 3982
Sellano PG 12 1079 5061
Muccia MC 12 915 5976
Pievebovigliana MC 12 866 6842
Preci PG 13 724 7566
Ussita MC 14 444 8010
Fiastra MC 15 559 8569
Acquacanina MC 17 121 8690
Castelsantangelo sul Nera MC 17 281 8971
Camerino MC 18 6974 15945
Sefro MC 18 422 16367
Cerreto di Spoleto PG 19 1075 17442

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
95 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
Reviewed
Rev100 		ML 0.9 2019-12-20
02:50:18		 42.9853 12.9812 10 2019-12-20
03:01:45		 Sala Sismica INGV-Roma 74807001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-20 02:50:18 ± 0.04
Latitude 42.9853 ± 0.0027
Longitude 12.9812 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74807001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 283
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 75
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) 52
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.01619
Epicentral distance of station farthest from the epicenter (degree) 0.35523
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
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 74807001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-20 03:01:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-12-20T02:50:31.69 0.1 undecidable manual S 14 39.4272 50 0.15 93
IV.MOMA.HNN. 2019-12-20T02:50:31.83 0.3 undecidable manual S 239 39.0276 50 0.39 66
IV.ATCC.EHZ. 2019-12-20T02:50:30.65 0.3 undecidable manual S 309 35.4423 50 0.17 70
IV.MMO1.EHZ. 2019-12-20T02:50:29.06 0.1 undecidable manual S 109 29.6481 50 0.12 95
IV.GAVE.HNZ. 2019-12-20T02:50:29.75 0.3 undecidable manual S 192 33.2445 50 -0.16 70
IV.SNTG.HHZ. 2019-12-20T02:50:28.87 0.1 undecidable manual S 354 30.0477 50 -0.19 94
IV.PF6.EHZ. 2019-12-20T02:50:27.42 0.3 undecidable manual S 46 24.1536 50 -0.06 73
IV.CSP1.EHZ. 2019-12-20T02:50:26.81 0.1 undecidable manual S 57 21.6672 116 0.05 98
IV.MC2.EHZ. 2019-12-20T02:50:26.14 0.3 undecidable manual S 116 18.7701 119 0.27 70
IV.NRCA.HHZ. 2019-12-20T02:50:26.03 0.1 undecidable manual S 147 19.9689 117 -0.22 95
IV.ATCC.EHZ. 2019-12-20T02:50:25.36 0.3 undecidable manual P 309 35.4423 50 -0.03 72
IV.GAVE.HNZ. 2019-12-20T02:50:25.09 0.3 undecidable manual P 192 33.2445 50 0.04 72
IV.EL6.EHZ. 2019-12-20T02:50:25.96 0.1 undecidable manual P 14 39.4272 50 -0.04 95
IV.MOMA.HNN. 2019-12-20T02:50:25.73 0.3 undecidable manual P 239 39.0276 50 -0.21 69
IV.MML1.HNZ. 2019-12-20T02:50:24.36 0.1 undecidable manual S 357 14.2746 126 -0.18 96
IV.MMO1.EHZ. 2019-12-20T02:50:24.53 0.1 undecidable manual P 109 29.6481 50 0.04 97
IV.SNTG.HHZ. 2019-12-20T02:50:24.42 0.1 undecidable manual P 354 30.0477 50 -0.14 95
IV.CSP1.EHZ. 2019-12-20T02:50:23.32 0.1 undecidable manual P 57 21.6672 116 0.09 97
IV.PF6.EHZ. 2019-12-20T02:50:23.53 0.3 undecidable manual P 46 24.1536 50 -0.12 72
IV.FDMO.HHZ. 2019-12-20T02:50:23.55 0.1 undecidable manual S 57 10.2786 135 0.04 100
IV.NRCA.HHZ. 2019-12-20T02:50:22.97 0.1 undecidable manual P 147 19.9689 117 0.03 98
IV.CESI.HHZ. 2019-12-20T02:50:22.62 0.1 undecidable manual S 289 6.5934 148 -0.08 100
IV.FEMA.HNZ. 2019-12-20T02:50:22.79 0.3 undecidable manual S 115 6.0939 150 0.17 73
IV.MML1.HNZ. 2019-12-20T02:50:22.02 0.1 undecidable manual P 357 14.2746 126 0.06 99
IT.MTCL.HGZ. 2019-12-20T02:50:21.98 0.1 undecidable manual S 57 1.7982 170 -0.11 100
IV.CESI.HHZ. 2019-12-20T02:50:21.04 0.1 undecidable manual P 289 6.5934 148 0.15 98
IV.MC2.EHZ. 2019-12-20T02:50:21.93 0.3 undecidable manual P 116 18.7701 119 -0.79 60
IV.FDMO.HHZ. 2019-12-20T02:50:21.53 0.1 undecidable manual P 57 10.2786 135 0.17 97
IV.FEMA.HNZ. 2019-12-20T02:50:20.90 0.3 undecidable manual P 115 6.0939 150 0.06 75
IT.MTCL.HGZ. 2019-12-20T02:50:20.70 0.1 undecidable manual P 57 1.7982 170 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.0 0.00014044220000000002 0.16 AML other m 2019-12-20T02:50:22.92
IV.CESI.HHN. ML:1.2 0.000241079 0.2 AML other m 2019-12-20T02:50:22.79
IV.CESI.HNE. ML:0.9 0.000124604565 0.0784 AML other m 2019-12-20T02:50:22.68
IV.CESI.HNN. ML:1.2 0.0002256897 0.2096 AML other m 2019-12-20T02:50:22.79
IV.FDMO.HHE. ML:1.0 0.00012001985 0.2 AML other m 2019-12-20T02:50:23.70
IV.FDMO.HHN. ML:1.1 0.000148901 0.1792 AML other m 2019-12-20T02:50:23.78
IV.NRCA.HHE. ML:0.7 0.000039327175 0.1792 AML other m 2019-12-20T02:50:26.68
IV.NRCA.HHN. ML:0.7 0.000034471112050000005 0.1408 AML other m 2019-12-20T02:50:26.26
IV.SNTG.HHE. ML:0.5 0.000014909951 0.08 AML other m 2019-12-20T02:50:29.62
IV.SNTG.HHN. ML:0.6 0.000018754684 0.12 AML other m 2019-12-20T02:50:29.63
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