Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 09-12-2020 and time 04:16:51 (UTC) in region 6 km W Monte Cavallo (MC)

A magnitude ML 2.1 earthquake occured in region: 6 km W Monte Cavallo (MC), on

  • 09-12-2020 04:16:51 (UTC)
  • 09-12-2020 05:16:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9920, 12.9240 at 13 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 6 145 145
Serravalle di Chienti MC 9 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 12 1458 3752
Muccia MC 14 915 4667
Fiordimonte MC 15 202 4869
Visso MC 15 1107 5976
Pievebovigliana MC 15 866 6842
Preci PG 16 724 7566
Valtopina PG 16 1398 8964
Nocera Umbra PG 17 5839 14803
Sefro MC 17 422 15225
Ussita MC 18 444 15669
Foligno PG 18 57155 72824
Trevi PG 19 8469 81293
Cerreto di Spoleto PG 19 1075 82368
Fiastra MC 20 559 82927
Camerino MC 20 6974 89901

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
95 Km S of Fano (60888 inhabitants)
100 Km SE of Arezzo (99543 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 2.1 2020-12-09
04:16:51		 42.9917 12.924 13 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87261361
Reviewed
Rev100 		ML 2.1 2020-12-09
04:16:51		 42.9902 12.9293 13 2020-12-09
04:26:44		 Sala Sismica INGV-Roma 85306371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-09 04:16:51 ± 0.05
Latitude 42.9917 ± 0.0027
Longitude 12.9240 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87261361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 293
Semi-minor axis of confidence ellipse (meter) 148
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 323
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 28
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.76982
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 85306371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-09 04:26:44

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 87261361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-18 01:13:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2020-12-09T04:17:06.41 0.6 undecidable manual P 336 85.4478 92 0.71 36
IV.LNSS.HHZ. 2020-12-09T04:17:05.52 0.6 undecidable manual S 168 44.1225 94 0.14 45
IV.EL6.EHZ. 2020-12-09T04:17:04.56 0.6 undecidable manual S 21 40.1265 94 0.26 45
IV.MPAG.EHZ. 2020-12-09T04:17:03.66 0.3 undecidable manual P 349 71.9724 92 0.03 67
IV.FOSV.EHZ. 2020-12-09T04:17:03.35 0.6 undecidable manual S 339 36.1416 95 0.11 47
IV.GUMA.HHZ. 2020-12-09T04:17:03.36 0.6 undecidable manual S 77 34.2435 96 0.62 41
IV.MOMA.HHZ. 2020-12-09T04:17:03.47 0.6 undecidable manual S 234 35.5422 95 0.39 44
IV.MMO1.EHZ. 2020-12-09T04:17:02.70 0.6 undecidable manual S 107 34.2435 96 -0.05 48
IV.GAVE.EHZ. 2020-12-09T04:17:02.56 0.6 undecidable manual S 184 33.3444 96 0.07 47
IV.FRON.EHZ. 2020-12-09T04:17:01.77 0.3 undecidable manual P 345 60.495 93 -0.09 67
IV.SNTG.HNZ. 2020-12-09T04:17:01.40 0.6 undecidable manual S 3 29.2485 97 -0.01 48
IV.ARVD.HHZ. 2020-12-09T04:17:01.11 0.1 undecidable manual P 1 56.1993 93 -0.09 90
IV.MNTT.EHZ. 2020-12-09T04:17:01.82 0.3 undecidable manual P 82 55.0005 93 0.8 55
IV.SSFR.HHZ. 2020-12-09T04:17:00.21 0.3 undecidable manual P 347 50.616 93 -0.13 67
IV.CSP1.EHZ. 2020-12-09T04:17:00.43 0.3 undecidable manual S 64 25.3524 100 0.05 72
IV.PF6.EHZ. 2020-12-09T04:17:00.66 0.6 undecidable manual S 53 27.2505 98 -0.23 46
IV.CESX.HHZ. 2020-12-09T04:17:00.19 0.3 undecidable manual P 213 50.616 93 -0.15 67
IV.SMA1.EHZ. 2020-12-09T04:17:00.49 0.3 undecidable manual P 140 52.2033 93 -0.1 68
IV.MC2.EHZ. 2020-12-09T04:17:00.04 0.3 undecidable manual S 112 23.2545 101 0.2 70
IV.FIU1.HNN. 2020-12-09T04:16:59.44 0.6 undecidable manual S 2 21.867 103 -0.03 48
IV.ARRO.EHZ. 2020-12-09T04:16:59.60 0.3 undecidable manual P 196 47.5191 93 -0.27 66
IV.ASSB.HHZ. 2020-12-09T04:16:59.55 0.6 undecidable manual S 285 22.2555 102 -0.02 48
IV.LNSS.HHZ. 2020-12-09T04:16:59.10 0.1 undecidable manual P 168 44.1225 94 -0.25 89
IV.NRCA.HNZ. 2020-12-09T04:16:59.60 0.6 undecidable manual S 139 23.3544 101 -0.27 46
IV.MURB.HHZ. 2020-12-09T04:16:59.47 0.3 undecidable manual P 313 44.1225 94 0.12 69
IV.SAP2.EHZ. 2020-12-09T04:16:59.88 0.3 undecidable manual P 73 40.2264 94 1.13 48
IV.MOMA.HHZ. 2020-12-09T04:16:58.04 0.3 undecidable manual P 234 35.5422 95 0.02 71
IV.SEF1.HNZ. 2020-12-09T04:16:58.21 0.3 undecidable manual S 6 17.2716 110 -0.09 72
IT.FOPC.HGZ. 2020-12-09T04:16:58.91 0.3 undecidable manual S 262 18.0708 108 0.41 68
IV.EL6.EHZ. 2020-12-09T04:16:58.65 0.1 undecidable manual P 21 40.1265 94 -0.08 93
IV.GUMA.HHZ. 2020-12-09T04:16:58.00 0.1 undecidable manual P 77 34.2435 96 0.17 92
IV.GAVE.EHZ. 2020-12-09T04:16:57.55 0.1 undecidable manual P 184 33.3444 96 -0.13 93
IV.FDMO.HHZ. 2020-12-09T04:16:57.26 0.3 undecidable manual S 69 14.1747 118 -0.27 71
IV.MMO1.EHZ. 2020-12-09T04:16:57.66 0.1 undecidable manual P 107 34.2435 96 -0.17 93
IV.FOSV.EHZ. 2020-12-09T04:16:57.98 0.1 undecidable manual P 339 36.1416 95 -0.13 92
IV.NRCA.HNZ. 2020-12-09T04:16:56.00 0.1 undecidable manual P 139 23.3544 101 -0.17 94
IV.MDAR.HNN. 2020-12-09T04:16:56.82 0.3 undecidable manual P 38 28.4493 98 -0.12 71
IV.FEMA.HNZ. 2020-12-09T04:16:56.74 0.3 undecidable manual S 108 10.6782 129 -0.03 74
IV.MC2.EHZ. 2020-12-09T04:16:56.11 0.1 undecidable manual P 112 23.2545 101 -0.04 97
IV.CSP1.EHZ. 2020-12-09T04:16:56.40 0.1 undecidable manual P 64 25.3524 100 -0.06 96
IV.SNTG.HNZ. 2020-12-09T04:16:56.84 0.1 undecidable manual P 3 29.2485 97 -0.22 92
IV.PF6.EHZ. 2020-12-09T04:16:56.53 0.3 undecidable manual P 53 27.2505 98 -0.23 69
IV.SEF1.HNZ. 2020-12-09T04:16:55.18 0.1 undecidable manual P 6 17.2716 110 -0.09 97
IT.FOPC.HGZ. 2020-12-09T04:16:55.53 0.1 undecidable manual P 262 18.0708 108 0.15 96
IV.FIU1.HNN. 2020-12-09T04:16:55.84 0.1 undecidable manual P 2 21.867 103 -0.1 95
IV.CESI.HHZ. 2020-12-09T04:16:55.48 0.3 undecidable manual S 313 2.0979 169 -0.09 75
IV.ASSB.HHZ. 2020-12-09T04:16:55.95 0.1 undecidable manual P 285 22.2555 102 -0.05 96
IT.MTCL.HGZ. 2020-12-09T04:16:55.78 0.1 undecidable manual S 88 6.0939 149 -0.18 98
IV.FEMA.HNZ. 2020-12-09T04:16:54.45 0.1 undecidable manual P 108 10.6782 129 0.07 97
IV.FDMO.HHZ. 2020-12-09T04:16:54.71 0.3 undecidable manual P 69 14.1747 118 -0.11 73
IV.CESI.HHZ. 2020-12-09T04:16:53.77 0.1 undecidable manual P 313 2.0979 169 0.08 99
IT.MTCL.HGZ. 2020-12-09T04:16:53.89 0.1 undecidable manual P 88 6.0939 149 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNE. ML:1.9 0.0011300000000000001 0.52 AML other m 2020-12-09T04:16:55.51
IV.CESI.HHE. ML:1.9 0.001059 0.62 AML other m 2020-12-09T04:16:55.52
IV.CESI.HHN. ML:2.0 0.001515 0.28 AML other m 2020-12-09T04:16:55.67
IV.CESI.HNN. ML:2.0 0.0014750000000000002 0.92 AML other m 2020-12-09T04:16:56.07
IV.FEMA.HNN. ML:2.2 0.001685 1.5 AML other m 2020-12-09T04:16:57.22
IV.FDMO.HHN. ML:2.4 0.002005 0.2 AML other m 2020-12-09T04:16:57.48
IV.FDMO.HHE. ML:2.3 0.001765 0.54 AML other m 2020-12-09T04:16:57.67
IV.FEMA.HNE. ML:2.3 0.00207 1 AML other m 2020-12-09T04:16:57.81
IV.NRCA.HHN. ML:2.8 0.003345 0.12 AML other m 2020-12-09T04:16:59.77
IV.NRCA.HNN. ML:2.7 0.003285 0.12 AML other m 2020-12-09T04:16:59.77
IV.ASSB.HHN. ML:2.4 0.0014199999999999998 0.08 AML other m 2020-12-09T04:16:59.87
IV.NRCA.HHE. ML:2.7 0.0027350000000000005 0.74 AML other m 2020-12-09T04:17:00.40
IV.NRCA.HNE. ML:2.6 0.002535 0.74 AML other m 2020-12-09T04:17:00.40
IV.ASSB.HHE. ML:2.2 0.000918 1.56 AML other m 2020-12-09T04:17:00.09
IV.CSP1.EHN. ML:2.4 0.00133 0.52 AML other m 2020-12-09T04:17:00.87
IV.CSP1.EHE. ML:2.3 0.00117 0.62 AML other m 2020-12-09T04:17:00.84
IV.SNTG.HHE. ML:1.7 0.000235 0.76 AML other m 2020-12-09T04:17:01.98
IV.GAVE.EHE. ML:2.1 0.00053 1.42 AML other m 2020-12-09T04:17:02.28
IV.GAVE.EHN. ML:2.1 0.00048150000000000005 1.4 AML other m 2020-12-09T04:17:03.14
IV.SNTG.HHN. ML:1.7 0.0002205 0.62 AML other m 2020-12-09T04:17:03.88
IV.GUMA.HHE. ML:2.1 0.0005814999999999999 0.32 AML other m 2020-12-09T04:17:03.70
IV.MOMA.HNN. ML:2.0 0.00037 0.6 AML other m 2020-12-09T04:17:03.83
IV.MOMA.HHN. ML:2.0 0.00034899999999999997 0.6 AML other m 2020-12-09T04:17:03.53
IV.MOMA.HHE. ML:2.0 0.000361 0.18 AML other m 2020-12-09T04:17:04.33
IV.MOMA.HNE. ML:2.0 0.00035099999999999997 0.34 AML other m 2020-12-09T04:17:04.59
IV.EL6.EHN. ML:2.1 0.00039549999999999996 0.9 AML other m 2020-12-09T04:17:05.79
IV.EL6.EHE. ML:2.1 0.000379 1.44 AML other m 2020-12-09T04:17:06.24
IV.LNSS.HHN. ML:2.1 0.0003885 0.52 AML other m 2020-12-09T04:17:06.63
IV.FOSV.EHN. ML:1.6 0.00016350000000000002 1.2 AML other m 2020-12-09T04:17:06.18
IV.LNSS.HHE. ML:2.0 0.00029400000000000004 1.12 AML other m 2020-12-09T04:17:06.93
IV.ARRO.EHN. ML:1.6 0.00010564999999999999 0.2 AML other m 2020-12-09T04:17:07.51
IV.GUMA.HHN. ML:2.0 0.0003855 0.38 AML other m 2020-12-09T04:17:07.32
IV.GUMA.HNE. ML:2.1 0.000484 0.52 AML other m 2020-12-09T04:17:07.25
IV.GUMA.HNN. ML:2.3 0.000768 0.7 AML other m 2020-12-09T04:17:07.19
IV.MURB.HHN. ML:2.2 0.00042600000000000005 0.2 AML other m 2020-12-09T04:17:07.63
IV.ARRO.EHE. ML:1.8 0.000177 0.24 AML other m 2020-12-09T04:17:07.68
IV.MURB.HHE. ML:2.2 0.00047050000000000005 0.2 AML other m 2020-12-09T04:17:07.76
IV.SSFR.HHE. ML:2.1 0.0003135 1.34 AML other m 2020-12-09T04:17:08.13
IV.SSFR.HNE. ML:2.2 0.0004295 0.6 AML other m 2020-12-09T04:17:08.03
IV.FOSV.EHE. ML:1.5 0.000128 0.68 AML other m 2020-12-09T04:17:08.47
IV.SSFR.HNN. ML:2.2 0.00036050000000000003 1.26 AML other m 2020-12-09T04:17:09.25
IV.SSFR.HHN. ML:2.0 0.00027749999999999997 1.26 AML other m 2020-12-09T04:17:09.25
IV.CESX.HHE. ML:1.8 0.0001815 0.4 AML other m 2020-12-09T04:17:13.15
IV.CESX.HHN. ML:1.9 0.000217 0.36 AML other m 2020-12-09T04:17:13.35
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
Waveforms Seismic signals in miniseed + resp format Download