Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 20-10-2020 and time 05:31:42 (UTC) in region 10 km SW Serravalle di Chienti (MC)

A magnitude ML 1.7 earthquake occured in region: 10 km SW Serravalle di Chienti (MC), on

  • 20-10-2020 05:31:42 (UTC)
  • 20-10-2020 07:31:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0020, 12.8690 at 8 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
Serravalle di Chienti MC 10 1070 1070
Monte Cavallo MC 11 145 1215
Valtopina PG 11 1398 2613
Sellano PG 13 1079 3692
Nocera Umbra PG 14 5839 9531
Foligno PG 14 57155 66686
Pieve Torina MC 16 1458 68144
Spello PG 16 8645 76789
Trevi PG 17 8469 85258
Muccia MC 17 915 86173
Sefro MC 17 422 86595
Fiordimonte MC 19 202 86797
Pievebovigliana MC 19 866 87663
Preci PG 20 724 88387
Visso MC 20 1107 89494

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km E of Foligno (57155 inhabitants)
41 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
78 Km W of Teramo (54892 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
94 Km S of Fano (60888 inhabitants)
95 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 1.7 2020-10-20
05:31:42		 43.0022 12.8687 8 2021-02-26
14:56:06		 Bollettino Sismico Italiano INGV 84867051
Reviewed
Rev100 		ML 1.7 2020-10-20
05:31:42		 43.0087 12.869 10 2020-10-20
05:37:19		 Sala Sismica INGV-Roma 83943231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-20 05:31:42 ± 0.03
Latitude 43.0022 ± 0.0018
Longitude 12.8687 ± 0.0025
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84867051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 167
Semi-minor axis of confidence ellipse (meter) 95
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 218
Circular confidence region, given by single value of horizontal uncertainty (meter) 170.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 31
Number of associated phases, regardless of their use for origin computation 78
Number of defining phases 78
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) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.68079
Number of stations at which the event was observed 41
Number of stations from which data was used for origin computation 41
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 65
Type of magnitude ML
Reference to an origin 84867051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-20 09:56:10

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 83943231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-20 05:37:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-10-20T05:32:05.30 0.6 undecidable manual S 341 71.373 50 0.39 41
IV.TERO.HHZ. 2020-10-20T05:32:05.70 0.6 undecidable manual S 125 73.1712 50 0.33 42
IV.ATPI.EHZ. 2020-10-20T05:32:03.00 0.6 undecidable manual S 323 62.3931 50 0.49 41
IV.RM33.EHZ. 2020-10-20T05:32:02.40 1.0 undecidable manual S 153 61.494 50 0.13 22
IV.SMA1.EHZ. 2020-10-20T05:32:01.10 0.6 undecidable manual S 137 55.9995 50 0.29 44
IV.ARVD.HHZ. 2020-10-20T05:32:00.50 0.6 undecidable manual S 6 55.3002 50 -0.12 45
IV.ATVO.HHZ. 2020-10-20T05:32:00.80 0.6 undecidable manual S 319 56.2992 50 -0.08 46
IV.MTRA.EHZ. 2020-10-20T05:31:59.70 0.6 undecidable manual S 122 50.8158 50 0.29 44
IV.SSFR.HHZ. 2020-10-20T05:31:59.00 0.3 undecidable manual S 352 48.7179 50 0.16 68
IV.SAP2.EHZ. 2020-10-20T05:31:58.00 0.6 undecidable manual S 76 44.2224 50 0.34 44
IV.MF5.EHZ. 2020-10-20T05:31:58.90 0.6 undecidable manual S 92 48.0186 50 0.25 45
IV.ATSC.EHE. 2020-10-20T05:31:58.70 0.6 undecidable manual S 343 49.1175 50 -0.24 45
IV.ATFO.HHZ. 2020-10-20T05:31:58.80 0.3 undecidable manual S 329 47.0196 50 0.4 65
IV.CESX.HHE. 2020-10-20T05:31:58.80 0.6 undecidable manual S 208 49.3173 50 -0.21 45
IV.ARRO.EHZ. 2020-10-20T05:31:58.80 0.3 undecidable manual S 190 47.619 50 0.23 67
IV.LNSS.HHZ. 2020-10-20T05:31:57.80 0.3 undecidable manual S 162 46.4202 50 -0.44 64
IV.BADI.EHZ. 2020-10-20T05:31:56.65 0.6 undecidable manual P 318 75.5688 50 0.48 40
IV.MURB.HHZ. 2020-10-20T05:31:56.80 0.3 undecidable manual S 316 40.1265 50 0.23 68
IV.EL6.EHZ. 2020-10-20T05:31:56.50 0.3 undecidable manual S 27 40.9257 50 -0.26 68
IV.MMO1.EHZ. 2020-10-20T05:31:56.10 0.6 undecidable manual S 107 38.9277 50 -0.13 46
IV.TERO.HHZ. 2020-10-20T05:31:55.69 0.3 undecidable manual P 125 73.1712 50 -0.11 66
IV.NARO.HHZ. 2020-10-20T05:31:55.43 0.3 undecidable manual P 341 71.373 50 -0.1 66
IV.MPAG.EHZ. 2020-10-20T05:31:55.47 0.6 undecidable manual P 353 70.0743 50 0.14 44
IV.GAVE.EHZ. 2020-10-20T05:31:54.70 0.6 undecidable manual S 177 34.4433 103 -0.29 45
IV.MGAB.HHZ. 2020-10-20T05:31:54.07 0.6 undecidable manual P 261 62.1933 50 -0.04 45
IV.FOSV.EHZ. 2020-10-20T05:31:54.50 0.3 undecidable manual S 345 33.6441 103 -0.21 69
IT.GNU.HGE. 2020-10-20T05:31:54.20 0.3 undecidable manual S 228 32.745 104 -0.21 69
IV.ATPI.EHZ. 2020-10-20T05:31:54.05 0.3 undecidable manual P 323 62.3931 50 -0.09 67
IV.MOMA.HHZ. 2020-10-20T05:31:54.70 0.3 undecidable manual S 228 32.745 104 0.28 68
IV.MDAR.HNN. 2020-10-20T05:31:54.00 0.3 undecidable manual S 46 30.6471 105 0.29 69
IV.PF6.EHN. 2020-10-20T05:31:53.40 0.3 undecidable manual S 60 30.3474 105 -0.22 69
IV.MC2.EHZ. 2020-10-20T05:31:53.00 0.6 undecidable manual S 111 27.8499 106 0.22 47
IV.ATVO.HHZ. 2020-10-20T05:31:53.30 0.6 undecidable manual P 319 56.2992 50 0.1 45
IV.RM33.EHZ. 2020-10-20T05:31:53.64 0.3 undecidable manual P 153 61.494 50 -0.37 64
IV.CSP1.EHZ. 2020-10-20T05:31:53.40 0.6 undecidable manual S 70 29.0487 105 0.24 46
IV.ARVD.HHZ. 2020-10-20T05:31:52.79 0.3 undecidable manual P 6 55.3002 50 -0.26 66
IV.MTRA.EHZ. 2020-10-20T05:31:52.14 0.3 undecidable manual P 122 50.8158 50 -0.21 67
IV.SMA1.EHZ. 2020-10-20T05:31:52.94 0.3 undecidable manual P 137 55.9995 50 -0.22 66
IV.SNTG.HHZ. 2020-10-20T05:31:52.60 0.6 undecidable manual S 12 28.6491 106 -0.44 44
IV.MF5.EHZ. 2020-10-20T05:31:52.37 0.3 undecidable manual P 92 48.0186 50 0.45 64
IV.NRCA.HNZ. 2020-10-20T05:31:52.50 0.3 undecidable manual S 133 27.3504 106 -0.1 72
IV.ATCC.EHZ. 2020-10-20T05:31:52.70 0.6 undecidable manual S 318 27.4503 106 0.05 48
IV.LNSS.HHZ. 2020-10-20T05:31:51.36 0.3 undecidable manual P 162 46.4202 50 -0.32 66
IV.CESX.HHE. 2020-10-20T05:31:51.65 0.6 undecidable manual P 208 49.3173 50 -0.47 42
IV.ATFO.HHZ. 2020-10-20T05:31:51.70 0.3 undecidable manual P 329 47.0196 50 -0.07 70
IV.ARRO.EHZ. 2020-10-20T05:31:51.89 0.3 undecidable manual P 190 47.619 50 0.02 70
IV.SSFR.HHZ. 2020-10-20T05:31:51.64 0.3 undecidable manual P 352 48.7179 50 -0.38 65
IV.ATSC.EHE. 2020-10-20T05:31:51.85 0.3 undecidable manual P 343 49.1175 50 -0.23 67
IV.SAP2.EHZ. 2020-10-20T05:31:51.84 0.3 undecidable manual P 76 44.2224 50 0.49 64
IV.EL6.EHZ. 2020-10-20T05:31:50.58 0.1 positive manual P 27 40.9257 50 -0.25 90
IV.MMO1.EHZ. 2020-10-20T05:31:50.32 0.3 undecidable manual P 107 38.9277 50 -0.2 69
IV.MURB.HHZ. 2020-10-20T05:31:50.54 0.1 undecidable manual P 316 40.1265 50 -0.17 92
IV.FDMO.HHZ. 2020-10-20T05:31:49.80 0.6 undecidable manual S 78 18.1707 114 0.2 48
IV.FOSV.EHZ. 2020-10-20T05:31:49.55 0.3 undecidable manual P 345 33.6441 103 -0.09 71
IT.GNU.HGE. 2020-10-20T05:31:49.86 0.6 undecidable manual P 228 32.745 104 0.39 45
IV.ASSB.HHZ. 2020-10-20T05:31:49.40 0.3 undecidable manual S 285 17.5713 115 -0.03 74
IV.MOMA.HHZ. 2020-10-20T05:31:49.44 0.3 undecidable manual P 228 32.745 104 -0.03 72
IV.MDAR.HNN. 2020-10-20T05:31:49.04 0.3 undecidable manual P 46 30.6471 105 -0.03 72
IV.SEF1.HNZ. 2020-10-20T05:31:49.20 0.6 undecidable manual S 22 17.2716 115 -0.13 48
IV.GAVE.EHZ. 2020-10-20T05:31:49.57 0.3 undecidable manual P 177 34.4433 103 -0.23 69
IV.SNTG.HHZ. 2020-10-20T05:31:48.44 0.3 undecidable manual P 12 28.6491 106 -0.24 69
IV.MC2.EHZ. 2020-10-20T05:31:48.77 0.3 undecidable manual P 111 27.8499 106 0.24 70
IV.MML1.HNZ. 2020-10-20T05:31:48.60 0.3 undecidable manual S 34 14.874 118 0 75
IV.ATCC.EHZ. 2020-10-20T05:31:48.42 0.1 negative manual P 318 27.4503 106 -0.03 97
IV.CSP1.EHZ. 2020-10-20T05:31:48.72 0.1 positive manual P 70 29.0487 105 -0.03 97
IV.NRCA.HNZ. 2020-10-20T05:31:48.33 0.1 negative manual P 133 27.3504 106 -0.09 96
IT.FOPC.HGZ. 2020-10-20T05:31:48.70 0.3 undecidable manual S 255 13.875 120 0.41 69
IV.PF6.EHN. 2020-10-20T05:31:48.87 0.1 undecidable manual P 60 30.3474 105 -0.14 94
IT.MTCL.HGZ. 2020-10-20T05:31:47.40 0.3 undecidable manual S 95 10.6782 127 0.06 74
IV.ASSB.HHZ. 2020-10-20T05:31:46.66 0.1 positive manual P 285 17.5713 115 0.07 98
IV.SEF1.HNZ. 2020-10-20T05:31:46.49 0.6 undecidable manual P 22 17.2716 115 -0.04 49
IT.FOPC.HGZ. 2020-10-20T05:31:46.28 0.3 undecidable manual P 255 13.875 120 0.35 70
IV.FEMA.HNZ. 2020-10-20T05:31:46.51 0.1 undecidable manual P 107 15.3735 118 0.32 93
IV.FDMO.HHZ. 2020-10-20T05:31:46.87 0.1 positive manual P 78 18.1707 114 0.18 95
IV.MML1.HNZ. 2020-10-20T05:31:46.30 0.1 positive manual P 34 14.874 118 0.19 96
IV.CESI.HHZ. 2020-10-20T05:31:45.30 0.3 undecidable manual S 84 2.8971 160 -0.38 70
IT.MTCL.HGZ. 2020-10-20T05:31:45.60 0.3 undecidable manual P 95 10.6782 127 0.21 72
IV.CESI.HHZ. 2020-10-20T05:31:44.35 0.1 positive manual P 84 2.8971 160 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.0 0.003143084 0.08 AML other m 2020-10-20T05:31:45.52
IV.CESI.HHN. ML:0.0 0.0025702515000000006 0.0608 AML other m 2020-10-20T05:31:45.40
IV.CESI.HNN. ML:0.0 0.002484585 0.0704 AML other m 2020-10-20T05:31:45.40
IV.CESI.HNE. ML:0.0 0.0029347469999999997 0.0896 AML other m 2020-10-20T05:31:45.52
IV.ASSB.HHE. ML:2.2 0.0014751725999999998 0.08 AML other m 2020-10-20T05:31:49.70
IV.ASSB.HHN. ML:2.3 0.001749054 0.16 AML other m 2020-10-20T05:31:49.73
IV.FDMO.HHE. ML:1.9 0.0007084671 0.16 AML other m 2020-10-20T05:31:49.98
IV.FDMO.HHN. ML:1.7 0.00040894965 0.1408 AML other m 2020-10-20T05:31:49.95
IV.ATCC.EHN. ML:1.7 0.0002934109 0.2784 AML other m 2020-10-20T05:31:56.04
IV.ATCC.EHE. ML:1.8 0.0003761755 0.0992 AML other m 2020-10-20T05:31:53.42
IV.SNTG.HNE. ML:1.4 0.00012603465999999999 0.1376 AML other m 2020-10-20T05:31:55.07
IV.SNTG.HHE. ML:1.3 0.0001132014 0.1408 AML other m 2020-10-20T05:31:55.01
IV.SNTG.HHN. ML:1.3 0.00011497334 0.0992 AML other m 2020-10-20T05:31:54.48
IV.SNTG.HNN. ML:1.7 0.00026762245 0.88 AML other m 2020-10-20T05:31:53.12
IV.CSP1.EHN. ML:2.0 0.0005302067 0.1984 AML other m 2020-10-20T05:31:55.44
IV.CSP1.EHE. ML:1.9 0.00039504715000000004 0.1376 AML other m 2020-10-20T05:31:55.54
IV.MOMA.HHN. ML:1.8 0.00026041970000000004 0.1408 AML other m 2020-10-20T05:31:55.37
IV.MOMA.HHE. ML:1.9 0.00036933760000000006 0.16 AML other m 2020-10-20T05:31:56.52
IV.MOMA.HNE. ML:1.9 0.00035478805 0.2208 AML other m 2020-10-20T05:31:55.51
IV.MOMA.HNN. ML:1.7 0.00022150124999999998 0.1184 AML other m 2020-10-20T05:31:55.30
IV.FOSV.EHE. ML:1.4 0.0001203934 0.3008 AML other m 2020-10-20T05:31:55.18
IV.FOSV.EHN. ML:1.6 0.00017045525 0.2208 AML other m 2020-10-20T05:31:55.32
IV.GAVE.EHE. ML:2.0 0.0004473007 0.2816 AML other m 2020-10-20T05:31:56.16
IV.GAVE.EHN. ML:1.8 0.0002533285 0.1984 AML other m 2020-10-20T05:31:55.71
IV.GAVE.HNE. ML:2.0 0.00043065585 0.1504 AML other m 2020-10-20T05:31:56.16
IV.EL6.EHE. ML:2.1 0.00039894195 0.2624 AML other m 2020-10-20T05:31:57.10
IV.EL6.EHN. ML:1.8 0.00019793074999999998 0.1824 AML other m 2020-10-20T05:31:57.21
IV.LNSS.HNN. ML:2.0 0.00030288900000000003 0.2208 AML other m 2020-10-20T05:31:58.50
IV.LNSS.HHE. ML:2.0 0.0003139457 0.1408 AML other m 2020-10-20T05:31:58.35
IV.LNSS.HHN. ML:2.0 0.00031032025 0.2176 AML other m 2020-10-20T05:31:58.61
IV.LNSS.HNE. ML:2.0 0.00029337539999999994 0.1696 AML other m 2020-10-20T05:31:58.35
IV.SSFR.HNE. ML:2.0 0.0002702848 0.1984 AML other m 2020-10-20T05:31:59.58
IV.SSFR.HHN. ML:1.8 0.00016027754999999998 0.1216 AML other m 2020-10-20T05:32:01.58
IV.SSFR.HNN. ML:1.9 0.00020095799999999997 0.1312 AML other m 2020-10-20T05:32:01.58
IV.SSFR.HHE. ML:1.9 0.0002326714 0.24 AML other m 2020-10-20T05:31:59.58
IV.ATFO.HHE. ML:1.4 0.000073486125 0.1408 AML other m 2020-10-20T05:31:59.77
IV.ATFO.HHN. ML:1.3 0.000054108525 0.1792 AML other m 2020-10-20T05:32:00.04
IV.SAP2.EHN. ML:2.6 0.0011926475 0.16 AML other m 2020-10-20T05:31:59.32
IV.SAP2.EHE. ML:1.8 0.00019574685 0.1408 AML other m 2020-10-20T05:31:59.25
IV.ARRO.EHE. ML:1.6 0.00011014029999999999 0.1792 AML other m 2020-10-20T05:31:59.63
IV.ARRO.EHN. ML:1.6 0.00010081821 0.1408 AML other m 2020-10-20T05:32:01.59
IV.MTRA.EHE. ML:1.8 0.00014909169999999998 0.3008 AML other m 2020-10-20T05:32:01.09
IV.MTRA.EHN. ML:2.0 0.00026211070000000004 0.2816 AML other m 2020-10-20T05:32:00.55
IV.MTRA.HNN. ML:2.0 0.0002663288 0.32 AML other m 2020-10-20T05:32:00.25
IV.MTRA.HNE. ML:1.9 0.0001840703 0.2976 AML other m 2020-10-20T05:32:00.80
IV.MF5.EHN. ML:1.8 0.00016953675 0.16 AML other m 2020-10-20T05:32:00.20
IV.MF5.EHE. ML:1.6 0.00012320211 0.2816 AML other m 2020-10-20T05:32:01.41
IV.ARVD.HHE. ML:1.3 0.000045443634999999995 0.1824 AML other m 2020-10-20T05:32:02.65
IV.ARVD.HHN. ML:1.1 0.00003109523 0.1632 AML other m 2020-10-20T05:32:03.25
IV.SMA1.EHN. ML:1.5 0.00007004827499999999 0.3424 AML other m 2020-10-20T05:32:03.97
IV.SMA1.EHE. ML:1.5 0.00006778683499999999 0.3776 AML other m 2020-10-20T05:32:03.97
IV.ATVO.HHE. ML:1.4 0.000058645955 0.2208 AML other m 2020-10-20T05:32:01.86
IV.ATVO.HHN. ML:1.4 0.000056363009999999996 0.3392 AML other m 2020-10-20T05:32:04.91
IV.RM33.EHE. ML:1.4 0.000046632880000000004 0.3008 AML other m 2020-10-20T05:32:06.91
IV.RM33.EHN. ML:1.4 0.000055308515 0.2176 AML other m 2020-10-20T05:32:03.64
IV.ATPI.EHN. ML:1.2 0.000034887085 0.3008 AML other m 2020-10-20T05:32:08.08
IV.ATPI.EHE. ML:1.2 0.0000368113 0.4384 AML other m 2020-10-20T05:32:09.04
IV.MGAB.HHE. ML:1.4 0.000051183905 0.3808 AML other m 2020-10-20T05:32:08.16
IV.MGAB.HNE. ML:1.8 0.00011885046499999999 0.6304 AML other m 2020-10-20T05:32:14.32
IV.MGAB.HHN. ML:1.4 0.000046279299999999996 0.16 AML other m 2020-10-20T05:32:05.32
IV.MGAB.HNN. ML:2.0 0.0001888599 1.04 AML other m 2020-10-20T05:32:11.44
IV.NARO.HHN. ML:1.1 0.000018237714999999998 0.0608 AML other m 2020-10-20T05:32:07.39
IV.NARO.HHE. ML:1.0 0.00001718766375 0.1024 AML other m 2020-10-20T05:32:06.34
IV.MPAG.EHE. ML:1.1 0.000018046699999999998 0.16 AML other m 2020-10-20T05:32:09.91
IV.MPAG.EHN. ML:1.0 0.0000144510295 0.2816 AML other m 2020-10-20T05:32:11.76
IV.TERO.HHE. ML:1.5 0.000050342725000000003 0.1184 AML other m 2020-10-20T05:32:06.63
IV.TERO.HHN. ML:1.5 0.000042760955 0.0992 AML other m 2020-10-20T05:32:06.43
IV.BADI.EHE. ML:1.3 0.000030231180000000005 0.2816 AML other m 2020-10-20T05:32:09.17
IV.BADI.EHN. ML:1.2 0.000025905185 0.5984 AML other m 2020-10-20T05:32:15.97
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