Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 19-12-2020 and time 17:31:44 (Italy) in region 3 km W Sigillo (PG)

A magnitude ML 1.4 earthquake occured in region: 3 km W Sigillo (PG), on

  • 19-12-2020 16:31:44 (UTC)
  • 19-12-2020 17:31:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3320, 12.7070 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
Sigillo PG 3 2404 2404
Costacciaro PG 3 1216 3620
Fossato di Vico PG 6 2840 6460
Scheggia e Pascelupo PG 9 1393 7853
Gubbio PG 11 32216 40069
Gualdo Tadino PG 13 15208 55277
Fabriano AN 16 31480 86757
Sassoferrato AN 17 7285 94042
Cantiano PU 17 2245 96287
Serra Sant'Abbondio PU 19 1027 97314

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Perugia (166134 inhabitants)
42 Km N of Foligno (57155 inhabitants)
62 Km SW of Fano (60888 inhabitants)
67 Km S of Pesaro (94582 inhabitants)
68 Km E of Arezzo (99543 inhabitants)
73 Km W of Ancona (100861 inhabitants)
82 Km S of Rimini (147750 inhabitants)
86 Km N of Terni (111501 inhabitants)
97 Km SE of Cesena (96758 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 1.4 2020-12-19
16:31:44		 43.332 12.7072 13 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86207911
Reviewed
Rev100 		ML 1.3 2020-12-19
16:31:44		 43.334 12.705 13 2020-12-19
16:37:01		 Sala Sismica INGV-Roma 85551161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-19 16:31:44 ± 0.03
Latitude 43.3320 ± 0.0018
Longitude 12.7072 ± 0.0025
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 86207911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 258
Semi-minor axis of confidence ellipse (meter) 66
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 41
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.70147
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 31
Type of magnitude ML
Reference to an origin 86207911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-12 17:40:44

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 85551161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-19 16:37:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRSN.EHZ. 2020-12-19T16:32:05.91 3.0 negative manual P 2.23 0
IV.FDMO.HHZ. 2020-12-19T16:31:59.00 0.3 undecidable manual S 137 44.9217 94 0.38 66
IV.CSP1.EHZ. 2020-12-19T16:31:59.66 0.3 undecidable manual S 123 48.2184 94 0.15 68
IV.MNTT.EHZ. 2020-12-19T16:31:58.00 0.6 undecidable manual P 112 77.8665 92 0.43 41
IV.PE3.EHZ. 2020-12-19T16:31:58.01 0.3 undecidable manual S 337 43.8228 94 -0.31 66
IV.CESI.HHZ. 2020-12-19T16:31:57.13 0.6 undecidable manual S 156 39.627 95 -0.09 47
IV.ASSB.HHZ. 2020-12-19T16:31:55.22 0.6 undecidable manual S 187 32.3454 97 -0.05 48
IV.NARO.HHZ. 2020-12-19T16:31:55.43 0.6 undecidable manual S 342 32.5452 97 0.1 48
IV.EL6.EHZ. 2020-12-19T16:31:55.38 0.6 undecidable manual S 90 31.8459 97 0.24 46
IV.MPAG.EHZ. 2020-12-19T16:31:55.89 0.6 undecidable manual S 7 33.2445 96 0.38 45
IV.ATPI.EHZ. 2020-12-19T16:31:54.20 0.6 undecidable manual S 298 27.8499 99 0.11 48
IV.MMUR.HNZ. 2020-12-19T16:31:53.50 0.6 undecidable manual S 62 26.3514 100 -0.2 47
IV.ARVD.HHZ. 2020-12-19T16:31:53.76 0.6 undecidable manual S 46 26.3514 100 0.06 49
IV.ATPC.HHZ. 2020-12-19T16:31:53.86 0.3 undecidable manual S 309 26.0517 100 0.25 70
IV.SNTG.HHZ. 2020-12-19T16:31:52.17 0.6 undecidable manual S 114 20.6682 105 -0.04 49
IV.PE3.EHZ. 2020-12-19T16:31:52.72 0.1 undecidable manual P 337 43.8228 94 0.39 88
IV.ATVO.HHZ. 2020-12-19T16:31:52.96 0.3 undecidable manual S 283 24.8529 101 -0.34 68
IV.ATLO.EHZ. 2020-12-19T16:31:52.86 0.3 undecidable manual S 266 24.2535 101 -0.28 69
IV.FDMO.HHZ. 2020-12-19T16:31:52.28 0.3 undecidable manual P 137 44.9217 94 -0.23 68
IV.ATBU.EHZ. 2020-12-19T16:31:52.47 0.6 undecidable manual S 321 20.4684 105 0.32 46
IV.CSP1.EHZ. 2020-12-19T16:31:52.94 0.1 undecidable manual P 123 48.2184 94 -0.08 93
IV.CESI.HHZ. 2020-12-19T16:31:51.71 0.1 undecidable manual P 156 39.627 95 0.02 95
IV.MURB.HHZ. 2020-12-19T16:31:51.41 0.3 undecidable manual S 243 16.5723 113 0.23 71
IV.ATCC.EHZ. 2020-12-19T16:31:51.47 0.6 undecidable manual S 198 17.1717 111 0.15 48
IV.ATFO.HHZ. 2020-12-19T16:31:50.04 0.6 undecidable manual S 289 11.5773 127 0.02 50
IV.MPAG.EHZ. 2020-12-19T16:31:50.63 0.1 undecidable manual P 7 33.2445 96 -0.08 95
IV.SSFR.HHZ. 2020-12-19T16:31:50.06 0.6 undecidable manual S 28 13.0758 122 -0.28 47
IV.ASSB.HHZ. 2020-12-19T16:31:50.36 0.1 undecidable manual P 187 32.3454 97 -0.21 93
IV.NARO.HHZ. 2020-12-19T16:31:50.44 0.1 undecidable manual P 342 32.5452 97 -0.16 93
IV.EL6.EHZ. 2020-12-19T16:31:50.48 0.3 negative manual P 90 31.8459 97 -0.01 72
IV.ATPI.EHZ. 2020-12-19T16:31:49.79 0.1 undecidable manual P 298 27.8499 99 -0.1 95
IV.ATSC.EHZ. 2020-12-19T16:31:49.63 0.3 undecidable manual S 351 10.3785 132 -0.13 73
IV.MMUR.HNZ. 2020-12-19T16:31:49.47 0.1 undecidable manual P 62 26.3514 100 -0.19 94
IV.ATVO.HHZ. 2020-12-19T16:31:49.38 0.3 negative manual P 283 24.8529 101 -0.05 73
IV.ATLO.EHZ. 2020-12-19T16:31:49.26 0.3 undecidable manual P 266 24.2535 101 -0.08 72
IV.ARVD.HHZ. 2020-12-19T16:31:49.67 0.1 undecidable manual P 46 26.3514 100 0.01 98
IV.ATPC.HHZ. 2020-12-19T16:31:49.57 0.3 undecidable manual P 309 26.0517 100 -0.04 73
IV.ATCC.EHZ. 2020-12-19T16:31:48.37 0.1 positive manual P 198 17.1717 111 0.08 98
IV.ATBU.EHZ. 2020-12-19T16:31:48.99 0.1 undecidable manual P 321 20.4684 105 0.22 95
IV.SNTG.HHZ. 2020-12-19T16:31:48.67 0.1 undecidable manual P 114 20.6682 105 -0.13 96
IV.FOSV.EHZ. 2020-12-19T16:31:48.83 0.6 undecidable manual S 133 5.994 150 -0.19 49
IV.MURB.HHZ. 2020-12-19T16:31:48.29 0.1 positive manual P 243 16.5723 113 0.08 98
IV.ATFO.HHZ. 2020-12-19T16:31:47.64 0.1 positive manual P 289 11.5773 127 0.1 99
IV.ATSC.EHZ. 2020-12-19T16:31:47.38 0.1 undecidable manual P 351 10.3785 132 -0.01 100
IV.SSFR.HHZ. 2020-12-19T16:31:47.72 0.1 positive manual P 28 13.0758 122 0 100
IV.FOSV.EHZ. 2020-12-19T16:31:46.90 1.0 undecidable manual P 133 5.994 150 -0.06 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:1.3 0.0002645 1.66 AML other m 2020-12-19T16:31:48.97
IV.FOSV.EHN. ML:1.4 0.000268 0.26 AML other m 2020-12-19T16:31:49.00
IV.ATFO.HHE. ML:1.4 0.0002585 0.1 AML other m 2020-12-19T16:31:50.22
IV.SSFR.HHE. ML:1.4 0.00026000000000000003 0.26 AML other m 2020-12-19T16:31:50.40
IV.SSFR.HHN. ML:1.6 0.00034550000000000005 0.86 AML other m 2020-12-19T16:31:50.31
IV.ATFO.HHN. ML:1.5 0.000296 1.24 AML other m 2020-12-19T16:31:50.26
IV.SSFR.HNN. ML:1.7 0.000532 0.18 AML other m 2020-12-19T16:31:50.83
IV.SSFR.HNE. ML:1.7 0.0004965 0.92 AML other m 2020-12-19T16:31:51.53
IV.ATCC.EHN. ML:1.3 0.000151 0.26 AML other m 2020-12-19T16:31:51.72
IV.MURB.HNN. ML:1.8 0.000575 0.3 AML other m 2020-12-19T16:31:51.85
IV.MURB.HHN. ML:2.0 0.000703 0.26 AML other m 2020-12-19T16:31:51.85
IV.MURB.HNE. ML:1.8 0.000504 0.5 AML other m 2020-12-19T16:31:51.98
IV.MURB.HHE. ML:1.8 0.0004915000000000001 0.52 AML other m 2020-12-19T16:31:51.98
IV.ATCC.EHE. ML:1.4 0.0001965 0.58 AML other m 2020-12-19T16:31:52.72
IV.SNTG.HHN. ML:1.0 0.00006570000000000001 1.42 AML other m 2020-12-19T16:31:52.08
IV.SNTG.HHE. ML:0.8 0.00004725 0.38 AML other m 2020-12-19T16:31:52.74
IV.ATVO.HHE. ML:1.1 0.0000718 0.5 AML other m 2020-12-19T16:31:53.48
IV.ATVO.HHN. ML:1.2 0.0000819 0.42 AML other m 2020-12-19T16:31:53.54
IV.ARVD.HHN. ML:1.3 0.00010389999999999999 0.14 AML other m 2020-12-19T16:31:53.89
IV.ARVD.HHE. ML:1.6 0.000187 0.12 AML other m 2020-12-19T16:31:53.89
IV.ASSB.HHE. ML:1.5 0.000127 0.36 AML other m 2020-12-19T16:31:55.42
IV.EL6.EHN. ML:1.6 0.000157 0.16 AML other m 2020-12-19T16:31:55.64
IV.EL6.EHE. ML:1.5 0.00013155 0.88 AML other m 2020-12-19T16:31:55.55
IV.NARO.HHN. ML:1.0 0.000037699999999999995 0.08 AML other m 2020-12-19T16:31:56.00
IV.NARO.HHE. ML:1.1 0.00005055 0.98 AML other m 2020-12-19T16:31:56.23
IV.ASSB.HHN. ML:1.2 0.00007085 0.94 AML other m 2020-12-19T16:31:56.93
IV.CESI.HHE. ML:1.0 0.00003475 0.44 AML other m 2020-12-19T16:31:58.39
IV.CESI.HHN. ML:0.9 0.0000263 0.58 AML other m 2020-12-19T16:31:59.40
IV.FDMO.HHN. ML:0.9 0.00002695 0.64 AML other m 2020-12-19T16:31:59.63
IV.FDMO.HHE. ML:0.8 0.000020150000000000002 1.24 AML other m 2020-12-19T16:31:59.27
IV.MOMA.HHE. ML:1.4 0.000048799999999999994 0.9 AML other m 2020-12-19T16:32:06.54
IV.MOMA.HHN. ML:1.2 0.0000354 0.26 AML other m 2020-12-19T16:32:07.01
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