Earthquake with magnitude of ML 1.2 on date 04-12-2020 and time 08:13:05 (Italy) in region 3 km NE Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 3 km NE Norcia (PG), on

  • 04-12-2020 07:13:05 (UTC)
  • 04-12-2020 08:13:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8100, 13.1270 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Norcia PG 3 4957 4957
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 11 724 5962
Cascia PG 14 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 15 1178 11464
Ussita MC 15 444 11908
Accumoli RI 16 667 12575
Cerreto di Spoleto PG 17 1075 13650
Montegallo AP 17 523 14173
Sellano PG 19 1079 15252
Poggiodomo PG 19 117 15369
Montemonaco AP 19 604 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 Km NW of Chieti (51815 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 1.2 2020-12-04
07:13:05
42.8103 13.1267 11 2021-02-26
14:56:16
Bollettino Sismico Italiano INGV 86507201
Reviewed
Rev100
ML 1.3 2020-12-04
07:13:05
42.8108 13.1373 11 2020-12-04
07:20:43
Sala Sismica INGV-Roma 85193951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-04 07:13:05 ± 0.06
Latitude 42.8103 ± 0.0027
Longitude 13.1267 ± 0.0061
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86507201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 485
Semi-minor axis of confidence ellipse (meter) 238
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 70
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 0.39750
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 86507201
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-23 20:38:58

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 85193951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-04 07:20:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAMP.HHE. 2020-12-04T07:13:18.26 0.6 undecidable manual S 143 38.1285 50 -0.22 46
IV.MF5.EHZ. 2020-12-04T07:13:17.84 0.6 undecidable manual S 54 33.4443 50 0.62 42
IV.CSP1.EHZ. 2020-12-04T07:13:16.69 0.6 undecidable manual S 11 31.8459 50 -0.11 48
IV.CESI.HHZ. 2020-12-04T07:13:15.92 0.6 undecidable manual S 320 28.1496 50 0.12 48
IT.MTCL.HGZ. 2020-12-04T07:13:14.20 0.6 undecidable manual S 333 22.8549 50 -0.19 48
IV.LNSS.HHZ. 2020-12-04T07:13:14.76 0.6 undecidable manual S 197 24.0537 50 0.04 49
IV.FDMO.HHZ. 2020-12-04T07:13:14.81 0.6 undecidable manual S 353 25.2525 50 -0.23 47
IV.T1299.HNN. 2020-12-04T07:13:14.58 0.6 undecidable manual S 147 23.2545 50 0.07 49
IV.SMA1.EHZ. 2020-12-04T07:13:14.63 0.6 undecidable manual S 139 26.2515 50 -0.66 42
IV.TERO.HHZ. 2020-12-04T07:13:13.97 0.3 undecidable manual P 118 44.1225 50 -0.03 71
IV.CAMP.HHE. 2020-12-04T07:13:13.30 0.3 undecidable manual P 143 38.1285 50 0.22 69
IV.CSP1.EHZ. 2020-12-04T07:13:12.05 0.1 positive manual P 11 31.8459 50 -0.06 96
IV.MMO1.EHZ. 2020-12-04T07:13:12.96 0.6 undecidable manual S 59 19.0698 119 -0.29 47
IV.MF5.EHZ. 2020-12-04T07:13:12.59 0.3 undecidable manual P 54 33.4443 50 0.23 70
IV.SMA1.EHZ. 2020-12-04T07:13:11.37 0.3 undecidable manual P 139 26.2515 50 0.13 72
IV.CESI.HHZ. 2020-12-04T07:13:11.60 0.3 undecidable manual P 320 28.1496 50 0.06 73
IV.MC2.EHE. 2020-12-04T07:13:11.52 0.6 undecidable manual S 24 12.2766 130 0.2 48
IV.FDMO.HHZ. 2020-12-04T07:13:11.00 0.1 undecidable manual P 353 25.2525 50 -0.1 97
IV.T1299.HNN. 2020-12-04T07:13:10.90 0.1 undecidable manual P 147 23.2545 50 0.11 97
IT.MTCL.HGZ. 2020-12-04T07:13:10.66 0.3 undecidable manual P 333 22.8549 50 -0.06 74
IV.LNSS.HHZ. 2020-12-04T07:13:10.90 0.3 undecidable manual P 197 24.0537 50 -0.01 74
IV.MMO1.EHZ. 2020-12-04T07:13:09.84 0.1 positive manual P 59 19.0698 119 -0.22 95
IV.NRCA.HNZ. 2020-12-04T07:13:09.26 0.6 undecidable manual S 339 2.7972 165 -0.21 49
IV.MC2.EHE. 2020-12-04T07:13:09.13 0.3 undecidable manual P 24 12.2766 130 0.19 73
IV.NRCA.HNZ. 2020-12-04T07:13:08.01 0.1 negative manual P 339 2.7972 165 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.7 0.0009955124 0.1216 AML other m 2020-12-04T07:13:09.37
IV.NRCA.HHN. ML:1.8 0.00107006355 0.1216 AML other m 2020-12-04T07:13:09.37
IV.NRCA.HNE. ML:1.4 0.00047916915000000004 0.0896 AML other m 2020-12-04T07:13:09.51
IV.NRCA.HHE. ML:1.5 0.0005244116999999999 0.0608 AML other m 2020-12-04T07:13:09.77
IV.MF5.EHN. ML:1.2 0.00006684556999999999 0.5408 AML other m 2020-12-04T07:13:11.98
IV.LNSS.HHN. ML:1.4 0.0001458773 0.16 AML other m 2020-12-04T07:13:15.21
IV.LNSS.HHE. ML:1.4 0.00016380345 0.0992 AML other m 2020-12-04T07:13:15.42
IV.LNSS.HNE. ML:1.4 0.00016639039999999998 0.1216 AML other m 2020-12-04T07:13:15.36
IV.FDMO.HHN. ML:0.8 0.000037874775 0.16 AML other m 2020-12-04T07:13:15.61
IV.FDMO.HHE. ML:0.7 0.000031335290000000004 0.2592 AML other m 2020-12-04T07:13:15.73
IV.CESI.HHE. ML:0.7 0.000024826129999999998 0.08 AML other m 2020-12-04T07:13:16.46
IV.CSP1.EHN. ML:1.2 0.000064566605 0.0992 AML other m 2020-12-04T07:13:17.26
IV.CESI.HHN. ML:0.8 0.000029960094999999998 0.1792 AML other m 2020-12-04T07:13:19.34
IV.SMA1.EHE. ML:0.9 0.000040642175 0.6784 AML other m 2020-12-04T07:13:20.48
IV.TERO.HHE. ML:0.5 0.0000124785725 0.0608 AML other m 2020-12-04T07:13:21.32
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