Earthquake with magnitude of ML 1.0 on date 01-12-2020 and time 07:20:45 (Italy) in region 3 km E Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km E Norcia (PG), on

  • 01-12-2020 06:20:45 (UTC)
  • 01-12-2020 07:20:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.787, 13.131 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.

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 12 281 5238
Cascia PG 12 3217 8455
Preci PG 13 724 9179
Arquata del Tronto AP 14 1178 10357
Accumoli RI 14 667 11024
Visso MC 17 1107 12131
Ussita MC 18 444 12575
Montegallo AP 18 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 18 117 14290
Cittareale RI 19 482 14772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km N of Tivoli (56533 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
98 Km NW of Chieti (51815 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.0 2020-12-01
06:20:45
42.787 13.1312 10 2020-12-01
06:33:21
Sala Sismica INGV-Roma 85121501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-01 06:20:45 ± 0.07
Latitude 42.7870 ± 0.0036
Longitude 13.1312 ± 0.0049
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 85121501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 457
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
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 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.54229
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 85121501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-01 06:33:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-12-01T06:21:04.78 0.1 undecidable manual S 358 0.5423 50 0.28 88
IV.MF5.EHZ. 2020-12-01T06:20:58.24 0.1 undecidable manual S 50 0.313 50 0.53 87
IV.CSP1.EHZ. 2020-12-01T06:20:57.58 0.1 undecidable manual S 10 0.3094 50 -0.01 98
IV.CESI.HHZ. 2020-12-01T06:20:56.23 0.1 undecidable manual S 323 0.2734 50 -0.31 93
IV.EL6.EHZ. 2020-12-01T06:20:56.46 1.0 positive manual P 358 0.5423 50 -0.08 23
IV.FDMO.HHZ. 2020-12-01T06:20:55.47 0.1 undecidable manual S 353 0.2518 50 -0.4 91
IV.LNSS.HHZ. 2020-12-01T06:20:54.22 0.3 undecidable manual S 200 0.1961 114 0.29 71
IV.SMA1.EHZ. 2020-12-01T06:20:54.51 0.1 undecidable manual S 136 0.2167 112 -0.16 97
IV.MTRA.EHZ. 2020-12-01T06:20:53.68 0.1 undecidable manual S 99 0.197 114 -0.29 94
IV.TERO.HHZ. 2020-12-01T06:20:53.84 1.0 undecidable manual P 115 0.384 50 0.01 24
IV.FEMA.HNN. 2020-12-01T06:20:53.61 0.3 undecidable manual S 341 0.1853 115 0.06 74
IV.MMO1.EHZ. 2020-12-01T06:20:53.37 0.3 undecidable manual S 52 0.1826 116 -0.09 74
IV.MF5.EHZ. 2020-12-01T06:20:52.89 0.1 undecidable manual P 50 0.313 50 0.27 93
IV.MC2.EHZ. 2020-12-01T06:20:52.07 0.1 undecidable manual S 19 0.1313 124 0.32 95
IV.CSP1.EHZ. 2020-12-01T06:20:52.41 0.3 positive manual P 10 0.3094 50 -0.14 71
IV.FDMO.HHZ. 2020-12-01T06:20:51.32 0.1 positive manual P 353 0.2518 50 -0.24 94
IV.CESI.HHZ. 2020-12-01T06:20:51.89 0.1 negative manual P 323 0.2734 50 -0.05 98
IV.FEMA.HNN. 2020-12-01T06:20:50.59 0.1 undecidable manual P 341 0.1853 115 0.37 93
IV.MMO1.EHZ. 2020-12-01T06:20:50.04 0.1 undecidable manual P 52 0.1826 116 -0.12 98
IT.MTCL.HGN. 2020-12-01T06:20:50.88 0.1 undecidable manual P 335 0.2284 111 -0.22 95
IV.MTRA.EHZ. 2020-12-01T06:20:50.28 0.1 undecidable manual P 99 0.197 114 -0.19 96
IV.LNSS.HHZ. 2020-12-01T06:20:50.63 0.1 undecidable manual P 200 0.1961 114 0.19 96
IV.SMA1.EHZ. 2020-12-01T06:20:50.82 1.0 negative manual P 136 0.2167 112 -0.05 25
IV.NRCA.HNZ. 2020-12-01T06:20:49.26 0.1 undecidable manual S 345 0.0486 151 -0.26 98
IV.MC2.EHZ. 2020-12-01T06:20:49.39 0.3 positive manual P 19 0.1313 124 0.21 73
IV.NRCA.HNZ. 2020-12-01T06:20:48.04 0.1 negative manual P 345 0.0486 151 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2 0.0017823025 0.0608 AML other m 2020-12-01T06:20:49.33
IV.NRCA.HHN. ML:2 0.001788602 0.08 AML other m 2020-12-01T06:20:49.29
IV.NRCA.HNE. ML:2 0.001760322 0.0704 AML other m 2020-12-01T06:20:49.33
IV.NRCA.HNN. ML:2 0.0014975555 0.0704 AML other m 2020-12-01T06:20:49.29
IV.MTRA.EHE. ML:0.8 4.6641735E-5 0.1376 AML other m 2020-12-01T06:20:54.05
IV.MTRA.EHN. ML:0.8 4.0788946E-5 0.08 AML other m 2020-12-01T06:20:54.05
IV.LNSS.HHE. ML:1.2 0.00011061691 0.1184 AML other m 2020-12-01T06:20:54.71
IV.LNSS.HHN. ML:1.1 8.836497E-5 0.0992 AML other m 2020-12-01T06:20:54.58
IV.FDMO.HHE. ML:0.8 2.9470015E-5 0.16 AML other m 2020-12-01T06:20:56.93
IV.FDMO.HHN. ML:0.8 2.861284E-5 0.2016 AML other m 2020-12-01T06:20:57.62
IV.CESI.HHE. ML:0.7 2.4147485E-5 0.4224 AML other m 2020-12-01T06:21:01.70
IV.CESI.HHN. ML:0.9 3.782396E-5 0.3808 AML other m 2020-12-01T06:20:57.98
IV.CSP1.EHN. ML:1.1 5.014431E-5 0.1184 AML other m 2020-12-01T06:20:58.46
IV.EL6.EHE. ML:1.1 2.4055035E-5 0.1408 AML other m 2020-12-01T06:21:06.48
IV.EL6.EHN. ML:1 1.8955015E-5 0.2016 AML other m 2020-12-01T06:21:05.60
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