Earthquake with magnitude of ML 1.8 on date 18-01-2021 and time 16:40:43 (Italy) in region 3 km E Norcia (PG)

A magnitude ML 1.8 earthquake occured in region: 3 km E Norcia (PG), on

  • 18-01-2021 15:40:43 (UTC)
  • 18-01-2021 16:40:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8020, 13.1300 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 11 281 5238
Preci PG 11 724 5962
Cascia PG 13 3217 9179
Arquata del Tronto AP 14 1178 10357
Visso MC 15 1107 11464
Accumoli RI 15 667 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 19 117 14290
Sellano PG 19 1079 15369
Montemonaco AP 20 604 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
97 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 1.8 2021-01-18
15:40:43
42.8015 13.1298 10 2021-07-12
16:55:00
Bollettino Sismico Italiano INGV 87629051
Reviewed
Rev100
ML 1.8 2021-01-18
15:40:43
42.8013 13.1387 10 2021-01-18
15:46:43
Sala Sismica INGV-Roma 86354581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-18 15:40:43 ± 0.05
Latitude 42.8015 ± 0.0027
Longitude 13.1298 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87629051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 321
Semi-minor axis of confidence ellipse (meter) 179
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.70956
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 86354581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-18 15:46:43

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 87629051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-02 15:21:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2021-01-18T15:41:08.15 0.3 undecidable manual S 349 78.7656 50 0.81 54
IV.EL6.EHZ. 2021-01-18T15:41:02.41 0.3 undecidable manual S 358 58.5969 50 0.45 64
IV.ATCC.EHZ. 2021-01-18T15:41:02.45 0.6 undecidable manual S 317 58.1973 50 0.59 41
IV.MOMA.HHZ. 2021-01-18T15:40:59.00 0.3 undecidable manual S 271 45.5211 50 0.52 64
IV.MNTT.EHZ. 2021-01-18T15:40:59.98 3.0 undecidable manual S 52 47.619 50 0.96 0
IV.CESX.HHE. 2021-01-18T15:40:59.51 0.3 undecidable manual S 244 49.2174 50 0.07 71
IV.ASSB.HHZ. 2021-01-18T15:40:58.79 0.3 undecidable manual S 305 46.7199 50 0.01 72
IV.TERO.HHZ. 2021-01-18T15:40:57.56 0.6 undecidable manual S 117 43.4232 50 -0.35 45
IV.SAP2.EHE. 2021-01-18T15:40:57.63 0.3 undecidable manual S 34 39.3273 50 0.8 58
IV.MDAR.HNN. 2021-01-18T15:40:57.58 0.3 undecidable manual S 1 43.4232 50 -0.32 68
IV.ARRO.EHZ. 2021-01-18T15:40:56.37 0.3 undecidable manual S 230 38.628 50 -0.25 69
IV.ARVD.HHZ. 2021-01-18T15:40:56.80 0.6 undecidable manual P 349 78.7656 50 -0.47 41
IV.MF5.EHZ. 2021-01-18T15:40:55.84 0.3 undecidable manual S 52 33.8439 50 0.49 66
IV.PF6.EHN. 2021-01-18T15:40:55.87 0.3 undecidable manual S 8 37.629 50 -0.5 66
IV.CAMP.HHZ. 2021-01-18T15:40:55.92 0.3 undecidable manual S 142 37.2294 50 -0.34 68
IV.RM33.EHZ. 2021-01-18T15:40:55.08 0.3 undecidable manual S 168 33.1446 50 -0.09 72
IV.GUMA.HHZ. 2021-01-18T15:40:55.51 0.3 undecidable manual S 30 33.4443 50 0.27 70
IV.EL6.EHZ. 2021-01-18T15:40:54.00 0.1 undecidable manual P 358 58.5969 50 -0.16 91
IV.ATCC.EHZ. 2021-01-18T15:40:54.14 0.1 undecidable manual P 317 58.1973 50 0.03 93
IV.CSP1.EHZ. 2021-01-18T15:40:54.71 0.3 undecidable manual S 11 32.745 50 -0.35 69
IV.CESI.HHZ. 2021-01-18T15:40:53.78 0.3 undecidable manual S 321 29.0487 50 -0.29 70
IV.MNTT.EHZ. 2021-01-18T15:40:53.27 0.3 undecidable manual P 52 47.619 50 0.8 57
IV.CESX.HHE. 2021-01-18T15:40:52.70 0.3 undecidable manual P 244 49.2174 50 -0.01 72
IT.MTCL.HGZ. 2021-01-18T15:40:52.01 0.3 undecidable manual S 334 23.8539 112 -0.41 69
IV.ASSB.HHZ. 2021-01-18T15:40:52.18 0.1 undecidable manual P 305 46.7199 50 -0.15 93
IV.LNSS.HHZ. 2021-01-18T15:40:52.61 0.3 undecidable manual S 198 23.2545 112 0.39 69
IV.MOMA.HHZ. 2021-01-18T15:40:52.49 0.1 undecidable manual P 271 45.5211 50 0.33 90
IV.SMA1.EHZ. 2021-01-18T15:40:52.86 0.3 undecidable manual S 138 25.2525 111 -0.04 74
IV.FDMO.HHZ. 2021-01-18T15:40:52.64 0.3 undecidable manual S 352 26.2515 110 -0.58 65
IV.T1299.HNN. 2021-01-18T15:40:52.14 0.3 undecidable manual S 146 22.3554 113 0.2 72
IV.TERO.HHZ. 2021-01-18T15:40:51.43 0.1 undecidable manual P 117 43.4232 50 -0.4 89
IV.SAP2.EHE. 2021-01-18T15:40:51.45 0.1 undecidable manual P 34 39.3273 50 0.25 92
IV.MTRA.EHZ. 2021-01-18T15:40:51.69 0.3 undecidable manual S 103 22.2555 113 -0.23 72
IV.MDAR.HNN. 2021-01-18T15:40:51.48 0.6 undecidable manual P 1 43.4232 50 -0.34 45
IV.ARRO.EHZ. 2021-01-18T15:40:51.00 0.1 undecidable manual P 230 38.628 50 -0.08 96
IV.RM33.EHZ. 2021-01-18T15:40:50.13 0.1 undecidable manual P 168 33.1446 50 -0.12 96
IV.GUMA.HHZ. 2021-01-18T15:40:50.35 0.1 undecidable manual P 30 33.4443 50 0.07 97
IV.FEMA.HNE. 2021-01-18T15:40:50.75 0.6 undecidable manual S 340 18.9699 117 -0.13 49
IV.MF5.EHZ. 2021-01-18T15:40:50.53 0.1 undecidable manual P 52 33.8439 50 0.18 95
IV.PF6.EHN. 2021-01-18T15:40:50.65 0.1 undecidable manual P 8 37.629 50 -0.29 92
IV.CAMP.HHZ. 2021-01-18T15:40:50.58 0.1 undecidable manual P 142 37.2294 50 -0.29 92
IV.MMO1.EHZ. 2021-01-18T15:40:50.93 0.3 undecidable manual S 56 19.3695 116 -0.07 74
IV.CESI.HHZ. 2021-01-18T15:40:49.45 0.1 undecidable manual P 321 29.0487 50 -0.16 96
IV.MC2.EHZ. 2021-01-18T15:40:49.51 0.3 undecidable manual S 21 13.0758 126 0.37 71
IV.CSP1.EHZ. 2021-01-18T15:40:49.94 0.1 undecidable manual P 11 32.745 50 -0.24 94
IV.SMA1.EHZ. 2021-01-18T15:40:48.84 0.1 undecidable manual P 138 25.2525 111 -0.09 98
IV.FDMO.HHZ. 2021-01-18T15:40:48.92 0.1 undecidable manual P 352 26.2515 110 -0.2 96
IV.T1299.HNN. 2021-01-18T15:40:48.73 0.1 undecidable manual P 146 22.3554 113 0.35 93
IV.MTRA.EHZ. 2021-01-18T15:40:48.28 0.1 undecidable manual P 103 22.2555 113 -0.09 98
IT.MTCL.HGZ. 2021-01-18T15:40:48.56 0.1 undecidable manual P 334 23.8539 112 -0.1 98
IV.LNSS.HHZ. 2021-01-18T15:40:48.62 0.1 undecidable manual P 198 23.2545 112 0.08 99
IV.NRCA.HNZ. 2021-01-18T15:40:47.00 0.3 undecidable manual S 340 3.7962 158 -0.07 76
IV.MMO1.EHZ. 2021-01-18T15:40:47.80 0.1 undecidable manual P 56 19.3695 116 -0.04 100
IV.MC2.EHZ. 2021-01-18T15:40:47.06 0.1 positive manual P 21 13.0758 126 0.3 96
IV.FEMA.HNE. 2021-01-18T15:40:47.91 0.3 undecidable manual P 340 18.9699 117 0.14 73
IV.NRCA.HNZ. 2021-01-18T15:40:45.83 0.1 undecidable manual P 340 3.7962 158 0.26 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.3 0.0034349999999999997 0.14 AML other m 2021-01-18T15:40:47.17
IV.NRCA.HNN. ML:2.2 0.0031 0.16 AML other m 2021-01-18T15:40:47.18
IV.NRCA.HHE. ML:2.2 0.002485 0.12 AML other m 2021-01-18T15:40:47.78
IV.NRCA.HNE. ML:2.1 0.002485 0.12 AML other m 2021-01-18T15:40:47.78
IV.MTRA.EHE. ML:1.4 0.00019076285 0.1664 AML other m 2021-01-18T15:40:52.79
IV.LNSS.HHE. ML:2.2 0.0009415 0.4 AML other m 2021-01-18T15:40:52.90
IV.MTRA.EHN. ML:1.6 0.0002475 0.7 AML other m 2021-01-18T15:40:52.57
IV.LNSS.HHN. ML:2.0 0.0007235000000000001 0.16 AML other m 2021-01-18T15:40:52.95
IV.FDMO.HHN. ML:1.7 0.0002945 0.28 AML other m 2021-01-18T15:40:53.21
IV.FDMO.HHE. ML:1.6 0.0002135 0.26 AML other m 2021-01-18T15:40:53.36
IV.SMA1.EHN. ML:1.5 0.00016899125 0.2048 AML other m 2021-01-18T15:40:54.62
IV.CESI.HHN. ML:1.9 0.0003955 0.34 AML other m 2021-01-18T15:40:54.19
IV.CESI.HHE. ML:1.8 0.00029000000000000006 0.2 AML other m 2021-01-18T15:40:54.22
IV.CSP1.EHE. ML:2.0 0.00040849999999999995 0.5 AML other m 2021-01-18T15:40:55.15
IV.CSP1.EHN. ML:2.0 0.0004205 0.84 AML other m 2021-01-18T15:40:55.51
IV.RM33.EHN. ML:1.5 0.00014150000000000002 0.26 AML other m 2021-01-18T15:40:55.76
IV.RM33.EHE. ML:1.5 0.00015099999999999998 0.12 AML other m 2021-01-18T15:40:55.75
IV.GUMA.HHN. ML:1.7 0.0001955 1.2 AML other m 2021-01-18T15:40:56.34
IV.SMA1.EHE. ML:1.6 0.00025885365 0.384 AML other m 2021-01-18T15:40:56.49
IV.GUMA.HHE. ML:1.8 0.00028149999999999996 0.28 AML other m 2021-01-18T15:40:57.61
IV.MOMA.HHE. ML:1.8 0.0001655 0.2 AML other m 2021-01-18T15:40:59.98
IV.MOMA.HHN. ML:1.5 0.0000829 0.94 AML other m 2021-01-18T15:40:59.54
IV.EL6.EHE. ML:1.9 0.00016499999999999997 1 AML other m 2021-01-18T15:41:03.25
IV.EL6.EHN. ML:1.9 0.000169 0.72 AML other m 2021-01-18T15:41:03.51
IV.MTRA.HNE. ML:1.4 0.00017695339999999999 0.1792 AML other m 2021-01-18T15:40:52.79
IV.MTRA.HNN. ML:1.6 0.00024613405 0.2176 AML other m 2021-01-18T15:40:52.57
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