Earthquake with magnitude of ML 1.6 on date 23-10-2020 and time 14:53:54 (UTC) in region 2 km NE Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 2 km NE Norcia (PG), on

  • 23-10-2020 14:53:54 (UTC)
  • 23-10-2020 16:53:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.12 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 2 4957 4957
Preci PG 10 724 5681
Castelsantangelo sul Nera MC 10 281 5962
Cascia PG 13 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 15 1178 11464
Ussita MC 16 444 11908
Cerreto di Spoleto PG 16 1075 12983
Accumoli RI 16 667 13650
Sellano PG 18 1079 14729
Poggiodomo PG 18 117 14846
Montegallo AP 18 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 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 1.6 2020-10-23
14:53:54
42.81 13.12 10 2021-02-26
14:56:01
Bollettino Sismico Italiano INGV 84154211
Reviewed
Rev100
ML 1.6 2020-10-23
14:53:54
42.81 13.11 10 2020-10-23
15:00:33
Sala Sismica INGV-Roma 84059671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-23 14:53:54 ± 0.04
Latitude 42.81 ± 0.00
Longitude 13.12 ± 0.00
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 84154211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 310
Semi-minor axis of confidence ellipse (meter) 27
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 256
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
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 48
Number of defining phases 48
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.46585
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 84154211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-26 12:30:35

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 84059671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-23 15:00:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2020-10-23T14:54:11.33 0.6 undecidable manual S 344 0.4658 50 0.15 46
IV.ASSB.HHZ. 2020-10-23T14:54:09.40 0.3 undecidable manual S 305 0.4092 50 -0.1 71
IV.TERO.HHZ. 2020-10-23T14:54:08.96 0.3 undecidable manual S 117 0.4029 50 -0.34 68
IV.SAP2.EHZ. 2020-10-23T14:54:08.40 0.6 undecidable manual S 35 0.3561 50 0.48 44
IV.MF5.EHZ. 2020-10-23T14:54:07.01 0.6 undecidable manual S 54 0.3103 50 0.46 45
IV.CAMP.HHZ. 2020-10-23T14:54:07.42 0.3 undecidable manual S 141 0.3462 50 -0.19 71
IV.RM33.EHZ. 2020-10-23T14:54:06.46 0.3 undecidable manual S 166 0.3058 50 0.02 74
IV.MML1.HNZ. 2020-10-23T14:54:06.71 0.6 undecidable manual S 341 0.3247 50 -0.26 47
IV.GUMA.HHZ. 2020-10-23T14:54:06.69 0.6 undecidable manual S 32 0.3022 50 0.38 46
IV.CSP1.EHZ. 2020-10-23T14:54:05.88 0.6 undecidable manual S 13 0.2923 50 -0.15 48
IV.CESI.HHZ. 2020-10-23T14:54:04.66 0.3 undecidable manual S 322 0.2518 50 -0.15 73
IV.SNTG.HHZ. 2020-10-23T14:54:04.00 0.1 undecidable manual P 344 0.4658 50 -0.18 92
IV.MNTT.EHZ. 2020-10-23T14:54:04.10 0.1 undecidable manual P 54 0.4344 50 0.47 87
IV.SMA1.EHZ. 2020-10-23T14:54:04.33 0.6 undecidable manual S 137 0.2383 110 -0.09 49
IV.MTRA.EHZ. 2020-10-23T14:54:03.19 0.6 undecidable manual S 104 0.2113 113 -0.26 48
IV.GAVE.EHZ. 2020-10-23T14:54:03.16 0.3 undecidable manual S 235 0.1988 114 0.16 73
IV.FDMO.HHZ. 2020-10-23T14:54:03.71 0.3 undecidable manual S 355 0.2302 111 -0.42 69
IV.CESX.HHZ. 2020-10-23T14:54:03.74 0.6 undecidable manual P 243 0.4362 50 0.07 47
IV.LNSS.HHZ. 2020-10-23T14:54:03.41 0.3 undecidable manual S 195 0.2113 113 -0.02 75
IV.MOMA.HHZ. 2020-10-23T14:54:03.16 0.1 undecidable manual P 270 0.4002 50 0.11 95
IT.GNU.HGZ. 2020-10-23T14:54:03.54 0.6 undecidable manual P 270 0.4002 50 0.49 44
IV.TERO.HHZ. 2020-10-23T14:54:02.69 0.1 undecidable manual P 117 0.4029 50 -0.4 89
IV.SAP2.EHZ. 2020-10-23T14:54:02.68 0.6 undecidable manual P 35 0.3561 50 0.38 45
IV.ASSB.HHZ. 2020-10-23T14:54:02.82 0.1 undecidable manual P 305 0.4092 50 -0.39 89
IV.MMO1.EHZ. 2020-10-23T14:54:02.04 0.3 undecidable manual S 59 0.1799 116 -0.31 71
IT.MTCL.HGZ. 2020-10-23T14:54:02.85 0.3 undecidable manual S 336 0.2059 113 -0.39 70
IV.MML1.HNZ. 2020-10-23T14:54:01.31 0.6 undecidable manual P 341 0.3247 50 -0.44 45
IV.ARRO.EHZ. 2020-10-23T14:54:01.97 0.6 undecidable manual P 229 0.3435 50 -0.11 48
IV.GUMA.HHZ. 2020-10-23T14:54:01.44 0.1 undecidable manual P 32 0.3022 50 0.07 97
IV.RM33.EHZ. 2020-10-23T14:54:01.61 0.1 undecidable manual P 166 0.3058 50 0.17 95
IV.PF6.EHZ. 2020-10-23T14:54:01.84 0.6 undecidable manual P 10 0.3363 50 -0.11 48
IV.MF5.EHZ. 2020-10-23T14:54:01.83 0.1 undecidable manual P 54 0.3103 50 0.32 92
IV.CAMP.HHZ. 2020-10-23T14:54:01.83 0.1 undecidable manual P 141 0.3462 50 -0.29 92
IV.FEMA.HNZ. 2020-10-23T14:54:01.51 0.3 undecidable manual S 343 0.1628 118 -0.24 73
IV.CSP1.EHZ. 2020-10-23T14:54:01.19 0.1 undecidable manual P 13 0.2923 50 -0.01 99
IV.SMA1.EHZ. 2020-10-23T14:54:00.26 0.1 undecidable manual P 137 0.2383 110 -0.02 100
IV.MC2.EHZ. 2020-10-23T14:54:00.52 0.3 undecidable manual S 27 0.1178 127 0.24 73
IV.CESI.HHZ. 2020-10-23T14:54:00.37 0.1 undecidable manual P 322 0.2518 50 -0.14 97
IV.FDMO.HHZ. 2020-10-23T14:54:00.65 0.1 undecidable manual P 355 0.2302 111 0.54 89
IT.MTCL.HGZ. 2020-10-23T14:53:59.51 0.1 undecidable manual P 336 0.2059 113 -0.09 99
IV.FEMA.HNZ. 2020-10-23T14:53:59.04 0.3 undecidable manual P 343 0.1628 118 0.3 72
IV.MTRA.EHZ. 2020-10-23T14:53:59.57 0.1 undecidable manual P 104 0.2113 113 -0.15 98
IV.GAVE.EHZ. 2020-10-23T14:53:59.59 0.1 undecidable manual P 235 0.1988 114 0.13 98
IV.LNSS.HHZ. 2020-10-23T14:53:59.97 0.1 undecidable manual P 195 0.2113 113 0.26 95
IV.MC2.EHZ. 2020-10-23T14:53:58.12 0.1 undecidable manual P 27 0.1178 127 0.23 98
IV.MMO1.EHZ. 2020-10-23T14:53:58.99 0.1 undecidable manual P 59 0.1799 116 -0.09 99
IV.NRCA.HNZ. 2020-10-23T14:53:57.98 0.3 undecidable manual S 357 0.027 163 -0.19 75
IV.NRCA.HNZ. 2020-10-23T14:53:56.87 0.1 undecidable manual P 357 0.027 163 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.6 0.00707 0.16 AML other m 2020-10-23T14:53:58.13
IV.NRCA.HNE. ML:2.6 0.006795 0.16 AML other m 2020-10-23T14:53:58.13
IV.NRCA.HHN. ML:2.4 0.0047 0.14 AML other m 2020-10-23T14:53:58.05
IV.NRCA.HNN. ML:2.3 0.003715 0.16 AML other m 2020-10-23T14:53:58.05
IV.GAVE.EHE. ML:1.8 0.0004805 0.86 AML other m 2020-10-23T14:54:03.59
IV.LNSS.HHN. ML:1.6 0.0002865 1.84 AML other m 2020-10-23T14:54:04.97
IV.FDMO.HHN. ML:1.5 0.000172 0.22 AML other m 2020-10-23T14:54:04.21
IV.LNSS.HHE. ML:1.6 0.000238 1.52 AML other m 2020-10-23T14:54:04.10
IV.MTRA.EHN. ML:1.5 0.0001775 0.16 AML other m 2020-10-23T14:54:04.22
IV.MTRA.EHE. ML:1.6 0.0002655 1.24 AML other m 2020-10-23T14:54:04.22
IV.GAVE.EHN. ML:1.7 0.000366 0.14 AML other m 2020-10-23T14:54:04.44
IV.CESI.HHE. ML:1.6 0.00019 0.34 AML other m 2020-10-23T14:54:05.08
IV.FDMO.HHE. ML:1.4 0.000141 0.22 AML other m 2020-10-23T14:54:05.60
IV.SMA1.EHE. ML:1.5 0.000159 0.42 AML other m 2020-10-23T14:54:05.75
IV.CESI.HHN. ML:1.9 0.000383 0.78 AML other m 2020-10-23T14:54:05.99
IV.CSP1.EHN. ML:1.8 0.0002505 0.46 AML other m 2020-10-23T14:54:06.40
IV.SMA1.EHN. ML:1.5 0.000186 1.32 AML other m 2020-10-23T14:54:06.20
IV.CSP1.EHE. ML:1.7 0.000222 1.22 AML other m 2020-10-23T14:54:06.37
IV.GUMA.HHE. ML:1.7 0.000194 0.38 AML other m 2020-10-23T14:54:07.42
IV.RM33.EHE. ML:1.3 7.89E-5 0.38 AML other m 2020-10-23T14:54:07.34
IV.CAMP.HHE. ML:1 4.215E-5 0.22 AML other m 2020-10-23T14:54:07.53
IV.CAMP.HHN. ML:1 4.225E-5 0.7 AML other m 2020-10-23T14:54:07.38
IV.GUMA.HHN. ML:1.8 0.0002975 0.7 AML other m 2020-10-23T14:54:07.88
IV.RM33.EHN. ML:1.2 6.965E-5 0.92 AML other m 2020-10-23T14:54:08.72
IV.TERO.HHE. ML:1.6 0.000133 0.12 AML other m 2020-10-23T14:54:09.76
IV.TERO.HHN. ML:1.5 0.00010635 0.76 AML other m 2020-10-23T14:54:09.84
IV.ASSB.HHN. ML:1.6 0.0001145 1.12 AML other m 2020-10-23T14:54:10.02
IV.ASSB.HHE. ML:1.4 7.68E-5 0.2 AML other m 2020-10-23T14:54:10.68
IV.MOMA.HHE. ML:1.6 0.0001184 0.26 AML other m 2020-10-23T14:54:11.28
IV.MOMA.HHN. ML:1.3 6.35E-5 0.5 AML other m 2020-10-23T14:54:11.57
IV.SNTG.HHE. ML:1.2 3.97E-5 0.12 AML other m 2020-10-23T14:54:12.63
IV.SNTG.HHN. ML:1.1 2.95E-5 1.18 AML other m 2020-10-23T14:54:12.38
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